Bibliografías temáticas / Perceptual mapping

Literatura académica sobre el tema "Perceptual mapping"

Autor: Grafiati
Publicado: 4 de junio de 2021
Última modificación: 19 de febrero de 2022

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Artículos de revistas sobre el tema "Perceptual mapping"

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Arfib, D., J. M. Couturier, L. Kessous y V. Verfaille. "Strategies of mapping between gesture data and synthesis model parameters using perceptual spaces". Organised Sound 7, n.º 2 (agosto de 2002): 127–44. http://dx.doi.org/10.1017/s1355771802002054.

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This paper is about mapping strategies between gesture data and synthesis model parameters by means of perceptual spaces. We define three layers in the mapping chain: from gesture data to gesture perceptual space, from sound perceptual space to synthesis model parameters, and between the two perceptual spaces. This approach makes the implementation highly modular. Both perceptual spaces are developed and depicted with their features. To get a simple mapping between the gesture perceptual subspace and the sound perceptual subspace, we need to focus our attention on the two other mappings. We explain the mapping types: explicit/implicit, static/dynamic. We also present the technical and aesthetical limits introduced by mapping. Some practical examples are given of the use of perceptual spaces in experiments done at LMA in a musical context. Finally, we discuss several implications of the mapping strategies: the influence of chosen mapping limits onto performers' virtuosity, and the incidence of mapping on the learning process with virtual instruments and on improvisation possibilities.
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UR, Orth y J. Turečková. "Segmenting the tourism market using perceptual and attitudinal mapping". Agricultural Economics (Zemědělská ekonomika) 48, No. 1 (29 de febrero de 2012): 36–48. http://dx.doi.org/10.17221/5286-agricecon.

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Decreasing numbers of tourists to the Czech Republic point at a weakening competitive position of Czech destinations during the most recent years. For many communities, tourism may be a short-lived economic dream when understanding of tourists´ perceptions and travel motives is lacking. The two objectives pursued in this study are 1) an identification of the positions of competing destinations and 2) an a-posteriori segmentation with psychographic variables. Market segmentation becomes the crucial factor in the strategic design process of target marketing. Like many other markets, tourism markets do not respond homogeneously to marketing activities. Subdividing visitors into useful groups may provide a basis for competitive advantage. Our study establishes taxonomy of visitors to Southern Moravia. The study tries to overcome well-known insufficiencies of single segmentation approaches by exploiting the advantage of the multivariate nature of combined push factors, pull factors, and other factors of more restrictive nature (i.e. time and money). The segmentation task employs multivariate data analysis techniques such as factor analysis, cluster analysis and multi-dimensional scaling. Recent research on the European Vacation Style Typology is incorporated.
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Proctor, Robert W., Huifang Wang y Kim-Phuong L. Vu. "Influences of different combinations of conceptual, perceptual, and structural similarity on stimulus-response compatibility". Quarterly Journal of Experimental Psychology Section A 55, n.º 1 (febrero de 2002): 59–74. http://dx.doi.org/10.1080/02724980143000163.

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This study evaluated the hypothesis that an increase in set-level stimulus-response compatibility produces facilitation for congruent mappings and interference for incongruent mappings. The degree of set-level compatibility was manipulated by varying combinations of conceptual, perceptual, and structural similarity. Experiment 1 varied perceptual similarity, by combining two stimulus codes (spatial, verbal) with two response modalities (manual, vocal) for orthogonal spatial dimensions, which have structural similarity. The element-level mapping effect did not vary as a function of the code-modality relation, in contrast to findings obtained with parallel spatial dimensions, which also have conceptual similarity. Experiment 2 manipulated combinations of conceptual and perceptual similarity by combining vertical and horizontal stimulus and response orientations, using verbal or spatial stimuli and vocal responses. The element-level mapping effect was larger for parallel than orthogonal orientations, with congruent mappings showing facilitation and incongruent mappings showing interference. The largest effect was facilitation for parallel orientations with the verbal-vocal set, consistent with the view that perceptual similarity contributes to performance primarily when responding with the identity of the stimulus. Our results indicate that conceptual similarity, but not perceptual similarity, produces the facilitation/interference pattern suggestive of automatic activation of the corresponding response regardless of mapping.
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Huber, Joel y Richard M. Johnson. "APM System for Adaptive Perceptual Mapping". Journal of Marketing Research 25, n.º 1 (febrero de 1988): 119. http://dx.doi.org/10.2307/3172939.

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Krishnatray, Pradeep, Subhadip Roy y Rahul Gadekar. "Perceptual Mapping of Hindi News Channels". Journal of Creative Communications 5, n.º 1 (marzo de 2010): 47–62. http://dx.doi.org/10.1177/097325861100500103.

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Katahira, Hotaka. "Perceptual Mapping Using Ordered Logit Analysis". Marketing Science 9, n.º 1 (febrero de 1990): 1–17. http://dx.doi.org/10.1287/mksc.9.1.1.

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Ganguly, Indroneil, Ivan Eastin y Douglas MacLachlan. "An analysis of the US decking materials market: perceptual mapping approach". Canadian Journal of Forest Research 41, n.º 4 (abril de 2011): 669–81. http://dx.doi.org/10.1139/x10-244.

