Perceptual Grouping of Dichoptic Plaids

Perceptual Grouping and Change Detection Perceptual Grouping in Change Detection Perceptual Grouping and Change Detection

Detection of an item changing its location from one instance to another is typically unaffected by changes in the shape or color of contextual items. However, we demonstrate here that such location change detection is severely impaired if the elongated axes of contextual items change orientation, even though individual locations remain constant and even though the orientation was irrelevant to ...

Dynamics of perceptual bi - stability : plaids and binocular rivalry compared

This chapter presents a set of findings about the dynamics of bi-stable alternations in the perception of plaids. A plaid is a pattern comprised of two superimposed gratings. When the plaid is set in motion, it becomes an ambiguous stimulus: it can be seen as one pattern moving in a single direction (“coherency”), or as two gratings, each moving in different directions with one sliding over the...

Target-driven Perceptual Grouping

Perceptual Grouping Using Superpixels

Perceptual grouping plays a critical role in both human and computer vision. However, with the object categorization community’s preoccupation with object detection, interest in perceptual grouping has waned. The reason for this is clear: the object-independent, mid-level shape priors that form the basis of perceptual grouping are subsumed by the object-dependent, high-level shape priors define...

Regularity-based Perceptual Grouping

This paper investigates perceptual grouping from a logical point of view, defining a grouping interpretation as a particular kind of logical expression, and then developing an explicit inference theory in terms of such expressions. First, a regularity-based interpretation language is presented, in which an observed configuration is characterized in terms of the regularities (special configurati...