1 #ifndef _IMAGES_IMAGES_H
2 #define _IMAGES_IMAGES_H
6 #include <magick/api.h>
10 #define IMAGE_REG_MAX 4
12 typedef u16 image_feature_t; /* 8 or 16 bits precision */
14 /* K-dimensional feature vector */
16 image_feature_t f[IMAGE_VEC_K];
19 /* K-dimensional interval */
21 struct image_vector vec[2];
24 /* Fetures for image regions */
26 image_feature_t f[IMAGE_REG_K];
30 struct image_signature {
31 struct image_vector vec; /* Combination of all regions... simplier signature */
32 image_feature_t len; /* Number of regions */
33 struct image_region reg[IMAGE_REG_MAX];/* Feature vector for every region */
36 /* Similarity search tree... will be changed */
38 uns count; /* Number of images in the tree */
39 uns depth; /* Tree depth */
40 struct image_bbox bbox; /* Bounding box containing all the */
41 struct image_node *nodes; /* Internal nodes */
42 struct image_leaf *leaves; /* Leaves */
45 /* Internal node in the search tree */
46 #define IMAGE_NODE_LEAF 0x80000000 /* Node contains pointer to leaves array */
47 #define IMAGE_NODE_DIM 0xff /* Split dimension */
52 /* Leaves in the search tree */
53 #define IMAGE_LEAF_LAST 0x80000000 /* Last entry in the list */
54 #define IMAGE_LEAF_BITS(i) (31 / IMAGE_VEC_K) /* Number of bits for relative position in i-th dimension */
56 u32 flags; /* Relative position in bbox and last node flag */
60 #define stk_print_image_vector(v) ({ struct image_vector *_v = v; \
61 byte *_s = (byte *) alloca(IMAGE_VEC_K * 6), *_p = _s + sprintf(_s, "%d", _v->f[0]); \
62 for (uns _i = 1; _i < IMAGE_VEC_K; _i++) _p += sprintf(_p, " %d", _v->f[_i]); _s; })
64 void compute_image_signature_prepare(void);
65 void compute_image_signature_finish(void);
66 int compute_image_signature(void *data, uns len, struct image_signature *sig);