Relevant bibliographies by topics / Objective and subjective quality assessment

Academic literature on the topic 'Objective and subjective quality assessment'

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Published: 8 June 2024

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Journal articles on the topic "Objective and subjective quality assessment":

Hands, D. S., M. D. Brotherton, A. Bourret, and D. Bayart. "Subjective quality assessment for objective quality model development." Electronics Letters 41, no. 7 (2005): 408. http://dx.doi.org/10.1049/el:20058339.

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Orwig, Russell L., and Michael D. Fimmen. "Quality of Life Comparison: Objective Assessment versus Subjective Assessment." Journal of Baccalaureate Social Work 11, no. 1 (September 1, 2005): 30–39. http://dx.doi.org/10.18084/1084-7219.11.1.30.

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Quality of life assessment has been proposed as a possible research tool for evaluating the life experiences of individuals in different cultures. The bulk of the literature on quality of life recognizes the existence of two separate but related measures of quality of life: objective measures (tangible and observable measures) and subjective measures (cognitive assessment or satisfaction with existing tangibles). The question is whether the subjective and objective measure of general quality of life of one culture can be used to assess or predict the quality of life in another. The current investigation suggests quality of life is best assessed within the context of the culture in which the individual resides and makes recommendations for social work education to reinforce cultural sensitivity through study abroad in order to prepare future social workers to meet the social service demands in a globalized world.

Dumic, Emil, and Luis A. da Silva Cruz. "Point Cloud Coding Solutions, Subjective Assessment and Objective Measures: A Case Study." Symmetry 12, no. 12 (November 26, 2020): 1955. http://dx.doi.org/10.3390/sym12121955.

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This paper presents a summary of recent progress in compression, subjective assessment and objective quality measures of point cloud representations of three dimensional visual information. Different existing point cloud datasets, as well as discusses the protocols that have been proposed to evaluate the subjective quality of point cloud data. Several geometry and attribute point cloud data objective quality measures are also presented and described. A case study on the evaluation of subjective quality of point clouds in two laboratories is presented. Six original point clouds degraded with G-PCC and V-PCC point cloud compression and five degradation levels were subjectively evaluated, showing high inter-laboratory correlation. Furthermore, performance of several geometry-based objective quality measures applied to the same data are described, concluding that the highest correlation with subjective scores is obtained using point-to-plane measures. Finally, several current challenges and future research directions on point clouds compression and quality evaluation are discussed.

Park, Hyung-Ju, and Dong-Hwan Har. "Correlation Research between Objective and Subjective Image Quality Assessment." Journal of the Korea Contents Association 11, no. 8 (August 28, 2011): 68–76. http://dx.doi.org/10.5392/jkca.2011.11.8.068.

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Shrestha, Prarthana, Rik Kneepkens, Gijs van Elswijk, Jeroen Vrijnsen, Roxana Ion, Dirk Verhagen, Esther Abels, Dirk Vossen, and and Bas Hulsken. "Objective and Subjective Assessment of Digital Pathology Image Quality." AIMS Medical Science 2, no. 1 (2015): 65–78. http://dx.doi.org/10.3934/medsci.2015.1.65.

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Zerman, Emin, Pan Gao, Cagri Ozcinar, and Aljosa Smolic. "Subjective and Objective Quality Assessment for Volumetric Video Compression." Electronic Imaging 2019, no. 10 (January 13, 2019): 323–1. http://dx.doi.org/10.2352/issn.2470-1173.2019.10.iqsp-323.

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Mytiai, Yurii Oleksandrovych, Kseniia Serhiivna Zamsha, Bohdan Valentynovych Lozinskyi, Olena Stepanivna Stepanovska, and Arkadii Mykolaiovych Prodeus. "Objective and subjective assessment of bandlimited signaling speech quality." Electronics and Communications 21, no. 1 (November 16, 2016): 18–26. http://dx.doi.org/10.20535/2312-1807.2016.21.1.82250.

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Cheng, Shan, Huanqiang Zeng, Jing Chen, Junhui Hou, Jianqing Zhu, and Kai-Kuang Ma. "Screen Content Video Quality Assessment: Subjective and Objective Study." IEEE Transactions on Image Processing 29 (2020): 8636–51. http://dx.doi.org/10.1109/tip.2020.3018256.

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Duanning Zhou, Jian Ma, and E. Turban. "Journal quality assessment: an integrated subjective and objective approach." IEEE Transactions on Engineering Management 48, no. 4 (2001): 479–90. http://dx.doi.org/10.1109/17.969425.

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Beerends, John G., Niels M. P. Neumann, Egon L. van den Broek, Anna Llagostera Casanovas, Jovana Torres Menendez, Christian Schmidmer, and Jens Berger. "Subjective and Objective Assessment of Full Bandwidth Speech Quality." IEEE/ACM Transactions on Audio, Speech, and Language Processing 28 (2020): 440–49. http://dx.doi.org/10.1109/taslp.2019.2957871.

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Dissertations / Theses on the topic "Objective and subjective quality assessment":

Sendjasni, Abderrezzaq. "Objective and subjective quality assessment of 360-degree images." Electronic Thesis or Diss., Poitiers, 2023. http://www.theses.fr/2023POIT2251.

