Content-type: text/html Man page of mlib_ImageColorYCC2RGB

mlib_ImageColorYCC2RGB

Section: mediaLib Library Functions (3MLIB)
Updated: 2 Mar 2007
Index Return to Main Contents
 

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 TYPEATTRIBUTE VALUE

Interface StabilityCommitted

MT-Level

 

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)


 

Index

NAME
SYNOPSIS
DESCRIPTION
PARAMETERS
RETURN VALUES
ATTRIBUTES
SEE ALSO

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Time: 02:38:06 GMT, October 02, 2010