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This paper analyzes the product positioning and market demand of preservative-treated, naturally decay-resistant, and composite decking materials in the United States using an innovative perceptual mapping technique. Market analysis using perceptual mapping is generally used for end-user market scenarios for strategic planning. This paper establishes that the perceptual mapping technique can also be a valuable tool for analyzing the US decking products market, which is predominantly a business-to-business (B2B) market. Using perceptual mapping of the US decking market, this paper proposes a method for incorporating market demand density on a perceptual space, incorporating a kernel regression based nonparametric demand distribution. Representation of products and demand distribution on the same perceptual space in the proposed mapping technique enables simultaneous visualization of product positioning and demand density distribution in the marketplace. The mapping results obtained in this paper will enable business decision makers in the US decking industry to strategically position their offerings based on existing product positioning and market demand distribution. The data used for the study were collected through a national survey of 368 professional deck builders and homebuilders.
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Lansford, Kaitlin L. y Julie M. Liss. "Vowel Acoustics in Dysarthria: Mapping to Perception". Journal of Speech, Language, and Hearing Research 57, n.º 1 (febrero de 2014): 68–80. http://dx.doi.org/10.1044/1092-4388(2013/12-0263).

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Purpose The aim of the present report was to explore whether vowel metrics, demonstrated to distinguish dysarthric and healthy speech in a companion article (Lansford & Liss, 2014), are able to predict human perceptual performance. Method Vowel metrics derived from vowels embedded in phrases produced by 45 speakers with dysarthria were compared with orthographic transcriptions of these phrases collected from 120 healthy listeners. First, correlation and stepwise multiple regressions were conducted to identify acoustic metrics that had predictive value for perceptual measures. Next, discriminant function analysis misclassifications were compared with listeners' misperceptions to examine more directly the perceptual consequences of degraded vowel acoustics. Results Several moderate correlative relationships were found between acoustic metrics and perceptual measures, with predictive models accounting for 18%–75% of the variance in measures of intelligibility and vowel accuracy. Results of the second analysis showed that listeners better identified acoustically distinctive vowel tokens. In addition, the level of agreement between misclassified-to-misperceived vowel tokens supports some specificity of degraded acoustic profiles on the resulting percept. Conclusion Results provide evidence that degraded vowel acoustics have some effect on human perceptual performance, even in the presence of extravowel variables that naturally exert influence in phrase perception.
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Shaury, Sofyan. "ANALISIS POSITIONING E-WALLET BERDASARKAN PERCEPTUAL MAPPING". SEIKO : Journal of Management & Business 3, n.º 1 (16 de diciembre de 2019): 187. http://dx.doi.org/10.37531/sejaman.v3i1.531.

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Pan, David W. y John A. W. Baker. "PERCEPTUAL MAPPING OF BANNED SUBSTANCES IN ATHLETICS". Journal of Sport and Social Issues 22, n.º 2 (mayo de 1998): 170–82. http://dx.doi.org/10.1177/019372398022002004.

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Tesis sobre el tema "Perceptual mapping"

1

Gilbert, Stephen A. B. (Stephen Alex Boatwright). "Mapping mental spaces : how we organize perceptual and cognitive information". Thesis, Massachusetts Institute of Technology, 1997. http://hdl.handle.net/1721.1/10151.

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NUNES, DEBORAH COUTINHO GIL. "PERCEPTUAL MAPPING OF HOTELS IN RIO DE JANEIRO: A COMPOSITIONAL APPROACH". PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2014. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=24468@1.

