Visual Representations of Texture
Abstract
This research is concerned with understanding both the computational and neurophysiological bases of texture segregation. During the grant period we have (a) conducted a series of experiments investigating the interaction of size and contrast in texture segregation, (b) compared our experimental results with calculated outputs of a two dimensional Gabor model of simple-cell-like spatial- frequency channels, (c) established that the function describing perceived segregation of a texture resulting from lightness differences of the texture elements is not the same as the function describing the perceived lightness differences of the elements. We also showed that the outputs of spatial frequency channels that predict the perceived segregation of texture regions failed to predict the perceived salience of a line composed of disconnected shapes embedded in a background of the same shapes. The second part of the report describes work by Stevens on the earliest levels in the extraction of geometric structure.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 15, 1988
- Accession Number
- ADA204480
Entities
People
- Jacob Beck
- Kent A. Stevens
Organizations
- University of Oregon