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Les images à 360 degrés, aussi appelées images omnidirectionnelles, sont au cœur des contenus immersifs. Avec l’augmentation de leur utilisation notamment grâce à l’expérience interactive et immersive qu’ils offrent, il est primordial de garantir une bonne qualité d’expérience (QoE). Cette dernière est considérablement impactée par la qualité du contenu lui-même. En l’occurrence, les images à 360 degrés, comme tout type de signal visuel, passent par une séquence de processus comprenant l’encodage, la transmission, le décodage et le rendu. Chacun de ces processus est susceptible d’introduire des distorsions dans le contenu. Pour améliorer la qualité d’expérience, toutes ces dégradations potentielles doivent être soigneusement prises en compte et réduites à un niveau imperceptible. Pour atteindre cet objectif, l’évaluation de la qualité de l’image est l’une des stratégies devant être utilisée. Cette thèse aborde l’évaluation de la qualité des images à 360 degrés des points de vue objectif et subjectif. Ainsi, en s’intéressant à l’effet des visiocasques sur la qualité perçue des images 360 degrés, une étude psycho-visuelle est conçue et réalisée en utilisant quatre dispositifs différents. À cette fin, une base de données a été créé et un panel d’observateurs a été impliqué. L’impact des visiocasques sur la qualité a été identifié et mis en évidence comme un facteur important à prendre en compte lors de la réalisation d’expériences subjectives pour des images à 360 degrés. D’un point de vue objectif, nous avons d’abord procédé à une étude comparative extensive de plusieurs modèles de réseaux de neurones convolutifs (CNN) sous diverses configurations. Ensuite, nous avons amélioré la chaîne de traitement de l’évaluation de la qualité basée sur les CNN à différentes échelles, de l’échantillonnage et de la représentation des entrées à l’agrégation des scores de qualité. En se basant sur les résultats de ces études, et de l’analyse comparative, deux modèles de qualité basés sur les CNN sont proposés pour prédire avec précision la qualité des images à 360 degrés. Les observations et les conclusions obtenues à partir des différentes contributions de cette thèse apporteront un éclairage sur l’évaluation de la qualité des images à 360 degrés
360-degree images, a.k.a. omnidirectional images, are in the center of immersive media. With the increase in demands of the latter, mainly thanks to the offered interactive and immersive experience, it is paramount to provide good quality of experience (QoE). This QoE is significantly impacted by the quality of the content. Like any type of visual signal, 360-degree images go through a sequence of processes including encoding, transmission, decoding, and rendering. Each of these processes has the potential to introduce distortions to the content. To improve the QoE, image quality assessment (IQA) is one of the strategies to be followed. This thesis addresses the quality evaluation of 360-degree images from the objective and subjective perspectives. By focusing on the influence of Head Mounted Displays (HMDs) on the perceived quality of 360-degree images, a psycho-visual study is designed and carried out using four different devices. For this purpose, a 360-degree image datasets is created and a panel of observers is involved. The impact of HMDs on the quality ratings is identified and highlighted as an important factor to consider when con- ducting subjective experiments for 360-degree images. From the objective perspective, we first comprehensively benchmarked several convolutional neural network (CNN) models under various configurations. Then, the processing chain of CNN-based 360-IQA is improved at different scales, from input sampling and representation to aggregating quality scores. Based on the observations of the above studies as well as the benchmark, two 360-IQA models based on CNNs are proposed to accurately predict the quality of 360-degree images. The obtained observations and conclusions from the various contributions shall bring insights for assessing the quality of 360-degree images
360-graders bilder, også kjent som rundstrålende bilder, er i sentrum av oppslukende medier. Med økningen i forventninger til sistnevnte, hovedsakelig takket være den aktiverte interaktive og oppslukende opplevelse, er det avgjørende å gi god kvaliteten på opplevelsen (QoE).Denne QoE er betydelig påvirket av kvaliteten på innholdet. Som alle typer visuelle signaler går 360-graders bilder gjennom en sekvens av prosesser, inkludert koding, overføring, dekoding og gjengivelse. Hver av disse prosessene har potensial til å introdusere forvrengninger til innholdet.For å forbedre QoE er vurdering av bildekvalitet (IQA) en av strategiene å følge. Denne oppgaven tar for seg kvalitetsevaluering av 360-graders bilder fra objektive og subjektive perspektiver. Ved å fokusere på påvirkningen av Head Mounted Displays (HMD-er) på den oppfattede kvaliteten til 360-graders bilder, er en psyko-visuell studie designet og utført ved hjelp av fire forskjellige enheter. For dette formålet opprettes et 360-graders bildedatasett og et panel av observatører er involvert. Virkningen av HMD-er på valitetsvurderingene identifiseres og fremheves som en viktig faktor når du utfører subjektive eksperimenter for 360-graders bilder.Fra det objektive perspektivet benchmarket vi først flere konvolusjonelle nevrale nettverk (CNN) under forskjellige konfigurasjoner. Deretter forbedres prosesseringskjeden til CNN-baserte 360-IQA i forskjellige skalaer, fra input-sampling og representasjon til aggregering av kvalitetspoeng. Basert på observasjonene av de ovenfornevnte studiene så vel som benchmark, foreslås to 360-IQA-modeller basert på CNN-er for å nøyaktig forutsi kvaliteten på 360-graders bilder.De innhentede observasjonene og konklusjonene fra de ulike bidragene skal gi innsikt for å vurdere kvaliteten på 360-graders bilder

Dalasari, Venkata Gopi Krishna, and Sri Krishna Jayanty. "Low Light Video Enhancement along with Objective and Subjective Quality Assessment." Thesis, Blekinge Tekniska Högskola, Institutionen för tillämpad signalbehandling, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-13500.

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Enhancing low light videos has been quite a challenge over the years. A video taken in low light always has the issues of low dynamic range and high noise. This master thesis presents contribution within the field of low light video enhancement. Three models are proposed with different tone mapping algorithms for extremely low light low quality video enhancement. For temporal noise removal, a motion compensated kalman structure is presented. Dynamic range of the low light video is stretched using three different methods. In Model 1, dynamic range is increased by adjustment of RGB histograms using gamma correction with a modified version of adaptive clipping thresholds. In Model 2, a shape preserving dynamic range stretch of the RGB histogram is applied using SMQT. In Model 3, contrast enhancement is done using CLAHE. In the final stage, the residual noise is removed using an efficient NLM. The performance of the models are compared on various Objective VQA metrics like NIQE, GCF and SSIM. To evaluate the actual performance of the models subjective tests are conducted, due to the large number of applications that target humans as the end user of the video.The performance of the three models are compared for a total of ten real time input videos taken in extremely low light environment. A total of 25 human observers subjectively evaluated the performance of the three models based on the parameters: contrast, visibility, visually pleasing, amount of noise and overall quality. A detailed statistical evaluation of the relative performance of the three models is also provided.

Guo, Jinjiang. "Contributions to objective and subjective visual quality assessment of 3d models." Thesis, Lyon, 2016. http://www.theses.fr/2016LYSEI099.

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Dans le domaine de l’informatique graphique, les données tridimensionnelles, généralement représentées par des maillages triangulaires, sont employées dans une grande variété d’applications (par exemple, le lissage, la compression, le remaillage, la simplification, le rendu, etc.). Cependant, ces procédés introduisent inévitablement des artefacts qui altèrent la qualité visuelle des données 3D rendues. Ainsi, afin de guider perceptuellement les algorithmes de traitement, il y a un besoin croissant d'évaluations subjectives et objectives de la qualité visuelle à la fois performantes et adaptées, pour évaluer et prédire les artefacts visuels. Dans cette thèse, nous présentons d'abord une étude exhaustive sur les différentes sources d'artefacts associés aux données numériques graphiques, ainsi que l’évaluation objective et subjective de la qualité visuelle des artefacts. Ensuite, nous introduisons une nouvelle étude sur la qualité subjective conçue sur la base de l’évaluations de la visibilité locale des artefacts géométriques, dans laquelle il a été demandé à des observateurs de marquer les zones de maillages 3D qui contiennent des distorsions visibles. Les cartes de distorsion visuelle collectées sont utilisées pour illustrer plusieurs fonctionnalités perceptuelles du système visuel humain (HVS), et servent de vérité-terrain pour évaluer les performances des attributs et des mesures géométriques bien connus pour prédire la visibilité locale des distorsions. Notre deuxième étude vise à évaluer la qualité visuelle de modèles 3D texturés, subjectivement et objectivement. Pour atteindre ces objectifs, nous avons introduit 136 modèles traités avec à la fois des distorsions géométriques et de texture, mené une expérience subjective de comparaison par paires, et invité 101 sujets pour évaluer les qualités visuelles des modèles à travers deux protocoles de rendu. Motivés par les opinions subjectives collectées, nous proposons deux mesures de qualité visuelle objective pour les maillages texturés, en se fondant sur les combinaisons optimales des mesures de qualité issues de la géométrie et de la texture. Ces mesures de perception proposées surpassent leurs homologues en termes de corrélation avec le jugement humain
In computer graphics realm, three-dimensional graphical data, generally represented by triangular meshes, have become commonplace, and are deployed in a variety of application processes (e.g., smoothing, compression, remeshing, simplification, rendering, etc.). However, these processes inevitably introduce artifacts, altering the visual quality of the rendered 3D data. Thus, in order to perceptually drive the processing algorithms, there is an increasing need for efficient and effective subjective and objective visual quality assessments to evaluate and predict the visual artifacts. In this thesis, we first present a comprehensive survey on different sources of artifacts in digital graphics, and current objective and subjective visual quality assessments of the artifacts. Then, we introduce a newly designed subjective quality study based on evaluations of the local visibility of geometric artifacts, in which observers were asked to mark areas of 3D meshes that contain noticeable distortions. The collected perceived distortion maps are used to illustrate several perceptual functionalities of the human visual system (HVS), and serve as ground-truth to evaluate the performances of well-known geometric attributes and metrics for predicting the local visibility of distortions. Our second study aims to evaluate the visual quality of texture mapped 3D model subjectively and objectively. To achieve these goals, we introduced 136 processed models with both geometric and texture distortions, conducted a paired-comparison subjective experiment, and invited 101 subjects to evaluate the visual qualities of the models under two rendering protocols. Driven by the collected subjective opinions, we propose two objective visual quality metrics for textured meshes, relying on the optimal combinations of geometry and texture quality measures. These proposed perceptual metrics outperform their counterparts in term of the correlation with the human judgment

Shahid, Muhammad. "Methods for Objective and Subjective Video Quality Assessment and for Speech Enhancement." Doctoral thesis, Blekinge Tekniska Högskola [bth.se], Faculty of Engineering - Department of Applied Signal Processing, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-00603.

