Relevant bibliographies by topics / Images

Academic literature on the topic 'Images'

Author: Grafiati
Published: 4 June 2021
Last updated: 7 September 2024

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Journal articles on the topic "Images"

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Janagam, Raju, and K. Yakub Reddy. "Automatic Image Captions for Lightly Labelled Images." International Journal of Trend in Scientific Research and Development Volume-2, Issue-3 (April 30, 2018): 452–54. http://dx.doi.org/10.31142/ijtsrd10786.

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Silva, Adriano Alves da. "O TEMPO IMAGÉTICO: a condensação do tempo na imagem fotográfica e a eternidade cíclica na imagem fílmica." Revista Observatório 4, no. 1 (January 1, 2018): 879. http://dx.doi.org/10.20873/uft.2447-4266.2018v4n1p879.

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Os profissionais da comunicação buscam criar e midiatizar imagens dotadas de sentido. O conhecimento de saberes que permitem entender como são percebidas as imagens se colocam como uma importante ferramenta, tanto para a produção, quanto para a interpretação destas. Este estudo tem como premissa discutir, problematizar e realizar ensaio artístico autoral sobre a ideia de tempo-imagem, tanto na imagem estática, quanto fílmica, a luz dos conceitos apresentados por Jacques Aumont no livro “A Imagem”. PALAVRAS-CHAVE: Narrativas visuais; imagem-tempo; fotografia; cinema. ABSTRACT Communication professionals seek to create and mediaize meaningful images. The knowledge of knowledges that allow to understand how the images are perceived are placed as an important tool, both for the production, as for the interpretation of these. This study has the premise of discussing, problematizing and performing authorial essay on the idea of time-image, both in the static and filmic image, the light of the concepts presented by Jacques Aumont in the book "The Image". KEYWORDS: Visual narratives; image-time; photography; movie theater. RESUMEN Los profesionales de la comunicación buscan crear y midiatizar imágenes dotadas de sentido. El conocimiento de saberes que permiten entender cómo se perciben las imágenes se plantean como una importante herramienta, tanto para la producción, como para la interpretación de éstas. Este estudio tiene como premisa discutir, problematizar y realizar ensayo artístico autoral sobre la idea de tiempo-imagen, tanto en la imagen estática, cuanto fílmica, la luz de los conceptos presentados por Jacques Aumont en el libro "La Imagen". PALABRAS CLAVE: Narrativa visual; imagen-tiempo; fotografía; el cine.
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Prando, Felipe Cardoso de Mello. "PLAS AYITI (PROJETO NEON): UMA POLÍTICA DAS IMAGENS / Plas Ayiti (neon project): the politics of images." arte e ensaios 26, no. 40 (December 2, 2020): 93–105. http://dx.doi.org/10.37235/ae.n40.7.

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Este artigo analisa o trabalho Plas Ayiti (projeto neon) da artista brasileira Milla Jung com o propósito de investigar uma política das imagens. Em um mundo do excesso de informações na era midiática somos incitados a não ver nada que está debaixo dos nossos olhos. Entretanto, a imagens constituem e constituem-se de um campo de forças e relações de poder que produzem subjetividades e signos dos sistemas culturais. Plas Ayiti (projeto neon) propõe uma política das imagens não apenas pelo fato de captar um aspecto visível do mundo, mas por pensar a produção e a circulação de imagens dialéticas que produzem o dissenso e restituem um saber histórico no qual a imagem e o sujeito que a olha se constituem mutuamente.Palavras-chave: Política das imagens; Imagem e esfera pública; Imagem dialética; Plas Ayiti.AbstractThis article analyzes the work Plas Ayiti (neon project) by the Brazilian artist Milla Jung with the purpose of investigating a politics of the images. In a world of over-information in the media age we are urged not to see anything under our eyes. However, the images constitute and constitute a field of forces and relations of power that produce subjectivities and signs of cultural systems. Plas Ayiti (neon project) proposes a policy of images not only by capturing a visible aspect of the world, but by thinking the production and circulation of dialectical images that produce dissent and restore a historical knowledge in which the image and the subject which look at it constitute at each other.Keywords: The politics of images; Public sphere and image; Dialectical image; Plas Ayiti.
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D, Shahi. "Reversible Steganography for RGB Images Using Image Interpolation." Journal of Advanced Research in Dynamical and Control Systems 12, no. 3 (March 20, 2020): 41–49. http://dx.doi.org/10.5373/jardcs/v12i3/20201165.

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Rani, V. Amala, and Dr Lalithakumari S. "Efficient Hybrid Multimodal Image Fusion for Brain Images." Journal of Advanced Research in Dynamical and Control Systems 12, no. 8 (August 19, 2020): 116–23. http://dx.doi.org/10.5373/jardcs/v12i8/20202453.

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Vivekalakshmi, R., B. Yaalini, and S. Karthik Raja Ms Sruthi Anand. "Image Re-Ranking Modernistic Structure for Web Images." International Journal of Trend in Scientific Research and Development Volume-2, Issue-1 (December 31, 2017): 535–38. http://dx.doi.org/10.31142/ijtsrd7005.

