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:
Oct. 13, 2009
Filed:
Jan. 26, 2006
Tarik Arici, Marietta, GA (US);
Toygar Akgun, Atlanta, GA (US);
Yucel Altunbasak, Norcross, GA (US);
Tarik Arici, Marietta, GA (US);
Toygar Akgun, Atlanta, GA (US);
Yucel Altunbasak, Norcross, GA (US);
Vestel Elecktronik Sanayi Ve, Organize Sanayi Bolgesi, TR;
Abstract
A method and apparatus for adjusting the contrast of an input image is disclosed. Brightness level data of the input image is filtered to obtain at least a low frequency component and a high frequency component. The high frequency component is amplified. The input image and the amplified high frequency component are summed to produce brightness level data of the output image. The filtering is carried out by at least one recursive infinite impulse response filter having a single delay coefficient that is adaptive to areas of high contrast in the input image.