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
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
|
//
// Miscellaneous tests
//
// $Id: Test.C,v 4.1.2.1.2.1 1999/07/20 16:16:19 geert Exp $
//
// Copyright (C) 1996-1999 Department of Computer Science, K.U.Leuven, Belgium
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU 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 General Public License for more details.
//
// You should have received a copy of the GNU 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
//
#ifndef NULL
#define NULL 0
#endif
#include <stdio.h>
#include <stdlib.h>
#include <waili/Image.h>
#include <waili/Timer.h>
const char *ProgramName;
static void
#ifdef __GNUG__
__attribute__ ((noreturn))
#endif // __GNUG__
Usage(void)
{
Die("\nUsage: %s [options] filename\n\n"
"Valid options are:\n"
" -h, --help display this usage information\n"
" -p, --primal number number of primal vanishing moments (default: 2)\n"
" -d, --dual number number of dual vanishing moments (default: 2)\n"
" -l, --levels number of transform levels (default: -1 is max)\n"
"\n",
ProgramName);
}
static void GetRange(const Channel &ch, PixType &min, PixType &max)
{
u_int cols = ch.GetCols();
u_int rows = ch.GetRows();
if (!cols || !rows) {
min = 0;
max = 0;
} else {
min = max = ch(0, 0);
for (u_int r = 0; r < rows; r++)
for (u_int c = 0; c < cols; c++)
if (ch(c, r) < min)
min = ch(c, r);
else if (ch(c, r) > max)
max = ch(c, r);
}
}
int main(int argc, char *argv[])
{
const char *infile = NULL;
const char *outfile = NULL;
Image im1, *im2 = NULL;
u_int channels;
int maxlevels = -1;
int np = 2, nd = 2;
Timer timer;
ProgramName = argv[0];
while (--argc > 0) {
argv++;
if (!strcmp(argv[0], "-h") || !strcmp(argv[0], "--help"))
Usage();
else if (!strcmp(argv[0], "-p") || !strcmp(argv[0], "--primal"))
if (argc > 1) {
np = atoi(argv[1]);
argc--;
argv++;
} else
Usage();
else if (!strcmp(argv[0], "-d") || !strcmp(argv[0], "--dual"))
if (argc > 1) {
nd = atoi(argv[1]);
argc--;
argv++;
} else
Usage();
else if (!strcmp(argv[0], "-l") || !strcmp(argv[0], "--levels"))
if (argc > 1) {
maxlevels = atoi(argv[1]);
argc--;
argv++;
} else
Usage();
else if (!infile)
infile = argv[0];
else
Usage();
}
if (!infile)
Usage();
im1.Import(infile);
im2 = im1.Clone();
Wavelet *wavelet = Wavelet::CreateCDF(np, nd);
Wavelet_ID id = wavelet->GetID();
delete wavelet;
channels = im1.GetChannels();
printf("%dx%dx%d picture\n", im1.GetCols(0), im1.GetRows(0), channels);
TransformDescriptor transform[] = {
{ TT_ColsRows, id },
{ TT_ColsRows, id },
{ TT_ColsRows, id },
{ TT_ColsRows, id },
{ TT_ColsRows, id },
{ TT_ColsRows, id },
{ TT_ColsRows, id },
{ TT_ColsRows, id },
{ TT_ColsRows, id },
{ TT_ColsRows, id },
{ TT_ColsRows, id },
{ TT_ColsRows, id },
{ TT_ColsRows, id },
{ TT_ColsRows, id },
{ TT_ColsRows, id },
{ TT_ColsRows, id },
};
int transformdepth = sizeof(transform)/sizeof(*transform);
if (maxlevels < transformdepth)
transformdepth = maxlevels;
u_int depth;
puts("Forward FWT transform");
timer.Tic();
im1.Fwt(transform, transformdepth);
depth = im1[0]->GetDepth();
timer.Toc();
printf("Transform depth = %d\n", depth);
#if 1
if (transformdepth == 1) {
LChannel &channel = *(LChannel *)im1[0];
PixType min, max;
for (u_int i = SubBand_LL; i < SubBand_HH+1; i++) {
GetRange(*channel[(SubBand)i], min, max);
printf("%d range: (%d, %d)\n", i, min, max);
}
}
#endif
outfile = channels > 1 ? "out.ppm" : "out.pgm";
im1.Export(outfile);
puts("Inverse FWT transform");
timer.Tic();
im1.IFwt();
timer.Toc();
double maxerr = 0;
for (u_int ch = 0; ch < channels; ch++)
for (u_int r = 0; r < im1.GetRows(ch); r++)
for (u_int c = 0; c < im1.GetCols(ch); c++) {
double d = fabs(im1(c, r, ch)-(*im2)(c, r, ch));
if (d > maxerr)
maxerr = d;
}
printf("Maxerr = %f\n", maxerr);
outfile = channels > 1 ? "reco.ppm" : "reco.pgm";
im1.Export(outfile);
delete im2;
return(0);
}
|