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The overwhelming trend of the usage of multimedia services has raised the consumers' awareness about quality. Both service providers and consumers are interested in the delivered level of perceptual quality. The perceptual quality of an original video signal can get degraded due to compression and due to its transmission over a lossy network. Video quality assessment (VQA) has to be performed in order to gauge the level of video quality. Generally, it can be performed by following subjective methods, where a panel of humans judges the quality of video, or by using objective methods, where a computational model yields an estimate of the quality. Objective methods and specifically No-Reference (NR) or Reduced-Reference (RR) methods are preferable because they are practical for implementation in real-time scenarios. This doctoral thesis begins with a review of existing approaches proposed in the area of NR image and video quality assessment. In the review, recently proposed methods of visual quality assessment are classified into three categories. This is followed by the chapters related to the description of studies on the development of NR and RR methods as well as on conducting subjective experiments of VQA. In the case of NR methods, the required features are extracted from the coded bitstream of a video, and in the case of RR methods additional pixel-based information is used. Specifically, NR methods are developed with the help of suitable techniques of regression using artificial neural networks and least-squares support vector machines. Subsequently, in a later study, linear regression techniques are used to elaborate the interpretability of NR and RR models with respect to the selection of perceptually significant features. The presented studies on subjective experiments are performed using laboratory based and crowdsourcing platforms. In the laboratory based experiments, the focus has been on using standardized methods in order to generate datasets that can be used to validate objective methods of VQA. The subjective experiments performed through crowdsourcing relate to the investigation of non-standard methods in order to determine perceptual preference of various adaptation scenarios in the context of adaptive streaming of high-definition videos. Lastly, the use of adaptive gain equalizer in the modulation frequency domain for speech enhancement has been examined. To this end, two methods of demodulating speech signals namely spectral center of gravity carrier estimation and convex optimization have been studied.

Khaustova, Darya. "Objective assessment of stereoscopic video quality of 3DTV." Thesis, Rennes 1, 2015. http://www.theses.fr/2015REN1S021/document.

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Le niveau d'exigence minimum pour tout système 3D (images stéréoscopiques) est de garantir le confort visuel des utilisateurs. Le confort visuel est un des trois axes perceptuels de la qualité d'expérience (QoE) 3D qui peut être directement lié aux paramètres techniques du système 3D. Par conséquent, le but de cette thèse est de caractériser objectivement l'impact de ces paramètres sur la perception humaine afin de contrôler la qualité stéréoscopique. La première partie de la thèse examine l'intérêt de prendre en compte l'attention visuelle des spectateurs dans la conception d'une mesure objective de qualité 3D. Premièrement, l'attention visuelle en 2D et 3D sont comparées en utilisant des stimuli simples. Les conclusions de cette première expérience sont validées en utilisant des scènes complexes avec des disparités croisées et décroisées. De plus, nous explorons l'impact de l'inconfort visuel causé par des disparités excessives sur l'attention visuelle. La seconde partie de la thèse est dédiée à la conception d'un modèle objectif de QoE pour des vidéos 3D, basé sur les seuils perceptuels humains et le niveau d'acceptabilité. De plus nous explorons la possibilité d'utiliser la modèle proposé comme une nouvelle échelle subjective. Pour la validation de ce modèle, des expériences subjectives sont conduites présentant aux sujets des images stéréoscopiques fixes et animées avec différents niveaux d'asymétrie. La performance est évaluée en comparant des prédictions objectives avec des notes subjectives pour différents niveaux d'asymétrie qui pourraient provoquer un inconfort visuel
The minimum requirement for any 3D (stereoscopic images) system is to guarantee visual comfort of viewers. Visual comfort is one of the three primary perceptual attributes of 3D QoE, which can be linked directly with technical parameters of a 3D system. Therefore, the goal of this thesis is to characterize objectively the impact of these parameters on human perception for stereoscopic quality monitoring. The first part of the thesis investigates whether visual attention of the viewers should be considered when designing an objective 3D quality metrics. First, the visual attention in 2D and 3D is compared using simple test patterns. The conclusions of this first experiment are validated using complex stimuli with crossed and uncrossed disparities. In addition, we explore the impact of visual discomfort caused by excessive disparities on visual attention. The second part of the thesis is dedicated to the design of an objective model of 3D video QoE, which is based on human perceptual thresholds and acceptability level. Additionally we explore the possibility to use the proposed model as a new subjective scale. For the validation of proposed model, subjective experiments with fully controlled still and moving stereoscopic images with different types of view asymmetries are conducted. The performance is evaluated by comparing objective predictions with subjective scores for various levels of view discrepancies which might provoke visual discomfort

Ansari, Yousuf Hameed, and Sohaib Ahmed Siddiqui. "Quality Assessment for HEVC Encoded Videos: Study of Transmission and Encoding Errors." Thesis, Blekinge Tekniska Högskola, Institutionen för tillämpad signalbehandling, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-13656.

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There is a demand for video quality measurements in modern video applications specifically in wireless and mobile communication. In real time video streaming it is experienced that the quality of video becomes low due to different factors such as encoder and transmission errors. HEVC/H.265 is considered as one of the promising codecs for compression of ultra-high definition videos. In this research, full reference based video quality assessment is performed. The raw format reference videos have been taken from Texas database to make test videos data set. The videos are encoded using HM9 reference software in HEVC format. Encoding errors has been set during the encoding process by adjusting the QP values. To introduce packet loss in the video, the real-time environment has been created. Videos are sent from one system to another system over UDP protocol in NETCAT software. Packet loss is induced with different packet loss ratios into the video using NETEM software. After the compilation of video data set, to assess the video quality two kind of analysis has been performed on them. Subjective analysis has been carried on different human subjects. Objective analysis has been achieved by applying five quality matrices PSNR, SSIM, UIQI, VFI and VSNR. The comparison is conducted on the objective measurement scores with the subjective and in the end results deduce from classical correlation methods.

Servetkienė, Vaida. "Gyvenimo kokybės daugiadimensis vertinimas, identifikuojant kritines sritis." Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2013. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2013~D_20131115_113802-40756.

