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:
Sep. 15, 1998
Filed:
Mar. 17, 1997
Hae-Mook Jung, Seoul, KR;
Daewoo Electronics Co., Ltd., Seoul, KR;
Abstract
A blocking matching motion estimation apparatus estimates a displacement of a search block in a current frame with respect to each of candidate blocks in a previous frame to produce motion vectors and error signals representing the similarity between the search block and a candidate block. The motion estimating apparatus employs a weight function to weight a number of error signals based on a MSE measurement and selects a weighted error signal entailing a minimum error to produce a motion vector corresponding thereto. The weight function is determined by using either a local variance for a localized subblock defined for each pixel in the search block or a gradient of pixels in the search block filtered by a 2-dimensional gradient filter.