Self-adapting enhancement method of underwater degraded image

The invention discloses a self-adapting enhancement method of an underwater degraded image in the technical field of image processing. The method comprises the steps that a single underwater color image is collected, logarithm transformation is firstly carried out on an input image, then local contrast enhancement processing is carried out on the image obtained after logarithm transformation based on the human eye visual characteristic, and meanwhile illumination estimation is carried out on the image obtained after logarithm transformation through Gaussian homomorphic filtering with a weight; the image obtained after illumination estimation is subtracted by the image obtained after local contrast enhancement; finally, on the basis of analyzing all channel histograms of a deblurred image, color correction and restoration are carried out on the image obtained after multi-scale Retinex enhancement through a color gradation quantization algorithm of the histograms. Image burring caused by the water absorption and particle matter scattering function can be removed well, and the interference of water colors on the color of the image can be removed well.