Matlab彩色图像的rgb分量获取，彩色通道互换

短命女 2022-01-24 00:21 584阅读 0赞

**1.原图像**  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2htX18yMDE2_size_16_color_FFFFFF_t_70]  
**2.matlab代码，将图像的绿色和蓝色通道进行互换**

A=imread('花朵.jpg');
        [h,w,d]=size(A);
        R=A(:,:,1);  %获取红色分量
        G=A(:,:,2); %获取绿色分量
        B=A(:,:,3); %获取蓝色分量
         %绿蓝交换
        P1=A;
        P1(:,:,3)=G; 
        P1(:,:,2)=B;
        subplot(121),imshow(A),title('Original');
        subplot(122),imshow(P1),title('Green-Blue');

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2htX18yMDE2_size_16_color_FFFFFF_t_70 1]  
**3.Matlab代码，将图像的蓝色值加倍**

A=imread('花朵.jpg');
    [h,w,d]=size(A);
    R=A(:,:,1); 
    G=A(:,:,2);
    B=A(:,:,3);
    R1(:,:,1)=R;
    R1(:,:,2)=G;
    R1(:,:,3)=2*B; %图像的蓝色分量加倍
    subplot(121),imshow(A),title('Original');
    subplot(122),imshow(R1),title('DoubleBlue');

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2htX18yMDE2_size_16_color_FFFFFF_t_70 2]

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