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Atasoy, Seda Nur. "Visual perception management in advertisements." New Trends and Issues Proceedings on Humanities and Social Sciences 2, no. 1 (February 19, 2016): 397–409. http://dx.doi.org/10.18844/gjhss.v2i1.324.
Albright, T. D., and G. R. Stoner. "Visual motion perception." Proceedings of the National Academy of Sciences 92, no. 7 (March 28, 1995): 2433–40. http://dx.doi.org/10.1073/pnas.92.7.2433.
Deplancke, Antoine. "Approche psychophysique des dissociations perception-action : effet de la détection de distracteurs au seuil sur l’atteinte de cibles visuelles." Thesis, Lille 3, 2012. http://www.theses.fr/2012LIL30033/document.
La théorie dominante suggérant une séparation entre une vision consciente pour la perception et une vision non consciente pour l'action au sein du système visuel fut particulièrement discutée au cours des dernières décennies. La thèse défendue ici se positionne dans le cadre d'une approche alternative reposant sur une évaluation conjointe des réponses motrice et perceptive en présence de stimuli au seuil perceptif. Les travaux réalisés dans ce contexte ont initialement porté sur les temps de réaction et ont contribué au développement d'un modèle psychophysique postulant que les réponses perceptives et motrices dépendraient d'un signal sensoriel unique mais de seuils de décision spécifiques. Les trois études réalisées au cours de cette thèse ont permis de tester ces propositions à partir de travaux portant sur le contrôle moteur manuel. Tout en confirmant une forte association entre les traitements visuels pour la perception et pour l'action, ces travaux ont permis de mettre en évidence un rôle important des conditions expérimentales (par exemple le contraste des stimuli et la présence ou non d'un masque visuel) dans les résultats obtenus. Les résultats se sont révélés compatibles avec les modèles neurophysiologiques du masquage visuel qui postulent que la réponse neurale à une stimulation visuelle est constituée d'une vague d'activation feedforward associée à la présence physique de la stimulation et de boucles de rétroaction liées à la perception consciente de celle-ci. Nos travaux ont également permis d'adapter au contrôle moteur manuel le modèle de décision à signal unique initialement développé dans le cadre des études portant sur les temps de réaction The dominant position of a separation between a conscious vision for perception and an unconscious vision for action within the visual system has been particularly discussed in the last decades. The present dissertation is to be placed in the context of an alternative approach consisting in evaluating jointly both perceptual and motor responses in the presence of near-treshold visual stimuli. Previous work within this framework, which have mainly concerned reaction times, have contributed to develop a psychophysical model in which perceptual and motor decision are taken relatively to the same single incoming signal but are based on different tresholds. The three studies conducting during this PhD aimed to testing these proposals in experiments involving manual motor control. While confirming the strong link between perceptual and motor processing within the visual system, the results obtained in these studies underlined the importance of experimental parameters such as the contrast of the stimuli and the presence of visual masks. These results are congruent with neurophysiological models of visual masking, which postulate that the neural response to a visual stimulus is composed of a transient feedforward sweep of activation related to the presence of as stimulus and recurrent feedback loops linked to the conscious perception of this stimulus. Our work also led to the adaptation to manual motor control of the single signal decisional model initially developed on the basis of reaction time studies
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Porporino, Mafalda. "Developmental differences in global and local perception : is global perception more attention demanding than local perception." Thesis, McGill University, 2000. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=30796.
The primary purpose of the present study was to examine various aspects of local and global perception in groups of children and young adults with average ages of 6, 8, 10, 12, and 22 years. The aspects examined included developmental differences in RT for local and global visual information, the influence of filtering on global and local perception, and role of distracter congruency and compatibility on processing local and global stimuli. At a general level, the findings revealed that participants processed global faster than local stimuli. With the presence of distracters, 6 and 8-year-old participants demonstrated slower RTs for global targets relative to local targets. Distracter congruency or compatibility did not differentially affect global and local processing. However, congruency did appear to be related to differential performance for 6-year old males versus females. These results indicate that the underlying processes involved in global and local perception may be separate, with global perception relying on attentional mechanisms to a greater extent than local perception.
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Shin, Myoung Ju. "Visual orienting and conscious perception." Thesis, University of Auckland, 2012. http://hdl.handle.net/2292/19397.
