Apparatus and method for radial and angular or rotational analysis of images for shape content and matching
USRE42070E1 · kind E1 · reissue
Assignee
Inventor
Key dates
| Filing date | Mar 10, 2009 |
| Grant date | Jan 25, 2011 |
| Priority date | — |
| Expiry date | Mar 10, 2029 |
Classification
- Technology area (CPC —)General
Abstract
A segmented radial spatial light modulator has an active optic area comprising a plurality of radially extending active optic modulators disposed at various angular orientations with respect to a central axis. The segmented radial spatial light modulator is used in separating and isolating portions of Fourier transform optic patterns from images for characterization of images by shape for recording, storing, retrieving, searching, and comparison to other images for matches and near matches. The images can be ghosted to increase optical power in the Fourier transform optic pattern without adding new shape content and for grading comparisons to other image shape characteristics for identifying near matches in addition to matches.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.