Continuous symmetry: a model for human figural perception

Continuous symmetry: a model for human figural perception.

Symmetry is usually viewed as a discrete feature: an object is either symmetric or non-symmetric. In this presentation, symmetry is treated as a continuous feature and a continuous measure of symmetry (the Symmetry Distance) is defined. This measure can be easily evaluated for any shape or pattern in any dimension. A preliminary study presented here shows that the Symmetry Distance is commensur...

A biologically plausible model of human shape symmetry perception.

Symmetry is usually computationally expensive to encode reliably, and yet it is relatively effortless to perceive. Here, we extend F. J. A. M. Poirier and H. R. Wilson's (2006) model for shape perception to account for H. R. Wilson and F. Wilkinson's (2002) data on shape symmetry. Because the model already accounts for shape perception, only minimal neural circuitry is required to enable it to ...

Figural goodness effects in perception and memory

There is an apparent contradiction concerning configurational effects in visual information processing. Some studies have shown that when an array is organized into a "good" or unitary Gestalt, analysis of a single part of it is facilitated, while others have shown "good" arrays to impede search for a part. The three experiments reported here support the proposition that goodness of form can fa...

Figural aftereffects in the perception of faces.

We examined figural aftereffects in images of human faces, for which changes in configuration are highly discriminable. Observers either matched or rated faces before or after viewing distorted images of faces. Prior adaptation strongly biases face perception by causing the original face to appear distorted in a direction opposite to the adapting distortion. Aftereffects transferred across diff...

Form Metrics for Interactive Rendering via Figural Models of Perception