matlab image processing
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How to merge the r,g and b components to get a single rgb image in matlab???
采纳的回答
Jan
2012-3-24
r = rand(20, 30);
g = rand(20, 30);
b = rand(20, 30);
rgb = cat(3, r, g, b);
2 个评论
parul
2012-3-27
Omkar Bhanap
2018-2-21
Is this command suitable for code generation purpose ??
更多回答（2 个）
Sivakumaran Chandrasekaran
2012-3-24
hi jan, r = rand(20, 30); g = rand(20, 30); b = rand(20, 30); rgb = [r, g, b]; imshow(rgb)
thats my code.. could you explain me whats the different between your code and mine. I am getting gray image as output. But,you are getting colored one. could you explain this technically. why i am not getting color image even though i concatenated those three basic colors.
Regards, Siva
2 个评论
Bjorn Gustavsson
2012-3-24
If you get pure gray it might be because your R G and B images are identical or close to identical?
Jan
2012-3-24
[r,g,b] is equivalent to cat(2, r, g, b): It concatenates along the 2nd dimension. Try it with smaller values to keep the overview:
r=[1,2;3,4]; g=r+5; b=g+5;
disp([r,g,b])
disp(cat(3, r, g, b))
The concatenation along the 2nd dimension creates a 2D matrix of type double, which is displayed as grey scale image.
Sivakumaran Chandrasekaran
2012-3-27
0 个投票
Thanks Jan and Bjorn
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