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
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
|
#include "ContourUtility.hh"
#include <cmath>
#include <cstdlib>
//#include <iostream>
#include <assert.h>
#include <stdio.h>
void CenterAndReduce(const Contours::Contour& source,
Contours::Contour& dest,
unsigned int shift, // integer coordinate bit reduction
double& drx, // returned centroid
double& dry // returned centroid
)
{
unsigned int rx=0;
unsigned int ry=0;
unsigned int lastx=(unsigned int)-1;
unsigned int lasty=(unsigned int)-1;
for (unsigned int i=0; i<source.size(); i++) {
unsigned int x=(int)source[i].first >> shift;
unsigned int y=(int)source[i].second >> shift;
if (x != lastx || y != lasty) {
dest.push_back(std::pair<unsigned int, unsigned int>(x, y));
lastx=x;
lasty=y;
rx+=x;
ry+=y;
}
}
drx=((double) rx / (double) dest.size());
dry=((double) ry / (double) dest.size());
}
void RotCenterAndReduce(const Contours::Contour& source,
Contours::Contour& dest,
double phi, // clockwise rotation in radians
unsigned int add, // added to all coordinates to avoid negative values,
// should be to set to image.w+image.h
unsigned int shift, // integer coordinate bit reduction
double& drx, // returned centroid
double& dry // returned centroid
)
{
Contours::Contour tmp;
double c=cos(phi);
double s=sin(phi);
int lastx=0;
int lasty=0;
for (unsigned int i=0; i<source.size(); i++) {
double dx=(double)source[i].first;
double dy=(double)source[i].second;
double nx=c*dx - s*dy;
double ny=s*dx + c*dy;
int x=(int)nx + (int)add;
int y=(int)ny + (int)add;
// in case of gab, place an intermediate contour pixel
if (i > 0 && (abs(x-lastx) > 1 || abs(y-lasty) > 1)) {
tmp.push_back(std::pair<unsigned int, unsigned int>((x+lastx)/2, (y+lasty)/2));
}
tmp.push_back(std::pair<unsigned int, unsigned int>(x,y));
lastx=x;
lasty=y;
}
CenterAndReduce(tmp, dest, shift, drx, dry);
}
double L1Dist(const Contours::Contour& a,
const Contours::Contour& b,
double drax, // a centroid
double dray, // a centroid
double drbx, // b centroid
double drby, // b centroid
unsigned int shift, // reduction bits (in case a and b are reduced) or 0
double& transx, // returned translation for a
double& transy // returned translation for a
)
{
double factor=(double)(1 << shift);
transx= (drbx-drax)*factor;
transy= (drby-dray)*factor;
int dx= (int)(drbx-drax);
int dy= (int)(drby-dray);
double sum=.0;
int best=1000000;
int opt=0;
int delta=0;
int lastpos=0;
//bool forward=true;
for (unsigned int i=0; i<a.size(); i++) {
if (i>0) {
delta=abs((int)a[i].first-(int)a[i-1].first)+abs((int)a[i].second-(int)a[i-1].second);
opt=best-delta;
best+=delta;
}
int pos=lastpos;
for (unsigned int j=0; j<b.size(); j++) {
int current=abs(dx+(int)a[i].first-(int)b[pos].first)+abs(dy+(int)a[i].second-(int)b[pos].second);
/* sanity check
if (current < 0) {
std::cout << "? " << current << "\t"
<< abs(dx+(int)a[i].first-(int)b[pos].first) << "\t"
<< abs(dy+(int)a[i].second-(int)b[pos].second) << std::endl;
std::cout << dx << "\t" << (int)a[i].first << "\t" << (int)b[pos].first << std::endl;
std::cout << dy << "\t" << (int)a[i].second << "\t" << (int)b[pos].second << std::endl;
} */
if (current < best) {
best=current;
//forward=(pos>lastpos);
lastpos=pos;
if (best == opt)
j=b.size();
}
else if (current > best) {
int skip=((current - best) - 1) / 2;
j+=skip;
pos+=skip; //(forward) ? skip : -skip;
}
//if (forward) {
pos++;
if (pos >= (int)b.size())
pos-=b.size();
//} else {
// pos--;
//if (pos < 0)
// pos+=b.size();
//}
}
sum += best;
}
return sum*factor;
}
// not very efficient, yet effective
static void PutPixel(Image& img, int x, int y, uint16_t R, uint16_t G, uint16_t B)
{
Image::iterator p=img.begin();
p=p.at(x,y);
p.setRGB(R, G, B);
p.set(p);
}
void DrawContour(Image& img, const Contours::Contour& c, unsigned int r, unsigned int g, unsigned int b)
{
for (unsigned int i=0; i<c.size(); i++) {
PutPixel(img, c[i].first, c[i].second, r, g, b);
}
}
void DrawTContour(Image& img, const Contours::Contour& c, unsigned int tx, unsigned int ty, unsigned int r, unsigned int g, unsigned int b)
{
for (unsigned int i=0; i<c.size(); i++) {
int x=c[i].first+tx;
