www.gusucode.com > 图像压缩编码码matlab实现 > 图像压缩编码码matlab实现/JSjpeg/exJPEG.m
clear all tic x = imread('lena512.bmp'); figure; subplot(121); imshow(x); y = jpegencode(x, 5); X = jpegdecode(y); subplot(122); imshow(X); %e = double(x) - double(X); %[m, n] = size(e); erms = erms(x, X) %sqrt(sum(e(:).^2)/(m*n)) cr = imageratio(x, y) toc