3 Image Enhancement 3.3.1 Histogram Equalization (HE) >What's histogram equalization Histogram of dark image A process that seek an intensity transform function s=T(r)so thati Histogram of light image the histogram of transformed image becomes flat. The advantages of HE Histogram of ky-contrast image Automatically and adaptly determine an optimal Histogram of high-contrast image transform function 第3章第6页 3 Image Enhancement 第3章 第6页 3.3.1 Histogram Equalization (HE) What’s histogram equalization ？ A process that seek an intensity transform function s=T(r) so that the histogram of transformed image becomes flat. The advantages of HE Automatically and adaptly determine an optimal transform function