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Disertacijoje nagrinėjama aktuali gyvenimo kokybės vertinimo problema. Mokslinėje literatūroje vis dar nėra vienodo gyvenimo kokybės suvokimo ir mokslinio apibrėžimo. Kiekvienas asmuo šiai sąvokai gali suteikti savo prasminį atspalvį, tačiau moksle gyvenimo kokybė turi būti konkrečiais rodikliais išreiškiama ir matuojama sąvoka, susijusi su visuomenės gerove konkrečioje šalyje. Šio darbo tyrimo objektas yra gyvenimo kokybės vertinimas. Disertacijos tikslas – išanalizavus mokslinius tarpdisciplininius požiūrius į gyvenimo kokybės vertinimą, parengti daugiadimensį gyvenimo kokybės vertinimo modelį ir nustatyti kritines jos sritis Lietuvoje. Darbe atlikta gyvenimo kokybės apibrėžties, koncepcijų ir praktikoje taikomų gyvenimo kokybės vertinimo metodų lyginamoji analizė, konceptualizuota gyvenimo kokybės sąvoka, ją traktuojant kaip ekonomikos mokslo tyrimo objektą, atspindintį valstybės vykdomos ekonominės politikos efektyvumą, nustatytos pagrindinės gyvenimo kokybės sritys, pateikta gyvenimo kokybės koncepcija ir pasiūlyti jos vertinimo metodologiniai principai, sudarytas daugiadimensis gyvenimo kokybės vertinimo modelis, jį taikant, įvertinta Lietuvos gyventojų gyvenimo kokybė ES šalių kontekste ir nustatytos kritinės jos sritys.
The dissertation examines the topical issue of assessment of the quality of life. Scientific literature still does not offer a uniform perception and scientific definition of the quality of life. Every person can provide this concept with his own interpretation, but in science the quality of life must be a concept expressed by means of specific indicators and measured in relation to the welfare of the population in a specific country. The object of research in this dissertation is the assessment of the quality of life. The aim of the dissertation is, upon analysing interdisciplinary scientific approaches to assessment of the quality of life, to develop a multidimensional model of assessment of the quality of life and to identify the critical areas of the quality of life in Lithuania. The author of the dissertation has carried out a comparative analysis of the definition and conceptions of the quality of life and the quality of life assessment methods employed in practice, conceptualised the concept of the quality of life treating it as an object of economic research which reflects the efficiency of the economic policy of the state, identified the key areas of the quality of life, provided a conception of the quality of life and proposed methodological principles for its assessment, developed a multidimensional quality of life assessment model and, by applying the model, evaluated the quality of life of the Lithuanian population in the context of the EU Member States and... [to full text]

Zerman, Emin. "Evaluation et analyse de la qualité vidéo à haute gamme dynamique." Electronic Thesis or Diss., Paris, ENST, 2018. http://www.theses.fr/2018ENST0003.

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Au cours de la dernière décennie, la technologie de l’image et de la vidéo à haute gamme dynamique (High dynamic range - HDR) a attiré beaucoup d’attention, en particulier dans la communauté multimédia. Les progrés technologiques récents ont facilité l’acquisition, la compression et la reproduction du contenu HDR, ce qui a mené à la commercialisation des écrans HDR et à la popularisation du contenu HDR. Dans ce contexte, la mesure de la qualité du contenu HDR joue un rôle fondamental dans l’amélioration de la chaîne de distribution du contenu ainsi que des opérations qui la composent, telles que la compression et l’affichage. Cependant, l’évaluation de la qualité visuelle HDR présente de nouveaux défis par rapport au contenu à gamme dynamique standard (Standard dynamic range -SDR). Le premier défi concerne les nouvelles conditions introduites par la reproduction du contenu HDR, par ex. l’augmentation de la luminosité et du contraste. Même si une reproduction exacte de la luminance d’une scène n’est pas nécessaire pour la plupart des cas pratiques, une estimation précise de la luminance émise est cependant nécessaire pour les mesures d’évaluation objectives de la qualité HDR. Afin de comprendre les effets du rendu d’affichage sur la perception de la qualité, un algorithme permettant de reproduire très précisement une image HDR a été développé et une expérience subjective a été menée pour analyser l’impact de différents rendus sur l’évaluation subjective et objective de la qualité HDR. En outre, afin de comprendre l’impact de la couleur avec la luminosité accrue des écrans HDR, les effets des différents espaces de couleurs sur les performances de compression vidéo HDR ont également été analysés dans une autre étude subjective. Un autre défi consiste à estimer objectivement la qualité du contenu HDR, en utilisant des ordinateurs et des algorithmes. Afin de relever ce défi, la thèse procède à l’évaluation des performances des métriques de qualité d’image HDR avec référence (Full reference-FR). Les images HDR ont une plus grande plage de luminosité et des valeurs de contraste plus élevées. Etant donné que la plupart des métriques de qualité d’image sont développées pour les images SDR, elles doivent être adaptées afin d’estimer la qualité des images HDR. Différentes méthodes d’adaptation ont été utilisées pour les mesures SDR, et elles ont été comparées avec les métriques de qualité d’image existantes développées exclusivement pour les images HDR. De plus, nous proposons une nouvelle méthode d’évaluation des métriques objectives basée sur une nouvelle approche de classification. Enfin, nous comparons les scores de qualité subjectifs acquis en utilisant différentes méthodologies de test subjectives. L’évaluation subjective de la qualité est considérée comme le moyen le plus efficace et le plus fiable d’obtenir des scores de qualité «vérité-terrain» pour les stimuli sélectionnés, et les scores moyens d’opinion (Mean opinion scores-MOS) obtenus sont les valeurs auxquelles les métriques objectives sont entraînées pour correspondre. En fait, de fortes divergences peuvent facilement être rencontrés lorsque différentes bases de données de qualité multimédia sont considérées. Afin de comprendre la relation entre les valeurs de qualité acquises à l’aide de différentes méthodologies, la relation entre les valeurs MOS et les résultats des comparaisons par paires rééchellonés (Pairwise comparisons - PC) a été comparée. A cette fin, une série d’expériences ont été menées entre les méthodologies double stimulus impairment scale (DSIS) et des comparaisons par paires. Nous proposons d’inclure des comparaisons inter-contenu dans les expériences PC afin d’améliorer les performances de rééchelonnement et de réduire la variance inter-contenu ainsi que les intervalles de confiance. Les scores de PC rééchellonés peuvent également être utilisés pour des scénarios subjectifs d’évaluation de la qualité multimédia autres que le HDR
In the last decade, high dynamic range (HDR) image and video technology gained a lot of attention, especially within the multimedia community. Recent technological advancements made the acquisition, compression, and reproduction of HDR content easier, and that led to the commercialization of HDR displays and popularization of HDR content. In this context, measuring the quality of HDR content plays a fundamental role in improving the content distribution chain as well as individual parts of it, such as compression and display. However, HDR visual quality assessment presents new challenges with respect to the standard dynamic range (SDR) case. The first challenge is the new conditions introduced by the reproduction of HDR content, e.g. the increase in brightness and contrast. Even though accurate reproduction is not necessary for most of the practical cases, accurate estimation of the emitted luminance is necessary for the objective HDR quality assessment metrics. In order to understand the effects of display rendering on the quality perception, an accurate HDR frame reproduction algorithm was developed, and a subjective experiment was conducted to analyze the impact of different display renderings on subjective and objective HDR quality evaluation. Additionally, in order to understand the impact of color with the increased brightness of the HDR displays, the effects of different color spaces on the HDR video compression performance were also analyzed in another subjective study. Another challenge is to estimate the quality of HDR content objectively, using computers and algorithms. In order to address this challenge, the thesis proceeds with the performance evaluation of full-reference (FR) HDR image quality metrics. HDR images have a larger brightness range and higher contrast values. Since most of the image quality metrics are developed for SDR images, they need to be adapted in order to estimate the quality of HDR images. Different adaptation methods were used for SDR metrics, and they were compared with the existing image quality metrics developed exclusively for HDR images. Moreover, we propose a new method for the evaluation of metric discriminability based ona novel classification approach. Motivated by the need to fuse several different quality databases, in the third part of the thesis, we compare subjective quality scores acquired by using different subjective test methodologies. Subjective quality assessment is regarded as the most effective and reliable way of obtaining “ground-truth” quality scores for the selected stimuli, and the obtained mean opinion scores (MOS) are the values to which generally objective metrics are trained to match. In fact, strong discrepancies can easily be notified across databases when different multimedia quality databases are considered. In order to understand the relationship between the quality values acquired using different methodologies, the relationship between MOS values and pairwise comparisons (PC) scaling results were compared. For this purpose, a series of experiments were conducted using double stimulus impairment scale (DSIS) and pairwise comparisons subjective methodologies. We propose to include cross-content comparisons in the PC experiments in order to improve scaling performance and reduce cross-content variance as well as confidence intervals. The scaled PC scores can also be used for subjective multimedia quality assessment scenarios other than HDR

Sanches, Silvio Ricardo Rodrigues. "Avaliação objetiva de qualidade de segmentação." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/3/3141/tde-26062014-111553/.