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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO
COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR
PROGRAMA DE SUPORTE À PÓS-GRADUAÇÃO DE INSTS. DE ENSINO
A indústria hoteleira vem se desenvolvendo significativamente nos últimos anos impulsionada por grandes investimentos privados e do governo no setor de turismo e infraestrutura. Inteiramente vinculada à demanda turística e inserida no setor de serviços, a indústria apresenta um composto variável de bens e serviços, que requer o entendimento das necessidades e dos desejos de seus clientes para adotar as estratégias adequadas. Tal mercado é particularmente sensível à qualidade dos serviços prestados e produtos oferecidos aos hóspedes. A satisfação do consumidor é, portanto, um dos principais objetivos do setor, que busca criar valor para os seus clientes ao antecipar e gerenciar suas expectativas, sejam elas no segmento de turismo de lazer, sejam no segmento de turismo de negócios. Nesta pesquisa alguns atributos apontados como essenciais aos serviços de hotelaria foram utilizados com o objetivo de entender como o mercado percebe um conjunto de hotéis localizados na cidade do Rio de Janeiro. Para tanto, foi realizado um estudo em que se empregou análise de correspondência para desenhar o mapa de percepções relativo a um conjunto pré-definido de atributos e hotéis. O mapa bidimensional indica prevalência dos atributos área de lazer e valor para a dimensão I e de um conjunto de atributos mais voltados para o segmento de negócios no caso da dimensão II, onde localização e restaurante são destaques positivos e qualidade do quarto e limpeza têm relevo negativo. O Othon Palace enfatiza os dois segmentos (as duas dimensões). O hotel Pestana Rio Atlântica prioriza o turismo lazer, enquanto que os outros oito hotéis pesquisados estão mais concentrados em torno da origem (coordenadas normalizadas com valor absoluto inferior a 0,4), o que caracteriza um posicionamento estratégico ambíguo, buscando privilegiar tanto o turismo de negócios quanto o de lazer.
The hotel industry has been developing significantly in the last years, driven by large public and private investments in the tourism and infrastructure sectors. Said industry is entirely related to the demand of tourism activity and is inserted in the service sector. Additionally, it is made up of a variable of good and services, which requires the understanding of the needs and wants of its clients in order to adopt the adequate strategies. Such a market is particularly sensitive to the quality of services rendered as well as to products offered to guests. Therefore, customer satisfaction is one of the main objectives of the sector that strives to create value for its clients by anticipating and managing their expectations, be them in the leisure or business tourism segments. In this research some attributes considered to be essential to the services of the hotel industry were used with the purpose of understanding how the market perceives a group of hotels located in the City of Rio de Janeiro. To this effect, a study was done in which correspondence analysis was implemented to conceptualize the perceptions map concerning a group of predefined attributes and hotels. The bi-dimensional map indicates mostly leisure attributes and value to the Dimension I and a group of attributes pertaining to the business segment in the Dimension II, where location and restaurant stand out as positive factors and room quality and cleanliness have a negative relevance. Othon Palace hotel emphasizes the two segments (the two dimensions). Pestana Rio Atlântica hotel prioritizes leisure tourism, while the other eight hotels that were analyzed are more concentrated due to their origin (normalized coordinates with an absolute value inferior to 0.4), which characterizes an ambiguous strategic positioning, striving to excel both in leisure and business tourism.
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Wang, Mike M. Eng Massachusetts Institute of Technology. "Product perceptual mapping on fashion designs with Gaussian mixture variational autoencoder and triplet loss". Thesis, Massachusetts Institute of Technology, 2018. https://hdl.handle.net/1721.1/121642.

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This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
Thesis: M. Eng., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2018
Cataloged from student-submitted PDF version of thesis.
Includes bibliographical references (pages 51-53).
Product perceptual maps are visualizations of the perceptions of products by customers. They provide many advantages to businesses, such as identifying gaps in the market, understanding competition, and finding how new products fit into a market. Conventional product perceptual mapping methods exhibit limitations, particularly in capturing the highly nonlinear structure in product perceptual categories. Therefore, given only a set of images and triplet data representing product co-occurence by consumers, we propose and use a Gaussian mixture variational autoencoder (GMVAE) with triplet loss to create product embeddings. These product embeddings are then flattened into a 2D perceptual map able to be interpreted by human judgment. We test the GMVAE approach on three datasets: (1) a dataset of simple generated data; (2) the MNIST dataset, a dataset of handwritten digits; and (3) the Amazon Fashion dataset, a dataset of product images, product categories, and similar products. The GMVAE method is quantitatively evaluated on its ability to capture product "latent" categories, and qualitatively evaluated on the quality of its 2D perceptual maps compared with those produced by using a conventional perceptual mapping method. We find that across the experiments, the GMVAE method could reasonable capture "latent" perceptual product categories and is more effective than the conventional perceptual mapping baseline in correctly identifying and predicting latent product categories.
by Mike Wang.
M. Eng.
M.Eng. Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science
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4

Gerrett, Nicola. "Body mapping of perceptual responses to sweat and warm stimuli and their relation to physiological parameters". Thesis, Loughborough University, 2012. https://dspace.lboro.ac.uk/2134/11000.

