9. matlab图像处理基础——JPEG压缩+类型转换

%% JPEG压缩
I = imread(‘cameraman.tif‘);
% imshow(I);
imwrite(I,‘test.jpg‘,‘quality‘,10);
J = imread(‘test.jpg‘);
subplot(1,2,1),imshow(I);
subplot(1,2,2),imshow(J);

%% RGB转灰度
I = imread(‘coloredChips.png‘);
subplot(1,2,1),imshow(I);
J = rgb2gray(I);
subplot(1,2,2),imshow(J);

%% 灰度图像二值化
I = imread(‘cameraman.tif‘);
subplot(1,2,1),imshow(I);
J = imbinarize(I);
subplot(1,2,2),imshow(J);