'\" te
.\" Copyright (c) 2007, Sun Microsystems, Inc.  All Rights Reserved 
.TH mlib_ImageColorRGB2CIEMono 3MLIB "2 Mar 2007" "SunOS 5.11" "mediaLib Library Functions"
.SH NAME
mlib_ImageColorRGB2CIEMono \- RGB to monochrome conversion
.SH SYNOPSIS
.LP
.nf
cc [ \fIflag\fR... ] \fIfile\fR... \fB-lmlib\fR [ \fIlibrary\fR... ]
#include <mlib.h>

\fBmlib_status\fR \fBmlib_ImageColorRGB2CIEMono\fR(\fBmlib_image *\fR\fIdst\fR,
     \fBconst mlib_image *\fR\fIsrc\fR);
.fi

.SH DESCRIPTION
.sp
.LP
The \fBmlib_ImageColorRGB2CIEMono()\fR function performs a conversion from a red/green/blue to a monochromatic image. The source image must be a three-channel image. The destination image must be a single-channel image.
.sp
.LP
It uses the following equation:
.sp
.in +2
.nf
dst[x][y][0] = 0.2125*src[x][y][0] +
               0.7154*src[x][y][1] +
               0.0721*src[x][y][2]
.fi
.in -2

.SH PARAMETERS
.sp
.LP
The function takes the following arguments:
.sp
.ne 2
.mk
.na
\fB\fIdst\fR\fR
.ad
.RS 7n
.rt  
Pointer to destination image.
.RE

.sp
.ne 2
.mk
.na
\fB\fIsrc\fR\fR
.ad
.RS 7n
.rt  
Pointer to source image.
.RE

.SH RETURN VALUES
.sp
.LP
The function returns \fBMLIB_SUCCESS\fR if successful. Otherwise it returns \fBMLIB_FAILURE\fR.
.SH ATTRIBUTES
.sp
.LP
See \fBattributes\fR(5) for descriptions of the following attributes:
.sp

.sp
.TS
tab() box;
cw(2.75i) |cw(2.75i) 
lw(2.75i) |lw(2.75i) 
.
ATTRIBUTE TYPEATTRIBUTE VALUE
_
Interface StabilityCommitted
_
MT-LevelMT-Safe
.TE

.SH SEE ALSO
.sp
.LP
\fBmlib_ImageColorRGB2CIEMono_Fp\fR(3MLIB), \fBmlib_ImageColorRGB2Mono\fR(3MLIB), \fBmlib_ImageColorRGB2Mono_Fp\fR(3MLIB), \fBattributes\fR(5)