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A avaliação de qualidade de segmentação de vídeos tem se mostrado um problema pouco investigado no meio científico. Apesar disso, estudos recentes na área resultaram em algumas métricas que têm como finalidade avaliar objetivamente a qualidade da segmentação produzida pelos algoritmos. Tais métricas consideram as diferentes formas em que os erros ocorrem (fatores perceptuais) e seus parâmetros são ajustados de acordo com a aplicação em que se pretende utilizar os vídeos segmentados. Neste trabalho apresentam-se: i) uma avaliação da métrica que representa o estado-da-arte, demonstrando que seu desempenho varia de acordo com o algoritmo; ii) um método subjetivo para avaliação de qualidade de segmentação; e iii) uma nova métrica perceptual objetiva, derivada do método subjetivo aqui proposto, capaz de encontrar o melhor ajuste dos parâmetros de dois algoritmos de segmentação encontrados na literatura, quando os vídeos por eles segmentados são utilizados na composição de cenas em ambientes de Teleconferência Imersiva.
Assessment of video segmentation quality is a problem seldom investigated by the scientific community. Nevertheless, recent studies presented some objective metrics to evaluate algorithms. Such metrics consider different ways in which segmentation errors occur (perceptual factors) and its parameters are adjusted according to the application for which the segmented frames are intended. In this work: i) we demonstrate empirically that the performance of existing metrics changes according to the segmentation algorithm; ii) we developed a subjective method to evaluate segmentation quality; and iii) we contribute with a new objective metric derived on the basis of experiments from subjective method in order to adjust the parameters of two bilayer segmentation algorithms found in the literature when these algorithms are used for compose scenes in Immersive Teleconference environments.

Ševčík, Martin. "Modelování vlastností modelu HVS v Matlabu." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2008. http://www.nusl.cz/ntk/nusl-217656.

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In theoretical part Diploma thesis deals with the model of human vision HVS (Human Visual System), which can be used for image quality assessment in TV technique area. It has been described calculations of selected JND (Just Noticeable Difference) metrics, used in evaluation of HVS. In practical part of the thesis it has been suggested and realized simulation model in Matlab, which may be used for evaluation of three JND metrics from color and grayscale images and evaluation in spatial a frequency domain. Results of JND models have been compared to another objective image quality evaluation metrics (MSE, NMSE, SNR and PSNR). For interpretation of dependencies it has been used images with different defined content.

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Books on the topic "Objective and subjective quality assessment":

G, Kapsalis John, ed. Objective methods in food quality assessment. Boca Raton, Fla: CRC Press, 1987.

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Wierzbicki, Michael. Issues in clinical psychology: Subjective versus objective approaches. Boston: Allyn and Bacon, 1993.

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Sell, Helmut. Assessment of subjective well-being: The Subjective Well-Being Inventory (SUBI). New Delhi: World Health Organization, Regional Office for South-East Asia, 1992.

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University of Minnesota. Long-Term Care DECISIONS Resource Center., ed. Assessment of subjective well-being and client satisfaction. [Minnesota]: University of Minnesota, Long-Term Care Decisions Resource Center, 1991.

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Union, European Broadcasting. Assessment methods for the subjective evaluation of the quality of sound programming material: Music. Geneva: European Broadcasting Union, 1997.

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Lorsakul, Auranuch. Objective Assessment of Image Quality: Extension of Numerical Observer Models to Multidimensional Medical Imaging Studies. [New York, N.Y.?]: [publisher not identified], 2015.

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Hyŏmnyŏktan, Yŏnse Taehakkyo Sanhak. In'gan sigak t'ŭkching kiban chugwanjŏk hwajil ch'ŭkchŏng pangbŏp mit changch'i kisul kaebal e kwanhan yŏn'gu =: A study on the objective quality assessment system based on human visual system. [Kyŏnggi-do Kwach'ŏn-si]: Chisik Kyŏngjebu, 2009.

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Varra, Lucia, ed. Le case per ferie: valori, funzioni e processi per un servizio differenziato e di qualità. Florence: Firenze University Press, 2012. http://dx.doi.org/10.36253/978-88-6655-094-5.

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The research aims to analyse the concept of the 'holiday home' in Italy, a phenomenon that is not very well known and not given sufficient visibility in the tourism sector. The objective is to grasp the role and the degree of response that the holiday homes can offer in order to consolidate a genuinely social and sustainable tourism, which is the specific feature of the Associazione di Promozione Sociale Santa Lucia. The holiday homes represent an efficacious response to the emerging motivations for travel and a new sensitivity towards social and sustainable tourism. The growing opportunities for this sector call for reflection on the mission and future positioning of the holiday homes within the tourist reception panorama, with the deriving choices relating to: the offer, consisting of values more than of services; the functions fulfilled, intimately bound up with the demands of the individual and the territory; the quality of the service, which is not generic but linked to the functions and can be measured in line with objective and subjective parameters. Strategic awareness, managerial capacity and elevated professionalism at all levels are the factors of legitimisation and success of this original reception formula.

Ismailov, Nariman, Samira Nadzhafova, and Aygyun Gasymova. Bioecosystem complexes for the solution of environmental, industrial and social problems (on the example of Azerbaijan). ru: INFRA-M Academic Publishing LLC., 2020. http://dx.doi.org/10.12737/1043239.

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A key objective of the modern development of society is the observance of ecological and socio-economic unity in human life and comprehensive improvement of environment and quality of life should be considered in close connection with the quality of the natural landscape. The formation of scientific understanding of the unity of society and nature is driven by the need for practical implementation of such unity. This defines the focus of this monograph. Given the overall assessment of the current state of the environment in Azerbaijan, considers the scenarios for the future development of the area. The prospects of the use of biotechnology in integrated environmental protection. In the framework of the above to address complex social, environmental and production problems in Azerbaijan developed scientific basis of integrated system of industrial farms — biclusters with a closed production cycle through effective utilization of regional biological resources, whose interactions and relationships take on the character of vzaimodeistvie components for obtaining focused final result with high practical importance. Microbiological, biochemical and technological processes are the basis of all development of biotechnology. Presents the development will help strengthen the ties between science and production, establishing mechanisms to conduct applied research in the field of innovation and creation of knowledge-based technologies in solving current and future environmental problems in Azerbaijan. We offer innovative ideas distinguishes the potential need for their materialization into new products, technologies and services, including the widespread use of digital technologies to design dynamic digital environmental map in space and in time. For students, scientific and engineering-technical workers, students and specializing in environmental technology, environmental protection.

Sullivan, Mark D. Health as the Capacity for Action. Oxford University Press, 2016. http://dx.doi.org/10.1093/med/9780195386585.003.0006.

