电子科发女学光电科学与工程学院 SCHOOL OF OPTOELECTRONIC SCIENCE AND ENGINEERING OF UESTC 3.1 Background Transforms intensity of an original image into intensity of an output image using a function: s=T(r) where r=input intensity and s output intensity s=T() s=T(r) a b so=T(ro) FIGURE 3.2 1q3 Intensity T(r) T(r) transformation functions. (a)Contrast- stretching yed function. (b)Thresholding function. k ro k Dark→Light Dark→LightTransforms intensity of an original image into intensity of an output image using a function: s T r = ( ) where r = input intensity and s = output intensity 3.1 Background