456 lines
11 KiB
C
456 lines
11 KiB
C
/* 1st order mosaic functions
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* 31/7/97 JC
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* - done!
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* 12/9/97 JC
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* - mods so global_balance() can work with 1st order mosaics
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* 27/12/99 JC
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* - now uses affine() stuff
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* - small tidies
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* 2/2/01 JC
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* - added tunable max blend width
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* 23/3/01 JC
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* - better mosaic1 calcs ... was a bit broken
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* 14/12/04
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* - works for LABQ as well
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*/
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/*
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This file is part of VIPS.
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VIPS is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/*
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These files are distributed with VIPS - http://www.vips.ecs.soton.ac.uk
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif /*HAVE_CONFIG_H*/
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#include <vips/intl.h>
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#include <stdio.h>
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#include <math.h>
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#include <vips/vips.h>
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#include <vips/buf.h>
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#include "mosaic.h"
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#include "merge.h"
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#ifdef WITH_DMALLOC
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#include <dmalloc.h>
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#endif /*WITH_DMALLOC*/
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/*
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#define DEBUG
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*/
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/* define this to get old not-really-working joiner.
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#define OLD
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*/
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/* Like im_similarity(), but return the transform we generated.
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*/
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static int
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apply_similarity( Transformation *trn, IMAGE *in, IMAGE *out,
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double a, double b, double dx, double dy )
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{
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trn->iarea.left = 0;
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trn->iarea.top = 0;
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trn->iarea.width = in->Xsize;
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trn->iarea.height = in->Ysize;
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trn->a = a;
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trn->b = -b;
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trn->c = b;
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trn->d = a;
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trn->dx = dx;
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trn->dy = dy;
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im__transform_set_area( trn );
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if( im__transform_calc_inverse( trn ) )
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return( -1 );
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if( im__affine( in, out, trn ) )
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return( -1 );
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return( 0 );
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}
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/* A join function ... either left-right or top-bottom rotscalemerge.
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*/
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typedef int (*joinfn)( IMAGE *, IMAGE *, IMAGE *,
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double, double, double, double, int );
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/* similarity+lrmerge.
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*/
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int
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im__lrmerge1( IMAGE *ref, IMAGE *sec, IMAGE *out,
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double a, double b, double dx, double dy, int mwidth )
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{
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Transformation trn;
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IMAGE *t1 = im_open_local( out, "im_lrmosaic1:1", "p" );
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im_buf_t buf;
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char text[1024];
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/* Scale, rotate and displace sec.
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*/
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if( !t1 || apply_similarity( &trn, sec, t1, a, b, dx, dy ) )
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return( -1 );
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/* And join to ref.
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*/
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if( im__lrmerge( ref, t1, out,
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-trn.oarea.left, -trn.oarea.top, mwidth ) )
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return( -1 );
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/* Note parameters in history file ... for global balance to pick up
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* later.
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*/
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im_buf_init_static( &buf, text, 1024 );
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im_buf_appendf( &buf, "#LRROTSCALE <%s> <%s> <%s> <",
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ref->filename, sec->filename, out->filename );
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im_buf_appendg( &buf, a );
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im_buf_appendf( &buf, "> <" );
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im_buf_appendg( &buf, b );
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im_buf_appendf( &buf, "> <" );
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im_buf_appendg( &buf, dx );
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im_buf_appendf( &buf, "> <" );
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im_buf_appendg( &buf, dy );
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im_buf_appendf( &buf, "> <%d>", mwidth );
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if( im_histlin( out, im_buf_all( &buf ) ) )
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return( -1 );
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return( 0 );
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}
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/* similarity+tbmerge.
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*/
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int
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im__tbmerge1( IMAGE *ref, IMAGE *sec, IMAGE *out,
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double a, double b, double dx, double dy, int mwidth )
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{
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Transformation trn;
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IMAGE *t1 = im_open_local( out, "im_lrmosaic1:2", "p" );
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im_buf_t buf;
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char text[1024];
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/* Scale, rotate and displace sec.
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*/
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if( !t1 || apply_similarity( &trn, sec, t1, a, b, dx, dy ) )
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return( -1 );
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/* And join to ref.
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*/
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if( im__tbmerge( ref, t1, out,
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-trn.oarea.left, -trn.oarea.top, mwidth ) )
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return( -1 );
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/* Note parameters in history file ... for global balance to pick up
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* later.
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*/
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im_buf_init_static( &buf, text, 1024 );
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im_buf_appendf( &buf, "#TBROTSCALE <%s> <%s> <%s> <",
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ref->filename, sec->filename, out->filename );
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im_buf_appendg( &buf, a );
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im_buf_appendf( &buf, "> <" );
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im_buf_appendg( &buf, b );
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im_buf_appendf( &buf, "> <" );
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im_buf_appendg( &buf, dx );
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im_buf_appendf( &buf, "> <" );
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im_buf_appendg( &buf, dy );
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im_buf_appendf( &buf, "> <%d>", mwidth );
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if( im_histlin( out, im_buf_all( &buf ) ) )
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return( -1 );
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return( 0 );
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}
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/* Join two images, using a pair of tie-points as parameters.