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Regional differences in sweat gland output, skin temperature and thermoreceptor distribution can account for variations in regional perceptions of temperature, thermal comfort and wetness sensation. Large cohorts of studies have assessed these perceptual responses during sedentary activity but the findings are typically applied to a multitude of conditions, including exercise. Increases in sweat gland output, redistribution of blood flow and changes in skin and core temperature are basic responses to exercise in most conditions and these ultimately influence our perceptual responses. The primary aim of this thesis is to determine factors that influence regional differences in thermal sensation, thermal comfort and wetness sensation during exercise in moderate to hot conditions. The secondary aim is to develop and understand an additional variable, galvanic skin conductance (GSC) that can be used to predict thermal comfort and wetness sensation. The aim of the first study (Chapter 4) was to determine the influence of exercise on thermal sensitivity and magnitude sensation of warmth to a hot-dry stimulus (thermal probe at 40°C) and assess if any gender-linked differences and/or regional differences exist. From the data, body maps indicating sensitivity were produced for both genders during rest and exercise. Females had more regional differences than males. Overall sensitivity was greatest at the head, then the torso and declined towards the extremities. The data showed that exercise did not cause a significant reduction in thermal sensitivity but magnitude estimation was significantly lower after exercise for males and selected locations in females. The cause of a reduced magnitude sensation is thought to be associated with exercise induced analgesia; a reduction in sensitivity due to exercise related increases in circulating hormones. As the literature suggests that thermal comfort in the heat is influenced by the presence of sweat, the next study and all proceeding studies were concerned with this concept. In Chapter 5, building on earlier studies performed in our laboratories, the influence of local skin wettedness (wlocal) on local thermal comfort and wetness sensation was investigated in a neutral dry condition (20.2 ± 0.5°C and 43.5 ± 4.5% RH) whilst walking (4.5 km∙hr-1). Regional differences in wlocal were manipulated using specialised clothing comprising permeable and impermeable material areas. Strong correlations existed between local thermal comfort and local wetness sensation with the various measured wlocal (r2>0.88, p<0.05 and r2>0.83, p<0.05, respectively). The thermal comfort limit was defined as the wlocal value at which the participants no longer felt comfortable. Regional comfort limits for wlocal were identified (in order of high-low sensitivity); lower back (0.40), upper legs (0.44), lower legs (0.45), abdomen (0.45), chest (0.55), upper back (0.56), upper arms (0.57) and lower arms (0.65). The maximum degree of discomfort and wetness sensation experienced during the investigation was kept deliberately low in an attempt to determine the threshold values. Therefore comfort scores and wetness scores rarely reached a state of uncomfortable or wet so the next step was to assess these relationships when sweat production is high and the sensations worsened. However, pilot testing indicated that a ceiling effect would occur for wlocal at high levels of sweat production whilst thermal discomfort increased indicating wlocal was not the determining parameter in that case. Thus an additional parameter was required. The chosen parameter was galvanic skin conductance (GSC) due to its alleged ability to monitor pre-secretory sweat gland activity, skin hydration and surface sweat. In Chapter 6, the reliability, reproducibility and validity of GSC were confirmed in a series of pilot tests. Moderate to strong correlations were found between GSC and regional sweat rate (RSR) (r2>0.60, p<0.05) and wlocal (r2>0.55, p<0.05). The literature suggests standardising GSC relative to a minimum and maximum GSC value; however uncertainties arise when attempting to achieve maximum GSC. Therefore a change from baseline (∆GSC) was chosen as the proposed method of standardisation for further use. Additional results (from Chapter 9) revealed that ∆GSC also reflects pre-secretory sweat gland activity as it increased prior to sweat being present on the skin surface and prior to an increase in RSR. In Chapter 9, also hydration of the stratum corneum was measured using a moisture meter and the results revealed that it has an upper limit; indicating maximal hydration. From this point of full skin saturation ∆GSC and RSR markedly increase though sensations did not. It was also found that ∆GSC is only influenced by surface sweat that is in direct contact with the electrode and is not influenced by sweat elsewhere on the skin surface between electrodes. Higher levels of thermal discomfort have rarely been explored and neither has its relationship with wlocal. The ability of ∆GSC and wlocal to predict local thermal comfort and wetness sensation were compared in two different conditions to elicit low and high sweat production. Unlike Chapter 5, the body sites were not manipulated to control wlocal but allowed to vary naturally over time. The test was carried out on males (Chapter 7) and females (Chapter 8) to compare any gender linked differences and the results suggest that females are more sensitive than males to the initial presence of sweat. For both genders, wlocal and ∆GSC are strong predictors of thermal comfort and wetness sensation. More importantly, wlocal can only be used to predict local thermal comfort in conditions of low sweat production or low levels of thermal discomfort. However, once sweat production increases and thermal discomfort worsens ΔGSC (and not wlocal) can predict thermal comfort. Due to low sweat production observed in females indicates that this is only relevant for females. It appears that epidermal hydration has an important role on influencing thermal comfort. Receptors influencing our perceptual responses are located in the epidermis and when sweat is produced and released onto the skin surface, this epidermis swells and the sensitivity of receptors are said to increase. wlocal indicates the amount of moisture present on the skin surface, yet ∆GSC indicates presecretory sweat gland activity and epidermal hydration where the receptors are located. This may explain why on numerous occasions thermal comfort had a stronger relationship with ∆GSC than wlocal. Where Chapter 5 indicated the true local comfort limits for each respective zone, Chapter 7 and 8 provided a global picture of how local regions interact and influence local thermal comfort across the body. When wlocal varies naturally, the torso areas naturally produce more sweat than the extremities and it seemed that these areas produce so much more sweat than the extremities that they dominate local thermal comfort across the whole body. This is referred to in this thesis as a model of segmental interaction. As with thermal comfort, wetness sensation had strong relationships with wlocal and ∆GSC. The results also revealed a strong relationship between wetness sensation and thermal comfort. In contrast to the widely supported claim, a drop in skin temperature is not required to stimulate a wetness sensation. The point at which we detect sweat and when it becomes uncomfortable occurs at different wlocal values across the body. Thermal comfort is shown to be influenced by sweat during exercise in moderate-to-hot conditions. As w has an upper limit the findings suggest that it cannot predict thermal comfort during high sweat rates. Galvanic skin conductance monitors the process of sweat production more closely and thus is a better predictor of thermal comfort during all conditions and particularly during high sweat production. The strong relationship between thermal comfort and wetness sensation confirm the role of sweat production on thermal comfort. Gender differences to perceptual responses were observed, with females generally being more sensitive to sweat and a warm thermal stimulus than males. Regional differences to sweat and a warm stimulus generally suggest that the torso area is more sensitive than the extremities. This is important not only for sports clothing design but also protective clothing at the work place.
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5

Jeon, Lisa. "Drawing Boundaries and Revealing Language Attitudes: Mapping Perceptions of Dialects in Korea". Thesis, University of North Texas, 2013. https://digital.library.unt.edu/ark:/67531/metadc271835/.

