The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 18, 2006
Filed:
Dec. 14, 2000
Stanley Osher, Pacific Palisades, CA (US);
Li-tien Cheng, Los Angeles, CA (US);
Barry Merriman, Los Angeles, CA (US);
Hong-kai Zhao, Irvine, CA (US);
Haomin Zhou, Pasadena, CA (US);
Stanley Osher, Pacific Palisades, CA (US);
Li-Tien Cheng, Los Angeles, CA (US);
Barry Merriman, Los Angeles, CA (US);
Hong-Kai Zhao, Irvine, CA (US);
Haomin Zhou, Pasadena, CA (US);
Level Set Systems, Inc., Pacific Palisades, CA (US);
Abstract
A method and apparatus for compression and restoration of images, videos, surfaces, curves and, generally, pixel-based data sets, including: feature-based quantization using a set of N isocontours; compressing each of these N contours using a level set-based compression of curves or surfaces—and/or combining the quantization with a conventional method for compression of surfaces; and decompressing the compressed data using a nonoscillatory reconstruction. The method is naturally multiscale, but does not use wavelets or other multiscale-basis functions. The method performs compression and decompression (1) without excessive computational complexity, even in the presence of topological changes such as merging or breaking of isocontours as the scale changes, (2) with excellent image fidelity, (3) without unacceptable artifacts such as ringing, blurring, or blocking, (4) with simple and natural grid based ways of calculating geometric features such as normals, principal curvatures.