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RGB 的代码
example4_12.m
RGB=imread('hr.jpg');
YCbCr=rgb2ycbcr(RGB);
subplot(1,2,1);
subimage(RGB);
title('原图像');
subplot(1,2,2);
subplot(1,2,2);
subimage(YCbCr);
title('变换后的图像');
example4_10.m
RGB=imread('hr.jpg');
HSV=rgb2hsv(RGB);
subplot(1,2,1);
subimage(RGB);
title('原图像');
subplot(1,2,2);
subimage(HSV);
title('变换后的图像');
example4_11.m
RGB=imread('hr.jpg');
YIQ=rgb2ntsc(RGB);
I=YIQ(:,:,1);
subplot(1,2,1);
subimage(RGB);
title('原图像');
subplot(1,2,2);
subimage(I);
title('变换后的图像');
example3_3.m
RGB=imread('flowers.tif');
image(RGB)
example5_3.m
%顶点坐标为(40 , 50) , (40 , 250),(240,50)和(240,250)。
RGB=imread('flowers.tif');
imshow(RGB);
RGB2=imcrop(RGB,[40,50,200,200]);
figure,imshow(RGB2);
sumarize11_5_2a.m
%调入与显示RGB图像
RGB = imread('peppers.png');
isrgb(RGB);
figure(1);
imshow(RGB);
%RGB图转换为灰度图像
I = rgb2gray(RGB);
figure(2);
imshow(I);
colorbar('horiz');
isgray(I);
%边缘检测
ED = edge(I,'sobel',0
sumarize11_5_4b.m
%载入图像
RGB = imread('saturn.png');
%RGB转换为灰度图
I = rgb2gray(RGB);
%加入高斯白噪声
J = imnoise(I,'gaussian',0,0.005);
%采用自适应滤波
K = wiener2(J,[5 5]);
%显示原始图像、加入噪声的图像以及滤波后的噪声
imshow(I)
figure,imshow(J)
sumarize11_2_2cl.m
RGB = imread('saturn.png');
I = rgb2gray(RGB);
h = [1 2 1; 0 0 0; -1 -2 -1];
I2 = filter2(h,I);
imshow(I2,[]), colorbar
sumarize11_6_3.m
%载入图像
load trees
%RGB转换为灰度图
I = ind2gray(X,map);
imshow(I)
%指定特定区域,并进行填充
I2 = roifill;
imshow(I2)
sumarize11_4_2ars.m
%载入图像
RGB = imread('autumn.tif');
figure(1);
imshow(RGB);
%将真彩图转换为灰度图
I = rgb2gray(RGB);
figure(2);
imshow(I);
%进行余弦变换
J = dct2(I);
figure(3);
imshow(log(abs(J)),[]);
colormap(jet(64));
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