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Perceptual dialectology studies have shown that people have strong opinions about the number and placement of dialect regions. There has been relatively little research conducted in this area on Korean, however, with early studies using only short language attitude surveys. To address this gap in research, in the present study, I use the 'draw-­?a-­?map' task to examine perceptions of language variation in Korea. I ask respondents to draw a line around places in Korea where people speak differently and provide names, examples, and comments about the language spoken in those areas. With the resulting data, I use ArcGIS 10.0 software to quantitatively identify, aggregate, and map the most salient dialect areas and categories for subjects' perceptions. I also perform a content analysis of the qualitative data provided by respondents using 'keywords.' During this process, I categorize comments and labels given by respondents to find emerging themes. Finally, I stratify perceptions of respondents by demographic factors, e.g., age, sex, and urbanicity, that have often been found to be important in language variation and change. An analysis of these data suggests that Koreans' perceptions of dialect regions are not necessarily limited by administrative boundaries. In fact, the data reveal not only perceptions of dialect variation unassociated with geographic borders, but they also tap into the way people connect ideas about language and place. Results from this study have implications for language attitudes research, perceptual dialectology methodology, and the relationship between language and place in Korea.
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Holt, Jerred Charles. "Emergent Features and Perceptual Objects: A Reexamination of Fundamental Principles in Display Design". Wright State University / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=wright1386668979.

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Greener, Judith Robin. "Contralateral Prophylactic Mastectomy: An Exploratory Approach to Understanding the Decision Making Process". Diss., Temple University Libraries, 2015. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/354121.

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Public Health
Ph.D.
The rate at which women choose mastectomy has grown dramatically, and of particular note is the increase in contralateral prophylactic mastectomy (CPM). For women with no history of breast cancer or genetic risk, CPM represents a treatment decision that does not offer better long-term outcomes than the decision not to remove a healthy breast and may be associated with increased surgical risk and interventions, increased cost to the healthcare system, and potential adverse psycho-social outcomes. To better understand the decision making process regarding the election of CPM among women with early stage unilateral breast cancer, with no family history or genetic risk, a three-phase exploratory study was conducted. Qualitative in-depth interviews were conducted with healthcare providers who have close interaction with women during the decision making process (N=3) and patients who made a surgical decision about breast cancer treatment within the past three years (N=11). These two phases informed the design of the quantitative internet survey, conducted among women diagnosed with early stage breast cancer in the process of making a surgical decision (N=336). The survey design was also guided by an existing model for treatment decision making which uses a social ecological framework (Revenson & Pranikoff, 2005). In addition to descriptive analyses, perceptual mapping was utilized to understand patients’ conceptualizations of the relative importance of factors considered during the decision making process, and AdSAM® was used to gauge emotional response. Results suggest that women more likely to elect CPM demonstrate an emotional response to a generalized fear of cancer, along with the need to take control of their situation. In addition, retrospective interviews emphasized somewhat different reasons for electing CPM, highlighting the importance of prospective research in studying the decision making process.
Temple University--Theses
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Leung, Raymond Electrical Engineering &amp Telecommunications Faculty of Engineering UNSW. "Scalable video compression with optimized visual performance and random accessibility". Awarded by:University of New South Wales. Electrical Engineering and Telecommunications, 2006. http://handle.unsw.edu.au/1959.4/24192.

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This thesis is concerned with maximizing the coding efficiency, random accessibility and visual performance of scalable compressed video. The unifying theme behind this work is the use of finely embedded localized coding structures, which govern the extent to which these goals may be jointly achieved. The first part focuses on scalable volumetric image compression. We investigate 3D transform and coding techniques which exploit inter-slice statistical redundancies without compromising slice accessibility. Our study shows that the motion-compensated temporal discrete wavelet transform (MC-TDWT) practically achieves an upper bound to the compression efficiency of slice transforms. From a video coding perspective, we find that most of the coding gain is attributed to offsetting the learning penalty in adaptive arithmetic coding through 3D code-block extension, rather than inter-frame context modelling. The second aspect of this thesis examines random accessibility. Accessibility refers to the ease with which a region of interest is accessed (subband samples needed for reconstruction are retrieved) from a compressed video bitstream, subject to spatiotemporal code-block constraints. We investigate the fundamental implications of motion compensation for random access efficiency and the compression performance of scalable interactive video. We demonstrate that inclusion of motion compensation operators within the lifting steps of a temporal subband transform incurs a random access penalty which depends on the characteristics of the motion field. The final aspect of this thesis aims to minimize the perceptual impact of visible distortion in scalable reconstructed video. We present a visual optimization strategy based on distortion scaling which raises the distortion-length slope of perceptually significant samples. This alters the codestream embedding order during post-compression rate-distortion optimization, thus allowing visually sensitive sites to be encoded with higher fidelity at a given bit-rate. For visual sensitivity analysis, we propose a contrast perception model that incorporates an adaptive masking slope. This versatile feature provides a context which models perceptual significance. It enables scene structures that otherwise suffer significant degradation to be preserved at lower bit-rates. The novelty in our approach derives from a set of "perceptual mappings" which account for quantization noise shaping effects induced by motion-compensated temporal synthesis. The proposed technique reduces wavelet compression artefacts and improves the perceptual quality of video.
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Ruggieri, Dominique Grace. "An Investigation of Parents' Perceptions of BMI and BMI-for-age, School-Based BMI Screening Programs and BMI Report Cards: Using Framing Theory and Perceptual Mapping Methods to Develop a Tailored BMI Report Card for the School District of Philadelphia". Diss., Temple University Libraries, 2012. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/185961.

