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. 18, 2014
Filed:
Oct. 14, 2011
Seong Hoon Choi, Seoul, KR;
Jang Hyun Park, Seoul, KR;
Chang Sun Kim, Seoul, KR;
Seong Soo Lee, Seoul, KR;
Jung Hwan Choi, Seoul, KR;
Seong Hoon Choi, Seoul, KR;
Jang Hyun Park, Seoul, KR;
Chang Sun Kim, Seoul, KR;
Seong Soo Lee, Seoul, KR;
Jung Hwan Choi, Seoul, KR;
Electronics and Telecommunications Research Institute, Daejeon, KR;
Soongsil University Research Consortium Techno-Park, Seoul, KR;
Abstract
An automatic brightness adjusting method and apparatus for image signal processor (ISP) is provided. The image processing apparatus may include a histogram generating unit, a cumulative distribution function calculator, and a histogram equalization (HE) unit. The histogram generating unit may generate a histogram of brightness values of pixels in an input image. The cumulative distribution function calculator may generate a cumulative distribution function and an inverse cumulative distribution function, based on the generated histogram. The HE unit may generate a conversion function based on the cumulative distribution function and the inverse cumulative distribution function, and may apply HE to the input image based on the conversion function so as to generate an output image.