'\" te
.\" Copyright (c) 2007, Sun Microsystems, Inc.  All Rights Reserved 
.TH mlib_ImageSConv7x7_Fp 3MLIB "2 Mar 2007" "SunOS 5.11" "mediaLib Library Functions"
.SH NAME
mlib_ImageSConv7x7_Fp \- separable 7x7 convolution
.SH SYNOPSIS
.LP
.nf
cc [ \fIflag\fR... ] \fIfile\fR... \fB-lmlib\fR [ \fIlibrary\fR... ]
#include <mlib.h>

\fBmlib_status\fR \fBmlib_ImageSConv7x7_Fp\fR(\fBmlib_image *\fR\fIdst\fR, \fBconst mlib_image *\fR\fIsrc\fR,
     \fBconst mlib_d64 *\fR\fIhkernel\fR, \fBconst mlib_d64 *\fR\fIvkernel\fR, \fBmlib_s32\fR \fIcmask\fR,
     \fBmlib_edge\fR \fIedge\fR);
.fi

.SH DESCRIPTION
.sp
.LP
The \fBmlib_ImageSConv7x7_Fp()\fR function performs a separable 7x7 convolution on the source image by using the user-supplied kernel.
.sp
.LP
It uses the following equation:
.sp
.in +2
.nf
               m-1-dm n-1-dn
dst[x][y][i] =  SUM    SUM  src[x+p][y+q][i]*h[p]*v[q]
               p=-dm  q=-dn
.fi
.in -2

.sp
.LP
where \fBm = 7, n = 7, dm = (m - 1)/2 = 3, dn = (n - 1)/2 = 3\fR.
.SH PARAMETERS
.sp
.LP
The function takes the following arguments:
.sp
.ne 2
.mk
.na
\fB\fIdst\fR\fR
.ad
.RS 11n
.rt  
Pointer to destination image.
.RE

.sp
.ne 2
.mk
.na
\fB\fIsrc\fR\fR
.ad
.RS 11n
.rt  
Pointer to source image.
.RE

.sp
.ne 2
.mk
.na
\fB\fIhkernel\fR\fR
.ad
.RS 11n
.rt  
Pointer to the horizontal kernel.
.RE

.sp
.ne 2
.mk
.na
\fB\fIvkernel\fR\fR
.ad
.RS 11n
.rt  
Pointer to the vertical kernel.
.RE

.sp
.ne 2
.mk
.na
\fB\fIcmask\fR\fR
.ad
.RS 11n
.rt  
Channel mask to indicate the channels to be convolved, each bit of which represents a channel in the image. The channels corresponding to 1 bits are those to be processed. For a single-channel image, the channel mask is ignored.
.RE

.sp
.ne 2
.mk
.na
\fB\fIedge\fR\fR
.ad
.RS 11n
.rt  
Type of edge condition. It can be one of the following:
.sp
.in +2
.nf
MLIB_EDGE_DST_NO_WRITE
MLIB_EDGE_DST_FILL_ZERO
MLIB_EDGE_DST_COPY_SRC
MLIB_EDGE_SRC_EXTEND
.fi
.in -2

.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_ImageConv2x2\fR(3MLIB), \fBmlib_ImageConv2x2_Fp\fR(3MLIB), \fBmlib_ImageConv2x2Index\fR(3MLIB), \fBmlib_ImageConv3x3\fR(3MLIB), \fBmlib_ImageConv3x3_Fp\fR(3MLIB), \fBmlib_ImageConv3x3Index\fR(3MLIB), \fBmlib_ImageConv4x4\fR(3MLIB), \fBmlib_ImageConv4x4_Fp\fR(3MLIB), \fBmlib_ImageConv4x4Index\fR(3MLIB), \fBmlib_ImageConv5x5\fR(3MLIB), \fBmlib_ImageConv5x5_Fp\fR(3MLIB), \fBmlib_ImageConv5x5Index\fR(3MLIB), \fBmlib_ImageConv7x7\fR(3MLIB), \fBmlib_ImageConv7x7_Fp\fR(3MLIB), \fBmlib_ImageConv7x7Index\fR(3MLIB), \fBmlib_ImageConvKernelConvert\fR(3MLIB), \fBmlib_ImageConvMxN\fR(3MLIB), \fBmlib_ImageConvMxN_Fp\fR(3MLIB), \fBmlib_ImageConvMxNIndex\fR(3MLIB), \fBmlib_ImageConvolveMxN\fR(3MLIB), \fBmlib_ImageConvolveMxN_Fp\fR(3MLIB), \fBmlib_ImageSConv3x3\fR(3MLIB), \fBmlib_ImageSConv3x3_Fp\fR(3MLIB), \fBmlib_ImageSConv5x5\fR(3MLIB), \fBmlib_ImageSConv5x5_Fp\fR(3MLIB), \fBmlib_ImageSConv7x7\fR(3MLIB), \fBmlib_ImageSConvKernelConvert\fR(3MLIB), \fBattributes\fR(5)