Image contrast enhancement based on the piecewise-linear approximation of CDF

Authors:
Sang-Yeon Kim;Dongil Han;Seung-Jong Choi;Jong-Seok Park
Affiliations:
DTV Res. Labs., LG Electron. Inc., Seoul;-;-;-
Venue:
IEEE Transactions on Consumer Electronics
Year:
1999

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Abstract

We present a new image contrast enhancing method based on the piecewise-linear approximation of the cumulative density function (CDF). Reduced hardware is required for CDF calculation, since the number of bins is greatly reduced thanks to this approximation. With the proposed method, various contrast enhancing effects can be implemented such as histogram equalization, partial or entire histogram modification