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How to convert RGB to CIE Lab color space.

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Deepak Panda
Deepak Panda 2015-10-14
回答： Walter Roberson 2015-10-14
Is there any difference between these two procedures of rgb to lab conversion.
1. colorTransform = makecform('srgb2lab'); lab = applycform(rgbImage, colorTransform);
2. rgb2lab

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Walter Roberson
Walter Roberson 2015-10-14
makecform('srgb2lab') uses WhitePoint 'ICC' by default. rgb2lab() uses whitepoint 'D65' by default.
http://www.mathworks.com/help/images/ref/makecform.html
https://en.wikipedia.org/wiki/ICC_profile "a 16-bit fractional approximation of D50"

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