Rabin & Berdo, P.C.
Method and apparatus for automatic brightness adjustment of image signal processor
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.
Electronics and Telecommunications Research Institute Soongsil University Research Consortium Techno-Park
G G H
G06T G06T H04N
additional inventional inventional
Jung Hwan Chang Sun Seong Soo Jang Hyun Seong Hoon
Choi Kim Lee Park Choi