Segmentation of Moving Images by the Primate Visual System
Author | : Gene R. Stoner |
Publisher | : |
Total Pages | : 370 |
Release | : 1992 |
Genre | : |
ISBN | : |
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Author | : Gene R. Stoner |
Publisher | : |
Total Pages | : 370 |
Release | : 1992 |
Genre | : |
ISBN | : |
Author | : Jon H. Kaas |
Publisher | : CRC Press |
Total Pages | : 439 |
Release | : 2003-07-28 |
Genre | : Medical |
ISBN | : 0203507592 |
The last 20 years of research have been marked by exceptional progress in understanding the organization and functions of the primate visual system. This understanding has been based on the wide application of traditional and newly emerging methods for identifying the functionally significant subdivisions of the system, their interconnections, the
Author | : Jan Kremers |
Publisher | : John Wiley & Sons |
Total Pages | : 382 |
Release | : 2005-12-13 |
Genre | : Science |
ISBN | : 0470868104 |
Many recent developments in the field in recording, staining, genetic and stimulation techniques, in vivo, and in vitro have significantly increased the amount of available data on the primate visual system. Written with contributions from key neurobiologists in the field, The Primate Visual System will provide the reader with the latest developments, examining the structure, function and evolution of the primate visual system. The book takes a comparative approach as a basis for studying the physiological properties of primate vision and examines the phylogenetic relationship between the visual systems of different primate species. Taken from a neurobiologist’s perspective this book provides a unique approach to the study of primate vision as a basis for further study into the human visual system. Altogether an important overview of the structure, function and evolution of the primate visual system from a neurobiologist’s perspective, written specifically for higher level undergraduate and graduate students taking courses in neuroscience, physiology, optics/ visual science, as well as a valuable read to researchers new to the field.
Author | : Yoon Ho Bai |
Publisher | : |
Total Pages | : 206 |
Release | : 2020 |
Genre | : |
ISBN | : |
A fundamental goal of sensory processing is predicting the future state of the environment. Visual prediction is difficult because the stream of images on the retina evolves according to irregular, curved trajectories. We posit that the visual system seeks to transform natural inputs such that neural representations follow straighter and more predictable trajectories. Previous work has provided psychophysical evidence for this hypothesis by showing that the human visual system selectively straightens the temporal trajectories of natural movies, thus facilitating their extrapolation. In this thesis, I investigate the neural basis of perceptual straightening. We hypothesize that perceptual straightening is achieved through a series of cascaded transformations and found supporting evidence from psychophysical and neurophysiological measurements. We estimated the curvature of internal trajectories from human perceptual judgements across distinct sub-regions of the visual field. Perceptual results suggest that computations that underlie object recognition overlap with those that straighten natural movies, thereby revealing deficits in both processes--crowding and absence of straightening in the periphery. We posit that straightening occurs at multiple stages in the ventral stream as it is linked to recognizing objects. Next, we investigated if straightening occurs as early as the primary visual cortex (V1). We developed a novel computational tool to infer trajectories from neural populations and found robust straightening in V1 recordings from anesthetized macaques. Next, we explored the computational basis of V1 results with an image-computable model. We built a model to describe well-known computations of V1 cells and tested the model with the same movie stimuli. Model-predictions reveal that these computations only partially engage the mechanisms for straightening, revealing the involvement of more complex visual mechanisms. To further test our hypothesis, we asked if additional straightening occurs across the V1-V2 cascade. We recorded populations in areas V1 and V2 from awake fixating monkeys. Consistent with our hypothesis, we find incremental straightening between V1 and V2 elicited by the same natural movies. Together, we find collective evidence of neural straightening as an emergent property that contributes to perceptual straightening in a progressive manner starting from the early stages of vision
Author | : Karen R. Dobkins |
Publisher | : |
Total Pages | : 516 |
Release | : 1992 |
Genre | : |
ISBN | : |
Author | : Kevin A. Haynes |
Publisher | : |
Total Pages | : 134 |
Release | : 1996 |
Genre | : Motion perception (Vision) |
ISBN | : |
Author | : Walter Kropatsch |
Publisher | : Springer Science & Business Media |
Total Pages | : 1025 |
Release | : 2007-08-14 |
Genre | : Computers |
ISBN | : 3540742719 |
The refereed proceedings of the 12th International Conference on Computer Analysis of Images and Patterns are presented in this volume. The papers cover motion detection and tracking, medical imaging, biometrics, color, curves and surfaces beyond two dimensions, reading characters, words and lines, image segmentation, shape, image registration and matching, signal decomposition and invariants, and features and classification.
Author | : John Simon Werner |
Publisher | : MIT Press |
Total Pages | : 975 |
Release | : 2004 |
Genre | : Cell physiology |
ISBN | : 0262033089 |
An essential reference book for visual science.
Author | : Guillaume S. Masson |
Publisher | : Springer Science & Business Media |
Total Pages | : 362 |
Release | : 2009-12-02 |
Genre | : Medical |
ISBN | : 1441907815 |
Motion processing is an essential piece of the complex brain machinery that allows us to reconstruct the 3D layout of objects in the environment, to break camouflage, to perform scene segmentation, to estimate the ego movement, and to control our action. Although motion perception and its neural basis have been a topic of intensive research and modeling the last two decades, recent experimental evidences have stressed the dynamical aspects of motion integration and segmentation. This book presents the most recent approaches that have changed our view of biological motion processing. These new experimental evidences call for new models emphasizing the collective dynamics of large population of neurons rather than the properties of separate individual filters. Chapters will stress how the dynamics of motion processing can be used as a general approach to understand the brain dynamics itself.
Author | : Ruth Kimchi |
Publisher | : Psychology Press |
Total Pages | : 488 |
Release | : 2003-09-12 |
Genre | : Psychology |
ISBN | : 1135647240 |
An exploration of ideas emanating from behavioural, developmental, neurophysiological, neuropsychological and computational approaches to the problem of visual perceptual organization. It is based on papers presented at the 31st Carnegie Symposium on Cognition, held in June 2000.