2 # define MSG(x...) do{ line += sprintf(line, x); }while(0)
3 # define LINE do{ line = buf; msg(line, param); }while(0)
6 explain_signature(struct image_signature *sig, void (*msg)(byte *text, void *param), void *param)
8 byte buf[1024], *line = buf;
9 MSG("signature: flags=0x%x df=%u dh=%u f=(%u", sig->flags, sig->df, sig->dh, sig->vec.f[0]);
10 for (uns i = 1; i < IMAGE_VEC_F; i++)
11 MSG(" %u", sig->vec.f[i]);
14 for (uns j = 0; j < sig->len; j++)
16 struct image_region *reg = sig->reg + j;
17 MSG("region %u: wa=%u wb=%u f=(%u", j, reg->wa, reg->wb, reg->f[0]);
18 for (uns i = 1; i < IMAGE_VEC_F; i++)
19 MSG(" %u", reg->f[i]);
20 MSG(") h=(%u", reg->h[0]);
21 for (uns i = 1; i < IMAGE_REG_H; i++)
22 MSG(" %u", reg->h[i]);
29 # define MSG(x...) do{}while(0)
30 # define LINE do{}while(0)
33 #define MSGL(x...) do{ MSG(x); LINE; }while(0)
37 image_signatures_dist_integrated(struct image_signature *sig1, struct image_signature *sig2)
40 image_signatures_dist_integrated_explain(struct image_signature *sig1, struct image_signature *sig2, void (*msg)(byte *text, void *param), void *param)
43 uns dist[IMAGE_REG_MAX * IMAGE_REG_MAX], p[IMAGE_REG_MAX], q[IMAGE_REG_MAX];
44 uns n, i, j, k, l, s, d;
45 struct image_region *reg1, *reg2;
47 byte buf[1024], *line = buf;
48 MSGL("Integrated matching");
49 explain_signature(sig1, msg, param);
50 explain_signature(sig2, msg, param);
53 /* FIXME: do not mux textured and non-textured images (should be split in clusters tree) */
54 if ((sig1->flags ^ sig2->flags) & IMAGE_SIG_TEXTURED)
56 MSGL("Textured vs non-textured");
60 /* Compute distance matrix */
62 MSGL("Distance matrix:");
63 /* ... for non-textured images */
64 if (!((sig1->flags | sig2->flags) & IMAGE_SIG_TEXTURED))
65 for (j = 0, reg2 = sig2->reg; j < sig2->len; j++, reg2++)
66 for (i = 0, reg1 = sig1->reg; i < sig1->len; i++, reg1++)
69 image_sig_cmp_features_weights[6] * isqr((int)reg1->h[0] - (int)reg2->h[0]) +
70 image_sig_cmp_features_weights[7] * isqr((int)reg1->h[1] - (int)reg2->h[1]) +
71 image_sig_cmp_features_weights[8] * isqr((int)reg1->h[2] - (int)reg2->h[2]);
73 image_sig_cmp_features_weights[0] * isqr((int)reg1->f[0] - (int)reg2->f[0]) +
74 image_sig_cmp_features_weights[1] * isqr((int)reg1->f[1] - (int)reg2->f[1]) +
75 image_sig_cmp_features_weights[2] * isqr((int)reg1->f[2] - (int)reg2->f[2]) +
76 image_sig_cmp_features_weights[3] * isqr((int)reg1->f[3] - (int)reg2->f[3]) +
77 image_sig_cmp_features_weights[4] * isqr((int)reg1->f[4] - (int)reg2->f[4]) +
78 image_sig_cmp_features_weights[5] * isqr((int)reg1->f[5] - (int)reg2->f[5]);
85 dist[n++] = (dt << 8) + i + (j << 4);
87 MSG("[%u, %u] dt=%u ds=%u df=(%d", i, j, dt, ds, (int)reg1->f[0] - (int)reg2->f[0]);
88 for (uns i = 1; i < IMAGE_VEC_F; i++)
89 MSG(" %d", (int)reg1->f[i] - (int)reg2->f[i]);
90 MSG(") dh=(%d", (int)reg1->h[0] - (int)reg2->h[0]);
91 for (uns i = 1; i < IMAGE_REG_H; i++)
92 MSG(" %d", (int)reg1->h[i] - (int)reg2->h[i]);
96 /* ... for textured images (ignore shape properties) */
98 for (j = 0, reg2 = sig2->reg; j < sig2->len; j++, reg2++)
99 for (i = 0, reg1 = sig1->reg; i < sig1->len; i++, reg1++)
102 image_sig_cmp_features_weights[0] * isqr((int)reg1->f[0] - (int)reg2->f[0]) +
103 image_sig_cmp_features_weights[1] * isqr((int)reg1->f[1] - (int)reg2->f[1]) +
104 image_sig_cmp_features_weights[2] * isqr((int)reg1->f[2] - (int)reg2->f[2]) +
105 image_sig_cmp_features_weights[3] * isqr((int)reg1->f[3] - (int)reg2->f[3]) +
106 image_sig_cmp_features_weights[4] * isqr((int)reg1->f[4] - (int)reg2->f[4]) +
107 image_sig_cmp_features_weights[5] * isqr((int)reg1->f[5] - (int)reg2->f[5]);
108 dist[n++] = (dt << 12) + i + (j << 4);
110 MSG("[%u, %u] dt=%u df=(%d", i, j, dt, (int)reg1->f[0] - (int)reg2->f[0]);
111 for (uns i = 1; i < IMAGE_VEC_F; i++)
112 MSG(" %d", (int)reg1->f[i] - (int)reg2->f[i]);
117 /* One or both signatures have no regions */