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Objective definitions of health and disease are favored because they promise a value-free measure of health problems and health care needs. But objective health does not simply cause the subjective experience of health. Self-rated health predicts mortality, disability, and hospitalizations for up to a decade after controlling for objective measures of health. Objective tissue abnormalities cannot be discovered to be pathological without reference to the experiences of patients acting in their natural environment. Patients adapt to chronic illness and its functional deficits over time with real improvements in their quality of life. Problems like pain and depression do not distort quality of life assessments, but are at their core. Since neither objective nor subjective models of health are valid, we must derive a different model: health as capacity for action. Any adequate approach to health must foster the patient’s sense of agency, her capacity to achieve her vital goals.

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Book chapters on the topic "Objective and subjective quality assessment":

Koumaras, Harilaos G. "Objective and Subjective Assessment Methods of Video Quality in Multimedia Broadcasting." In Mobile Multimedia Broadcasting Standards, 417–34. Boston, MA: Springer US, 2009. http://dx.doi.org/10.1007/978-0-387-78263-8_14.

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Solomon, Natalie Leah, and Vlad Manea. "Quantifying Energy and Fatigue: Classification and Assessment of Energy and Fatigue Using Subjective, Objective, and Mixed Methods towards Health and Quality of Life." In Quantifying Quality of Life, 79–117. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-94212-0_4.

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AbstractEnergy and fatigue carry important implications for vitality and overall quality of life. Lacking energy and experiencing fatigue can be both burdensome as well as adaptive. This chapter first classifies energy and fatigue and then reviews their measurement. This chapter closes with opportunities for future directions.Energy and fatigue are present under varying conditions including in daily performance, during and after acute physical or mental strain (capacity), and in the context of chronic conditions. Energy and fatigue have been measured both subjectively and objectively. Subjective outcomes can be derived from self-reported scales and prompts; objective outcomes may be derived from performance and capacity tasks and technology-reported physiological, biological, and behavioural markers. The scales and tasks employed to measure energy have been traditionally validated but may lack daily life context and ecological validity. Prompts and behavioural monitoring methods are emerging as promising alternatives.Energy and fatigue have also been routinely monitored for specific diseases and occupations. However, fewer studies monitor healthy individuals through consumer technology in daily life contexts. More research is needed for an objective, unobtrusive, longitudinal, and contextual measurement of energy and fatigue in the healthy general population, in service of improving health, wellbeing, and quality of life.

Barkowsky, Marcus, Kjell Brunnström, Touradj Ebrahimi, Lina Karam, Pierre Lebreton, Patrick Le Callet, Andrew Perkis, et al. "Subjective and Objective Visual Quality Assessment in the Context of Stereoscopic 3D-TV." In 3D-TV System with Depth-Image-Based Rendering, 413–37. New York, NY: Springer New York, 2012. http://dx.doi.org/10.1007/978-1-4419-9964-1_14.

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Nakić, Matej, and Igor Mikloušić. "Beyond Pen and Paper: Reimagining Assessment of Personal Relationships and Quality of Life Using Digital Technologies." In Quantifying Quality of Life, 355–69. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-94212-0_14.

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AbstractPersonal interactions are an important element of an individual’s health and life quality in the long term. As the site of many interpersonal interactions has been moved to the digital domain, human society has never been more intertwined. The digital footprints of interpersonal interactions can be quantified and measured via smartphones and wearables, providing more objective, quantitative, and accurate measurements. This chapter focuses on quantifying personal relationships in the context of quality of life, specifically focusing on novel technology-based quantification solutions. It first analyzes traditional qualitative quality of life measures based on subjective self-reporting that include measures of personal relationships, specifically the WHOQOL-BREF, WHOQOL-100, RAND-36, KIDSCREEN-27, SWLS, and Beach Center FQOL, as well as other non-validated measures. The chapter then proposes novel technological solutions for data gathering and analysis by introducing the concept of digital item representation, a process that leverages personal datasets originating from smartphones and wearables. The chapter also discusses issues relating to users’ privacy that influence the acceptance of such everyday technologies as well as the quality of data collected in the long term.

Mele, Maria Laura, Damon Millar, and Christiaan Erik Rijnders. "Using Spatio-Temporal Saliency to Predict Subjective Video Quality: A New High-Speed Objective Assessment Metric." In Human-Computer Interaction. User Interface Design, Development and Multimodality, 353–68. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-58071-5_27.

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Kowalik-Urbaniak, Ilona A., Jane Castelli, Nasim Hemmati, David Koff, Nadine Smolarski-Koff, Edward R. Vrscay, Jiheng Wang, and Zhou Wang. "Modelling of Subjective Radiological Assessments with Objective Image Quality Measures of Brain and Body CT Images." In Lecture Notes in Computer Science, 3–13. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-20801-5_1.

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Cheeseman, Alison K., Ilona A. Kowalik-Urbaniak, and Edward R. Vrscay. "Objective Image Quality Measures of Degradation in Compressed Natural Images and their Comparison with Subjective Assessments." In Lecture Notes in Computer Science, 163–72. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-41501-7_19.

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Ghosh, Surjya, Johanna Löchner, Bivas Mitra, and Pradipta De. "Your Smartphone Knows you Better than you May Think: Emotional Assessment ‘on the Go’ Via TapSense." In Quantifying Quality of Life, 209–67. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-94212-0_10.

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AbstractQuality of life (QoL) is a subjective term often determined by various aspects of living, such as personal well-being, health, family, and safety. QoL is challenging to capture objectively but can be anticipated through a person’s emotional state; especially positive emotions indicate an increased QoL and may be a potential indicator for other QoL aspects (such as health, safety). Affective computing is the study of technologies that can quantitatively assess human emotions from external clues. It can leverage different modalities including facial expression, physiological responses, or smartphone usage patterns and correlate them with the person’s life quality assessments. Smartphones are emerging as a main modality, mostly because of their ubiquitous availability and use throughout daily life activities. They include a plethora of onboard sensors (e.g., accelerometer, gyroscope, GPS) and can sense different user activities passively (e.g., mobility, app usage history). This chapter presents a research study (here referred to as the TapSense study) that focuses on assessing the individual’s emotional state from the smartphone usage patterns. In this TapSense study, the keyboard interaction of n = 22 participants was unobtrusively monitored for 3 weeks to determine the users’ emotional state (i.e., happy, sad, stressed, relaxed) using a personalized machine learning model. TapSense can assess emotions with an average AUCROC of 78%(±7% std). We summarize the findings and reflect upon these in the context of the potential developments within affective computing at large, in the long term, indicating a person’s quality of life.

Pijpe, A., K. L. M. Gardien, R. E. van Meijeren-Hoogendoorn, E. Middelkoop, and Paul P. M. van Zuijlen. "Scar Symptoms: Pigmentation Disorders." In Textbook on Scar Management, 109–15. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-44766-3_12.

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AbstractThis chapter provides an overview of the epidemiology, pathophysiology, course, measurement, and potential therapies for pigmentation disorders in scars. Pigmentation problems are a common consequence of deep partial- and full-thickness burns, other skin trauma or disease, and surgical procedures. Both hypopigmentation and hyperpigmentation can cause esthetic and psychological issues, which may influence quality of life. The role of melanocytes and the maturation of pigmentation problems are discussed. To determine the severity of pigmentation problems and for therapeutic evaluation, different subjective and objective methods have been validated. Simple and easy-to-use measurement instruments are available based on spectrophotometric techniques. Also scar assessment scales with subscales for color and pigmentation are convenient and validated methods for quantitative evaluation of skin pigment disorders. Treatment options are discussed and include camouflage therapy, topical treatments, chemical peels, laser therapy, dermatography, dermabrasion, microneedling, skin grafting, cell therapy, and excision. It is advised to first try the conservative options and to dose and monitor the treatment to prevent overshoot and complications.