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Nandeesh, M. D., and Dr M. Meenakshi. "Image Fusion Algorithms for Medical Images-A Comparison." Bonfring International Journal of Advances in Image Processing 5, no. 3 (July 31, 2015): 23–26. http://dx.doi.org/10.9756/bijaip.8051.

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Takahata, Tomoyuki. "Coaxiality Evaluation of Coaxial Imaging System with Concentric Silicon–Glass Hybrid Lens for Thermal and Color Imaging." Sensors 20, no. 20 (October 10, 2020): 5753. http://dx.doi.org/10.3390/s20205753.

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Thermal imaging is useful for tasks such as detecting the presence of humans and recognizing surrounding objects in the operation of several types of robots, including service robots and personal mobility robots, which assist humans. Because the number of pixels on a thermal imager is generally smaller than that on a color imager, thermal images are more useful when combined with color images, assuming that the correspondence between points in the images captured by the two sensors is known. In the literature, several types of coaxial imaging systems have been reported that can capture thermal and color images, simultaneously, from the same point of view with the same optical axis. Among them, a coaxial imaging system using a concentric silicon–glass hybrid lens was devised. Long-wavelength infrared and visible light was focused using the hybrid lens. The focused light was subsequently split using a silicon plate. Separate thermal and color images were then captured using thermal and color imagers, respectively. However, a coaxiality evaluation of the hybrid lens has not been shown. This report proposes an implementation and coaxiality evaluation for a compact coaxial imaging system incorporating the hybrid lens. The coaxiality of the system was experimentally demonstrated by estimating the intrinsic and extrinsic parameters of the thermal and color imagers and performing 2D mapping between the thermal images and color images.
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Badgainya, Shruti, Prof Pankaj Sahu, and Prof Vipul Awasthi. "Image Denoising by OWT for Gaussian Noise Corrupted Images." International Journal of Trend in Scientific Research and Development Volume-2, Issue-5 (August 31, 2018): 2477–84. http://dx.doi.org/10.31142/ijtsrd18337.

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Sravani, L., N. Rama Venkat Sai, K. Noomika, M. Upendra Kumar, and K. V. Adarsh. "Image Enhancement of Underwater Images using Deep Learning Techniques." International Journal of Research Publication and Reviews 4, no. 4 (April 3, 2023): 81–86. http://dx.doi.org/10.55248/gengpi.2023.4.4.34620.

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Dissertations / Theses on the topic "Images"

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Arias, Chipana Fredy Elmer 1979. "Uma proposta para um modelo de exibição de imagens em displays de dispositivos móveis baseado um método de atenção visual." [s.n.], 2014. http://repositorio.unicamp.br/jspui/handle/REPOSIP/260047.

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Orientador: Yuzo Iano
Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Elétrica e de Computação
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Resumo: A apresentação de imagens em telas de dispositivos móveis tem limitações que dependem da experiência do usuário. A adaptação de imagens é acondicionar o tamanho e à resolução para-se visualizar na tela do dispositivo. O uso de mecanismos de atenção visual permite reduzir esforços no processamento do estímulo visual do olho humano. Os modelos de atenção visual também ajudam a reduzir a complexidade computacional em aplicações de processamento de imagens. Propõe-se neste uma melhora ao um modelo de atenção visual para ser aplicado à adaptação de imagens em telas de dispositivos móveis
Abstract: The presentation of images on screens of mobile devices has limitations that depend on the user experience. The adaptation of images is pack the size and resolution to be visualized on the device screen. The use of a visual attention mechanism allows reducing efforts in processing the visual stimulus of the human eye. Models of visual attention also help to reduce the computational complexity of image processing applications. We propose an improvement to this model of visual attention to be applied to the adaptation of images on screens of mobile devices
Mestrado
Telecomunicações e Telemática
Mestre em Engenharia Elétrica
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Dalkvist, Mikael. "Image Completion Using Local Images." Thesis, Linköpings universitet, Informationskodning, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-70940.

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Image completion is a process of removing an area from a photograph and replacing it with suitable data. Earlier methods either search for this relevant data within the image itself, or extends the search to some form of additional data, usually some form of database. Methods that search for suitable data within the image itself has problems when no suitable data can be found in the image. Methods that extend their search has in earlier work either used some form of database with labeled images or a massive database with photos from the Internet. For the labels in a database to be useful they typically needs to be entered manually, which is a very time consuming process. Methods that uses databases with millions of images from the Internet has issues with copyrighted images, storage of the photographs and computation time. This work shows that a small database of the user’s own private, or professional, photos can be used to improve the quality of image completions. A photographer today typically take many similar photographs on similar scenes during a photo session. Therefore a smaller number of images are needed to find images that are visually and structurally similar, than when random images downloaded from the internet are used. Thus, this approach gains most of the advantages of using additional data for the image completions, while at the same time minimizing the disadvantages. It gains a better ability to find suitable data without having to process millions of irrelevant photos.
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Murphy, Brian P. "Image processing techniques for acoustic images." Thesis, Monterey, California. Naval Postgraduate School, 1991. http://hdl.handle.net/10945/26585.

