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opencv/modules/imgproc/src/matchcontours.cpp at master · pythonmjs/opencv · GitHub
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/*
M///////////////////////////////////////////////////////////////////////////////////////
//
// IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
//
// By downloading, copying, installing or using the software you agree to this license.
// If you do not agree to this license, do not download, install,
// copy or use the software.
//
//
// Intel License Agreement
// For Open Source Computer Vision Library
//
// Copyright (C) 2000, Intel Corporation, all rights reserved.
// Third party copyrights are property of their respective owners.
//
// Redistribution and use in source and binary forms, with or without modification,
// are permitted provided that the following conditions are met:
//
// * Redistribution's of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
//
// * Redistribution's in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
//
// * The name of Intel Corporation may not be used to endorse or promote products
// derived from this software without specific prior written permission.
//
// This software is provided by the copyright holders and contributors "as is" and
// any express or implied warranties, including, but not limited to, the implied
// warranties of merchantability and fitness for a particular purpose are disclaimed.
// In no event shall the Intel Corporation or contributors be liable for any direct,
// indirect, incidental, special, exemplary, or consequential damages
// (including, but not limited to, procurement of substitute goods or services;
// loss of use, data, or profits; or business interruption) however caused
// and on any theory of liability, whether in contract, strict liability,
// or tort (including negligence or otherwise) arising in any way out of
// the use of this software, even if advised of the possibility of such damage.
//
//M
*/
#
include
"
precomp.hpp
"
double
cv::matchShapes
(InputArray contour1, InputArray contour2,
int
method,
double
)
{
CV_INSTRUMENT_REGION
()
double
ma[
7
], mb[
7
];
int
i, sma, smb;
double
eps =
1
.
e
-
5
;
double
mmm;
double
result =
0
;
bool
anyA =
false
, anyB =
false
;
HuMoments
(
moments
(contour1), ma );
HuMoments
(
moments
(contour2), mb );
switch
(method)
{
case
1
:
for
( i =
0
; i <
7
; i++ )
{
double
ama =
fabs
( ma[i] );
double
amb =
fabs
( mb[i] );
if
(ama >
0
)
anyA =
true
;
if
(amb >
0
)
anyB =
true
;
if
( ma[i] >
0
)
sma =
1
;
else
if
( ma[i] <
0
)
sma = -
1
;
else
sma =
0
;
if
( mb[i] >
0
)
smb =
1
;
else
if
( mb[i] <
0
)
smb = -
1
;
else
smb =
0
;
if
( ama > eps && amb > eps )
{
ama =
1
. / (sma *
log10
( ama ));
amb =
1
. / (smb *
log10
( amb ));
result +=
fabs
( -ama + amb );
}
}
break
;
case
2
:
for
( i =
0
; i <
7
; i++ )
{
double
ama =
fabs
( ma[i] );
double
amb =
fabs
( mb[i] );
if
(ama >
0
)
anyA =
true
;
if
(amb >
0
)
anyB =
true
;
if
( ma[i] >
0
)
sma =
1
;
else
if
( ma[i] <
0
)
sma = -
1
;
else
sma =
0
;
if
( mb[i] >
0
)
smb =
1
;
else
if
( mb[i] <
0
)
smb = -
1
;
else
smb =
0
;
if
( ama > eps && amb > eps )
{
ama = sma *
log10
( ama );
amb = smb *
log10
( amb );
result +=
fabs
( -ama + amb );
}
}
break
;
case
3
:
for
( i =
0
; i <
7
; i++ )
{
double
ama =
fabs
( ma[i] );
double
amb =
fabs
( mb[i] );
if
(ama >
0
)
anyA =
true
;
if
(amb >
0
)
anyB =
true
;
if
( ma[i] >
0
)
sma =
1
;
else
if
( ma[i] <
0
)
sma = -
1
;
else
sma =
0
;
if
( mb[i] >
0
)
smb =
1
;
else
if
( mb[i] <
0
)
smb = -
1
;
else
smb =
0
;
if
( ama > eps && amb > eps )
{
ama = sma *
log10
( ama );
amb = smb *
log10
( amb );
mmm =
fabs
( (ama - amb) / ama );
if
( result < mmm )
result = mmm;
}
}
break
;
default
:
CV_Error
( CV_StsBadArg,
"
Unknown comparison method
"
);
}
//
If anyA and anyB are both true, the result is correct.
//
If anyA and anyB are both false, the distance is 0, perfect match.
//
If only one is true, then it's a false 0 and return large error.
if
(anyA != anyB)
result =
DBL_MAX
;
return
result;
}
CV_IMPL
double
cvMatchShapes
(
const
void
* _contour1,
const
void
* _contour2,
int
method,
double
parameter )
{
cv::AutoBuffer<
double
> abuf1, abuf2;
cv::Mat contour1 =
cv::cvarrToMat
(_contour1,
false
,
false
,
0
, &abuf1);
cv::Mat contour2 =
cv::cvarrToMat
(_contour2,
false
,
false
,
0
, &abuf2);
return
cv::matchShapes
(contour1, contour2, method, parameter);
}
/*
End of file.
*/
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