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opencv/modules/legacy/src/morphcontours.cpp

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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"
#define PATH_TO_E 1
#define PATH_TO_SE 2
#define PATH_TO_S 3
#define K_S 2
#define E_S 2
#define C_S .01
#define K_Z 5000
#define K_NM 50000
#define K_B 40
#define NULL_EDGE 0.001f
#define inf DBL_MAX
typedef struct __CvWork
{
double w_east;
double w_southeast;
double w_south;
char path_e;
char path_se;
char path_s;
}_CvWork;
double _cvBendingWork( CvPoint2D32f* B0,
CvPoint2D32f* F0,
CvPoint2D32f* B1,
CvPoint2D32f* F1/*,
CvPoint* K */);
double _cvStretchingWork(CvPoint2D32f* P1,
CvPoint2D32f* P2);
void _cvWorkEast (int i, int j, _CvWork** W, CvPoint2D32f* edges1, CvPoint2D32f* edges2);
void _cvWorkSouthEast(int i, int j, _CvWork** W, CvPoint2D32f* edges1, CvPoint2D32f* edges2);
void _cvWorkSouth (int i, int j, _CvWork** W, CvPoint2D32f* edges1, CvPoint2D32f* edges2);
static CvPoint2D32f null_edge = {0,0};
double _cvStretchingWork(CvPoint2D32f* P1,
CvPoint2D32f* P2)
{
double L1,L2, L_min, dL;
L1 = sqrt( (double)P1->x*P1->x + P1->y*P1->y);
L2 = sqrt( (double)P2->x*P2->x + P2->y*P2->y);
L_min = MIN(L1, L2);
dL = fabs( L1 - L2 );
return K_S * pow( dL, E_S ) / ( L_min + C_S*dL );
}
////////////////////////////////////////////////////////////////////////////////////
double _cvBendingWork( CvPoint2D32f* B0,
CvPoint2D32f* F0,
CvPoint2D32f* B1,
CvPoint2D32f* F1/*,
CvPoint* K*/)
{
CvPoint2D32f Q( CvPoint2D32f q0, CvPoint2D32f q1, CvPoint2D32f q2, double t );
double angle( CvPoint2D32f A, CvPoint2D32f B );
CvPoint2D32f Q0, Q1, Q2;
CvPoint2D32f Q1_nm = { 0, 0 }, Q2_nm = { 0, 0 };
double d0, d1, d2, des, t_zero;
double k_zero, k_nonmon;
CvPoint2D32f center;
double check01, check02;
char check_origin;
double d_angle, d_nm_angle;
/*
if( (B0->x==0) && (B0->y==0) )
{
if( (F0->x==0) && (F0->y==0) )
{
B1->x = -B1->x;
B1->y = -B1->y;
d_angle = acos( (B1->x*F1->x + B1->y*F1->y)/sqrt( (B1->x*B1->x + B1->y*B1->y)*(F1->x*F1->x + F1->y*F1->y) ) );
d_angle = CV_PI - d_angle;
B1->x = -B1->x;
B1->y = -B1->y;
//return d_angle*K_B;
return 100;
}
K->x = -K->x;
K->y = -K->y;
B1->x = -B1->x;
B1->y = -B1->y;
d_angle = acos( (B1->x*F1->x + B1->y*F1->y)/sqrt( (B1->x*B1->x + B1->y*B1->y)*(F1->x*F1->x + F1->y*F1->y) ) );
d_angle = d_angle - acos( (F0->x*K->x + F0->y*K->y)/sqrt( (F0->x*F0->x + F0->y*F0->y)*(K->x*K->x + K->y*K->y) ) );
d_angle = d_angle - CV_PI*0.5;
d_angle = fabs(d_angle);
K->x = -K->x;
K->y = -K->y;
B1->x = -B1->x;
B1->y = -B1->y;
//return d_angle*K_B;
return 100;
}
if( (F0->x==0) && (F0->y==0) )
{
K->x = -K->x;
K->y = -K->y;
B1->x = -B1->x;
B1->y = -B1->y;
d_angle = acos( (B1->x*F1->x + B1->y*F1->y)/sqrt( (B1->x*B1->x + B1->y*B1->y)*(F1->x*F1->x + F1->y*F1->y) ) );
