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

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4 Author(s)
Sang-Yeon Kim ; DTV Res. Labs., LG Electron. Inc., Seoul, South Korea ; Dongil Han ; Seung-Jong Choi ; Jong-Seok Park

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

Published in:

Consumer Electronics, IEEE Transactions on  (Volume:45 ,  Issue: 3 )