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The primary goal of this research is to test the effectiveness of various image processing techniques applied to acoustic images generated in MATLAB. The simulated acoustic images have the same characteristics as those generated by a computer model of a high resolution imaging sonar. Edge Detection and Segmentation are the two image processing techniques discussed in this study. The two methods tested are a modified version of the Kalman filtering and median filtering
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Zeng, Ziming. "Medical image segmentation on multimodality images." Thesis, Aberystwyth University, 2013. http://hdl.handle.net/2160/17cd13c2-067c-451b-8217-70947f89164e.

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Segmentation is a hot issue in the domain of medical image analysis. It has a wide range of applications on medical research. A great many medical image segmentation algorithms have been proposed, and many good segmentation results were obtained. However, due to the noise, density inhomogenity, partial volume effects, and density overlap between normal and abnormal tissues in medical images, the segmentation accuracy and robustness of some state-of-the-art methods still have room for improvement. This thesis aims to deal with the above segmentation problems and improve the segmentation accuracy. This project investigated medical image segmentation methods across a range of modalities and clinical applications, covering magnetic resonance imaging (MRI) in brain tissue segmentation, MRI based multiple sclerosis (MS) lesions segmentation, histology based cell nuclei segmentation, and positron emission tomography (PET) based tumour detection. For the brain MRI tissue segmentation, a method based on mutual information was developed to estimate the number of brain tissue groups. Then a unsupervised segmentation method was proposed to segment the brain tissues. For the MS lesions segmentation, 2D/3D joint histogram modelling were proposed to model the grey level distribution of MS lesions in multimodality MRI. For the PET segmentation of the head and neck tumours, two hierarchical methods based on improved active contour/surface modelling were proposed to segment the tumours in PET volumes. For the histology based cell nuclei segmentation, a novel unsupervised segmentation based on adaptive active contour modelling driven by morphology initialization was proposed to segment the cell nuclei. Then the segmentation results were further processed for subtypes classification. Among these segmentation approaches, a number of techniques (such as modified bias field fuzzy c-means clustering, multiimage spatially joint histogram representation, and convex optimisation of deformable model, etc.) were developed to deal with the key problems in medical image segmentation. Experiments show that the novel methods in this thesis have great potential for various image segmentation scenarios and can obtain more accurate and robust segmentation results than some state-of-the-art methods.
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Barros, Erna Raisa Lima Rodrigues de. "Os muros também falam : grafite: as ruas como lugares de representação." [s.n.], 2012. http://repositorio.unicamp.br/jspui/handle/REPOSIP/284590.

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Orientador: Etienne Ghislain Samain
Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Artes
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Resumo: Nossa pesquisa se constitui em uma tentativa de aproximação com o universo do grafite e aborda alguns aspectos de sua linguagem enquanto prática transgressora, arte contestatória, subversiva, mas também enquanto forma de expressão e representação artística que tem a capacidade de informar, carregar idéias e também de ser apresentado como veículo de expressão lúdica e poética presente nas cidades. Propomo-nos a refletir representações e intervenções estéticas que se referem a temáticas e questionamentos singulares com os quais nos munimos para pensar o papel das imagens na contemporaneidade, e o mundo através da arte
Abstract: Our research is an attempt to approach the world of graffiti and some aspects of their language as a practice transgressive, contestatory, subversive art, but also as a form of artistic expression and representation that has the ability to inform, carrying ideas and also to be presented as a means of ludic and poetic expression present in the cities. We propose to reflect representations and aesthetic interventions that relate to issue and questions with which we equip us to think the role of images in contemporary society and the world through art
Mestrado
Multimeios
Mestre em Multimeios
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Sousa, Ramayana Lira de. "Violent imagens and the images of violence." reponame:Repositório Institucional da UFSC, 2012. http://repositorio.ufsc.br/xmlui/handle/123456789/93075.

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Tese (doutorado) - Universidade Federal de Santa Catarina, Centro de Comunicação e Expressão, Programa de Pós-Graduação em Letras/Inglês e Literatura Correspondente, Florianópolis, 2009
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This dissertation proposes study of contemporary Brazilian films focusing on the portrayal of violence in urban spaces in a number of films set in different cities, namely Estorvo, Cidade de Deus, Carandiru, O Invasor, Amarelo Manga, Cidade Baixa and Tropa de Elite. The problem to be discussed in these films concerns the possibility of understanding violence as a political force that destabilizes notions such as unified self, representation, agency, nationality and class. The films analyzed suggest a tension between images of violence, mimetic, coagulated, normalized violence, and violent images, violence as dissemination, irradiation, fragmentation, explosion. Following the recent theorizations about biopolitics and community (which include the thought of Giorgio Agamben, Roberto Esposito, Jean-Luc Nancy and Jacques Rancière), this work explores how this tension suggests a (re)configuration of ways of living together.
Esta tese propõe um estudo de filmes brasileiros contemporâneos, com ênfase na apresentação da violência e sua relação com o espaço urbano representado, em uma série de obras que se passam em diferentes cidades, a saber, Estorvo, Cidade de Deus, Carandiru, O Invasor, Amarelo Manga, que se passam em diferentes cidades Cidade Baixa e Tropa de Elite. O problema a ser discutido diz respeito à possibilidade de entender a violência como uma força política capaz de desestabilizar noções como self, representação, agência, nacionalidade e classe. Os filmes analisados sugerem uma tensão entre imagens da violência, violência mimética, coagulada, normalizadas, e imagens violentas, violência como disseminação, irradiação, fragmentação, explosão. Tendo como base teorizações recentes sobre biopolítica e comunidade (incluindo o pensamento de Giorgio Agamben, Roberto Esposito, Jean-Luc Nancy e Jacques Rancière), este trabalho explora como essa tensão sugere uma (re)configuração do modos de viver junto.
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Karelid, Mikael. "Image Enhancement over a Sequence of Images." Thesis, Linköping University, Department of Electrical Engineering, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-12523.

