Single image defogging method based on sky region recognition

The invention discloses a single image defogging method based on sky region recognition. According to the method of the invention, by recognizing a sky region and a non-sky region in a foggy color image, a global atmospheric light value is estimated in the sky region, the non-sky region is subjected to defogging according to global atmospheric light value, defogged images of the sky region and thenon-sky region in the foggy color image are combined, and a total defogged image is obtained. According to the method, estimated atmospheric light in the sky area is identified, the accuracy of atmospheric light estimation is effectively improved, and thus the visual effect of the image after the defogging process is improved. According to the method, only the non-sky region is subjected to defogging, and a negative effect such as color shift, over-enhancement or halation in the sky region is avoided. 本发明公开了种基于天空区域识别的单幅图像去雾方法，本发明方法通过识别出有雾彩色图像中的天空区域和非天空区域，在天空区域中估算全局大气光值，根据全局大气光值对非天空区域进行去雾处理，结合有雾彩色图像中的天空区域与非天空区域的去雾图，获得