convert RGB to YCbCr

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Aseel H
Aseel H 2012-7-7
I need to get three channel(three matrix)= Y, Cb, Cr from convert color imag to ycbcr but: the follow function
RGB = imread(colorimage) ycbcr = rgb2ycbcr(RGB)
give alone one channel(luminance)
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Aseel H
Aseel H 2012-7-7
thanks, Anton
Aseel H
Aseel H 2012-7-8
can you tell me, how convert RGB to YCbCr integer to integer rgb2ycbcr() give float values.

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Image Analyst
Image Analyst 2012-7-8
编辑：Walter Roberson 2012-7-8
Does the information in the Help help you:
YCBCR = rgb2ycbcr(RGB) converts the truecolor image RGB to the equivalent image in the YCbCr color space. RGB must be a M-by-N-by-3 array.
If the input is uint8, YCBCR is uint8, where Y is in the range [16 235], and Cb and Cr are in the range [16 240]. If the input is a double, Y is in the range [16/255 235/255] and Cb and Cr are in the range [16/255 240/255]. If the input is uint16, Y is in the range [4112 60395] and Cb and Cr are in the range [4112 61680].

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