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:
Jun. 15, 1999
Filed:
Mar. 14, 1997
Jong-dae Kim, Kwacheon, KR;
Sanjit K Mitra, Santa Barbara, CA (US);
Kye-ho Park, Suwon, KR;
Dong-seek Park, Daegu, KR;
The Regents of the University of California, Oakland, CA (US);
Samsung Electronics Co., Ltd., Kyungki-Do, KR;
Abstract
A local relaxation method for estimating optical flow using a Poisson equation is provided. The local relaxation method includes the steps of a) determining the Poisson equation in a linear matrix of Gx=Ex+b according to a change of time, b) decoupling the determined velocity combination term of the Poisson equation, and c) applying a displaced frame difference of a temporal change to the Poisson equation where the velocity combination term is decoupled. Accordingly, the convergence speed is faster than that obtained using conventional technology. Also, in the case that a displaced frame difference is applied, the convergence value is accurate and motion in every pixel can be estimated in order to enhance image quality, and in the case of a video code, compression gain can be obtained by using a portion of a motion vector, i.e., the motion vector of a low band signal.