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This Master Thesis has been conducted at the National Laboratory of Forensic Science (SKL) in Linköping. When images that are to be analyzed at SKL, presenting an interesting object, are of bad quality there may be a need to enhance them. If several images with the object are available, the total amount of information can be used in order to estimate one single enhanced image. A program to do this has been developed by studying methods for image registration and high resolution image estimation. Tests of important parts of the procedure have been conducted. The final results are satisfying and the key to a good high resolution image seems to be the precision of the image registration. Improvements of this part may lead to even better results. More suggestions for further improvementshave been proposed.


Detta examensarbete har utförts på uppdrag av Statens Kriminaltekniska Laboratorium (SKL) i Linköping. Då bilder av ett intressant objekt som ska analyseras på SKL ibland är av dålig kvalitet finns det behov av att förbättra dessa. Om ett flertal bilder på objektet finns tillgängliga kan den totala informationen fråndessa användas för att skatta en enda förbättrad bild. Ett program för att göra detta har utvecklats genom studier av metoder för bildregistrering och skapande av högupplöst bild. Tester av viktiga delar i proceduren har genomförts. De slutgiltiga resultaten är goda och nyckeln till en bra högupplöst bild verkar ligga i precisionen för bildregistreringen. Genom att förbättra denna del kan troligtvis ännu bättre resultat fås. Även andra förslag till förbättringar har lagts fram.

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Moëll, Mattias. "Digital image analysis for wood fiber images /." Uppsala : Swedish Univ. of Agricultural Sciences (Sveriges lantbruksuniv.), 2001. http://epsilon.slu.se/avh/2001/91-576-6309-2.pdf.

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Ahmad, Fauzi Mohammad Faizal. "Content-based image retrieval of museum images." Thesis, University of Southampton, 2004. https://eprints.soton.ac.uk/261546/.

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Content-based image retrieval (CBIR) is becoming more and more important with the advance of multimedia and imaging technology. Among many retrieval features associated with CBIR, texture retrieval is one of the most difficult. This is mainly because no satisfactory quantitative definition of texture exists at this time, and also because of the complex nature of the texture itself. Another difficult problem in CBIR is query by low-quality images, which means attempts to retrieve images using a poor quality image as a query. Not many content-based retrieval systems have addressed the problem of query by low-quality images. Wavelet analysis is a relatively new and promising tool for signal and image analysis. Its time-scale representation provides both spatial and frequency information, thus giving extra information compared to other image representation schemes. This research aims to address some of the problems of query by texture and query by low quality images by exploiting all the advantages that wavelet analysis has to offer, particularly in the context of museum image collections. A novel query by low-quality images algorithm is presented as a solution to the problem of poor retrieval performance using conventional methods. In the query by texture problem, this thesis provides a comprehensive evaluation on wavelet-based texture method as well as comparison with other techniques. A novel automatic texture segmentation algorithm and an improved block oriented decomposition is proposed for use in query by texture. Finally all the proposed techniques are integrated in a content-based image retrieval application for museum image collections.
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MAURY, ARNAUD. "Qualite image et rectification des images meteosat." Nice, 1993. http://www.theses.fr/1993NICE4654.

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Cette these traite de la rectification des images du satellite meteosat ; soit la methode d'allouer a chaque pixel de l'image sa localisation geographique. Meteosat est un satellite meteorologique geostationnaire manoeuvre par l'agence spatiale europeenne. Dans sa configuration nominale, le satellite meteosat permet la saisie d'images pour lesquelles les lignes sont orientees parfaitement en est-ouest et avec la terre parfaitement centree. De petites deviations de cette situation nominale induisent l'apparition de distorsions geometriques. L'ensemble des causes de ces distorsions sont decrites et definies. Afin de rectifier les images un modele de deformation est elabore, ses parametres etant estimes. Les images une fois rectifiees, l'erreur de rectification residuelle est quantifiee a partir de la localisation d'amers par un procede de correlation. L'ensemble des resultats et methodes ont ete valides a partir de donnees operationnelles au moyen de simulations informatiques; ce pour l'ensemble du processus de traitement image: des images brutes aux images rectifiees et re-echantillonnees
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Books on the topic "Images"

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de, Miranda Marco Antonio, ed. Terra América: Imagens = Images. Rio de Janeiro, RJ: Sextante Artes, 2003.

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1944-, Tschumi Bernard, Bernard Tschumi Architects, and Galerie d'architecture (Paris France), eds. Virtuæl: Expo 2004 image = images. [S.l.]: Bernard Tschumi Architects, 2003.

