A Model of V4 Shape Selectivity and Invariance
نویسندگان
چکیده
منابع مشابه
A model of V4 shape selectivity and invariance.
Object recognition in primates is mediated by the ventral visual pathway and is classically described as a feedforward hierarchy of increasingly sophisticated representations. Neurons in macaque monkey area V4, an intermediate stage along the ventral pathway, have been shown to exhibit selectivity to complex boundary conformation and invariance to spatial translation. How could such a represent...
متن کاملSpectral receptive field properties explain shape selectivity in area V4.
Neurons in cortical area V4 respond selectively to complex visual patterns such as curved contours and non-Cartesian gratings. Most previous experiments in V4 have measured responses to small, idiosyncratic stimulus sets and no single functional model yet accounts for all of the disparate results. We propose that one model, the spectral receptive field (SRF), can explain many observations of se...
متن کاملTitle : A Model of V 4 Shape Selectivity and Invariance Authors :
Object recognition in primates is mediated by the ventral visual pathway and is classically described as a feedforward hierarchy of increasingly sophisticated representations. Neurons in macaque monkey area V4, an intermediate stage along the ventral pathway, have been shown to exhibit selectivity to complex boundary conformation and invariance to spatial translation. How could such a represent...
متن کاملOn a model of visual cortex: learning invariance and selectivity
In this paper we present a class of algorithms for similarity learningon spaces of images. The general framework that we introduce is mo-tivated by some well-known hierarchical pre-processing architectures forobject recognition which have been developed during the last decade, andwhich have been in some cases inspired by functional models of the ven-tral stream of the vi...
متن کاملSelectivity and tolerance ("invariance") both increase as visual information propagates from cortical area V4 to IT.
Our ability to recognize objects despite large changes in position, size, and context is achieved through computations that are thought to increase both the shape selectivity and the tolerance ("invariance") of the visual representation at successive stages of the ventral pathway [visual cortical areas V1, V2, and V4 and inferior temporal cortex (IT)]. However, these ideas have proven difficult...
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ژورنال
عنوان ژورنال: Journal of Neurophysiology
سال: 2007
ISSN: 0022-3077,1522-1598
DOI: 10.1152/jn.01265.2006