121 /* Get percentages */
122 for (i = 0, reg1 = sig1->reg; i < sig1->len; i++, reg1++)
124 for (i = 0, reg2 = sig2->reg; i < sig2->len; i++, reg2++)
127 /* Sort entries in distance matrix */
128 image_signatures_dist_integrated_sort(n, dist);
130 /* Compute significance matrix and resulting distance */
132 MSGL("Significance matrix:");
133 for (k = 0, l = 128; l; k++)
136 j = (dist[k] >> 4) & 15;
153 reg1 = sig1->reg + i;
154 reg2 = sig2->reg + j;
155 MSG("[%u, %u] s=%u d=%u df=(%d", i, j, s, d, (int)reg1->f[0] - (int)reg2->f[0]);
156 for (uns i = 1; i < IMAGE_VEC_F; i++)
157 MSG(" %d", (int)reg1->f[i] - (int)reg2->f[i]);
158 if (!((sig1->flags | sig2->flags) & IMAGE_SIG_TEXTURED))
160 MSG(") dh=(%d", (int)reg1->h[0] - (int)reg2->h[0]);
161 for (uns i = 1; i < IMAGE_REG_H; i++)
162 MSG(" %d", (int)reg1->h[i] - (int)reg2->h[i]);
173 image_signatures_dist_fuzzy(struct image_signature *sig1, struct image_signature *sig2)
176 image_signatures_dist_fuzzy_explain(struct image_signature *sig1, struct image_signature *sig2, void (*msg)(byte *text, void *param), void *param)
180 byte buf[1024], *line = buf;
181 MSGL("Fuzzy matching");
182 explain_signature(sig1, msg, param);
183 explain_signature(sig2, msg, param);
186 /* FIXME: do not mux textured and non-textured images (should be split in clusters tree) */
187 if ((sig1->flags ^ sig2->flags) & IMAGE_SIG_TEXTURED)
189 MSGL("Textured vs non-textured");
193 uns cnt1 = sig1->len;
194 uns cnt2 = sig2->len;
195 struct image_region *reg1 = sig1->reg;
196 struct image_region *reg2 = sig2->reg;
197 uns mf[IMAGE_REG_MAX][IMAGE_REG_MAX], mh[IMAGE_REG_MAX][IMAGE_REG_MAX];
198 uns lf[IMAGE_REG_MAX * 2], lh[IMAGE_REG_MAX * 2];
199 uns df = sig1->df + sig2->df, dh = sig1->dh + sig2->dh;
201 /* Compute distance matrix */
202 for (uns i = 0; i < cnt1; i++)
203 for (uns j = 0; j < cnt2; j++)
206 for (uns k = 0; k < IMAGE_VEC_F; k++)
208 int dif = reg1[i].f[k] - reg2[j].f[k];
209 d += image_sig_cmp_features_weights[k] * dif * dif;
213 for (uns k = 0; k < IMAGE_REG_H; k++)
215 int dif = reg1[i].h[k] - reg2[j].h[k];
216 d += image_sig_cmp_features_weights[k + IMAGE_VEC_F] * dif * dif;
221 uns lfs = 0, lhs = 0;
222 for (uns i = 0; i < cnt1; i++)
224 uns f = mf[i][0], h = mh[i][0];
225 for (uns j = 1; j < cnt2; j++)
227 f = MIN(f, mf[i][j]);
228 h = MIN(h, mh[i][j]);
230 lf[i] = (df * 0x10000) / (df + fast_sqrt_u32(f));
231 lh[i] = (dh * 0x10000) / (dh + fast_sqrt_u32(h));
232 lfs += lf[i] * (6 * reg1[i].wa + 2 * reg1[i].wb);
233 lhs += lh[i] * reg1[i].wa;
235 for (uns i = 0; i < cnt2; i++)
237 uns f = mf[0][i], h = mh[0][i];
238 for (uns j = 1; j < cnt1; j++)
240 f = MIN(f, mf[j][i]);
241 h = MIN(h, mh[j][i]);
243 lf[i + cnt1] = (df * 0x10000) / (df + fast_sqrt_u32(f));
244 lh[i + cnt1] = (dh * 0x10000) / (dh + fast_sqrt_u32(h));
245 lfs += lf[i] * (6 * reg2[i].wa + 2 * reg2[i].wb);
246 lhs += lh[i] * reg2[i].wa;
249 uns measure = lfs * 6 + lhs * 2 * 8;
252 /* Display similarity vectors */
254 for (uns i = 0; i < cnt1 + cnt2; i++)
260 MSG("%.4f", (double)lf[i] / 0x10000);
264 for (uns i = 0; i < cnt1 + cnt2; i++)
270 MSG("%.4f", (double)lh[i] / 0x10000);
273 MSGL("Lfm=%.4f", lfs / (double)(1 << (3 + 8 + 16)));
274 MSGL("Lhm=%.4f", lhs / (double)(1 << (8 + 16)));
275 MSGL("measure=%.4f", measure / (double)(1 << (3 + 3 + 8 + 16)));
278 return (1 << (3 + 3 + 8 + 16)) - measure;
283 image_signatures_dist_average(struct image_signature *sig1, struct image_signature *sig2)
286 image_signatures_dist_average_explain(struct image_signature *sig1, struct image_signature *sig2, void (*msg)(byte *text, void *param), void *param)
290 byte buf[1024], *line = buf;
291 MSGL("Average matching");
295 for (uns i = 0; i < IMAGE_VEC_F; i++)
297 uns d = image_sig_cmp_features_weights[0] * isqr((int)sig1->vec.f[i] - (int)sig2->vec.f[i]);
298 MSGL("feature %u: d=%u (%u %u)", i, d, sig1->vec.f[i], sig2->vec.f[i]);
302 MSGL("dist=%u", dist);