Method and system for image compression using image symmetry
US7254275B2 · kind B2 · utility
5Cited by
6References
29Claims
0Family size
Assignee
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Key dates
| Filing date | Dec 17, 2002 |
| Grant date | Aug 7, 2007 |
| Priority date | — |
| Expiry date | Nov 3, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V40/16
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An image compression system and method is described, which makes use of the symmetry found in faces and heads to perform the compression. The image is divided along the line of symmetry, and pairs of corresponding pixels on the two divided sides are determined. A weighted average and a weighted variance of the pixel values of the pairs is computed, and is used to encode the image. A transform such as the Karhunen-Loeve transform is used to compute the weighted averages and variances.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.