Design for Silicon Cortex.
Abstract
This research analyzed mathematical properties of the discrete Gabor filter and tested it on real imagery. Several unexpected results emerged. The discrete Gabor filter, is not a wavelet, and is not a complete image decomposition function. To complete the set, additional filters are required. The Gab or filter measured binocular disparity to 1/100th pixel accuracy. However, there was an large phase spread across contrast boundaries, due to the poor bandpass of analog video signals feeding the frame buffer. In recognizing handwritten characters, the discrete Gab or filter performed more poorly than wavelets, because of the lack of components which would have recognized junction topologies of characters with 'X' and 'Y' sub-geometries. This failure is related to the lack of completeness discovered in the mathematical analysis. Such negative results preclude the design of a general purpose silicon cortex architecture. Nevertheless, later studies could augment the components proposed here, testing them on a high performance general purpose processor such as the C80 system from GIC, or the CNAPS. (KAR) P. 1
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 07, 1995
- Accession Number
- ADA296381
Entities
People
- Andrew F. Laine
- Carl F. Weiman