Much research supports the dichotomy model of visual covert orienting which suggests that attention shifting occurs either exogenously or endogenously. The present study attempts to suggest an alternative model that can accommodate evidence of endogenously cued orienting that may not necessarily involve consciousness. The first part of the present study (Experiment 1-3) examined whether or not the perceptual awareness of visual cue stimuli is essential in Posner���s cue-target orienting paradigm. Lowering the cue luminance had differential effects in orienting and cue identification tasks, in that the performance in the orienting task was relatively unimpaired in comparison with the performance in the cue identification task which was greatly affected by the decrease in the cue luminance. It was suggested that the orienting system uses the dorsal visual pathway, which is resilient to luminance decrease. In Experiment 4, a flicker adaptation procedure was included before the orienting task trials in order to over stimulate the M pathway which has been suggested to be important in luminance contrast processing and in orienting. The flicker adaptation affected the orienting process suggesting the involvement of the M pathway in the attentional mechanism, but contrary to hypothesis the effect was facilitatory rather than inhibitory. Lastly, the effects of the eccentricity (peripheral or central, Experiment 5), number (single or double, Experiment 5) and the size (big or small, Experiment 6) of visually symmetric cues on visual orienting were investigated. The results showed that neither the eccentricity nor the size of the cues interacted with cue validity. It was suggested that the attentional system first uses the spatial correspondence between cue and target in visual orienting. This hypothesis was further explained in terms of the visual orienting system exploiting both space-based and symbolic-meaning-based attention strategies depending on the efficiency of each strategy in a given task. The findings in the current study show evidence against the endogenous-exogenous dichotomy attentional model and suggest the necessity of an attentional model that accommodates a form of orienting that is neither purely exogenous nor purely endogenous.
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Michel, Rachel Keyes. "Visual perception, search, and attention." Thesis, Georgia Institute of Technology, 2001. http://hdl.handle.net/1853/29580.
Six experiments tested the assumption that, in visual perception, observers have reliable and direct access to the equivalence of shapes in projective geometry (I call this "the invariance hypothesis in the theory of shape constancy"). This assumption has been made in the study of vision since Helmholtz's time. Two experiments tested recognition of the projective equivalence of planar shapes. In another four experiments, subjects estimated the apparent shape of a solid object from different perspectives. Departure from projective equivalence was assessed in each study by measuring the cross ratio for the plane. This measure of projective invariance is new to perceptual research. Projective equivalence was not found to be perceived uniformly in any of the studies. A significant effect of change in perspective was found in each study. These results were construed as supporting the classical theory of depth cues against the invariance hypothesis.
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Chan, Y. M. "Depth perception in visual images." Thesis, University of Brighton, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.380238.
Sorensen, Robyn Elizabeth. "The perception of visual symmetry." Thesis, University of Cambridge, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.624479.
This thesis is concerned with the role of symmetry in low-level image segmentation. Early detection of local image properties that could indicate the presence of an object would be useful in segmentation, and it is proposed here that approximate bilateral symmetry, which is common to many natural and man made objects, is a candidate local property. To be useful in low-level image segmentation the representation of symmetry must be relatively robust to noise interference, and the symmetry must be detectable without prior knowledge of the location and orientation of the pattern axis. The experiments reported here investigated whether bilateral symmetry can be detected with and without knowledge of the axis of symmetry, in several different types of pattern. The pattern properties found to aid symmetry detection in random dot patterns were the presence of compound features, formed from locally dense clusters of dots, and contrast uniformity across the axis. In the second group of experiments, stimuli were designed to enhance the features found to be important for global symmetry detection. The pattern elements were enlarged, and grey level was varied between matched pairs, thereby making each pair distinctive. Symmetry detection was found to be robust to variation in the size of matched elements, but was disrupted by contrast variation within pairs. It was concluded that the global pattern structure is contained in the parallelism between extended, cross axis regions of uniform contrast. In the third group of experiments, detection performance was found to improve when the parallel structure was strengthened by the presence of matched strings, rather than pairs of elements. It is argued that elongation, parallelism, and approximate alignment between pattern constituents are visual properties that are both presegmentally detectable, and sufficient for the representation of global symmetric structure. A simple computational property of these patterns is described.
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RAHMAN, SHAHNUR. "Visual Perception in Autonomous Vehicles." Thesis, KTH, Hållbarhet och industriell dynamik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-189346.
