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:
Dec. 09, 2003
Filed:
May. 22, 1996
Shinichiro Koga, Utsunomiya, JP;
Yoshihiro Ishida, Kawasaki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
In one aspect, an image processing apparatus inputs an input image signal and detecting whether or not there is a frame change in an image by comparing the input image signal with a reference image signal. A memory is used for updating the reference image signal by storing the input image signal as the reference image signal in units of frames when there is a frame change. In another aspect, the image processing apparatus extracts change components between images by comparing the input image signal with the reference image signal, the reference image signal being an earlier input signal when a most recent prior change component was extracted. The extracted change components are corrected by detecting and removing an erroneously extracted change component, and an image change is discriminated in the input image signal on the basis of the change components as corrected.