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:
Jul. 04, 1995
Filed:
Oct. 16, 1991
Applicant:
Inventors:
Kengo Takahama, Osaka, JP;
Yasukuni Yamane, Osaka, JP;
Assignees:
Sharp Corporation, Osaka, JP;
Ezel Inc., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
348208 ; 348416 ;
Abstract
A moving vector extractor for detecting a shaking of an image through a video camera in order to improve accuracy of the detection. Even when the image is dark or of low density gradient as a whole, a density gradient value around representative point is calculated. Basic data of moving vector of the difference value between successive frames is obtained by calculating an absolute value or a squared value. The basic data of the moving vector is weighted according to a density gradient value so as to improve the precision of moving vector extraction.