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libvips/tools/mosaicing/mergeup.c

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/* Join together images
*
* mergeup x y file_name output_dir <root>.0x0.v <root>.0x1.v ...
*
* Where the image has been take with patches named as
*
* . .
* . .
* <root>.0x1.v <root>.1x1.v ..
* <root>.0x0.v <root>.1x0.v ..
*
*
* Tries to generate optimal join sequence. Does not require any intermidiate
* files for temporary storage.
* It uses partials on all IO by including tbmerge / lrmerge programs.
*
*
* Copyright (C) Feb./1995, Ahmed. Abbood
* National Gallery. London
*
*/
/*
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 <stdlib.h>
#include <stdarg.h>
#include <string.h>
#include <ctype.h>
#include <math.h>
#include <fcntl.h>
#include <vips/vips.h>
#define NUM_FILES 1000
#define MAXPOINTS 60
static int xoverlap;
static int yoverlap;
static int file_ptr = 0;
static IMAGE *in[ NUM_FILES ];
/* Strategy: build a tree describing the sequence of joins we want. Walk the
* tree assigning temporary file names, compile the tree into a linear
* sequence of join commands.
*/
/* Decoded file name info.
*/
static char *file_root = NULL;
static char *output_file = NULL;
static int width = 0; /* Number of frames across */
static int height = 0; /* Number of frames down */
static int file_list[ NUM_FILES ];
static int
im_phmerge( Rect *larea, Rect *rarea, Rect *outarea )
{
Rect overlap;
/* Compute overlap.
*/
im_rect_intersectrect( larea, rarea, &overlap );
outarea->width = rarea->left + rarea->width;
outarea->height = overlap.height;
outarea->top = overlap.top;
outarea->left = larea->left;
return( 0 );
}
static int
im_pvmerge( Rect *tarea, Rect *barea, Rect *outarea )
{
Rect overlap;
/* Compute overlap.
*/
im_rect_intersectrect( tarea, barea, &overlap );
outarea->width = overlap.width;
outarea->height = barea->top + barea->height ;
outarea->left = overlap.left;
outarea->top = tarea->top;
return( 0 );
}
static int
merge_analysis(int width,int height,IMAGE **in,int xoff,
int yoff,int *vxdisp,int *vydisp,int *hxdisp,
int *hydisp,Rect *hrect,Rect *vrect)
{
int i,j;
int curr_im,offset;
int curr_x, curr_y;
Rect larea, rarea, barea;
curr_im = -1;
curr_x = -1;
curr_y = -1;
for(i=0; i<=height; i++){
for(j=0; j<=width; j++){
++curr_im;
if( width == 0 ){
++curr_x;
hrect[curr_x].width = in[curr_im]->Xsize;
hrect[curr_x].height= in[curr_im]->Ysize;
hrect[curr_x].top = 0;
hrect[curr_x].left = 0;
}
else{
if( j == 0){
++curr_x;
/* Area occupied by left image.
*/
larea.left = 0;
larea.top = 0;
larea.height = in[curr_im]->Ysize;
larea.width = in[curr_im]->Xsize;
/* Area occupied by right image.
*/
if( in[curr_im]->Xsize < xoff )
offset = 0;
else
offset =xoff;
rarea.left = in[curr_im]->Xsize - (offset + hxdisp[curr_x]) ;
rarea.top = hydisp[curr_x];
rarea.width = in[curr_im+1]->Xsize;
rarea.height = in[curr_im+1]->Ysize;
im_phmerge( &larea, &rarea, &hrect[curr_x] );
}
else if( j < width ){
++curr_x;
/* Area occupied by right image.
*/
if( in[curr_im+1]->Xsize < xoff )
offset = 0;
else
offset =xoff;
rarea.left = hrect[curr_x -1].width - (offset + hxdisp[curr_x]) ;
rarea.top = hydisp[curr_x];
rarea.width = in[curr_im+1]->Xsize;
rarea.height = in[curr_im+1]->Ysize;
im_phmerge( &hrect[curr_x -1], &rarea, &hrect[curr_x] );
}
}
}
if( i > 0 ){
++curr_y;
/* Area occupied by bottom image in output.