Newell, Philip, and Keith Holland. "Subjective and Objective Assessment." In Loudspeakers, 295–334. Second edition. | New York, NY : Routledge, 2019. | Series: Audio Engineering Society presents ...: Routledge, 2018. http://dx.doi.org/10.4324/9781315149202-9.

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Conference papers on the topic "Objective and subjective quality assessment":

Barman, Nabajeet, Yuriy Reznik, and Maria Martini. "Datasheet for Subjective and Objective Quality Assessment Datasets." In 2023 15th International Conference on Quality of Multimedia Experience (QoMEX). IEEE, 2023. http://dx.doi.org/10.1109/qomex58391.2023.10178546.

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Queluz, Maria Paula, Francisco Lopes, João Ascenso, and António Rodrigues. "Subjective and objective quality assessment of omnidirectional video." In Applications of Digital Image Processing XLI, edited by Andrew G. Tescher. SPIE, 2018. http://dx.doi.org/10.1117/12.2321679.

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Picard, Marthe, Lesley Cockmartin, Kristin Buelens, Sandra Postema, Valerie Celis, Cédric Aesseloos, and Hilde Bosmans. "Objective and subjective assessment of mammographic positioning quality." In Sixteenth International Workshop on Breast Imaging, edited by Hilde Bosmans, Nicholas Marshall, and Chantal Van Ongeval. SPIE, 2022. http://dx.doi.org/10.1117/12.2624400.

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Sevcik, L., L. Behan, J. Frnda, M. Uhrina, J. Bienik, and M. Voznak. "Prediction of Subjective Video Quality Based on Objective Assessment." In 2018 26th Telecommunications Forum (TELFOR). IEEE, 2018. http://dx.doi.org/10.1109/telfor.2018.8612127.

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Uhrina, Miroslav, Juraj Bienik, Lukas Sevcik, and Miroslav Voznak. "Video Quality Assessment: Relationship between objective and subjective methods." In 2019 27th Telecommunications Forum (TELFOR). IEEE, 2019. http://dx.doi.org/10.1109/telfor48224.2019.8971137.

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Gaballah, Amr, Vijay Parsa, Monika Andreetta, and Scott Adams. "Objective and Subjective Assessment of Amplified Parkinsonian Speech Quality." In 2018 40th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC). IEEE, 2018. http://dx.doi.org/10.1109/embc.2018.8512618.

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Istepanian, R. S. H., N. Philip, M. G. Martini, N. Amso, and P. Shorvon. "Subjective and objective quality assessment in wireless teleultrasonography imaging." In 2008 30th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE, 2008. http://dx.doi.org/10.1109/iembs.2008.4650422.

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Wang, Anyang, Guangtao Zhai, Yuanchun Chen, Zhaohui Che, and Xiaokang Yang. "Subjective and objective quality assessment for color changed images." In 2017 IEEE International Symposium on Broadband Multimedia Systems and Broadcasting (BMSB). IEEE, 2017. http://dx.doi.org/10.1109/bmsb.2017.7986169.

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Hou, Limin, Weiqi Wu, Shuang Yang, Tao Yang, and Xinpeng Zhang. "Subjective and objective quality assessment of re-sampling audio." In 2012 International Conference on Audio, Language and Image Processing (ICALIP). IEEE, 2012. http://dx.doi.org/10.1109/icalip.2012.6376634.

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Ma, Lin, Weisi Lin, Chenwei Deng, and King N. Ngan. "Study of subjective and objective quality assessment of retargeted images." In 2012 IEEE International Symposium on Circuits and Systems - ISCAS 2012. IEEE, 2012. http://dx.doi.org/10.1109/iscas.2012.6271858.

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Reports on the topic "Objective and subjective quality assessment":

Rebelo, André, João R. Pereira, Paulo Cunha, Manuel J. Coelho-e-Silva, Lauren B. Sherar, and João Valente-dos-Santos. Training Load, Neuromuscular Fatigue and Well-Being in Volleyball: A Systematic Review. INPLASY - International Platform of Registered Systematic Review and Meta-analysis Protocols, July 2022. http://dx.doi.org/10.37766/inplasy2022.7.0059.

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Review question / Objective: This systematic review aims to compile and order all the training load measures, all fatigue assessments, and all well-being questionnaires used in volleyball training/match monitoring, systematizing them. Condition being studied: Training load: cumulative amount of stress placed on an individual from multiple sessions and games over a period of time. Neuromuscular fatigue: A response that is less than the expected or anticipated contractile response, for a given stimulation. Well-being: A continuous, active process, which is geared towards balancing one’s physical, emotional, social, intellectual and spiritual wellness in order to enhance one’s life quality.5 In sport science the subjective measurement of the response to training and competition are used through the athlete self-report measures (ASRMs). In practice, these often comprise brief, single-item checklists derived from validated questionnaires that are intended to be completed daily.

Andrabi, Tahir, and Christina Brown. Subjective versus Objective Incentives and Teacher Productivity. Research on Improving Systems of Education (RISE), March 2022. http://dx.doi.org/10.35489/bsg-rise-wp_2022/092.

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A central challenge facing firms is how to incentivize employees. While objective, output-based incentives may be theoretically ideal, in practice they may lead employees to reduce effort on non-incentivized outcomes and may fail in settings where effort is weakly tied to output. We study the effect of subjective incentives (manager performance evaluation) and objective incentives (test score-based) relative to no incentives for teachers using an RCT in 230 Pakistani schools. First, we show that subjective and objective incentives both increase test scores and have similar magnitude effects. However, objective incentives decrease non-test score student outcomes relative to subjective incentives. Second, we show that teachers’ effort response is very different under each scheme, with attendance increasing under subjective and teaching quality decreasing under objective. Finally, we rationalize these effects through the lens of a moral hazard model with multi-tasking. We use within-treatment variation to isolate the causal effect of contract noise and distortion and show that these channels explain most of our reduced form effects.

Llorca, Manuel, Ana Rodriguez-Alvarez, and Tooraj Jamasb. Objective vs. Subjective Fuel Poverty and Self-assessed Health. Copenhagen School of Energy Infrastructure, 2021. http://dx.doi.org/10.22439/csei.pb.011.

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Identification of fuel poverty and its impact on individuals is a growing social issue. Classifying households using subjective measures of fuel poverty yields different results than when objective measures are used. Moreover, there are assessment-related difficulties in establishing the effects on health and wellbeing, which hinders policy design to tackle this problem. We analyse the influence of several socioeconomic characteristics on self-reported health with special focus on fuel poverty and find that poor housing conditions, low income, material deprivation and fuel poverty have a negative impact on health.

Lora, Eduardo, and Andrew Powell. A New Way of Monitoring the Quality of Urban Life. Inter-American Development Bank, November 2011. http://dx.doi.org/10.18235/0011346.

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This paper proposes a methodology to resolve the problems that result from using a combination of objective and subjective information in evaluating urban quality of life. The paper further suggests techniques to identify and rank issues of potential importance for urban dwellers. In order to combine objective and subjective information in a coherent manner and focus on the most relevant dimensions of the quality of life in a city or neighborhood, the paper attempts to exploit the complementary nature of two approaches: the "hedonic" approach, which employs market prices for housing, and the "life satisfaction" approach, which addresses subjective well-being. Results using both approaches in selected Latin American cities are discussed and compared. The paper concludes with a discussion of potential uses of the two-pronged methodology for policy analysis.

Guillen, Joel, Lluis Capdevila, Josep-Maria Losilla, and Eva Parrado. Ecological Momentary Assessment of the stress-recovery process through technology mHealth in sports: a scoping review protocol. INPLASY - International Platform of Registered Systematic Review and Meta-analysis Protocols, March 2023. http://dx.doi.org/10.37766/inplasy2023.3.0089.

