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:
Jul. 12, 2011
Filed:
Mar. 06, 2008
Hsu-pin Kao, Pingjhen, TW;
Yi-chia Shan, Jhongli, TW;
Hsu-chia Kao, Pingjhen, TW;
Kai-chiang Hsu, Tucheng, TW;
Hsu-Pin Kao, Pingjhen, TW;
Yi-Chia Shan, Jhongli, TW;
Hsu-Chia Kao, Pingjhen, TW;
Kai-Chiang Hsu, Tucheng, TW;
Marketech International Corp., Taipei, TW;
Abstract
The invention discloses an image processing apparatus for adjusting lightness of an input image. The image processing apparatus includes a first processing module, a second processing module, a third processing module, and a fourth processing module. The first processing module is used for generating a lightness histogram with reference to the input image and determining a maximum lightness and an average lightness according to the lightness histogram. The second processing module is used for determining a first gain and a second gain according to the maximum lightness and a look-up table. The third processing module is used for selecting a lightness adjusting curve according to the average lightness. The fourth processing module is used for generating an output lightness corresponding to the input image.