The human factor accounts for nine out of ten out of all traffic accidents, and because more vehicles are being deployed on the roads, the number of accidents will increase. Because of this, various automated functions have been implemented in vehicles in order to minimize the human factor in driving. In recent year, this development has accelerated and vehicles able to perform the complete driving task without any human assistance have begun to emerge from different projects around the world. However, the autonomous vehicle still has many barriers to overcome before safe driving in traffic becomes a reality. One of these barriers is the difficulty to visually perceive the surrounding. This is partly because of the fact that something can cover the camera sensors, but it is also problematic to translate the perceived data, that the sensors are collecting, into something valuable for the passenger. The situation could be improved if wireless communications were available to the autonomous vehicle. Instead of trying to understand the surrounding by the use of camera sensors, the autonomous vehicle could obtain the necessary data via wireless communication, which was the subject of this study. The study showed that wireless communication will be significant for the autonomous vehicle in the future. The conclusion is based on the fact that wireless communication was a solution in other transport systems that have had the similar barrier as for the autonomous vehicle. There are also plans on managing the barrier via wireless communication in pilot projects related to autonomous vehicles. Den mänskliga faktorn står för nio av tio utav alla trafikolyckor, och eftersom att allt fler fordon kommer ut på vägarna så leder det till att olycksantalet ökar. På grund av detta så har olika automatiserade funktioner applicerats i fordonet för att undvika den mänskliga faktorn i körningen. Denna utveckling har accelererat och fordon som ska kunna utföra hela det dynamiska framförandet utan mänsklig assistans har börjat utvecklas i olika projekt runt om i världen. Dock så har det autonoma fordonet många barriärer kvar att övervinna, för säkert framförande, varav en av dessa barriärer är fordonets förmåga att visuellt uppfatta omgivningen. Dels genom att något kan täcka kamerasensorerna men även att kunna omsätta det sensorerna uppfattar till något värdefullt för passageraren. Situationen skulle dock kunna förbättras om trådlös kommunikation gjordes tillgänglig för det autonoma fordonet. Istället för att försöka uppfatta omgivningen via kamerasensorer, skulle det autonoma fordonet kunna få den information som behövs via trådlös kommunikation, vilket är vad denna studie behandlade. Studien visade att trådlös kommunikation kommer att ha en betydelse för det autonoma fordonet i framtiden. Slutsatsen grundar sig på att trådlös kommunikation varit en lösning inom andra transportsystem som haft en liknande barriär som för det autonoma fordonet. Man planerar dessutom på att hantera det autonoma fordonets barriär via trådlös kommunikation i pilotprojekt i dagsläget
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Genin, Terry. "Perception of the visual image." Thesis, University College London (University of London), 1987. http://discovery.ucl.ac.uk/10006547/.
Many scholars tacitly or overtly support the position that the image is becoming the primary means of communication. It is therefore necessary to become visually 'literate' which propensity, it seems, is (unlike 'numeracy' and 'articulacy/literacy') partially innate. During early maturation a complicated set of interactions occur between the physical and psychological aspects of the observer, forming the visually perceptive individual. It is proposed in this thesis that an image comes about as the result of technological, historical, geographic and social forces, an understanding of which, it is suggested, can contextualise the image and aid an understanding of its meaning. Problems seem to occur when fostering visual/spatial understanding through a linguistic medium. Visual/spatial memory is, it seems, capable of being trained, and through that training enhanced. A range of visual image forms can be listed which is shown to be growing while media continue to be developed which can record that range with increasing fidelity. These media appear to be moving towards a standard. This simultaneous growth and containment suggests that a taxonomy of visual images is both possible and educationally desirable. A syllabus is here put forward which consists of an interwoven structure, made up of a database comprising a chronological grouping of image categories, a set of skills and a teaching strategy. The outcomes are evaluated. It was found that the response of the pupils involved could be evaluated in terms of (a) a largely quantitative interpretation of meaning; and (b) a qualitative or critical, idiosyncratic understanding of meaning. It was observed that continuity and sequence were important factors in teaching the syllabus. Test results showed marked positive learning curves when the experimental group was tested against a control group. The a priori claim that si gnificant growth could be shown to occur in a group 's visual understanding of images if the y were sublected to a period of sustained teachin g was substantiated, with the caveat that continuity and sequence needed more attention. A framework for diagnostic evalu- - ation was proposed which recognised the need for evaluating the pupil as critic as well as interpreter.
Slater, Alan, Patricia Riddell, Paul C. Quinn, Olivier Pascalis, Kang Lee, and David J. Kelly. "Visual Perception." In The Wiley-Blackwell Handbook of Infant Development, 40–80. Oxford, UK: Wiley-Blackwell, 2010. http://dx.doi.org/10.1002/9781444327564.ch2.
Gabrielli, Silvia. "Visual Perception." In Encyclopedia of Database Systems, 1–5. New York, NY: Springer New York, 2016. http://dx.doi.org/10.1007/978-1-4899-7993-3_812-2.
Wolfe, Jeremy M. "Visual Perception." In States of Brain and Mind, 126–27. Boston, MA: Birkhäuser Boston, 1988. http://dx.doi.org/10.1007/978-1-4899-6771-8_50.
Thompson, William B. "Visual Perception." In Fundamentals of Computer Graphics, 515–58. Fourth edition. | Boca Raton: CRC Press, Taylor & Francis Group, [2016]: A K Peters/CRC Press, 2018. http://dx.doi.org/10.1201/9781315372198-20.
Gunnars, Tabitha, and Jason N. Bruck. "Visual Perception." In Encyclopedia of Animal Cognition and Behavior, 1–7. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-319-47829-6_610-1.
