Haicon 解决光照不均匀

效果前后对比：

read_image (test, 'E:/xxx.jpg')
*通道分离
decompose3(test, image1, image2, image3)
mean_image (image1, Mean1, 9, 9)
emphasize (Mean1, em1, 5, 5, 1.5)
illuminate (em1, ImageI1, 20, 20, 0.55)
equ_histo_image (image2, ImageEquHisto2)
equ_histo_image (image3, ImageEquHisto3)
compose3 (ImageI1, ImageEquHisto2, ImageEquHisto3, MultiChannelImage)
dev_display(MultiChannelImage)