Studies of contrast sensitivity of the human eyes show that logarithmic curves obey the Weber-Fechner law of just noticeable difference response in human perception. In this paper, we propose a local contrast enhancement algorithm with logarithm-based curves for both high dynamic and low dynamic images and this algorithm can adaptively change the curvature with local information. We also define two parameters to decide the level of contrast enhancement in the tone mapping procedure. For halo artifact which is suffered from local operator, a two-stage procedure is designed to solve the problem. We present experimental results to show performance of our algorithm compared with other existing methods.
A Two-Stage Contrast Enhancement Algorithm for Digital Images
2008 Congress on Image and Signal Processing ; 3 ; 256-260
01.05.2008
2151641 byte
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
New Methods for Contrast Enhancement in Digital Images
British Library Online Contents | 2001
|Contrast enhancement for mailpiece images
IEEE | 1994
|Contrast Enhancement for Mailpiece Images
British Library Conference Proceedings | 1994
|British Library Conference Proceedings | 2004
|Contrast Enhancement for Enlarged Images Based on Edge Sharpening
British Library Conference Proceedings | 2005
|