A multiresolution spline with application to image mosaics
ACM Transactions on Graphics (TOG)
A hierarchical morphological image decomposition
Pattern Recognition Letters
Multiscale color image enhancement
Pattern Recognition Letters
Digital Color Management: Encoding Solutions
Digital Color Management: Encoding Solutions
Gradient domain high dynamic range compression
Proceedings of the 29th annual conference on Computer graphics and interactive techniques
Multiscale Contrast Enhancement of Medical Images
ICASSP '97 Proceedings of the 1997 IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP '97) -Volume 4 - Volume 4
Color Image Enhancement by Fuzzy Intensification
ICPR '00 Proceedings of the International Conference on Pattern Recognition - Volume 3
ACM SIGGRAPH 2003 Papers
IEEE Transactions on Image Processing
Gray and color image contrast enhancement by the curvelet transform
IEEE Transactions on Image Processing
Image contrast enhancement using morphological decomposition by reconstruction
WSEAS Transactions on Circuits and Systems
Hi-index | 0.00 |
We present a technique that achieves local contrast enhancement by representing it as an optimization problem. For this, we first introduce a scalar objective function that estimates the average local contrast of the image; to achieve the contrast enhancement, we seek to maximize this objective function subject to strict constraints on the local gradients and the color range of the image. The former constraint controls the amount of contrast enhancement achieved while the latter prevents over or under saturation of the colors as a result of the enhancement. We propose a greedy iterative algorithm, controlled by a single parameter, to solve this optimization problem. Thus, our contrast enhancement is achieved without explicitly segmenting the image either in the spatial (multi-scale) or frequency (multi-resolution) domain. We demonstrate our method on both gray and color images and compare it with other existing global and local contrast enhancement techniques.