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Public Health
Ph.D.
School-based body mass index (BMI) screenings seek can improve parents' recall about their child's weight, increase concern about excess weight, and correct parents' misperceptions to help them make informed decisions about their child's health. However, schools have questioned parents' understanding of and attitudes about BMI, and have expressed concern about parents' reactions to BMI reports. Using a sample of school nurses (n=7) and parents/guardians (n=125) from the School District of Philadelphia (SDP), this research addressed these concerns by clarifying: 1) parents'/guardians' perceptions and knowledge about BMI; 2) the challenges schools face in communicating with parents/guardians; and 3) the messages that can be communicated to parents/guardians to help them understand their child's BMI-for-age category and why their child's BMI is measured in his/her school. The research used framing theory and perceptual mapping methods to study and improve communication about BMI to parents/guardians in the School District. The four-phase study design incorporated qualitative (focus groups and semi-structured in-depth interviews) and quantitative (cross-sectional survey) methods to assist in the development of an evidence-informed BMI report card template for the SDP. Messages were constructed to meet the needs of four distinct groups of parents/guardians that emerged from the factor and cluster analyses - "Passive Parents," "Neutral Parents," "Confident Advocates" and "Active Worriers." Although each cluster of parents/guardians had their own unique perceptions and varying degrees of assuredness and confidence related to BMI concepts, the majority of parents/guardians in this study shared common favorable perceptions about BMI measures, school-based screening programs and BMI report cards.
Temple University--Theses
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Zamir, Syed Waqas. "Perceptually-inspired gamut mapping for display and projection tecnologies". Doctoral thesis, Universitat Pompeu Fabra, 2017. http://hdl.handle.net/10803/404677.

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The cinema and television industries are continuously working in the development of image features that can provide a better visual experience to viewers; these image attributes include large spatial resolution, high temporal resolution (frame rate), greater contrast, and recently, with emerging display technologies, much wider color gamut. The gamut of a device is the set of colors that this device is capable of reproducing. Gamut Mapping Algorithms (GMAs) transform colors of the original content to the color palette of the display device with the simultaneous goals of (a) reproducing content accurately while preserving the artistic intent of the original content’s creator and (b) exploiting the full color rendering potential of the target display device. There are two types of gamut mapping: Gamut Reduction (GR) and Gamut Extension (GE). GR involves the transformation of colors from a larger source gamut to a smaller destination gamut. Whereas in GE, colors are mapped from a smaller source gamut to a larger destination gamut. In this thesis we propose three spatial Gamut Reduction Algorithms (GRAs) and four spatial Gamut Extension Algorithms (GEAs). These methods comply with some basic global and local perceptual properties of human vision, producing state of the art results that appear natural and are perceptually faithful to the original material. Moreover, we present a psychophysical evaluation of GEAs specifically for cinema using a digital cinema projector under cinematic (low ambient light) conditions; to the best of our knowledge this is the first evaluation of this kind reported in the literature. We also show how currently available image quality metrics, when applied to the gamut extension problem, provide results that do not correlate well with users’ choices.
Les indústries de cinema i televisió estan treballant contínuament en el desenvolupament de diferents característiques de la imatge que puguin proporcionar una millor experiència visual per als espectadors; aquests atributs d’imatge inclouen la resolució espacial, la resolució temporal (fotogrames per segon), major contrast i, recentment, amb les noves tecnologies de visualització emergents, una gamma de colors (gamut) molt més ampli. El gamut d’un dispositiu és el conjunt de colors que aquest dispositiu és capaç de reproduir. Els algoritmes de modificació de gamut (GMA, de les seves sigles en anglés) transformen els colors del contingut original a la paleta de color del dispositiu de visualització amb els objectius de (a) reproduir el contingut amb precisió preservant al mateix temps la intenció artística del creador del contingut original i (b) utilitzar tot el gamut de color del dispositiu de visualització. Hi ha dos tipus d’algoritmes de modificació de gamut: Reducció de Gamut (GR) i Extensió de Gamut (GE). GR implica la transformació dels colors d’un gamut d’origen més gran a un gamut de destinació més petit. Mentre que a GE, els colors s’assignen d’un gamut d’origen petit a un gamut de destinació més gran. En aquesta tesi es proposen tres algoritmes de Reducció de Gamut (GRAs) i quatre algoritmes d’extensió de Gamut (GEAs). Aquests mètodes compleixen amb algunes propietats perceptives globals i locals bàsiques de la visió humana, produint resultats que són estat de l’art, i que són naturals i perceptualment fidels al material original. D’altra banda, es presenta una avaluació psicofísica del problema d’extensió de Gamut específicament dissenyada per a cinema utilitzant un projector de cinema digital en condicions cinemàtiques (baixa llum ambiental); aquest estudi creiem que és el primer del seu tipus a la literatura. També mostrem com les mètriques de qualitat d’imatge disponibles actualment proporcionen resultats que no es correlacionen bé amb l’elecció dels usuaris quan s’apliquen al problema d’Extensió de Gamut.
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Libros sobre el tema "Perceptual mapping"

1

Jabri, Muayyad M. Mapping and analysis of perceptual patterns in climate research. Manchester: Manchester Business School, 1988.

