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• W2149471836 endingPage "672" @default.
• W2149471836 startingPage "634" @default.
• W2149471836 abstract "A neural model is presented of how cortical areas V1, V2, and V4 interact to convert a textured 2D image into a representation of curved 3D shape. Two basic problems are solved to achieve this: (1) Patterns of spatially discrete 2D texture elements are transformed into a spatially smooth surface representation of 3D shape. (2) Changes in the statistical properties of texture elements across space induce the perceived 3D shape of this surface representation. This is achieved in the model through multiple-scale filtering of a 2D image, followed by a cooperative-competitive grouping network that coherently binds texture elements into boundary webs at the appropriate depths using a scale-to-depth map and a subsequent depth competition stage. These boundary webs then gate filling-in of surface lightness signals in order to form a smooth 3D surface percept. The model quantitatively simulates challenging psychophysical data about perception of prolate ellipsoids [Todd, J., & Akerstrom, R. (1987). Perception of three-dimensional form from patterns of optical texture. Journal of Experimental Psychology: Human Perception and Performance, 13(2), 242–255]. In particular, the model represents a high degree of 3D curvature for a certain class of images, all of whose texture elements have the same degree of optical compression, in accordance with percepts of human observers. Simulations of 3D percepts of an elliptical cylinder, a slanted plane, and a photo of a golf ball are also presented." @default.
• W2149471836 created "2016-06-24" @default.
• W2149471836 creator A5013925237 @default.
• W2149471836 creator A5069146692 @default.
• W2149471836 creator A5080971897 @default.
• W2149471836 date "2007-03-01" @default.
• W2149471836 modified "2023-09-23" @default.
• W2149471836 title "A neural model of 3D shape-from-texture: Multiple-scale filtering, boundary grouping, and surface filling-in" @default.
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