1mlib_ImageColorRGB2YCC_Fp(3mMeLdIiBa)Lib Library Funcmtliiobn_sImageColorRGB2YCC_Fp(3MLIB)
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NAME

6       mlib_ImageColorRGB2YCC_Fp - RGB to YCC color conversion
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SYNOPSIS

9       cc [ flag... ] file... -lmlib [ library... ]
10       #include <mlib.h>
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12       mlib_status mlib_ImageColorRGB2YCC_Fp(mlib_image *dst,
13            const mlib_image *src);
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DESCRIPTION

17       The mlib_ImageColorRGB2YCC_Fp() function performs a color space conver‐
18       sion from computer R'G'B' to ITU-R Rec.601 Y'CbCr.
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21       The source and destination images must be three-channel images.
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24       It uses the following equation:
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26         |Y'|   |cmat[0] cmat[1] cmat[2]|   |R'|   |offset[0]|
27         |Cb| = |cmat[3] cmat[4] cmat[5]| * |G'| + |offset[1]|
28         |Cr|   |cmat[6] cmat[7] cmat[8]|   |B'|   |offset[2]|
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32       where
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34         cmat[] = { 65.738/256, 129.057/256,  25.064/256,
35                   -37.945/256, -74.494/256, 112.439/256,
36                   112.439/256, -94.154/256, -18.285/256 };
37         offset[] = { 16, 128, 128 };
38         src[x][y] = { R', G', B' };
39         dst[x][y] = { Y', Cb, Cr };
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PARAMETERS

43       The function takes the following arguments:
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45       dst    Pointer to destination image.
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48       src    Pointer to source image.
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RETURN VALUES

52       The function returns MLIB_SUCCESS if successful. Otherwise  it  returns
53       MLIB_FAILURE.
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ATTRIBUTES

56       See attributes(5) for descriptions of the following attributes:
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61       ┌─────────────────────────────┬─────────────────────────────┐
62       │      ATTRIBUTE TYPE         │      ATTRIBUTE VALUE        │
63       ├─────────────────────────────┼─────────────────────────────┤
64       │Interface Stability          │Committed                    │
65       ├─────────────────────────────┼─────────────────────────────┤
66       │MT-Level                     │MT-Safe                      │
67       └─────────────────────────────┴─────────────────────────────┘
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SEE ALSO

70       mlib_ImageColorConvert2(3MLIB),      mlib_ImageColorConvert2_Fp(3MLIB),
71       mlib_ImageColorRGB2YCC(3MLIB),           mlib_ImageColorXYZ2RGB(3MLIB),
72       mlib_ImageColorXYZ2RGB_Fp(3MLIB),        mlib_ImageColorYCC2RGB(3MLIB),
73       mlib_ImageColorYCC2RGB_Fp(3MLIB), attributes(5)
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77SunOS 5.11                        2 Mar 2007  mlib_ImageColorRGB2YCC_Fp(3MLIB)
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