Stitching three channels of an image

Question

Sneha 2017-12-12

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/372482-stitching-three-channels-of-an-image

回答： Rik 2017-12-12

i need to stitch the three components red blue and green of an rgb image P to form a gray image PS. At first i separate the three channels as Rp, Gp, and Bp using the code " Rp = image(:,:,1);". Now how can i stitch those three?

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Rik 2017-12-12

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/372482-stitching-three-channels-of-an-image#answer_295851

在 MATLAB Online 中打开

In Matlab (and some other languages) this is referred to as concatenation, for which you can use the function cat.

Rp=image(:,:,1);
Gp=image(:,:,2);
Bp=image(:,:,3);
%code that changes Rp, Gp and Bp
%
image2=cat(3,Rp,Gp,Bp);

alternatively:

Rp=image(:,:,1);
Gp=image(:,:,2);
Bp=image(:,:,3);
%code that changes Rp, Gp and Bp
%
image2=image;%create a copy
image2(:,:,1)=Rp;
image2(:,:,2)=Gp;
image2(:,:,3)=Bp;