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Review question / Objective: The objective of this scoping review is to identify the EMA methodologies through mHealth technology to monitor the sport load or the stress-recovery process in athletes. The specific objectives are: - To describe the relationship between the external (distance, accelerations, decelerations, etc.) and internal (physiological, cardiovascular, neuromuscular, subjective, etc.) parameters, and the technology used for the monitoring. - To describe and classify the methodologies and the technology used according to individual or team sports. - To analyse the relationship between the subjective and objective parameters of the internal measures.

Tetaz, Martín, Guillermo Cruces, and Andrés Ham. Quality of Life in Buenos Aires Neighborhoods: Hedonic Price Regressions and the Life Satisfaction Approach. Inter-American Development Bank, September 2009. http://dx.doi.org/10.18235/0011267.

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This paper studies quality of life for urban neighborhoods and their determinants in the Buenos Aires Metropolitan Area (AMBA). First, hedonic price regressions for residential prices are augmented with neighborhood characteristics, based on a real estate database with indicators on each property's distance to public facilities and amenities, and on a smaller survey with greater detail. Second, following recent developments in the field of happiness research, the document assesses the importance of different neighborhood characteristics on quality of life by interacting objective and subjective indicators. The results indicate a strong but not perfect correlation between real estate prices, income levels and neighborhood characteristics, suggesting scope for welfare-improving policy interventions.

Mushongera, Darlington, Prudence Kwenda, and Miracle Ntuli. An analysis of well-being in Gauteng province using the capability approach. Gauteng City-Region Observatory, 2020. http://dx.doi.org/10.36634/2020.op.1.

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As countries across the globe pursue economic development, the improvement of individual and societal well-being has increasingly become an overarching goal. In the global South, in particular, high levels of poverty, inequality and deteriorating social fabrics remain significant challenges. Programmes and projects for addressing these challenges have had some, but limited, impact. This occasional paper analyses well-being in Gauteng province from a capability perspective, using a standard ‘capability approach’ consistent with Amartya Sen’s first conceptualisation, which was then operationalised by Martha Nussbaum. Earlier research on poverty and inequality in the Gauteng City-Region was mainly based on objective characteristics of well-being such as income, employment, housing and schooling. Using data from the Gauteng City-Region Observatory’s Quality of Life Survey IV for 2015/16, our capability approach provides a more holistic view of well-being by focusing on both objective and subjective aspects simultaneously. The results confirm the well-known heterogeneity in human conditions among South African demographic groups, namely that capability achievements vary across race, age, gender, income level and location. However, we observe broader (in both subjective and objective dimensions) levels of deprivation that are otherwise masked in the earlier studies. In light of these findings, the paper recommends that policies are directly targeted towards improving those capability indicators where historically disadvantaged and vulnerable groups show marked deprivation. In addition, given the spatial heterogeneities in capability achievements, we recommend localised interventions in capabilities that are lagging in certain areas of the province.

Yunovich and Tossey. L52207 A Rapid Quality Assessment Method of Magnesium Anodes for Underground Pipeline Service. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), January 2008. http://dx.doi.org/10.55274/r0010960.

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Girth weld defect acceptance criteria are set and enforced in pipeline constructions per federal regulations (CFR 49 Parts 192 and 195). With the increased use of mechanized welding and AUT (Automated Ultrasonic Testing) in new pipeline constructions, alternative defect acceptance criteria based on ECA (Engineering Critical Assessment) principles are frequently used in lieu of the traditional workmanship criteria that are in the main body of API Standard 1104. Unfortunately, the current alternative defect acceptance criteria of API 1104 Appendix A has not been kept up-to-date with new linepipe materials, welding processes, and pipeline service environments. The objective of this project is to provide technical basis for updating the alternative girth weld defect acceptance criteria in API 1104 Appendix A and other similar codes and standards. There are two focus areas in this project. The first focus area is to update the alternative defect acceptance criteria to address the immediate need of pipeline constructions in the U.S., typically with pipeline longitudinal strains less than 0.5%, or alternatively termed stress-based design. The materials in the new constructions are typically of micro-alloyed type and the grades are moving higher, up to X80 and X100. These materials did not exist when the current API 1104 Appendix A was adopted. Their behavior is sufficiently different that a fresh look in the current environment is needed. The second focus area is to develop a set of procedures that may be used for determining the girth weld defect acceptance level under high longitudinal strains ( greater than 0.5% and up to 2-4%).

Chong, Alberto E., and Luisa Zanforlin. Inward-Looking Policies, Institutions, Autocrats, and Economic Growth in Latin America: An Empirical Exploration. Inter-American Development Bank, April 2001. http://dx.doi.org/10.18235/0011570.

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This paper explores the institutional determinants of economic growth in Latin America by taking advantage of recent empirical research that employs subjective and objective measures to test for a possible "Northian" explanation that links institutional quality and economic growth. I provide a framework that helps better understand the policymakers' choices and persistence regarding inward-looking policies that were pursued between the 1930s and the 1980s by arguing that in the Latin American case Olson's (1982) idea of encompassing interest should be expanded to cover not only the economic stakes of power holders, but also, their political stakes, somewhat along the lines of work by Robinson (1997).

Komppula, Birgitta, Tomi Karppinen, Henrik Virta, Anu-Maija Sundström, Iolanda Ialongo, Kaisa Korpi, Pia Anttila, Jatta Salmi, Johanna Tamminen, and Katja Lovén. Air quality in Finland according to air quality measurements and satellite observations. Finnish Meteorological Institute, September 2021. http://dx.doi.org/10.35614/isbn.9789523361409.

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In this report the current air quality in Finland has been assessed with air quality measurement data and satellite observations. The assessment of ambient air concentrations included following air impurities: NO2, NOx, PM10, PM2,5, SO2, CO, O3, benzo(a)pyrene, benzene, Pb, As, Cd ja Ni. For these pollutants air quality assessment thresholds are given in air quality legislation (2008/50/EY, 2004/107/EY). Assessment has been performed for air quality zones. The main data set included air quality measurements performed in Finland during 2015–2019. Satellite observations were used as an objective assessment tool in analysis of the spatial variation of NO2 and CO concentrations. Air quality measurements show that air quality has improved in Finland in many respects. Especially the need to monitor NO2 and PM10 with continuous measurements has decreased. Growing understanding of national benzo(a)pyrene concentrations has increased the monitoring needs. Efforts to decrease ozone levels still requires international actions. SO2, CO, benzene and heavy metal concentrations are on a low level in Finland outside industrial areas and other assessment methods than continuous monitoring can be used, and the number of continuous monitoring sites has already decreased. Satellite-based concentrations of nitrogen dioxide and carbon monoxide as well as their spatial variation in Finland were analyzed using observations from the TROPOsperic Monitoring Instrument (TROPOMI). The analysis of CO over Finland was carried out for the first time in this project. Results show that overall annual CO concentrations over Finland are low and spatial variability is small. Also, NO2 concentrations over Finland are rather low, but spatial patterns are more clearly visible. The highest NO2 concentrations are observed over the largest cities. By establishing a relationship between ground-based and satellite total column concentrations, surface concentrations of NO2 and CO were estimated from the satellite data for the zones. The satellite-based estimate for annual NO2 surface concentration over Helsinki metropolitan area is 28 μg/m3, and for the rest of Finland mostly between 10–15 μg/m3. For CO the differences between monitoring areas are small, with estimates varying between 160–164 μg/m3 or in other words about 0,16 mg/m3.