matlab对比度增强代码(共1页).docx

clcclearA=imread(C:UsersDesktop3.jpg);f0=0;f1=80;f2=180;f3=255;y0=0;y1=20;y2=240;y3=255;I=double(A);m,n,o=size(A)for x=1:m for y=1:n Q(x,y)=0; if I(x,y)=80)&(I(x,y)180) Q(x,y)=I(x,y)*2.2-156; else Q(x,y)=I(x,y)*0.2+204; end endendP=mat2gray(Q);subplot(2,2,1);subimage(A);title(原图);subplot(2,2,2);subimage(P);title(对比度增强);subplot(2,2,3);plot(f0,f1,f2,f3,y0,y1,y