Assignment:

Image Processing (python)

Derive piecewise transformation equations s = f(r) for the following piecewise linear transformation between input gray r and output gray s, where r is intensity of input image and s is the intensity of output image

r-> s = (10->0, 30->20, 95->255)

r ≥ s = 10≥0, 30 ≥ 20, 95 ≥ 255)

Write a method contStretching (r1,s1,r2,s2,r3,s3 ) given three points in r-s plane by  intensity transformation as  given below using piecewise linear transform where r is input intensity and s is output intensity.         

Use the following image for showing the results (Show the program code and the Screenshots for the result in word file).