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aut, Tschumi Bernard, ed. Virtuael: Expo 2004 image = images. Paris: Bernard Tschumi Architectes, 2002.

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Vereniging van Edelsmeden en Sieraadontwerpers., ed. Jewellery images = Sieraden images = Schmuck images. Amsterdam: VES, 1986.

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Bianco-Levrin, Nicolas. Histoires en images. Images fixes / images animées. Noville-sur-Mehaigne: Esperluète Editions, 2014.

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Barboza, Pierre. Les nouvelles images. Paris: Editions d'art Somogy, 1997.

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Adriano, Rosa, ed. Imagens do Brasil =: Images of Brasil. Campinas, SP: Komedi, 2010.

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Donegan, Rosemary. Industrial images =: Images industrielles. Hamilton, Ont: Art Gallery of Hamilton, 1987.

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Soulages, François. Images serviles, images critiques. Paris: L'Harmattan, 2017.

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Depardon, Raymond. Images cachées: Hidden images. Grand Duchy of Luxembourg: Centre national de l'audiovisuel, 2007.

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Book chapters on the topic "Images"

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Wolff, Robert S., and Larry Yaeger. "Images and Image Processing." In Visualization of Natural Phenomena, 1–26. New York, NY: Springer US, 1993. http://dx.doi.org/10.1007/978-1-4684-0646-7_1.

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Corke, Peter. "Images and Image Processing." In Springer Tracts in Advanced Robotics, 359–411. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-54413-7_12.

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Elad, Michael. "Image Compression – Facial Images." In Sparse and Redundant Representations, 247–71. New York, NY: Springer New York, 2010. http://dx.doi.org/10.1007/978-1-4419-7011-4_13.

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Corke, Peter. "Images and Image Processing." In Robotic Vision, 103–55. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-79175-9_4.

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Corke, Peter, Witold Jachimczyk, and Remo Pillat. "Images and Image Processing." In Springer Tracts in Advanced Robotics, 435–91. Cham: Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-07262-8_11.

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Corke, Peter. "Images and Image Processing." In Springer Tracts in Advanced Robotics, 417–78. Cham: Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-06469-2_11.

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Pezzoli-Olgiati, Daria. "Images in Images." In Approaches to the Visual in Religion, 21–38. Göttingen: Vandenhoeck & Ruprecht, 2011. http://dx.doi.org/10.13109/9783666604423.21.

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Nakanishi, Tomoko M. "3D Images." In Novel Plant Imaging and Analysis, 191–96. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-33-4992-6_6.

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AbstractSpatial (3D) image construction from imaging plate (IP) images and the development of the microautography (MAR) method were presented. A rice grain was sliced every 5 μm, IP images were taken for successive slices, and the series of 2D images acquired by an IP were used to construct 3D images. In the case of 109Cd and 137Cs, the spatial distributions in the grain showed that the concentrations increased at the surface of the grain during the maturing process.
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Marjoribanks, Roger. "satellite images Satellite Imagery." In Geological Methods in Mineral Exploration and Mining, 137–42. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-540-74375-0_8.

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Daepp, Ulrich, and Pamela Gorkin. "Images and Inverse Images." In Reading, Writing, and Proving, 181–91. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-9479-0_17.

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Conference papers on the topic "Images"

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Manuaba, Ida Bagus Gede Hermawan, Mohammad Kadhem Aljishi, Nicklas Ritzmann, and Mohamed Gouda. "Advanced Corrections of LWD High-Resolution Resistivity Images in Hostile Downhole Environments." In International Petroleum Technology Conference. IPTC, 2024. http://dx.doi.org/10.2523/iptc-23991-ms.

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Abstract High-resolution resistivity images can be impacted negatively by several factors, especially in high-conductive water-based mud (WBM) systems. Additionally, borehole and drilling environmental parameters like elevated levels of drilling dynamics, multiple rotation regimes of the drill string, the logging while drilling (LWD) imager's eccentricity and excessive salinity are major factors, if uncontrolled while drilling, can result in severe image quality degradation. Even though such control is desired, it is not always possible. To overcome these conditions and their related artefacts, this article demonstrates a recently developed correction method to restore an acceptable definition of fine features from such heavily affected images. The implemented, multi-stage, correction methodology is based on the LWD raw image dataset and comprises a series of sequential corrections based on the examined environmental artefacts and their severities. The image correction is conducted in a strict order to take most effect. For full transparency of the correction, all intermediate steps are available for quality control purposes and enables the user to potentially improve certain correction steps if required. The final correction level is one image with the most detail restored possible, honoring the data contained in the raw dataset. This study focuses on the specific objective of identifying fine structural features in slim lateral boreholes, drilled through carbonate reservoirs under uncontrolled and unfavorable environmental challenges. These conditions are a challenge for high-resolution LWD resistivity imager data. The outcome of the correction methodology results in a remarkably sharper definition of fractures and faults (high-dip and high-contrast features) and reduction of the artefacts of LWD imager/string eccentricity effects. In addition, recovery of most of the lost information caused by severe drilling dynamics and associated image dataset spike artefacts. A comparison of structural features from the final corrected LWD image dataset to wireline (WL) imager was conducted and good repeatability was concluded between both different technologies with similar WBM salinity properties. The methodology enables the LWD WBM high-resolution resistivity imagers to deliver up to standard image quality in extreme downhole drilling and environmental conditions.
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Hou, Kejun, Zuoan Zhao, Gensheng Ni, Gamal Sultan, Bo Liu, and Tianhua Zhang. "Correlation of Borehole Images in Conductive and Non-Conductive Muds to Understand Carbonate Heterogeneity: Case Study from Sichuan Basin, China." In Middle East Oil, Gas and Geosciences Show. SPE, 2023. http://dx.doi.org/10.2118/213230-ms.

