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:
Feb. 04, 2014
Filed:
May. 18, 2012
Chao-yi Cho, Taichung, TW;
Tse-min Chen, Hsinchu, TW;
Chao-Yi Cho, Taichung, TW;
Tse-Min Chen, Hsinchu, TW;
Industrial Technology Research Institute, Hsinchu, TW;
Abstract
A method for detecting dead pixels obtains a downsampling set formed by a plurality of sample pixels by downsampling a to-be-tested image, and computes a moving average for each sample pixel to determine whether the sample pixel is a dead pixel candidate. If so, all pixels in a neighborhood of the dead pixel candidate are determined as to-be-detected pixels. For each to-be-detected pixel, a compensated value and a weighted average under a mask are estimated. A hypothetic dead pixel value is obtained by comparing an original pixel value of each to-be-detected pixel and the moving average of the dead pixel candidate. Whether the to-be-detected pixel is a dead pixel is determined by using the original pixel value, the compensated value, the weighted average and the hypothetic dead pixel value.