A neural model of 3D shape-from-texture: multiple-scale filtering, boundary grouping, and surface filling-in.

Full 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.

Learn Faster Today Improve your study skills

Author information

Author/s: Grossberg, Stephen (S); Kuhlmann, Levin (L); Mingolla, Ennio (E);

Affiliation: Department of Cognitive and Neural Systems, Center for Adaptive Systems, Boston University, 677 Beacon Street, Boston, MA 02215, USA. steve(-atsign-)bu.edu

Journal and publication information

Publication Type: Journal Article; Research Support, U.S. Gov't, Non-P.H.S.

Journal: Vision research (Vision Res), published in England. (Language: eng)

Reference: 2007-Mar; vol 47 (issue 5) : pp 634-72

Dates: Created 2007/02/19; Completed 2007/05/21;

PMID: 17275061, status: MEDLINE (last retrieval date: 12/26/2008)

Sourced from the National Library of Medicine. Abstract text and other information may be subject to copyright.

External Links for this article (including full text providers, if available):

Click Electronic Full-text Provider Links to see options for finding the electronic full text links to this article. Note there may be a subscription or fee required for access to the full text. See our FAQ for information on finding FREE full text articles.

This article may also be located in paper journal collections available in many libraries. Use the Journal and Publication Information above to find the full article.

MeSH headings (categories)

This article was linked to the MESH Headings shown below.

Orientation
Pattern Recognition, Visual - physiology
Perceptual Closure - physiology
Vision Disparity - physiology
Vision, Binocular - physiology
Visual Cortex - physiology

These are the highest related articles currently in the database:

Approximation, torsion, and amodally-completed surfaces. 26 Mar 2008
Early neural activity in Necker-cube reversal: evidence for low-level processing of a gestalt phenomenon. 30 Dec 2003
Unraveling mechanisms for expert object recognition: bridging brain activity and behavior. 30 Mar 2002
Visual cortical mechanisms of perceptual grouping: interacting layers, networks, columns, and maps. 29 Jun 2000
Contour completion through depth interferes with stereoacuity. 30 Jul 2002
Visual field anisotropy revealed by perceptual filling-in. 30 Aug 2003
T-junctions and perceived slant of partially occluded surfaces. 30 Dec 2002
Illusory contours and surfaces without amodal completion and depth stratification. 30 Dec 2003
A model of contextual interactions and contour detection in primary visual cortex. 30 May 2004
Using afterimages to test neural mechanisms for perceptual filling-in. 30 May 2004

See 100+ related articles.