d_angle = d_angle - acos( (B0->x*K->x + B0->y*K->y)/sqrt( (B0->x*B0->x + B0->y*B0->y)*(K->x*K->x + K->y*K->y) ) );
d_angle = d_angle - CV_PI*0.5;
d_angle = fabs(d_angle);
K->x = -K->x;
K->y = -K->y;
B1->x = -B1->x;
B1->y = -B1->y;
//return d_angle*K_B;
return 100;
}
///////////////
if( (B1->x==0) && (B1->y==0) )
{
if( (F1->x==0) && (F1->y==0) )
{
B0->x = -B0->x;
B0->y = -B0->y;
d_angle = acos( (B0->x*F0->x + B0->y*F0->y)/sqrt( (B0->x*B0->x + B0->y*B0->y)*(F0->x*F0->x + F0->y*F0->y) ) );
d_angle = CV_PI - d_angle;
B0->x = -B0->x;
B0->y = -B0->y;
//return d_angle*K_B;
return 100;
}
K->x = -K->x;
K->y = -K->y;
B0->x = -B0->x;
B0->y = -B0->y;
d_angle = acos( (B0->x*F0->x + B0->y*F0->y)/sqrt( (B0->x*B0->x + B0->y*B0->y)*(F0->x*F0->x + F0->y*F0->y) ) );
d_angle = d_angle - acos( (F1->x*K->x + F1->y*K->y)/sqrt( (F1->x*F1->x + F1->y*F1->y)*(K->x*K->x + K->y*K->y) ) );
d_angle = d_angle - CV_PI*0.5;
d_angle = fabs(d_angle);
K->x = -K->x;
K->y = -K->y;
B0->x = -B0->x;
B0->y = -B0->y;
//return d_angle*K_B;
return 100;
}
if( (F1->x==0) && (F1->y==0) )
{
K->x = -K->x;
K->y = -K->y;
B0->x = -B0->x;
B0->y = -B0->y;
d_angle = acos( (B0->x*F0->x + B0->y*F0->y)/sqrt( (B0->x*B0->x + B0->y*B0->y)*(F0->x*F0->x + F0->y*F0->y) ) );
d_angle = d_angle - acos( (B1->x*K->x + B1->y*K->y)/sqrt( (B1->x*B1->x + B1->y*B1->y)*(K->x*K->x + K->y*K->y) ) );
d_angle = d_angle - CV_PI*0.5;
d_angle = fabs(d_angle);
K->x = -K->x;
K->y = -K->y;
B0->x = -B0->x;
B0->y = -B0->y;
//return d_angle*K_B;
return 100;
}
*/
/*
B0->x = -B0->x;
B0->y = -B0->y;
B1->x = -B1->x;
B1->y = -B1->y;
*/
Q0.x = F0->x * (-B0->x) + F0->y * (-B0->y);
Q0.y = F0->x * (-B0->y) - F0->y * (-B0->x);
Q1.x = 0.5f*( (F1->x * (-B0->x) + F1->y * (-B0->y)) + (F0->x * (-B1->x) + F0->y * (-B1->y)) );
Q1.y = 0.5f*( (F1->x * (-B0->y) - F1->y * (-B0->x)) + (F0->x * (-B1->y) - F0->y * (-B1->x)) );
Q2.x = F1->x * (-B1->x) + F1->y * (-B1->y);
Q2.y = F1->x * (-B1->y) - F1->y * (-B1->x);
d0 = Q0.x * Q1.y - Q0.y * Q1.x;
d1 = 0.5f*(Q0.x * Q2.y - Q0.y * Q2.x);
d2 = Q1.x * Q2.y - Q1.y * Q2.x;
// Check angles goes to zero
des = Q1.y*Q1.y - Q0.y*Q2.y;
k_zero = 0;
if( des >= 0 )
{
t_zero = ( Q0.y - Q1.y + sqrt(des) )/( Q0.y - 2*Q1.y + Q2.y );
if( (0 < t_zero) && (t_zero < 1) && ( Q(Q0, Q1, Q2, t_zero).x > 0 ) )
{
k_zero = inf;
}
t_zero = ( Q0.y - Q1.y - sqrt(des) )/( Q0.y - 2*Q1.y + Q2.y );
if( (0 < t_zero) && (t_zero < 1) && ( Q(Q0, Q1, Q2, t_zero).x > 0 ) )
{
k_zero = inf;
}
}
// Check nonmonotonic
des = d1*d1 - d0*d2;
k_nonmon = 0;
if( des >= 0 )
{
t_zero = ( d0 - d1 - sqrt(des) )/( d0 - 2*d1 + d2 );
if( (0 < t_zero) && (t_zero < 1) )
{
k_nonmon = 1;
Q1_nm = Q(Q0, Q1, Q2, t_zero);
}
t_zero = ( d0 - d1 + sqrt(des) )/( d0 - 2*d1 + d2 );
if( (0 < t_zero) && (t_zero < 1) )
