Need to Convert RGB color space to L*U*V* color space , Please tell am i correct with this code

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rky
rky 2014-6-22
评论： fawad khan 2018-7-16
%convert to RgbI image in RGB to XYZ
XYZTransformation = makecform('srgb2xyz');
XyzI = applycform(RgbI,XYZTransformation);
%seperate X,Y,Z
X = XyzI(:,:,1);
Y = XyzI(:,:,2);
Z = XyzI(:,:,3);
figure, imshow(X) , title('X');
figure, imshow(Y) , title('Y');
figure, imshow(Z) , title('Z');
xyz = cat(3, X,Y,Z);
figure, imshow(xyz) , title('xyz');
%convert to XYZ
labTransformation = makecform('xyz2uvl');
luvI = applycform(xyz,labTransformation);
%seperate X,Y,Z
u = luvI(:,:,1);
v = luvI(:,:,2);
l = luvI(:,:,3);
figure, imshow(l) , title('l');
figure, imshow(u) , title('u');
figure, imshow(v) , title('v');

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Image Analyst
Image Analyst 2014-6-22
Looks right to me. Just realize that any lab or luv or any other colorspace values you get from "book formulas" are not going to be the same as the "true" values you'd get from a spectrophotometer or spectroradiometer. This is because your system is not calibrated and it assumes the values are sRGB which is not true.
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