Texture boundary segmentation is typically thought to reflect a comparison of differences in
Fourier energy (ie low-order texture statistics) on either side of a boundary. However in a …

While the contrast sensitivity approach has been successful in evaluating the processing of
first-order stimuli, there is a need to develop comparable ways of assessing second-order …

Orientation-modulated stimuli are thought to be processed via a two-stage process, the first
stage involving the detection of the carrier by mechanisms in striate cortex and the second …

The visual system exploits a cortical hierarchy to process complex inputs such as those
defined by modulations of motion and/or texture. One class of visual stimuli, composed of …

Our perceptual experience of the visual world relies on successful segmentation of distinct
regions in an image to delineate the boundaries between them. This thesis details a series …

Perceiving motion patterns in visual scenes in which speed or motion direction varies over
space while average luminance remains constant presents a processing task that requires …