1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
|
#include <gdk-pixbuf/gdk-pixbuf.h>
#include <gtk/gtk.h>
//#include <math.h>
#include <stdlib.h>
#include <cstring>
#define DEBUG
#include "fourier.hh"
#include "fourier.cc"
#include "stdio.h"
void help()
{ printf("Usage: testfourier -s|-c si sx sy di dx di [oi]\n\
si sx sy = reference image, position x , y\n\
di dx dy = editing image , position x,y\n\
oi = output of editing image with patch translated\n\
from source to destination\n\n\
Will output the new suggested value for dx,dy\n"); }
void test_fft()
{
for (int c=0;c<3;c++) {
F_T
*srcf = prealloc_F_T + size*size*c,
*dstf = prealloc_F_T + size*size*6,
*cmpf = prealloc_F_T + size*size*( (c==0)?1:0);
for (int i=0; i < size ; i++) {
for (int j=0; j < size ; j++)
srcf[IND(i,j)]=drand48()*100+101;
}
fourier(srcf,dstf);
fourier_inv(dstf,cmpf);
for (int i=0; i < size ; i++) {
for (int j=0; j < size ; j++) {
g_assert( norm(cmpf[IND(i,j)] - srcf[IND(i,j)] ) <= 0.0001 );
}}
}
{
int n_channels=3;
F_T *src = prealloc_F_T;
double e = correlation(src,src,n_channels,0,0) ;
double f = ( energy(src,n_channels));
g_assert( ABS(1-e/f) < 0.0001 );
{
double dx = correlation_dx(src,src,n_channels,0,0) ,
dy = correlation_dy(src,src,n_channels,0,0) ;
g_assert(ABS(dx/e)<0.01);
g_assert(ABS(dy/e)<0.01);
}
{
double dx = correlation_dx(src,src,n_channels,0,0) ,
dy = correlation_dy(src,src,n_channels,0,0) ;
printf(" test random dx %g dy %g \n",dx/e,dy/e);
}
}
}
int main(int argc,char* argv[])
{
if(argc<7)
{ help() ; return -1 ; }
int cheat=0;
if(0==strcmp("-c",argv[1])) {
cheat=1;
} else if(0!=strcmp("-s",argv[1]))
{ help() ; return -1 ; }
argc--; argv++;
double sx=atof(argv[2]), sy=atof(argv[3]),
dx=atof(argv[5]),dy=atof(argv[6]) , tx,ty;
gtk_set_locale ();
gtk_init(&argc, &argv);
gdk_rgb_init();
fourier_init();
#if GTK_MAJOR_VERSION >= 2
#define ARG ,NULL
#endif
GdkPixbuf *src,*dst;
src=gdk_pixbuf_new_from_file(argv[1] ARG);
if(!src) { perror(argv[1]); exit(1);}
dst=gdk_pixbuf_new_from_file(argv[4] ARG);
if(!dst) { perror(argv[4]); exit(1);}
g_return_val_if_fail( (gdk_pixbuf_get_n_channels (src)) ==
(gdk_pixbuf_get_n_channels (dst)),1);
// testings of basic stuff
test_fft();
#if USE_WINDOW == 0
{
GdkPixbuf *pixbuf;
pixbuf=gdk_pixbuf_new_from_file(argv[1] ARG);
if(!pixbuf) { perror(argv[1]); exit(1);}
guint n_channels = gdk_pixbuf_get_n_channels (pixbuf);
int width = gdk_pixbuf_get_width (pixbuf);
int height = gdk_pixbuf_get_height (pixbuf);
int rowstride = gdk_pixbuf_get_rowstride (pixbuf);
F_T * srcf = prealloc_F_T;
fourier_image(src,srcf, (int)sx, (int)sy);
inv_fourier_image(srcf, pixbuf, (int)sx, (int)sy) ;
guchar *sp = gdk_pixbuf_get_pixels (src);
guchar *cp = gdk_pixbuf_get_pixels (pixbuf);
for (int c=0;c<3;c++) {
for (int i=0; i < height; i++) {
for (int j=0; j < width ; j++) {
int d=(i) * rowstride + (j) * n_channels;
int v = sp[d]-cp[d];
g_assert( ABS(v)==0) ;
}}}
}
#endif
//testing of translation detection
if(cheat) {
tx=dx; ty=dy;
} else
detect_translation(src,sx,sy, dst,dx,dy, &tx, &ty);
printf("tx %g ty %g\n",tx,ty);
if(argc>7)
{ dx=tx; dy=ty; double isx=floor(sx), isy=floor(sy),
idx=floor(dx), idy=floor(dy);
if (cheat)
{ isx=idx; isy=idy; }
double fsx=sx-isx , fsy=sy-isy , fdx=dx-idx , fdy=dy-idy;
double x = fdx-fsx, y = fdy-fsy;
F_T * srcf = prealloc_F_T;
fourier_image(src,srcf, (int)isx , (int)isy) ;
int n_channels =gdk_pixbuf_get_n_channels (src);
printf("delta x %g delta y %g\n",x,y);
for (int i=0; i < size ; i++) {
for (int j=0; j < size ; j++) {
F_T v=fourier_transl(i, j,x,y);
for (int c=0; c < n_channels;c++) {
F_T *s=srcf+c*size*size;
(s[IND(i,j)]) = s[IND(i,j)] * v;
}}}
inv_fourier_image(srcf, dst, (int)idx, (int)idy) ;
GError *error=NULL;gboolean result=TRUE;
result = gdk_pixbuf_save(dst,argv[7],"png",&error,NULL);
g_assert ((result && !error ) || (!result && error ));
if(error)
{g_warning((error)->message);g_error_free (error);}
}
return 0;
}
|
