Orientation-defined textures (ODT) are of a particular significance to low and intermediate level vision, and here we investigate them from a computational, psychophysical, and physiologicial perspectives. Geometrically, we show that two curvatures arise, which describes the textures local behavior and which are used to develop a theory of ODT "good continuation" that extends common terminology from Gestalt psychology. Computationally, we then use this theory for the contextual organization of globally (piecewise-) coherent flows from noisy and locally incoherent measurements, a biologically motivated computation which we apply and demonstrate on texture, shading, and color images. We further extend the formal analysis to novel psychophysical findings in orientation-based texture segmentation, as well as to a new functional explanation for basic aanatomical features of the primary visual cortex.
Event Details
The perceptual organization of orientation-defined textures: Differential geometry, psychophysics, and visual cortex
- Event Date: May 17, 2004
- Event Start Time: 2:00 PM
- Event End Time: 3:00 PM
- Event Location: <a href="http://www.cs.yale.edu/~sharar">http://www.cs.yale.edu/~sharar</a>
- Event Type: Human and Computer Vision Series
- Event Semester: Spring 2004
- Event Contact: Ohad Ben-Shahar
- Event Extra info:
<a href="mailto:
This email address is being protected from spambots. You need JavaScript enabled to view it. ">Ohad Ben-Shahar</a>