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*/
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static int
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rotjoin( IMAGE *ref, IMAGE *sec, IMAGE *out, joinfn jfn,
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int xr1, int yr1, int xs1, int ys1,
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int xr2, int yr2, int xs2, int ys2,
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int mwidth )
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{
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double a, b, dx, dy;
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/* Solve to get scale + rot + disp.
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*/
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if( im__coeff( xr1, yr1, xs1, ys1, xr2, yr2, xs2, ys2,
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&a, &b, &dx, &dy ) )
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return( -1 );
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/* Scale, rotate and displace sec.
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*/
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if( jfn( ref, sec, out, a, b, dx, dy, mwidth ) )
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return( -1 );
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return( 0 );
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}
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/* 1st order left-right merge.
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*/
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int
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im_lrmerge1( IMAGE *ref, IMAGE *sec, IMAGE *out,
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int xr1, int yr1, int xs1, int ys1,
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int xr2, int yr2, int xs2, int ys2,
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int mwidth )
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{
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return( rotjoin( ref, sec, out, im__lrmerge1,
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xr1, yr1, xs1, ys1, xr2, yr2, xs2, ys2, mwidth ) );
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}
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/* 1st order top-bottom merge.
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*/
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int
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im_tbmerge1( IMAGE *ref, IMAGE *sec, IMAGE *out,
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int xr1, int yr1, int xs1, int ys1,
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int xr2, int yr2, int xs2, int ys2,
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int mwidth )
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{
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return( rotjoin( ref, sec, out, im__tbmerge1,
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xr1, yr1, xs1, ys1, xr2, yr2, xs2, ys2, mwidth ) );
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}
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/* Like rotjoin, but do a search to refine the tie-points.
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*/
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static int
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rotjoin_search( IMAGE *ref, IMAGE *sec, IMAGE *out, joinfn jfn,
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int bandno,
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int xr1, int yr1, int xs1, int ys1,
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int xr2, int yr2, int xs2, int ys2,
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int halfcorrelation, int halfarea,
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int balancetype,
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int mwidth )
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{
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Transformation trn;
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double cor1, cor2;
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double a, b, dx, dy;
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double xs3, ys3;
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double xs4, ys4;
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int xs5, ys5;
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int xs6, ys6;
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double xs7, ys7;
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double xs8, ys8;
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/* Temps.
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*/
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IMAGE *t[3];
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if( im_open_local_array( out, t, 3, "rotjoin_search", "p" ) )
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return( -1 );
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/* Unpack LABQ to LABS for correlation.
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*/
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if( ref->Coding == IM_CODING_LABQ ) {
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if( im_LabQ2LabS( ref, t[0] ) )
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return( -1 );
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}
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else
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t[0] = ref;
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if( sec->Coding == IM_CODING_LABQ ) {
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if( im_LabQ2LabS( sec, t[1] ) )
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return( -1 );
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}
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else
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t[1] = sec;
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/* Solve to get scale + rot + disp.
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*/
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if( im__coeff( xr1, yr1, xs1, ys1, xr2, yr2, xs2, ys2,
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&a, &b, &dx, &dy ) ||
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apply_similarity( &trn, t[1], t[2], a, b, dx, dy ) )
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return( -1 );
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/* Map points on sec to rotated image.
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*/
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im__transform_forward( &trn, xs1, ys1, &xs3, &ys3 );
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im__transform_forward( &trn, xs2, ys2, &xs4, &ys4 );
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/* Refine tie-points on rotated image. Remember the clip
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* im__transform_set_area() has set, and move the sec tie-points
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* accordingly.
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*/
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if( im_correl( t[0], t[2], xr1, yr1,
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xs3 - trn.oarea.left, ys3 - trn.oarea.top,
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halfcorrelation, halfarea, &cor1, &xs5, &ys5 ) )
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return( -1 );
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if( im_correl( t[0], t[2], xr2, yr2,
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xs4 - trn.oarea.left, ys4 - trn.oarea.top,
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halfcorrelation, halfarea, &cor2, &xs6, &ys6 ) )
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return( -1 );
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#ifdef DEBUG
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printf( "rotjoin_search: nudged pair 1 from %d, %d to %d, %d\n",
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xs3 - trn.oarea.left, ys3 - trn.oarea.top,
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xs5, ys5 );
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printf( "rotjoin_search: nudged pair 2 from %d, %d to %d, %d\n",
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xs4 - trn.oarea.left, ys4 - trn.oarea.top,
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xs6, ys6 );
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#endif /*DEBUG*/
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/* Put the sec tie-points back into output space.
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*/
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xs5 += trn.oarea.left;
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ys5 += trn.oarea.top;
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xs6 += trn.oarea.left;
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ys6 += trn.oarea.top;
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/* ... and now back to input space again.