*/
barea.left = vxdisp[curr_y];
barea.width = hrect[curr_x].width;
barea.height = hrect[curr_x].height;
if( in[curr_x - width]->Ysize < yoff )
offset = 0;
else
offset = yoff;
if( i == 1){
barea.top = hrect[curr_x - width].height - offset - vydisp[curr_y] ;
im_pvmerge( &hrect[curr_x - width], &barea, &vrect[curr_y] );
}
else{
barea.top = vrect[curr_y - 1].height - yoff - vydisp[curr_y] ;
im_pvmerge( &vrect[curr_y -1], &barea, &vrect[curr_y] );
}
}
}
return( 0 );
}
/* Find the root name of a file name. Return new, shorter, string.
*/
static char *
find_root( name )
char *name;
{ char *out = strdup( name );
char *p;
/* Chop off '.v'.
*/
if( !(p = strrchr( out, '.' )) ) {
im_errormsg( "Bad file name format '%s'", name );
free( out );
return( NULL );
}
*p = '\0';
/* Chop off nxn.
*/
if( !(p = strrchr( out, '.' )) ) {
im_errormsg( "Bad file name format '%s'", name );
free( out );
return( NULL );
}
*p = '\0';
return( out );
}
/* Find the x position of a file name (extract n from <root>.nxm.v).
*/
static int
find_x( name )
char *name;
{ int n;
char *p;
char *out = strdup( name );
/* Chop off '.v'.
*/
if( !(p = strrchr( out, '.' )) ) {
im_errormsg( "Bad file name format '%s'", name );
free( out );
return( -1 );
}
*p = '\0';
/* Find '.nxm'.
*/
if( !(p = strrchr( out, '.' )) ) {
im_errormsg( "Bad file name format '%s'", name );
free( out );
return( -1 );
}
/* Read out x posn.
*/
if( sscanf( p, ".%dx%*d", &n ) != 1 ) {
im_errormsg( "Bad file name format '%s'", name );
free( out );
return( -1 );
}
return( n );
}
/* Find the y position of a file name (extract m from <root>.nxm.v).
*/
static int
find_y( name )
char *name;
{ int m;
char *p;
char *out = strdup( name );
/* Chop off '.v'.
*/
if( !(p = strrchr( out, '.' )) ) {
im_errormsg( "Bad file name format '%s'", name );
free( out );
return( -1 );
}
*p = '\0';
/* Find '.nxm'.
*/
if( !(p = strrchr( out, '.' )) ) {
im_errormsg( "Bad file name format '%s'", name );
free( out );
return( -1 );
}
/* Read out y posn.
*/
if( sscanf( p, ".%*dx%d", &m ) != 1 ) {
im_errormsg( "Bad file name format '%s'", name );
free( out );
return( -1 );
}
free( out );
return( m );
}
/* Join two frames left-right. Have to open them and find their sizes.
*/
static int
join_leftright(IMAGE *left, IMAGE *right, IMAGE *out, int dx, int dy )
{
if (im_lrmerge(left, right, out, dx, dy, 20) == -1){
im_errormsg("mergeup: unable to run im_lrmerge");
return( -1 );
}
return( 0 );
}
/* Join two frames up-down. Have to open them and find their sizes.
*/
static int
join_updown( IMAGE *top, IMAGE *bottom, IMAGE *out, int dx, int dy )
{
if (im_tbmerge(top, bottom, out, dx, dy, 20) == -1){
im_errormsg("mergeup: unable to run im_tbmerge");
return( -1 );
}
return( 0 );
}
static int
merge_up( int width, int height, IMAGE **inp, IMAGE *outp, int xoff, int yoff,
int *hxdisp, int *hydisp, Rect *vrect )
{
int dx,dy,first_row;
int i, j, partial_no, in_no;
IMAGE **p_img;
char name[29];
int v_no, h_no;
p_img = (IMAGE **) malloc(1 + 3 * width * height * sizeof(IMAGE *));
if( p_img == NULL ){
im_errormsg("mergeup: allocation failure in mergeup");
return( -1 );
}
partial_no = 0;
v_no = 0;
h_no = 0;
in_no = 0;
first_row = 0;
if( (width == 0 ) && (height == 0 ) ){
im_errormsg("mergeup: Need more than one image");
return( -1 );
}
for(i=0; i<=height; i++){
for(j=0; j<=width; j++){
p_img[partial_no] = inp[in_no];
++partial_no;
if( j != 0 ){
im_snprintf( name, 29, "partial_img.%d.v",partial_no );
if( !( p_img[partial_no] = im_open( name, "p" )) ){