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Abstract The heterogeneous carbonate reservoir is the most important exploration target in Sichuan basin. It is challenging to identify the potential flow units in the tight carbonate reservoir. High-resolution borehole resistivity image can reveal the dissolution features such as vugs or fractures in the pay zone. Operators in Sichuan Basin have acquired lots of borehole resistivity image using water-based mud imager in key exploration wells to identify potential reservoir. The oil-based mud has become increasingly popular in exploration and development because it reduces complex drilling practices reducing drilling costs. The new generation oil-based imager is used in these new wells. The borehole resistivity image can be obtained from both OBM (oil base mud) imager and WBM (water base mud) imagers. It is important to understand the response differences through the comparisons between different borehole imaging technologies in the same wellbore. The objective of this study is to understand the responses and refine the rule of oil-based mud borehole image interpretation in tight carbonate reservoir. The operator has logged both WBM and OBM imager in the same wellbore at different times. The WBM resistivity image is acquired in water-base mud conditions in the beginning. Then drilling fluid system was changed to OBM, and 200 meters were drilled further in the borehole. Finally, the OBM imager was logged in the hole. A comparison between the WBM resistivity images and OBM resistivity images are carried out. Increased understandings of the image log responses in this vuggy or fractured carbonated reservoir were obtained. The borehole resistivity image from WBM and OBM imager is highly correlatable over most of the logging interval as they both show similar resistivity response (bright / dark) on both images for the same geologic feature. The new generation OBM resistivity imager is proven to have similar applications as the WBM resistivity could offer. In fact, the OBM borehole images has higher resolution than the WBM borehole image in most of the intervals, especially in high resistivity formations. It was found that the responses of vugs or fractures can be interpreted slightly different in some intervals. Only the unfilled vug will have resistive response in OBM image while it will be very conductive in the WBM image because it was invaded by the resistive or conductive mud. The responses of induced fractures or natural fractures will be slightly different, which is influenced by formation conditions such as Rt/Rm. The induced fracture could be conductive or resistive under different logging conditions. This case study improved the understandings of the OBM imager response in tight carbonate reservoirs. These observations can be used as a reference for borehole image interpretation in similar reservoirs.
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Vanderlinde, William E., and James N. Caron. "Blind Deconvolution of SEM Images." In ISTFA 2007. ASM International, 2007. http://dx.doi.org/10.31399/asm.cp.istfa2007p0097.

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Abstract Blind deconvolution techniques were used to enhance scanning electron microscope (SEM) images in the range of 200,000x to 500,000x magnification. Typical SEM samples were imaged including a gold island reference standard, a plasma delayered integrated circuit, and an integrated circuit cross section. Image resolution improvement up to 40% was observed. However, it was necessary to use 16-bit TIFF images with greater than 120:1 signal to noise ratio, which required 10 minute frame times.
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Domash, Lawrence, Vincent Ryan, and Parviz Tayebati. "Optical processing of fractal images." In OSA Annual Meeting. Washington, D.C.: Optica Publishing Group, 1992. http://dx.doi.org/10.1364/oam.1992.thqq3.

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Fractal textures occur in natural scenary or satellite images (clouds, ocean waves). However, processing of fractal image data to extract measurements such as fractal dimension is highly computation-intensive when serial digital methods are used. Massively parallel nonlinear optical processing methods are proposed to characterize fractal images in real time. A photorefractive real time image processor performing a combined convolution/correlation operation is used to measure the correlation dimension of sample fractal patterns. The optical algorithm employs an image autocorrelation performed simultaneously with an optical convolution by using a spatially multiplexed array of 9–100 discs of various radii setting a range of scales. A digital neural network in the correlation plane evaluates the maximum intensity in each light patch and computes the fractal dimension. By placing phase screens or window functions in the third port, additional fractal analyses may be accomplished, including iterated function system encoding. Double convolution involving two different images and a kernel provides scale sensitive image comparison, closely related to wavelet analysis. Real time nonlinear optical coprocessing appears useful in several different approaches to characterization of fractal imagery. Preliminary experimental results will be presented.
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Da Silveira, Thiago L. T., and Cláudio R. Jung. "Dense 3D Indoor Scene Reconstruction from Spherical Images." In Conference on Graphics, Patterns and Images. Sociedade Brasileira de Computação, 2020. http://dx.doi.org/10.5753/sibgrapi.est.2020.12977.