{
k_nonmon += 2;
Q2_nm = Q(Q0, Q1, Q2, t_zero);
}
}
// Finde origin lie in Q0Q1Q2
check_origin = 1;
center.x = (Q0.x + Q1.x + Q2.x)/3;
center.y = (Q0.y + Q1.y + Q2.y)/3;
check01 = (center.x - Q0.x)*(Q1.y - Q0.y) + (center.y - Q0.y)*(Q1.x - Q0.x);
check02 = (-Q0.x)*(Q1.y - Q0.y) + (-Q0.y)*(Q1.x - Q0.x);
if( check01*check02 > 0 )
{
check01 = (center.x - Q1.x)*(Q2.y - Q1.y) + (center.y - Q1.y)*(Q2.x - Q1.x);
check02 = (-Q1.x)*(Q2.y - Q1.y) + (-Q1.y)*(Q2.x - Q1.x);
if( check01*check02 > 0 )
{
check01 = (center.x - Q2.x)*(Q0.y - Q2.y) + (center.y - Q2.y)*(Q0.x - Q2.x);
check02 = (-Q2.x)*(Q0.y - Q2.y) + (-Q2.y)*(Q0.x - Q2.x);
if( check01*check02 > 0 )
{
check_origin = 0;
}
}
}
// Calculate angle
d_nm_angle = 0;
d_angle = angle(Q0,Q2);
if( k_nonmon == 0 )
{
if( check_origin == 0 )
{
}
else
{
d_angle = 2*CV_PI - d_angle;
}
}
else
{
if( k_nonmon == 1 )
{
d_nm_angle = angle(Q0,Q1_nm);
if(d_nm_angle > d_angle)
{
d_nm_angle = d_nm_angle - d_angle;
}
}
if( k_nonmon == 2 )
{
d_nm_angle = angle(Q0,Q2_nm);
if(d_nm_angle > d_angle)
{
d_nm_angle = d_nm_angle - d_angle;
}
}
if( k_nonmon == 3 )
{
d_nm_angle = angle(Q0,Q1_nm);
if(d_nm_angle > d_angle)
{
d_nm_angle = d_nm_angle - d_angle;
d_nm_angle = d_nm_angle + angle(Q0, Q2_nm);
}
else
{
d_nm_angle = d_nm_angle + angle(Q2,Q2_nm);
}
}
}
/*
B0->x = -B0->x;
B0->y = -B0->y;
B1->x = -B1->x;
B1->y = -B1->y;
*/
return d_angle*K_B + d_nm_angle*K_NM + k_zero*K_Z;
//return 0;
}
/////////////////////////////////////////////////////////////////////////////////
void _cvWorkEast(int i, int j, _CvWork** W, CvPoint2D32f* edges1, CvPoint2D32f* edges2)
{
double w1,w2;
CvPoint2D32f small_edge;
//W[i,j].w_east
w1 = W[i-1][j].w_east /*+ _cvBendingWork( &edges1[i-2],
&edges1[i-1],
&null_edge ,
&null_edge,
NULL)*/;
small_edge.x = NULL_EDGE*edges1[i-1].x;
small_edge.y = NULL_EDGE*edges1[i-1].y;
w2 = W[i-1][j].w_southeast + _cvBendingWork(&edges1[i-2],
&edges1[i-1],
&edges2[j-1],
/*&null_edge*/&small_edge/*,
&edges2[j]*/);
if(w1<w2)
{
W[i][j].w_east = w1 + _cvStretchingWork( &edges1[i-1], &null_edge );
W[i][j].path_e = PATH_TO_E;
}
else
{
W[i][j].w_east = w2 + _cvStretchingWork( &edges1[i-1], &null_edge );
W[i][j].path_e = PATH_TO_SE;
}
}
////////////////////////////////////////////////////////////////////////////////////
void _cvWorkSouthEast(int i, int j, _CvWork** W, CvPoint2D32f* edges1, CvPoint2D32f* edges2)
{
double w1,w2,w3;
CvPoint2D32f small_edge;
//W[i,j].w_southeast
small_edge.x = NULL_EDGE*edges1[i-2].x;
small_edge.y = NULL_EDGE*edges1[i-2].y;
w1 = W[i-1][j-1].w_east + _cvBendingWork(&edges1[i-2],
&edges1[i-1],
/*&null_edge*/&small_edge,
&edges2[j-1]/*,
&edges2[j-2]*/);
w2 = W[i-1][j-1].w_southeast + _cvBendingWork( &edges1[i-2],
&edges1[i-1],
&edges2[j-2],
&edges2[j-1]/*,
NULL*/);
