关键词: 非均匀光照, 亮度补偿, HIS色系, 改进的动态型高斯同态滤波

Abstract:

Aiming at eliminating the effect of unevenly illumination on image segmentation, a new method of illumination compensation based on dynamic Gauss type filter is proposed. The unevenly image is in the HSI color system.,then the illumination component is filtered in frequency domain, and the improved Gauss high pass filter transfer function is introduced to it, keep the hue and saturation constant, then got the uniform image. At last use the Otsu algorithm for uniform image which was enhanced before. The experimental results show that the proposed method can make the image brightness and brightness moderate, and the visual sense is good. The accuracy of segmentation is more ideal.

Key words: unevenly illumination, illumination compensation;HSI color system, improved dynamic Gauss type filter