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Sawtooth Software Conference (1987 Sun Valley, Idaho). Proceedings of the Sawtooth Software Conference on perceptual mapping, conjointanalysis, and computer interviewing. [s.l.]: [s.n.], 1987.

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Sawtooth Software Conference on Perceptual Mapping, Conjoint Analysis, and Computer Interviewing (1987 Sun Valley, Idaho). Proceedingsof the Sawtooth Software Conference on Perceptual Mapping, Conjoint Analysis, and Computer Interviewing. (Ketchum): (Sawtooth Software), 1987.

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Guillot, Aymeric. The neurophysiological foundations of mental and motor imagery. Oxford: Oxford University Press, 2010.

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Spatial processing in navigation, imagery, and perception. New York: Springer, 2007.

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Mast, Fred y Lutz Jäncke. Spatial processing in navigation, imagery, and perception. New York: Springer, 2007.

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Franco, Anthony. Market segmentation and the application of perceptual mapping. Bradford, 1985.

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M, Edelman Gerald, Gall W. Einar, Cowan W. Maxwell y Neurosciences Institute (New York, N.Y.), eds. Signal and sense: Local and global order in perceptual maps. New York: Wiley-Liss, 1990.

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Proceedings of the Sawtooth Software Conference on Perceptual Mapping, Conjoint Analysis, and Computer Interviewing, 1987. Sawtooth Pub, 1987.

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Choo, Chee Kong. Positioning strategies in the U.K. mail order industry: An appraisal via perceptual mapping of the current product positioning strategies... Littlewoods, Empire Stores, Freemans and Grattans. Bradford, 1985.

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Capítulos de libros sobre el tema "Perceptual mapping"

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Manrai, Ajay y Lalita Manrai. "Mapping, perceptual". En Encyclopedia of Tourism, 1–2. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-01669-6_143-1.

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Manrai, Ajay y Lalita Manrai. "Mapping, perceptual". En Encyclopedia of Tourism, 583–84. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-01384-8_143.

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Long, Daniel. "Mapping Nonlinguists’ Evaluations of Japanese Language Variation". En Handbook of Perceptual Dialectology, 199–226. Amsterdam: John Benjamins Publishing Company, 1999. http://dx.doi.org/10.1075/z.hpd1.22lon.

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Wilcox, Sherman. "11. The iconic mapping of space and time in signed languages". En Unfolding Perceptual Continua, 255–81. Amsterdam: John Benjamins Publishing Company, 2002. http://dx.doi.org/10.1075/aicr.41.12wil.

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Payne, Janet S. y John Stonham. "Mapping Perceptual Texture Similarity for Image Retrieval". En Image Analysis, 960–69. Berlin, Heidelberg: Springer Berlin Heidelberg, 2005. http://dx.doi.org/10.1007/11499145_97.

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Hossain, Md Zulfikar, Wai Yeap y Olaf Diegel. "Testing a Theory of Perceptual Mapping Using Robots". En Advances in Artificial Intelligence, 407–14. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-25324-9_35.

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Hackett, Paul M. W. "A Mapping Sentence Account of Non-traditional Three-Dimensional Art". En The Perceptual Structure of Three-Dimensional Art, 45–52. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-48452-5_3.

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Lababidi, Zafer y Hanyong Park. "Chapter 4. Perceptual mapping between Arabic and English consonants". En Perspectives on Arabic Linguistics XXIX, 89–126. Amsterdam: John Benjamins Publishing Company, 2017. http://dx.doi.org/10.1075/sal.5.05lab.

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Yeap, Wai Kiang, M. Zulfikar Hossain y Thomas Brunner. "On the Implementation of a Theory of Perceptual Mapping". En AI 2011: Advances in Artificial Intelligence, 739–48. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-25832-9_75.

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Safuanova, Olga V. y Nina N. Korzh. "Russian color names: Mapping into a perceptual color space". En Anthropology of Color, 55–74. Amsterdam: John Benjamins Publishing Company, 2007. http://dx.doi.org/10.1075/z.137.06saf.

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Actas de conferencias sobre el tema "Perceptual mapping"

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Drago, Frédéric, William L. Martens, Karol Myszkowski y Hans-Peter Seidel. "Perceptual evaluation of tone mapping operators". En the SIGGRAPH 2003 conference. New York, New York, USA: ACM Press, 2003. http://dx.doi.org/10.1145/965400.965487.

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Yang, En-hui, Xiang Yu y Jin Meng. "Set mapping induced image perceptual similarity distance". En 2015 Information Theory and Applications Workshop (ITA). IEEE, 2015. http://dx.doi.org/10.1109/ita.2015.7308998.