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Techniques for 3D reconstruction of scenes based on images are popular and support a number of secondary applications. Traditional approaches require several captures for covering whole environments due to the narrow field of view (FoV) of the pinhole-based/perspective cameras. This paper summarizes the main contributions of the homonym Ph.D. Thesis, which addresses the 3D scene reconstruction problem by considering omnidirectional (spherical or 360◦ ) cameras that present a 360◦ × 180◦ FoV. Although spherical imagery have the benefit of the full-FoV, they are also challenging due to the inherent distortions involved in the capture and representation of such images, which might compromise the use of many wellestablished algorithms for image processing and computer vision. The referred Ph.D. Thesis introduces novel methodologies for estimating dense depth maps from two or more uncalibrated and temporally unordered 360◦ images. It also presents a framework for inferring depth from a single spherical image. We validate our approaches using both synthetic data and computer-generated imagery, showing competitive results concerning other state-ofthe-art methods.
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Liu, Yi-Hwa, and Timothy J. Holmes. "Stereo images of fluorescence micrographs through maximum-likelihood estimation." In OSA Annual Meeting. Washington, D.C.: Optica Publishing Group, 1990. http://dx.doi.org/10.1364/oam.1990.tuoo3.

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The expectation-maximization (EM) algorithm based on maximum-likelihood estimation (MLE) has been used for restoring simulated quantum-limited noncoherent imagery in our previous work.1 Its performance in these computer simulations has motivated us to further test the algorithm on three-dimensional (3-D) real data. In recent experiments, we used an accelerative version of the EM algorithm for this testing.2 3-D optically sectioned images of a fluorescently labeled biological specimen were used in these experiments. These 3-D real data were collected as a stack of 32 128 × 128 images. To reduce the computer execution time and memory space, instead of reconstructing the full 3-D image, we reconstructed a pair of stereo images by applying the slice theorem of computerized tomography (CT). Fig. 1 shows the 17th slice out of the stack of the 32 collected images. This image contains both in focus and out of focus portions. A stereo pair reconstructed by MLE after 100 iterations is shown in Fig. 2.
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Chen, Yong-Hua, Richard Bloemenkamp, Peter Schlicht, Lin Liang, and Laetitia Comparon. "INVERSION-BASED MEASUREMENT INTERPRETATION OF A NEW THROUGH-THE-BIT OBM PHOTOREALISTIC BOREHOLE IMAGER." In 2021 SPWLA 62nd Annual Logging Symposium Online. Society of Petrophysicists and Well Log Analysts, 2021. http://dx.doi.org/10.30632/spwla-2021-0080.

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A new 2 1/8-in. outer-diameter photorealistic imager for oil-based muds (OBM) has recently started field testing in unconventional formations in North America. To obtain the best interpretation of its measurements, a two-step quantitative inversion workflow has been developed with a performance similar to the existing inversion workflows for the regular high-definition OBM imagers. The new inversion workflow provides borehole resistivity images, borehole rugosity images, and borehole dielectric permittivity images as well as multiple quality curves. The modeling of the new borehole imager is performed with a 2D axisymmetric finite element code. An efficient forward model is developed by fitting the tool response tables into fourth-order polynomials in terms of the sensor standoff, formation, and mud impedivities for broad ranges of model parameters. The fast forward model based on the polynomial fitting is calibrated against the actual tool measurements in a laboratory setup and applied in the inversion algorithms. The inversion workflow is tested with synthetic data and the inverted model parameters are compared with their true values to study and analyze their corresponding measurement sensitivity and optimize the inversion input parameters. It is used to invert several field test datasets in unconventional wells. The results show that the inversion results provide critical added value for formation evaluation, showing geological features that would otherwise be missed, such as fracture properties. Projection-based formation impedivity images, as available for the regular high-definition OBM imagers, are ideal for conductive formations but suffer from a rollover effect in resistive formations. In comparison, the image formed from the inverted formation resistivity does not roll over and is more consistent for resistive formations. The image formed by the inverted standoff reflects surface conditions of the borehole and can be used to interpret whether the fractures and the faults are open, closed, or damaged in the drilling process. Multiple image examples are given from unconventional wells to demonstrate that the inverted standoff image can reveal fractures when there is insufficient or even no contrast in medium properties. The inverted standoff image also serves as a diagnostic tool for interpreting borehole and tool conditions during the measurements. The inverted permittivity may have a larger dynamic range than the resistivity especially for unconventional formations, thus providing an alternative and potentially clearer borehole image.
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Lehn, Waldemar H., and R. Edgar Wallace. "Continuous-Tone Mirage Images computed from Digitised Source Photographs." In Meteorological Optics. Washington, D.C.: Optica Publishing Group, 1986. http://dx.doi.org/10.1364/mo.1986.thb4.

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The properties of mirage images corresponding to a given atmospheric model can be graphically summarised in two distinct ways: the image space1, and the transfer characteristic2. The former shows the apparent heights of surfaces of constant elevation, and is useful for estimating images of objects that possess considerable longitudinal extent, i.e. varying distance from the observer. The transfer characteristic is more convenient for objects concentrated near a single plane at a fixed distance from the observer. Detailed image construction, however, is laborious with both representations: typically, the points on a line drawing of the object are individually mapped into new apparent positions and joined by straight lines to create a line drawing of the image3. Entry of object data is slow; either individual x,y coordinates are entered by hand, or the object can be traced on a digitising tablet. Because the computed image is still only a line drawing, it is not entirely satisfactory. Certainly it is not convincingly realistic when compared with a direct photograph of a mirage.
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Goodman, Douglas S. "Images of pinholes and pinspots." In OSA Annual Meeting. Washington, D.C.: Optica Publishing Group, 1985. http://dx.doi.org/10.1364/oam.1985.wg1.