im_errormsg("mergeup: unable to open partial image");
free(p_img);
return( -1 );
}
++partial_no;
dy = hydisp[h_no ] ;
dx = -p_img[partial_no-3]->Xsize + hxdisp[h_no] + xoff ;
if( (height == 0) && ( j == width) )
join_leftright( p_img[partial_no-3],
p_img[partial_no-2],outp,dx,dy );
else
join_leftright( p_img[partial_no-3],
p_img[partial_no-2],p_img[partial_no-1],dx,dy );
++h_no;
}
++in_no;
}
if( first_row == 0)
first_row = partial_no - 1;
if( ( i > 0 ) || ( height == 0) ){
if( i < height ){
im_snprintf( name, 29, "partial_img.%d.v", partial_no );
if( !( p_img[partial_no] = im_open( name, "p" )) ){
im_errormsg("mergeup: unable to open partial image");
free(p_img);
return( -1 );
}
++partial_no;
dy = -( vrect[v_no].height - p_img[partial_no-2]->Ysize );
dx = vrect[v_no].left ;
++v_no;
join_updown( p_img[first_row],
p_img[partial_no-2], p_img[partial_no-1],dx,dy );
first_row = partial_no-1;
}
else{
dy = -( vrect[v_no].height - p_img[partial_no-1]->Ysize );
dx = vrect[v_no].left ;
join_updown( p_img[first_row], p_img[partial_no-1],outp,dx,dy );
}
}
}
return( 0 );
}
int
main( argc, argv )
int argc;
char **argv;
{
int i, n, j, k;
char name[ 1000 ];
FILE *fp;
char *r;
IMAGE *out;
int vxdisp[NUM_FILES + 1] ;
int vydisp[NUM_FILES + 1] ;
int hxdisp[NUM_FILES + 1] ;
int hydisp[NUM_FILES + 1] ;
Rect hrect[NUM_FILES];
Rect vrect[NUM_FILES];
if( im_init_world( argv[0] ) )
error_exit( "unable to start VIPS" );
/* Too many?
*/
if( argc > NUM_FILES + 1 )
error_exit( "Too many files to merge" );
for(i=0; i< NUM_FILES; i++)
file_list[i] = 0;
/* Too few?
*/
if( argc == 1 )
error_exit( "usage: xoverlap yoverlap file_name output_dir "
"<root>.0x0.v <root>.0x1.v ..." );
xoverlap = atoi(argv[1]);
yoverlap = atoi(argv[2]);
fp = fopen( argv[3] , "r" );
for( i = 5; i < argc; i++ ){
/* Find/check root.
*/
if( !file_root ) {
file_root = find_root( argv[i] );
if( !file_root )
error_exit( "error at file_root" );
}
else {
if( !(r = find_root( argv[i] )) )
error_exit( "Error in reading parameters" );
if( strcmp( r, file_root ) != 0 )
error_exit( "Not all roots identical!" );
}
/* Read out position.
*/
if( (n = find_x( argv[i] )) < 0 )
error_exit( "Error in reading file name" );
if( n > width - 1 )
width = n;
if( (n = find_y( argv[i] )) < 0 )
error_exit( "Error in reading file name" );
if( n > height - 1 )
height = n;
file_list[n] +=1;
}
/* Make output name. and store them in an array.
*/
im_snprintf( name, 1000, "%s/paint.hr.v", argv[4] );
if( !(out = im_open( name, "w" )) )
error_exit("unable to open file for output");
file_ptr =0;
for(i=height; i>=0; i--)
for(j=0; j<file_list[i]; j++){
im_snprintf( name, 1000, "%s.%dx%d.v", file_root,j,i );
output_file = strdup( name );
if( !(in[file_ptr] = im_open( output_file, "r" )) )
error_exit("unable to open %s for input",output_file);
++file_ptr;
}
k = 0;
for( i=0; i<height; i++ ){
for( j=0; j<width; j++ ){
if(fscanf(fp,"%d %d ", &hxdisp[k] , &hydisp[k])!=2)
error_exit("argh");
k++;
}
if(fscanf(fp,"\n")!=0)
error_exit("argh3");
}
for( i=0; i<height; i++ )
if(fscanf(fp,"%d %d\n", &vxdisp[i] , &vydisp[i])!=2)
error_exit("argh2");
merge_analysis(width,height,in,xoverlap,yoverlap,vxdisp,vydisp,hxdisp,hydisp,hrect,vrect);
merge_up( width, height, in, out, xoverlap, yoverlap, hxdisp, hydisp, vrect );
for(i=0; i<file_ptr; i++)
if( im_close(in[i]) == -1)
error_exit("unable to close partial file");
if( im_close(out) == -1)
error_exit("unable to close\n ");
return( 0 );
}
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