Underwater image enhancement based on color decay compensation and improved Retinex
Aiming at the problem that underwater images are usually affected by color deviation,noise and detail blur-ring,and it is difficult to be adapted to all kinds of visual tasks,this paper proposes a method of underwater image enhance-ment based on color attenuation compensation and improved multi-scale Retinex.Firstly,to address the problem of color de-viation in underwater images,the underwater images are separated into three channels:strong,medium and weak,and differ-ent scales of color compensation are applied to the three channels,secondly,the edge details and contrast are increased by the improved multi-scale Retinex algorithm,and the Gaussian filter is replaced by the guided filter in estimating the light com-ponent of the images,and finally the light component is corrected by combining with the adaptive gamma function.The ex-perimental results show that the method in this paper can effectively improve the color bias problem occurring in underwater images under different scenes,and can improve the contrast while increasing the image details,so that the quality of under-water images can be significantly improved.
color attenuation compensationmulti-scale Retinexguided filteringadaptive gamma function
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