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
|
/*
* image.c
*
* Handle images and image features
*
* (c) 2006-2010 Thomas White <taw@physics.org>
*
* Part of CrystFEL - crystallography with a FEL
*
*/
#include <stdlib.h>
#include <assert.h>
#include <math.h>
#include <stdio.h>
#include "image.h"
#include "utils.h"
struct _imagelist
{
int n_images;
struct image *images;
};
struct _imagefeaturelist
{
struct imagefeature *features;
int n_features;
};
int image_add(ImageList *list, struct image *image)
{
if ( list->images ) {
list->images = realloc(list->images,
(list->n_images+1)*sizeof(struct image));
} else {
assert(list->n_images == 0);
list->images = malloc(sizeof(struct image));
}
/* Copy the metadata */
list->images[list->n_images] = *image;
/* Fill out some extra fields */
list->images[list->n_images].features = NULL;
list->n_images++;
return list->n_images - 1;
}
ImageList *image_list_new()
{
ImageList *list;
list = malloc(sizeof(ImageList));
list->n_images = 0;
list->images = NULL;
return list;
}
void image_add_feature(ImageFeatureList *flist, double x, double y,
struct image *parent, double intensity, const char *name)
{
if ( flist->features ) {
flist->features = realloc(flist->features,
(flist->n_features+1)
*sizeof(struct imagefeature));
} else {
assert(flist->n_features == 0);
flist->features = malloc(sizeof(struct imagefeature));
}
flist->features[flist->n_features].x = x;
flist->features[flist->n_features].y = y;
flist->features[flist->n_features].intensity = intensity;
flist->features[flist->n_features].parent = parent;
flist->features[flist->n_features].partner = NULL;
flist->features[flist->n_features].partner_d = 0.0;
flist->features[flist->n_features].name = name;
flist->features[flist->n_features].valid = 1;
flist->n_features++;
}
ImageFeatureList *image_feature_list_new()
{
ImageFeatureList *flist;
flist = malloc(sizeof(ImageFeatureList));
flist->n_features = 0;
flist->features = NULL;
return flist;
}
void image_feature_list_free(ImageFeatureList *flist)
{
if ( !flist ) return;
if ( flist->features ) free(flist->features);
free(flist);
}
struct imagefeature *image_feature_closest(ImageFeatureList *flist,
double x, double y,
double *d, int *idx)
{
int i;
double dmin = +HUGE_VAL;
int closest = 0;
for ( i=0; i<flist->n_features; i++ ) {
double ds;
ds = distance(flist->features[i].x, flist->features[i].y, x, y);
if ( ds < dmin ) {
dmin = ds;
closest = i;
}
}
if ( dmin < +HUGE_VAL ) {
*d = dmin;
*idx = closest;
return &flist->features[closest];
}
*d = +INFINITY;
return NULL;
}
int image_feature_count(ImageFeatureList *flist)
{
if ( flist == NULL ) return 0;
return flist->n_features;
}
struct imagefeature *image_get_feature(ImageFeatureList *flist, int idx)
{
/* Sanity check */
if ( flist == NULL ) return NULL;
if ( idx > flist->n_features ) return NULL;
if ( flist->features[idx].valid == 0 ) return NULL;
return &flist->features[idx];
}
void image_remove_feature(ImageFeatureList *flist, int idx)
{
flist->features[idx].valid = 0;
}
|
