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:
Mar. 24, 2015
Filed:
Nov. 21, 2012
Hitachi, Ltd., Tokyo, JP;
Akira Irinouchi, Hitachinaka, JP;
Makoto Asuka, Mito, JP;
Hitachi Industry & Control Solutions, Ltd., Ibaraki, JP;
Abstract
Defective pixels are to be selected so as not to cause image degradation. A defective pixel correction unitin an image processing apparatusobtains an imaging signal afrom an imaging sensorvia a gain adjustment unitand calculates an absolute value for the pixel value difference between a pixel to be tested for a defect of the imaging sensorand each of its surrounding pixels, respectively. Next, the defective pixel correction unitcompares the differential with a defective pixel determination threshold value and determines the pixel being tested as defective, if the differential is greater than the threshold value. It should be noted that the threshold value is changed according to the magnitude of an image transition, by detecting the image transition of a video signal ain an image transition detection unit