int y=c[i].second+ty;
if (x >= 0 && x <= img.w && y >= 0 && y <= img.h)
PutPixel(img, x, y, r, g, b);
}
}
/*
void DrawContour(Image& img, const Contours::Contour& c, unsigned int r, unsigned int g, unsigned int b)
{
int xsum=0;
int ysum=0;
for (unsigned int i=0; i<c.size(); i++) {
PutPixel(img, c[i].first, c[i].second, r, g, b);
xsum+=c[i].first;
ysum+=c[i].second;
}
xsum /= c.size();
ysum /= c.size();
for (int dx=-10; dx<=10; dx++) {
int x=xsum+dx;
int y=ysum;
if (x >= 0 && x <= img.w && y >= 0 && y <= img.h)
PutPixel(img, x,y, r, g, b);
}
for (int dy=-10; dy<=10; dy++) {
int x=xsum;
int y=ysum+dy;
if (x >= 0 && x <= img.w && y >= 0 && y <= img.h)
PutPixel(img,x,y, r, g, b);
}
Contours::Contour trash;
double tx=0;
double ty=0;
CenterAndReduce(c,trash,3,tx,ty);
xsum=(tx*8.0);
ysum=(ty*8.0);
for (int dx=-4; dx<=4; dx++) {
int x=xsum+dx;
int y=ysum;
if (x >= 0 && x <= img.w && y >= 0 && y <= img.h)
PutPixel(img, x,y, r, g, b);
}
for (int dy=-4; dy<=4; dy++) {
int x=xsum;
int y=ysum+dy;
if (x >= 0 && x <= img.w && y >= 0 && y <= img.h)
PutPixel(img,x,y, r, g, b);
}
}
void DrawTContour(Image& img, const Contours::Contour& c, unsigned int tx, unsigned int ty, unsigned int r, unsigned int g, unsigned int b)
{
int xsum=0;
int ysum=0;
for (unsigned int i=0; i<c.size(); i++) {
int x=c[i].first+tx;
int y=c[i].second+ty;
xsum+=x;
ysum+=y;
if (x >= 0 && x <= img.w && y >= 0 && y <= img.h)
PutPixel(img, x, y, r, g, b);
}
xsum /= c.size();
ysum /= c.size();
for (int dx=-10; dx<=10; dx++) {
int x=xsum+dx;
int y=ysum;
if (x >= 0 && x <= img.w && y >= 0 && y <= img.h)
PutPixel(img, x,y, r, g, b);
}
for (int dy=-10; dy<=10; dy++) {
int x=xsum;
int y=ysum+dy;
if (x >= 0 && x <= img.w && y >= 0 && y <= img.h)
PutPixel(img,x,y, r, g, b);
}
Contours::Contour trash;
double ddx=0;
double ddy=0;
CenterAndReduce(c,trash,3,ddx,ddy);
xsum=tx+(ddx*8.0);
ysum=ty+(ddy*8.0);
for (int dx=-4; dx<=4; dx++) {
int x=xsum+dx;
int y=ysum;
if (x >= 0 && x <= img.w && y >= 0 && y <= img.h)
PutPixel(img, x,y, r, g, b);
}
for (int dy=-4; dy<=4; dy++) {
int x=xsum;
int y=ysum+dy;
if (x >= 0 && x <= img.w && y >= 0 && y <= img.h)
PutPixel(img,x,y, r, g, b);
}
}
*/
bool WriteContour(FILE* f, const Contours::Contour& source)
{
if (source.size() == 0) {
if (fprintf(f, "! 0 0 0\n") < 0)
return false;
} else {
unsigned int l=source.size();
int lastx=source[0].first;
int lasty=source[0].second;
if (fprintf(f, "! %d %d %d\n", lastx, lasty, l) < 0)
return false;
int code=0;
for (unsigned int i=1; i<l; i++) {
int currentx=source[i].first;
int currenty=source[i].second;
int caddx=1+currentx-lastx;
int caddy=1+currenty-lasty;
assert(caddx >=0 && caddx < 3);
assert(caddy >=0 && caddy < 3);
int cadd=caddx+(3*caddy);
lastx=currentx;
lasty=currenty;
if (i % 2 == 1)
code=cadd;
else {
code+=3*3*cadd;
if (fputc('"'+(char) code, f) == EOF)
return false;
}
}
if (l % 2 == 0) {
if (fputc('"'+(char) code, f)==EOF)
return false;
}
if (fputc('\n', f) == EOF)
return false;
}
return true;
}
bool ReadContour(FILE* f, Contours::Contour& dest)
{
int l;
int x;
int y;
if (fscanf(f, "! %d %d %d\n", &x, &y, &l) != 3)
return false;
dest.resize(l);
if (l == 0)
return true;
dest[0].first=x;
dest[0].second=y;
int c=0;
for (unsigned int i=1; i<(unsigned int) l ; i++) {
if (i % 2 == 1) {
c=fgetc(f);
if (c == EOF)
return false;
c-='"';
} else {
c /= 3*3;
}
int dx=(c % 3) - 1;
int dy=((c / 3) % 3) -1;
x+=dx;
y+=dy;
dest[i].first=x;
dest[i].second=y;
}
fgetc(f); // read linebreak;
return true;
}
bool WriteContourArray(FILE* f, const std::vector <Contours::Contour*>& contours)
{
unsigned int n=contours.size();
if (fprintf(f, "CONTOURS v1 %d\n", n)<0)
return false;
for (unsigned int i=0; i<n; i++)
if (!WriteContour(f,*(contours[i])))
return false;
return true;
}
bool ReadContourArray(FILE* f, std::vector <Contours::Contour*>& contours)
{
unsigned int n=0;
if (fscanf(f, "CONTOURS v1 %d\n", &n) != 1) {
return false;
}
contours.resize(n);
for (unsigned int i=0; i<n; i++) {
contours[i]=new Contours::Contour;
if (!ReadContour(f, *(contours[i]))) {
for (unsigned int j=0; j<=i; j++)
delete contours[j];
contours.clear();
return false;
}
}
return true;
}
|