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*/
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im__transform_inverse( &trn, xs5, ys5, &xs7, &ys7 );
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im__transform_inverse( &trn, xs6, ys6, &xs8, &ys8 );
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/* Recalc the transform using the refined points.
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*/
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if( im__coeff( xr1, yr1, xs7, ys7, xr2, yr2, xs8, ys8,
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&a, &b, &dx, &dy ) )
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return( -1 );
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/* Scale and rotate final.
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*/
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if( jfn( ref, sec, out, a, b, dx, dy, mwidth ) )
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return( -1 );
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return( 0 );
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}
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/* 1st order lr mosaic.
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*/
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int
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im_lrmosaic1( IMAGE *ref, IMAGE *sec, IMAGE *out,
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int bandno,
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int xr1, int yr1, int xs1, int ys1,
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int xr2, int yr2, int xs2, int ys2,
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int halfcorrelation, int halfarea,
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int balancetype,
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int mwidth )
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{
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return( rotjoin_search( ref, sec, out, im__lrmerge1,
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bandno,
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xr1, yr1, xs1, ys1, xr2, yr2, xs2, ys2,
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halfcorrelation, halfarea, balancetype,
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mwidth ) );
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}
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/* 1st order tb mosaic.
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*/
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int
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im_tbmosaic1( IMAGE *ref, IMAGE *sec, IMAGE *out,
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int bandno,
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int xr1, int yr1, int xs1, int ys1,
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int xr2, int yr2, int xs2, int ys2,
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int halfcorrelation, int halfarea,
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int balancetype,
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int mwidth )
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{
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return( rotjoin_search( ref, sec, out, im__tbmerge1,
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bandno,
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xr1, yr1, xs1, ys1, xr2, yr2, xs2, ys2,
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halfcorrelation, halfarea, balancetype, mwidth ) );
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}
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#ifdef OLD
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/* 1st order mosaic using im__find_lroverlap() ... does not work too well :(
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* Look at im__find_lroverlap() for problem?
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*/
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static int
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old_lrmosaic1( IMAGE *ref, IMAGE *sec, IMAGE *out,
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int bandno,
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int xr1, int yr1, int xs1, int ys1,
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int xr2, int yr2, int xs2, int ys2,
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int halfcorrelation, int halfarea,
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int balancetype,
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int mwidth )
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{
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Transformation trn1, trn2;
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int dx0, dy0;
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double a, b, dx, dy;
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double a1, b1, dx1, dy1;
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double af, bf, dxf, dyf;
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int xpos, ypos;
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int xpos1, ypos1;
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/* Temps.
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*/
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IMAGE *t1 = im_open_local( out, "im_lrmosaic1:1", "p" );
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IMAGE *t2 = im_open_local( out, "im_lrmosaic1:2", "p" );
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IMAGE *dummy;
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if( !t1 || !t2 )
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return( -1 );
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/* Solve to get scale + rot + disp.
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*/
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if( im__coeff( xr1, yr1, xs1, ys1, xr2, yr2, xs2, ys2,
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&a, &b, &dx, &dy ) ||
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apply_similarity( &trn1, sec, t1, a, b, dx, dy ) )
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return( -1 );
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/* Correct tie-points. dummy is just a placeholder used to ensure that
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* memory used by the analysis phase is freed as soon as possible.
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*/
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if( !(dummy = im_open( "placeholder:1", "p" )) )
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return( -1 );
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if( im__find_lroverlap( ref, t1, dummy,
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bandno,
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-trn1.area.left, -trn1.area.top, 0, 0,
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halfcorrelation, halfarea,
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&dx0, &dy0,
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&a1, &b1, &dx1, &dy1 ) ) {
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im_close( dummy );
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return( -1 );
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}
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im_close( dummy );
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/* Now combine the two transformations to get a corrected transform.
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*/
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af = a1 * a - b1 * b;
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bf = a1 * b + b1 * a;
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dxf = a1 * dx - b1 * dy + dx1;
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dyf = b1 * dx + a1 * dy + dy1;
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printf( "transform was: a = %g, b = %g, dx = %g, dy = %g\n",
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a, b, dx, dy );
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printf( "correction: a = %g, b = %g, dx = %g, dy = %g\n",
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a1, b1, dx1, dy1 );
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printf( "final: a = %g, b = %g, dx = %g, dy = %g\n",
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af, bf, dxf, dyf );
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/* Scale and rotate final.
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*/
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if( apply_similarity( &trn2, sec, t2, af, bf, dxf, dyf ) )
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return( -1 );
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printf( "disp: trn1 left = %d, top = %d\n",
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trn1.area.left, trn1.area.top );
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printf( "disp: trn2 left = %d, top = %d\n",
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trn2.area.left, trn2.area.top );
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/* And join to ref.
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*/
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if( im_lrmerge( ref, t2, out,
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-trn2.area.left, -trn2.area.top, mwidth ) )
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return( -1 );
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return( 0 );
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}
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#endif /*OLD*/
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