Introduction - If you have any usage issues, please Google them yourself
ch5_1_1: image linear transformation (§ 5.1.1) ch5_1_2: piecewise linear image transform (§ 5.1.1) ch5_1_3: the use of logarithmic transformation of the form of dynamic range compression function (§ 5.1.1) ch5_1_4 : Image histogram equalization (§ 5.1.2) ch5_1_5: Histogram of the provisions of (§ 5.1.2)