Тези доповідей конференцій з теми "Visual perception":
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Paragios, Nikos, and Nikos Komodakis. "Discrete Visual Perception." In 2014 22nd International Conference on Pattern Recognition (ICPR). IEEE, 2014. http://dx.doi.org/10.1109/icpr.2014.13.
Smith, Andrew Cyrus. "Visual perception skills testing." In the 3rd International Conference. New York, New York, USA: ACM Press, 2009. http://dx.doi.org/10.1145/1517664.1517709.
Bullimore, Mark A., Joanne M. Wood, and Kirk Swenson. "Motion Perception in Glaucoma." In Noninvasive Assessment of the Visual System. Washington, D.C.: Optica Publishing Group, 1992. http://dx.doi.org/10.1364/navs.1992.sub1.
The early detection of optic nerve damage is a prerequisite for effective therapy in primary open-angle glaucoma (Kass et al., 1990). An alarmingly large proportion of retinal ganglion cells may be damaged, however, before visual field defects are observed with conventional manual or automated perimetry (Quigley et al., 1982; Quigley et al., 1989). This implies that either there is widespread redundancy within the retina such that substantial cell death can occur without loss of visual performance or that our current clinical procedures do not test the function of the cells that are damaged in early glaucoma. Recent studies lead us to believe that the latter of these two hypotheses may be correct.
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Fleming, Roland W., and Manish Singh. "Visual perception of 3D shape." In ACM SIGGRAPH 2009 Courses. New York, New York, USA: ACM Press, 2009. http://dx.doi.org/10.1145/1667239.1667263.
Krbat'a, Jakub, Jaroslav Polec, Kvetoslava Kotuliakova, Filip Csoka, and Eva Smolejova. "Detection of Visual Perception Defects." In 2019 Signal Processing Symposium (SPSympo). IEEE, 2019. http://dx.doi.org/10.1109/sps.2019.8882104.
Hess, Ronald, and Peter Zaal. "Visual Perception in Manual Control." In AIAA Modeling and Simulation Technologies Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2011. http://dx.doi.org/10.2514/6.2011-6423.
Huber, Meghan E., Charlotte Folinus, and Neville Hogan. "Visual perception of limb stiffness." In 2017 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS). IEEE, 2017. http://dx.doi.org/10.1109/iros.2017.8206143.
Jaffe, C. Carl. "Visual Perception And Medical Imaging." In 1985 International Technical Symposium/Europe, edited by Paul Suetens and Ian T. Young. SPIE, 1986. http://dx.doi.org/10.1117/12.952138.
van Doorn, Andrea J., Huib de Ridder, and Jan Koenderink. "Picture perception and visual field." In IS&T/SPIE Electronic Imaging, edited by Bernice E. Rogowitz, Thrasyvoulos N. Pappas, and Huib de Ridder. SPIE, 2013. http://dx.doi.org/10.1117/12.2001609.
Albuquerque, Georgia, Martin Eisemann, and Marcus Magnor. "Perception-based visual quality measures." In 2011 IEEE Conference on Visual Analytics Science and Technology (VAST). IEEE, 2011. http://dx.doi.org/10.1109/vast.2011.6102437.
Sperling, George. Visual Motion Perception. Fort Belvoir, VA: Defense Technical Information Center, January 1989. http://dx.doi.org/10.21236/ada210994.
Turano, Kathleen A. Visual Motion Perception. Fort Belvoir, VA: Defense Technical Information Center, March 2000. http://dx.doi.org/10.21236/ada375117.
Matin, Leonard. Visual Perception of Elevation. Fort Belvoir, VA: Defense Technical Information Center, January 1993. http://dx.doi.org/10.21236/ada261394.
Sperling, George. Visual Motion Perception and Visual Information Processing. Fort Belvoir, VA: Defense Technical Information Center, December 1993. http://dx.doi.org/10.21236/ada278530.
Sperling, George. Visual Motion Perception and Visual Information Processing. Fort Belvoir, VA: Defense Technical Information Center, November 1997. http://dx.doi.org/10.21236/ada381575.
Sperling, George. Visual Motion Perception and Visual Attentive Processes. Fort Belvoir, VA: Defense Technical Information Center, June 1986. http://dx.doi.org/10.21236/ada172254.
Treisman, Anne M. Visual Perception of Features and Objects. Fort Belvoir, VA: Defense Technical Information Center, September 1991. http://dx.doi.org/10.21236/ada248578.
Todd, James T. Visual Perception of Structure from Motion. Fort Belvoir, VA: Defense Technical Information Center, April 1992. http://dx.doi.org/10.21236/ada253235.
Treisman, Anne. Visual Perception and Memory of Objects. Fort Belvoir, VA: Defense Technical Information Center, May 1995. http://dx.doi.org/10.21236/ada298074.
Todd, James T. Visual Perception of Structure from Motion. Fort Belvoir, VA: Defense Technical Information Center, November 1989. http://dx.doi.org/10.21236/ada216416.
