mlib_ImageColorYCC2RGB (3MLIB)

Name

mlib_ImageColorYCC2RGB - YCC to RGB color conversion

Synopsis

cc [ flag... ] file... –lmlib [ library... ]
#include <mlib.h>

mlib_status mlib_ImageColorYCC2RGB(mlib_image *dst, const mlib_image *src);

Description

The mlib_ImageColorYCC2RGB() function performs a color space conversion from ITU-R Rec.601 Y'CbCr to computer R'G'B'.

The source and destination images must be three-channel images.

It uses the following equation:

|R'|   |cmat[0] cmat[1] cmat[2]|   |Y'|   |offset[0]|
|G'| = |cmat[3] cmat[4] cmat[5]| * |Cb| + |offset[1]|
|B'|   |cmat[6] cmat[7] cmat[8]|   |Cr|   |offset[2]|

where

cmat[] = { 298.082/256,    0.000/256,  408.583/256,
           298.082/256, -100.291/256, -208.120/256,
           298.082/256,  516.411/256,    0.000/256 };
offset[] = { -222.922, 135.575, -276.836 };
src[x][y] = { Y', Cb, Cr };
dst[x][y] = { R', G', B' };

Parameters

The function takes the following arguments:

dst

Pointer to destination image.

src

Pointer to source image.

Return Values

The function returns MLIB_SUCCESS if successful. Otherwise it returns MLIB_FAILURE.

Attributes

See attributes(5) for descriptions of the following attributes:

ATTRIBUTE TYPE ATTRIBUTE VALUE Interface Stability Committed MT-Level MT-Safe

See also

mlib_ImageColorConvert2(3MLIB), mlib_ImageColorConvert2_Fp(3MLIB), mlib_ImageColorRGB2XYZ(3MLIB), mlib_ImageColorRGB2XYZ_Fp(3MLIB), mlib_ImageColorRGB2YCC(3MLIB), mlib_ImageColorRGB2YCC_Fp(3MLIB), mlib_ImageColorYCC2RGB_Fp(3MLIB), attributes(5)