TY - GEN
T1 - Underwater image restoration based on contrast enhancement
AU - Liu, Hui
AU - Chau, Lap Pui
N1 - Publisher Copyright:
© 2016 IEEE.
PY - 2016/7/2
Y1 - 2016/7/2
N2 - Low contrast and color distortion are two major problems suffered by underwater images. In this work, a novel and systematic enhancement method based on contrast enhancement is proposed to restore the degraded underwater images. The proposed method mainly contains three steps. First, the quadtree subdivision strategy is adopted to estimate the waterlight. Then we formulate a cost function and minimize it so as to find the optimal transmission map which is able to maximize the image contrast. Once the waterlight and transmission map are obtained, based on the underwater image degradation model, the backscattering effect and color distortion caused by the light attenuation along the underwater object-camera path can be corrected. Finally, to further compensate for the color loss along the surface-object propagation path, a simple but effective color correction method is applied. Experimental results demonstrate that our proposed method can achieve comparable or even better results than some state-of-The-Art approaches.
AB - Low contrast and color distortion are two major problems suffered by underwater images. In this work, a novel and systematic enhancement method based on contrast enhancement is proposed to restore the degraded underwater images. The proposed method mainly contains three steps. First, the quadtree subdivision strategy is adopted to estimate the waterlight. Then we formulate a cost function and minimize it so as to find the optimal transmission map which is able to maximize the image contrast. Once the waterlight and transmission map are obtained, based on the underwater image degradation model, the backscattering effect and color distortion caused by the light attenuation along the underwater object-camera path can be corrected. Finally, to further compensate for the color loss along the surface-object propagation path, a simple but effective color correction method is applied. Experimental results demonstrate that our proposed method can achieve comparable or even better results than some state-of-The-Art approaches.
KW - color correction
KW - image contrast
KW - transmission map
KW - Waterlight
UR - http://www.scopus.com/inward/record.url?scp=85016182571&partnerID=8YFLogxK
U2 - 10.1109/ICDSP.2016.7868625
DO - 10.1109/ICDSP.2016.7868625
M3 - Conference article published in proceeding or book
AN - SCOPUS:85016182571
T3 - International Conference on Digital Signal Processing, DSP
SP - 584
EP - 588
BT - Proceedings - 2016 IEEE International Conference on Digital Signal Processing, DSP 2016
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2016 IEEE International Conference on Digital Signal Processing, DSP 2016
Y2 - 16 October 2016 through 18 October 2016
ER -