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:
Nov. 18, 2003
Filed:
Mar. 18, 1999
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
In connection with the detection of an amount of movement of an image such as a document image having a small gradient of brightness, it has been difficult to detect the amount by a representative point method, and a block matching method requires much time. An image (F ) at a time (T ), which has been imaged by moving an imaging section ( ), is taken into a memory ( ) and a feature point extracting section ( ), where feature points of the image (F ) are extracted, and an image (F ) at a start time (T ) of the subsequent frame is taken in the memory ( ) and the feature point extracting section ( ). A correlation operating section ( ) operates feature points of the image (F ) and the image (F ) in an area designated by a search area deciding section ( ) to output an amount of movement.