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Some aspects are considered of the images of isolated pinholes, small openings in an otherwise opaque field, and pinspots, small opacities in an otherwise clear field. Image formation is treated using scalar diffraction theory and the Kirchhoff approximation. The power in a pinhole image varies as the square of the area of the pinhole, while the power missing from a pinspot image varies as twice the area of the spot. Pinhole and pinspot images are not complementary. Pinspot images are much more sensitive to the size of the source, even for small spots. Computer imaging simulations show the variation of pinhole and pinspot images with their size and with the source.
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Peli, Eli. "Contrast in complex images." In OSA Annual Meeting. Washington, D.C.: Optica Publishing Group, 1988. http://dx.doi.org/10.1364/oam.1988.fd8.

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The contrast of test images such as sinusoidal gratings or a single patch of light on a uniformed background is well defined, but this is not the case for complex images. When the Michelson definition, used for sinusoidal test patterns, is applied to complex scenes the contrast of the whole picture may be defined based on only one point in the image. Human contrast sensitivity is known to be a function of the spatial frequency. Therefore, the spatial frequency content of an image should be included in the definition of contrast. We propose a definition of local bandlimited contrast in images which assigns a contrast value to every point in the image as a function of the spatial frequency band. The contrast is calculated for frequencies at one-octave intervals. For each frequency, the contrast is defined as the ratio of the bandpass filtered image at that frequency to the low-pass filtered image filtered to an octave below the same frequency.
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Reports on the topic "Images"

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Wendelberger, James G., Kimberly Ann Kaufeld, Elizabeth J. Kelly, Juan Duque, and John M. Berg. Automated Image Analysis for Screening LCM Images – Examples from 09DE2 Images. Office of Scientific and Technical Information (OSTI), February 2018. http://dx.doi.org/10.2172/1422981.

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Wendelberger, James G. Image Analysis of Stringer Area: Three Images. Office of Scientific and Technical Information (OSTI), August 2018. http://dx.doi.org/10.2172/1467243.

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Goforth, J., L. Gaines, W. White, and P. Pope. Benchmark Imagery Project Selection of Real World Images for Creating Composite Images of Facilities. Office of Scientific and Technical Information (OSTI), March 2013. http://dx.doi.org/10.2172/1077177.

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Thayer, Colette, and Laura Skufca. Media Image Landscape: Age Representation in Online Images. AARP Research, September 2019. http://dx.doi.org/10.26419/res.00339.001.

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Doerry, Armin, and Douglas Bickel. Synthetic Aperture Radar Image Geolocation Using Fiducial Images. Office of Scientific and Technical Information (OSTI), October 2022. http://dx.doi.org/10.2172/1890785.

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Marshak, Ronni. Getty Images. Boston, MA: Patricia Seybold Group, December 2005. http://dx.doi.org/10.1571/cs12-8-05cc.

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Self, Herschel C. Optical Displays: A Tutorial on Images and Image Formation. Fort Belvoir, VA: Defense Technical Information Center, October 1992. http://dx.doi.org/10.21236/ada266230.

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Bickel, V. T., B. Moseley, E. Hauber, M. Shirley, J. P. Williams, and D. A. Kring. CHARACTERIZATION OF SHADOWED REGIONS AT THE LUNAR SOUTH POLE. Frontier Development Lab, July 2022. http://dx.doi.org/10.56272/gqkz6227.

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This image repository contains a total of 576 non map-projected HORUS (Hyper-effective nOise Removal Unet Software) post-processed images of permanently shadowed regions (PSRs) located across the Artemis exploration zone at the lunar south pole (144 individual images).
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Greaves, C., and J. B. R. Eamer. Focus stacking for cataloguing, presentation, and identification of microfossils in marine sediments. Natural Resources Canada/CMSS/Information Management, 2023. http://dx.doi.org/10.4095/331355.

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Microfossils represent an important part of studying past depositional environments and determining ages for the strata they are found within. The key to ascribing paleoenvironmental interpretations to the sediments in which a microfossil is found is accurate identification of the microfossil. A number of techniques can be used to identify microfossils, including ones that use key features, morphologies, and characteristics from imagery acquired using a scanning electron microscope. A low-cost, efficient alternative method is digital photography of optical microscope images. This technical note presents a method for acquiring photos of microfossils and two methods for compiling them into high-resolution images using focus stacking. The process is described in four main steps: image acquisition, exportation, focus stacking, and annotation.
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Allard, Anthony, Edward Dugan, and Alan Jacobs. Image Processing Techniques for Lateral Migration Radiography Land Mine Images. Fort Belvoir, VA: Defense Technical Information Center, June 2000. http://dx.doi.org/10.21236/ada384546.

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