TY - GEN
T1 - Contrast enhancement based on layered difference representation
AU - Lee, Chulwoo
AU - Li, Chul
AU - Kim, Chang-Su
PY - 2012
Y1 - 2012
N2 - 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 at all layers into the overall transformation function. Simulation results demonstrate that the proposed algorithm enhances images efficiently in terms of both objective quality and subjective quality.
AB - 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 at all layers into the overall transformation function. Simulation results demonstrate that the proposed algorithm enhances images efficiently in terms of both objective quality and subjective quality.
KW - Contrast enhancement
KW - and constrained optimization
KW - histogram equalization
KW - layered difference representation
UR - https://www.scopus.com/pages/publications/84875853336
UR - https://www.scopus.com/pages/publications/84875853336#tab=citedBy
U2 - 10.1109/ICIP.2012.6467022
DO - 10.1109/ICIP.2012.6467022
M3 - Conference contribution
AN - SCOPUS:84875853336
SN - 9781467325332
T3 - Proceedings - International Conference on Image Processing, ICIP
SP - 965
EP - 968
BT - 2012 IEEE International Conference on Image Processing, ICIP 2012 - Proceedings
T2 - 2012 19th IEEE International Conference on Image Processing, ICIP 2012
Y2 - 30 September 2012 through 3 October 2012
ER -