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:
Sep. 28, 2004
Filed:
Jan. 18, 2001
Wen-Chieh Hsieh, Taipei Hsien, TW;
Kinpo Electronics, Inc., Taipei, TW;
Abstract
There is disclosed an automatic white-balance correction method for digital camera, which divides a captured picture into multiple sampled regions for performing a white-balance correction. The image data of the captured picture is transformed form RGB format to YCrCb format. Then, the mean values of Y, Cr, and Cb are calculated for each sampled region based on the multiple sampled regions. Finally, Cr and Cb are used as two coordinate axes to define four quadrants, and the values of Cr and Cb of each sampled region are used to determine a corresponding quadrant for each sampled region, thereby determining a correction direction based on the number of sampled regions in each quadrant.