Contrast enhancement based on layered difference representation

@article{Lee2012ContrastEB,
  title={Contrast enhancement based on layered difference representation},
  author={Chulwoo Lee and Chul Lee and Chang-Su Kim},
  journal={2012 19th IEEE International Conference on Image Processing},
  year={2012},
  pages={965-968}
}
A novel contrast enhancement algorithm based on the layered difference representation is proposed in this work. We first represent gray-level differences at multiple layers in a tree-like structure. Then, based on the observation that gray-level differences, occurring more frequently in the input image, should be more emphasized in the output image, we solve a constrained optimization problem to derive the transformation function at each layer. Finally, we aggregate the transformation functions… CONTINUE READING
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