small_edge.x = NULL_EDGE*edges2[j-2].x;
small_edge.y = NULL_EDGE*edges2[j-2].y;
w3 = W[i-1][j-1].w_south + _cvBendingWork( /*&null_edge*/&small_edge,
&edges1[i-1],
&edges2[j-2],
&edges2[j-1]/*,
&edges1[i-2]*/);
if( w1<w2 )
{
if(w1<w3)
{
W[i][j].w_southeast = w1 + _cvStretchingWork( &edges1[i-1], &edges2[j-1] );
W[i][j].path_se = PATH_TO_E;
}
else
{
W[i][j].w_southeast = w3 + _cvStretchingWork( &edges1[i-1], &edges2[j-1] );
W[i][j].path_se = 3;
}
}
else
{
if( w2<w3)
{
W[i][j].w_southeast = w2 + _cvStretchingWork( &edges1[i-1], &edges2[j-1] );
W[i][j].path_se = PATH_TO_SE;
}
else
{
W[i][j].w_southeast = w3 + _cvStretchingWork( &edges1[i-1], &edges2[j-1] );
W[i][j].path_se = 3;
}
}
}
//////////////////////////////////////////////////////////////////////////////////////
void _cvWorkSouth(int i, int j, _CvWork** W, CvPoint2D32f* edges1, CvPoint2D32f* edges2)
{
double w1,w2;
CvPoint2D32f small_edge;
//W[i,j].w_south
small_edge.x = NULL_EDGE*edges2[j-1].x;
small_edge.y = NULL_EDGE*edges2[j-1].y;
w1 = W[i][j-1].w_southeast + _cvBendingWork(&edges1[i-1],
/*&null_edge*/&small_edge,
&edges2[j-2],
&edges2[j-1]/*,
&edges1[i]*/);
w2 = W[i][j-1].w_south /*+ _cvBendingWork( &null_edge ,
&null_edge,
&edges2[j-2],
&edges2[j-1],
NULL)*/;
if( w1<w2 )
{
W[i][j].w_south = w1 + _cvStretchingWork( &null_edge, &edges2[j-1] );
W[i][j].path_s = PATH_TO_SE;
}
else
{
W[i][j].w_south = w2 + _cvStretchingWork( &null_edge, &edges2[j-1] );
W[i][j].path_s = 3;
}
}
//===================================================
CvPoint2D32f Q(CvPoint2D32f q0,CvPoint2D32f q1,CvPoint2D32f q2,double t)
{
CvPoint2D32f q;
q.x = (float)(q0.x*(1-t)*(1-t) + 2*q1.x*t*(1-t) + q2.x*t*t);
q.y = (float)(q0.y*(1-t)*(1-t) + 2*q1.y*t*(1-t) + q2.y*t*t);
return q;
}
double angle(CvPoint2D32f A, CvPoint2D32f B)
{
return acos( (A.x*B.x + A.y*B.y)/sqrt( (double)(A.x*A.x + A.y*A.y)*(B.x*B.x + B.y*B.y) ) );
}
/***************************************************************************************\
*
* This function compute intermediate polygon between contour1 and contour2
*
* Correspondence between points of contours specify by corr
*
* param = [0,1]; 0 correspondence to contour1, 1 - contour2
*
\***************************************************************************************/
CvSeq* icvBlendContours(CvSeq* contour1,
CvSeq* contour2,
CvSeq* corr,
double param,
CvMemStorage* storage)
{
int j;
CvSeqWriter writer01;
CvSeqReader reader01;
int Ni,Nj; // size of contours
int i; // counter
CvPoint* point1; // array of first contour point
CvPoint* point2; // array of second contour point
CvPoint point_output; // intermediate storage of ouput point
int corr_point;
// Create output sequence.
CvSeq* output = cvCreateSeq(0,
sizeof(CvSeq),
sizeof(CvPoint),
storage );
// Find size of contours.
