Method and device for the real-time localization of rectilinear contours in a digitized image, notably for shape recognition in scene analysis processing
US5233670A · kind A · utility
39Cited by
6References
9Claims
0Family size
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Key dates
| Filing date | Jul 22, 1991 |
| Grant date | Aug 3, 1993 |
| Priority date | — |
| Expiry date | Jul 22, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30184
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Apparatus and method to localize rectilinear contours in a digitized image for recognizing shapes at a scene. The gradient of the gray level function of the image at the position of each pixel is determined, and those pixels which constitute a contour pixel are identified. The identified contour pixels are complemented with filler pixels where discontinuities are found. The neighborhood of pixels about a contour pixel is compared with a series of characteristic pixel configurations to determine if a correspondence exists with the characteristic configurations. In this way, rectilinear contour pixels are identified.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.