I want code to convert color image to rgb color spaces exactly
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venmal devi
le 2 Sep 2015
Commenté : Walter Roberson
le 2 Sep 2015
I want code to convert color image to rgb color spaces exactly
2 commentaires
Image Analyst
le 2 Sep 2015
What does that mean? Why is your color image not already RGB? What color space is it in, and how did you create it in that color space? http://www.mathworks.com/matlabcentral/answers/728-how-do-i-write-a-good-question-for-matlab-answers
Walter Roberson
le 2 Sep 2015
Modifié(e) : Walter Roberson
le 2 Sep 2015
In a duplicate Question, the user posted
X=imread('images.jpg'); R = X(:,:,1); image(R), colormap([[0:1/255:1]', zeros(256,1), zeros(256,1)]), colorbar;
%Green Component G = X(:,:,2); figure; image(G), colormap([zeros(256,1),[0:1/255:1]', zeros(256,1)]), colorbar;
%Blue component B = X(:,:,3); figure; image(B), colormap([zeros(256,1), zeros(256,1), [0:1/255:1]']), colorbar;
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Walter Roberson
le 2 Sep 2015
X = im2double(imread('images.jpg'));
R = X(:,:,1);
G = X(:,:,2);
B = X(:,:,3);
z = zeros(size(R));
Rimg = cat(3, R, z, z);
Gimg = cat(3, z, G, z);
Bimg = cat(3, z, z, B);
L256 = linspace(0,1,256).';
z256 = zeros(256,1);
mapR = [L256, z256, z256];
mapG = [z256, L256, z256];
mapB = [z256, z256, L256];
figure; image(Rimg); colormap(mapR); colorbar();
figure; image(Gimg); colormap(mapG); colorbar();
figure; image(Bimg); colormap(mapB); colorbar();
2 commentaires
Walter Roberson
le 2 Sep 2015
I do not know what you mean by a "black gray image" ? Please capture a portion of the screen and post the image.
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