101 lines
2.3 KiB
C
101 lines
2.3 KiB
C
/*
|
|
|
|
This file is part of VIPS.
|
|
|
|
VIPS is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU Lesser General Public License as published by
|
|
the Free Software Foundation; either version 2 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public License
|
|
along with this program; if not, write to the Free Software
|
|
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
|
|
*/
|
|
|
|
/*
|
|
|
|
These files are distributed with VIPS - http://www.vips.ecs.soton.ac.uk
|
|
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include <config.h>
|
|
#endif /*HAVE_CONFIG_H*/
|
|
#include <vips/intl.h>
|
|
|
|
#include <stdio.h>
|
|
#include <math.h>
|
|
|
|
#include <vips/vips.h>
|
|
|
|
#include "mosaic.h"
|
|
|
|
#ifdef WITH_DMALLOC
|
|
#include <dmalloc.h>
|
|
#endif /*WITH_DMALLOC*/
|
|
|
|
int
|
|
im__initialize( TIE_POINTS *points )
|
|
{
|
|
if( im__clinear( points ) ) {
|
|
/* im_clinear failed! Set some sensible fallback values.
|
|
*/
|
|
int i, j;
|
|
double xdelta, ydelta, max_cor;
|
|
double a1, a2;
|
|
|
|
int *xref = &points->x_reference[0];
|
|
int *yref = &points->y_reference[0];
|
|
int *xsec = &points->x_secondary[0];
|
|
int *ysec = &points->y_secondary[0];
|
|
|
|
double *corr = &points->correlation[0];
|
|
double *dx = &points->dx[0];
|
|
double *dy = &points->dy[0];
|
|
|
|
int npt = points->nopoints;
|
|
|
|
max_cor = 0.0;
|
|
for( i = 0; i < npt; i++ )
|
|
if( corr[i] > max_cor )
|
|
max_cor = corr[i];
|
|
|
|
max_cor = max_cor - 0.04;
|
|
xdelta = 0.0;
|
|
ydelta = 0.0;
|
|
j = 0;
|
|
for( i = 0; i < npt; i++ )
|
|
if( corr[i] >= max_cor ) {
|
|
xdelta += xsec[i] - xref[i];
|
|
ydelta += ysec[i] - yref[i];
|
|
++j;
|
|
}
|
|
|
|
xdelta = xdelta/j;
|
|
ydelta = ydelta/j;
|
|
for(i = 0; i < npt; i++ ) {
|
|
dx[i] = (xsec[i] - xref[i]) - xdelta;
|
|
dy[i] = (ysec[i] - yref[i]) - ydelta;
|
|
}
|
|
|
|
for( i = 0; i < npt; i++ ) {
|
|
a1 = dx[i];
|
|
a2 = dy[i];
|
|
points->deviation[i] = sqrt( a1*a1 + a2*a2 );
|
|
}
|
|
|
|
points->l_scale = 1.0;
|
|
points->l_angle = 0.0;
|
|
points->l_deltax = xdelta;
|
|
points->l_deltay = ydelta;
|
|
}
|
|
|
|
return( 0 );
|
|
}
|