Ni = contour1->total + 1;
Nj = contour2->total + 1;
point1 = (CvPoint* )malloc( Ni*sizeof(CvPoint) );
point2 = (CvPoint* )malloc( Nj*sizeof(CvPoint) );
// Initialize arrays of point
cvCvtSeqToArray( contour1, point1, CV_WHOLE_SEQ );
cvCvtSeqToArray( contour2, point2, CV_WHOLE_SEQ );
// First and last point mast be equal.
point1[Ni-1] = point1[0];
point2[Nj-1] = point2[0];
// Initializes process of writing to sequence.
cvStartAppendToSeq( output, &writer01);
i = Ni-1; //correspondence to points of contour1
for( ; corr; corr = corr->h_next )
{
//Initializes process of sequential reading from sequence
cvStartReadSeq( corr, &reader01, 0 );
for(j=0; j < corr->total; j++)
{
// Read element from sequence.
CV_READ_SEQ_ELEM( corr_point, reader01 );
// Compute point of intermediate polygon.
point_output.x = cvRound(point1[i].x + param*( point2[corr_point].x - point1[i].x ));
point_output.y = cvRound(point1[i].y + param*( point2[corr_point].y - point1[i].y ));
// Write element to sequence.
CV_WRITE_SEQ_ELEM( point_output, writer01 );
}
i--;
}
// Updates sequence header.
cvFlushSeqWriter( &writer01 );
return output;
}
/**************************************************************************************************
*
*
*
*
*
*
*
*
*
*
**************************************************************************************************/
void icvCalcContoursCorrespondence(CvSeq* contour1,
CvSeq* contour2,
CvSeq** corr,
CvMemStorage* storage)
{
int i,j; // counter of cycles
int Ni,Nj; // size of contours
_CvWork** W; // graph for search minimum of work
CvPoint* point1; // array of first contour point
CvPoint* point2; // array of second contour point
CvPoint2D32f* edges1; // array of first contour edge
CvPoint2D32f* edges2; // array of second contour edge
//CvPoint null_edge = {0,0}; //
CvPoint2D32f small_edge;
//double inf; // infinity
CvSeq* corr01;
CvSeqWriter writer;
char path; //
// Find size of contours
Ni = contour1->total + 1;
Nj = contour2->total + 1;
// Create arrays
W = (_CvWork**)malloc(sizeof(_CvWork*)*Ni);
for(i=0; i<Ni; i++)
{
W[i] = (_CvWork*)malloc(sizeof(_CvWork)*Nj);
}
point1 = (CvPoint* )malloc( Ni*sizeof(CvPoint) );
point2 = (CvPoint* )malloc( Nj*sizeof(CvPoint) );
edges1 = (CvPoint2D32f* )malloc( (Ni-1)*sizeof(CvPoint2D32f) );
edges2 = (CvPoint2D32f* )malloc( (Nj-1)*sizeof(CvPoint2D32f) );
// Initialize arrays of point
cvCvtSeqToArray( contour1, point1, CV_WHOLE_SEQ );
cvCvtSeqToArray( contour2, point2, CV_WHOLE_SEQ );
point1[Ni-1] = point1[0];
point2[Nj-1] = point2[0];
for(i=0;i<Ni-1;i++)
{
edges1[i].x = (float)( point1[i+1].x - point1[i].x );
edges1[i].y = (float)( point1[i+1].y - point1[i].y );
};
for(i=0;i<Nj-1;i++)
{
edges2[i].x = (float)( point2[i+1].x - point2[i].x );
edges2[i].y = (float)( point2[i+1].y - point2[i].y );
};
// Find infinity constant
//inf=1;
/////////////
//Find min path in graph
/////////////
W[0][0].w_east = 0;
W[0][0].w_south = 0;
W[0][0].w_southeast = 0;
W[1][1].w_southeast = _cvStretchingWork( &edges1[0], &edges2[0] );
W[1][1].w_east = inf;
W[1][1].w_south = inf;
W[1][1].path_se = PATH_TO_SE;
