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:
Oct. 08, 2002
Filed:
Aug. 20, 1998
Yi-Jen Chiu, Holmdel, NJ (US);
John Hartung, Warren, NJ (US);
Lucent Technologies Inc., Murray Hill, NJ (US);
Abstract
A method for estimating motion vectors between a current frame and a reference frame of a video signal wherein the current frame is divided into a plurality of search blocks and the reference frame and is defined to include a plurality of search regions corresponding to the plurality of search blocks, each of the plural search regions having a plurality of candidate blocks. The method includes the steps of calculating horizontal and vertical features of a reference frame based on pixel data of the reference frame; storing the calculated horizontal and vertical features; computing horizontal and vertical features of a k search block of the plurality of search blocks; comparing the horizontal and vertical features of the k search block with those of each of the plurality of candidate blocks of the reference frame in a corresponding search region using a computationally-efficient error measure; selecting a candidate block which yields a minimal error measure; and computing a motion vector for the k search block based on the selected candidate block.