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Krawczyk, Grzegorz, Karol Myszkowski y Hans-Peter Seidel. "Perceptual effects in real-time tone mapping". En the 21st spring conference. New York, New York, USA: ACM Press, 2005. http://dx.doi.org/10.1145/1090122.1090154.

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Persson, Andreas, Pedro Zuidberg Dos Martires, Luc de Raedt y Amy Loufti. "ProbAnch: a Modular Probabilistic Anchoring Framework". En Twenty-Ninth International Joint Conference on Artificial Intelligence and Seventeenth Pacific Rim International Conference on Artificial Intelligence {IJCAI-PRICAI-20}. California: International Joint Conferences on Artificial Intelligence Organization, 2020. http://dx.doi.org/10.24963/ijcai.2020/771.

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Modeling object representations derived from perceptual observations, in a way that is also semantically meaningful for humans as well as autonomous agents, is a prerequisite for joint human-agent understanding of the world. A practical approach that aims to model such representations is perceptual anchoring, which handles the problem of mapping sub-symbolic sensor data to symbols and maintains these mappings over time. In this paper, we present ProbAnch, a modular data-driven anchoring framework, whose implementation requires a variety of well-orchestrated components, including a probabilistic reasoning system.
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Robitza, Werner, Yohann Pitrey, Benjamin Kitzinger y Helmut Hlavacs. "The NappingPlayer - Projective Mapping Experiments on Android Tablets". En 4th International Workshop on Perceptual Quality of Systems (PQS 2013). ISCA: ISCA, 2013. http://dx.doi.org/10.21437/pqs.2013-15.

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Theoharatos, Christos, George Economou y Spiros Fotopoulos. "Semantic Mapping of Image Databases using Perceptual Similarity". En Eighth International Workshop on Image Analysis for Multimedia Interactive Services (WIAMIS '07). IEEE, 2007. http://dx.doi.org/10.1109/wiamis.2007.76.

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Ferradans, Sira, Marcelo Bertalmío, Edoardo Provenzi y Vicent Caselles. "A Multi-Modal Approach to Perceptual Tone Mapping". En 2009 Conference for Visual Media Production (CVMP). IEEE, 2009. http://dx.doi.org/10.1109/cvmp.2009.16.

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Green, Phil. "Gamut mapping for the Perceptual Reference Medium Gamut". En 2013 Colour and Visual Computing Symposium (CVCS). IEEE, 2013. http://dx.doi.org/10.1109/cvcs.2013.6626285.

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Wang, Wei, Li Liu, Canbin Hu, Yongmei Jiang y Gangyao Kuang. "Airport Detection in SAR Image Based on Perceptual Organization". En 2011 International Workshop on Multi-Platform/Multi-Sensor Remote Sensing and Mapping (M2RSM). IEEE, 2011. http://dx.doi.org/10.1109/m2rsm.2011.5697415.

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Sarfraz, M. Saquib y Rainer Stiefelhagen. "Deep Perceptual Mapping for Thermal to Visible Face Recogntion". En British Machine Vision Conference 2015. British Machine Vision Association, 2015. http://dx.doi.org/10.5244/c.29.9.

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Informes sobre el tema "Perceptual mapping"

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Hill, Jr, Han Randall W., van Lent Changhee y Michael. Applying Perceptually Driven Cognitive Mapping to Virtual Urban Environments. Fort Belvoir, VA: Defense Technical Information Center, enero de 2002. http://dx.doi.org/10.21236/ada460290.

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Mayas, Magda. Creating with timbre. Norges Musikkhøgskole, agosto de 2018. http://dx.doi.org/10.22501/nmh-ar.686088.

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Unfolding processes of timbre and memory in improvisational piano performance This exposition is an introduction to my research and practice as a pianist, in which I unfold processes of timbre and memory in improvised music from a performer’s perspective. Timbre is often understood as a purely sonic perceptual phenomenon. However, this is not in accordance with a site-specific improvisational practice with changing spatial circumstances impacting the listening experience, nor does it take into account the agency of the instrument and objects used or the performer’s movements and gestures. In my practice, I have found a concept as part of the creating process in improvised music which has compelling potential: Timbre orchestration. My research takes the many and complex aspects of a performance environment into account and offers an extended understanding of timbre, which embraces spatial, material and bodily aspects of sound in improvised music performance. The investigative projects described in this exposition offer a methodology to explore timbral improvisational processes integrated into my practice, which is further extended through collaborations with sound engineers, an instrument builder and a choreographer: -experiments in amplification and recording, resulting in Memory piece, a series of works for amplified piano and multichannel playback - Piano mapping, a performance approach, with a custom-built device for live spatialization as means to expand and deepen spatio-timbral relationships; - Accretion, a project with choreographer Toby Kassell for three grand pianos and a pianist, where gestural approaches are used to activate and compose timbre in space. Together, the projects explore memory as a structural, reflective and performative tool and the creation of performing and listening modes as integrated parts of timbre orchestration. Orchestration and choreography of timbre turn into an open and hybrid compositional approach, which can be applied to various contexts, engaging with dynamic relationships and re-configuring them.
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