W[0][1].w_south = _cvStretchingWork( &null_edge, &edges2[0] );
W[0][1].path_s = 3;
W[1][0].w_east = _cvStretchingWork( &edges2[0], &null_edge );
W[1][0].path_e = PATH_TO_E;
for( i=1; i<Ni; i++ )
{
W[i][0].w_south = inf;
W[i][0].w_southeast = inf;
}
for(j=1; j<Nj; j++)
{
W[0][j].w_east = inf;
W[0][j].w_southeast = inf;
}
for(i=2; i<Ni; i++)
{
j=0;/////////
W[i][j].w_east = W[i-1][j].w_east;
W[i][j].w_east = W[i][j].w_east /*+
_cvBendingWork( &edges1[i-2], &edges1[i-1], &null_edge, &null_edge, NULL )*/;
W[i][j].w_east = W[i][j].w_east + _cvStretchingWork( &edges2[i-1], &null_edge );
W[i][j].path_e = PATH_TO_E;
j=1;//////////
W[i][j].w_south = inf;
_cvWorkEast (i, j, W, edges1, edges2);
W[i][j].w_southeast = W[i-1][j-1].w_east;
W[i][j].w_southeast = W[i][j].w_southeast + _cvStretchingWork( &edges1[i-1], &edges2[j-1] );
small_edge.x = NULL_EDGE*edges1[i-2].x;
small_edge.y = NULL_EDGE*edges1[i-2].y;
W[i][j].w_southeast = W[i][j].w_southeast +
_cvBendingWork( &edges1[i-2], &edges1[i-1], /*&null_edge*/&small_edge, &edges2[j-1]/*, &edges2[Nj-2]*/);
W[i][j].path_se = PATH_TO_E;
}
for(j=2; j<Nj; j++)
{
i=0;//////////
W[i][j].w_south = W[i][j-1].w_south;
W[i][j].w_south = W[i][j].w_south + _cvStretchingWork( &null_edge, &edges2[j-1] );
W[i][j].w_south = W[i][j].w_south /*+
_cvBendingWork( &null_edge, &null_edge, &edges2[j-2], &edges2[j-1], NULL )*/;
W[i][j].path_s = 3;
i=1;///////////
W[i][j].w_east= inf;
_cvWorkSouth(i, j, W, edges1, edges2);
W[i][j].w_southeast = W[i-1][j-1].w_south;
W[i][j].w_southeast = W[i][j].w_southeast + _cvStretchingWork( &edges1[i-1], &edges2[j-1] );
small_edge.x = NULL_EDGE*edges2[j-2].x;
small_edge.y = NULL_EDGE*edges2[j-2].y;
W[i][j].w_southeast = W[i][j].w_southeast +
_cvBendingWork( /*&null_edge*/&small_edge, &edges1[i-1], &edges2[j-2], &edges2[j-1]/*, &edges1[Ni-2]*/);
W[i][j].path_se = 3;
}
for(i=2; i<Ni; i++)
for(j=2; j<Nj; j++)
{
_cvWorkEast (i, j, W, edges1, edges2);
_cvWorkSouthEast(i, j, W, edges1, edges2);
_cvWorkSouth (i, j, W, edges1, edges2);
}
i=Ni-1;j=Nj-1;
*corr = cvCreateSeq(0,
sizeof(CvSeq),
sizeof(int),
storage );
corr01 = *corr;
cvStartAppendToSeq( corr01, &writer );
if( W[i][j].w_east > W[i][j].w_southeast )
{
if( W[i][j].w_southeast > W[i][j].w_south )
{
path = 3;
}
else
{
path = PATH_TO_SE;
}
}
else
{
if( W[i][j].w_east < W[i][j].w_south )
{
path = PATH_TO_E;
}
else
{
path = 3;
}
}
do
{
CV_WRITE_SEQ_ELEM( j, writer );
switch( path )
{
case PATH_TO_E:
path = W[i][j].path_e;
i--;
cvFlushSeqWriter( &writer );
corr01->h_next = cvCreateSeq( 0,
sizeof(CvSeq),
sizeof(int),
storage );
corr01 = corr01->h_next;
cvStartAppendToSeq( corr01, &writer );
break;
case PATH_TO_SE:
path = W[i][j].path_se;
j--; i--;
cvFlushSeqWriter( &writer );
corr01->h_next = cvCreateSeq( 0,
sizeof(CvSeq),
sizeof(int),
storage );
corr01 = corr01->h_next;
cvStartAppendToSeq( corr01, &writer );
break;
case 3:
path = W[i][j].path_s;
j--;
break;
}
} while( (i>=0) && (j>=0) );
cvFlushSeqWriter( &writer );
// Free memory
for(i=1;i<Ni;i++)
{
free(W[i]);
}
free(W);
free(point1);
free(point2);
free(edges1);
free(edges2);
}