Study of Image Enhancement Algorithms in Coal Mine

For the problem of uneven illumination of the image in the underground of coal mine, we have carried on the deep research to the common several kinds of enhancement theory, which can improve the visual effect of the uneven illumination image. Then, we analyzed the relative parameters of spatial statistical properties of gray scale images. At last, we make an objective evaluation of the image quality. The theory analyses and experiments show that the method of histogram equalization image enhancement can achieve satisfactory results in dealing with the contrast of the image is not very low or intensity distribution is relatively dense.