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
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
|
/* Create masks and filter with them.
*
* Copyright: N. Dessipris 1991,
* Written on: Nov 1991
* Updated on: Dec 1991
* 20/9/95 JC
* - modernised
* 22/3/10
* - gtkdoc
*/
/*
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., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301 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 <glib/gi18n-lib.h>
#include <stdio.h>
#include <math.h>
#include <stdarg.h>
#include <vips/vips.h>
#include <vips/vips7compat.h>
#include <vips/internal.h>
/* Make a mask image.
*/
static int
build_freq_mask( IMAGE *out, int xs, int ys, ImMaskType flag, va_list ap )
{
/* May be fewer than 4 args ... but extract them all anyway. Should be
* safe.
*/
double p0 = va_arg( ap, double );
double p1 = va_arg( ap, double );
double p2 = va_arg( ap, double );
double p3 = va_arg( ap, double );
double p4 = va_arg( ap, double );
VipsImage *t;
switch( flag ) {
case IM_MASK_IDEAL_HIGHPASS:
if( vips_mask_ideal( &t, xs, ys, p0,
NULL ) )
return( -1 );
break;
case IM_MASK_IDEAL_LOWPASS:
if( vips_mask_ideal( &t, xs, ys, p0,
"reject", TRUE,
NULL ) )
return( -1 );
break;
case IM_MASK_BUTTERWORTH_HIGHPASS:
if( vips_mask_butterworth( &t, xs, ys, p0, p1, p2,
NULL ) )
return( -1 );
break;
case IM_MASK_BUTTERWORTH_LOWPASS:
if( vips_mask_butterworth( &t, xs, ys, p0, p1, p2,
"reject", TRUE,
NULL ) )
return( -1 );
break;
case IM_MASK_GAUSS_HIGHPASS:
if( vips_mask_gaussian( &t, xs, ys, p0, p1,
NULL ) )
return( -1 );
break;
case IM_MASK_GAUSS_LOWPASS:
if( vips_mask_gaussian( &t, xs, ys, p0, p1,
"reject", TRUE,
NULL ) )
return( -1 );
break;
case IM_MASK_IDEAL_RINGPASS:
if( vips_mask_ideal_ring( &t, xs, ys, p0, p1,
NULL ) )
return( -1 );
break;
case IM_MASK_IDEAL_RINGREJECT:
if( vips_mask_ideal_ring( &t, xs, ys, p0, p1,
"reject", TRUE,
NULL ) )
return( -1 );
break;
case IM_MASK_BUTTERWORTH_RINGPASS:
if( vips_mask_butterworth_ring( &t, xs, ys, p0, p1, p2, p3,
NULL ) )
return( -1 );
break;
case IM_MASK_BUTTERWORTH_RINGREJECT:
if( vips_mask_butterworth_ring( &t, xs, ys, p0, p1, p2, p3,
"reject", TRUE,
NULL ) )
return( -1 );
break;
case IM_MASK_GAUSS_RINGPASS:
if( vips_mask_gaussian_ring( &t, xs, ys, p0, p1, p2,
NULL ) )
return( -1 );
break;
case IM_MASK_GAUSS_RINGREJECT:
if( vips_mask_gaussian_ring( &t, xs, ys, p0, p1, p2,
"reject", TRUE,
NULL ) )
return( -1 );
break;
case IM_MASK_FRACTAL_FLT:
if( vips_mask_fractal( &t, xs, ys, p0,
NULL ) )
return( -1 );
break;
case IM_MASK_IDEAL_BANDPASS:
if( vips_mask_ideal_band( &t, xs, ys, p0, p1, p2,
NULL ) )
return( -1 );
break;
case IM_MASK_IDEAL_BANDREJECT:
if( vips_mask_ideal_band( &t, xs, ys, p0, p1, p2,
"reject", TRUE,
NULL ) )
return( -1 );
break;
case IM_MASK_BUTTERWORTH_BANDPASS:
if( vips_mask_butterworth_band( &t, xs, ys, p0, p1, p2, p3, p4,
NULL ) )
return( -1 );
break;
case IM_MASK_BUTTERWORTH_BANDREJECT:
if( vips_mask_butterworth_band( &t, xs, ys, p0, p1, p2, p3, p4,
"reject", TRUE,
NULL ) )
return( -1 );
break;
case IM_MASK_GAUSS_BANDPASS:
if( vips_mask_gaussian_band( &t, xs, ys, p0, p1, p2, p3,
NULL ) )
return( -1 );
break;
case IM_MASK_GAUSS_BANDREJECT:
if( vips_mask_gaussian_band( &t, xs, ys, p0, p1, p2, p3,
"reject", TRUE,
NULL ) )
return( -1 );
break;
default:
im_error( "im_freq_mask", "%s", _( "unimplemented mask type" ) );
return( -1 );
}
if( im_copy( t, out ) ) {
g_object_unref( t );
return( -1 );
}
g_object_unref( t );
return( 0 );
}
int
im_flt_image_freq( IMAGE *in, IMAGE *out, ImMaskType flag, ... )
{
IMAGE *mask = im_open_local( out, "tempmask", "p" );
va_list ap;
if( !mask )
return( -1 );
/* Generate mask.
*/
va_start( ap, flag );
if( build_freq_mask( mask, in->Xsize, in->Ysize, flag, ap ) )
return( -1 );
va_end( ap );
if( im_freqflt( in, mask, out ) )
return( -1 );
return( 0 );
}
int
im_create_fmask( IMAGE *out, int xsize, int ysize, ImMaskType flag, ... )
{
va_list ap;
va_start( ap, flag );
if( build_freq_mask( out, xsize, ysize, flag, ap ) )
return( -1 );
va_end( ap );
return( 0 );
}
|
