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cc80f89e | 1 | /************************************************************************** |
2 | * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
3 | * * | |
4 | * Author: The ALICE Off-line Project. * | |
5 | * Contributors are mentioned in the code where appropriate. * | |
6 | * * | |
7 | * Permission to use, copy, modify and distribute this software and its * | |
8 | * documentation strictly for non-commercial purposes is hereby granted * | |
9 | * without fee, provided that the above copyright notice appears in all * | |
10 | * copies and that both the copyright notice and this permission notice * | |
11 | * appear in the supporting documentation. The authors make no claims * | |
12 | * about the suitability of this software for any purpose. It is * | |
13 | * provided "as is" without express or implied warranty. * | |
14 | **************************************************************************/ | |
15 | ||
88cb7938 | 16 | /* $Id$ */ |
cc80f89e | 17 | |
18 | //----------------------------------------------------------------------------- | |
19 | // | |
67d37b32 | 20 | // Implementation of class ALITPCCLUSTERFINDER |
cc80f89e | 21 | // |
22 | //Class for cluster finding in two dimension. | |
23 | //In the present there are implemented two algorithm | |
24 | //primitive recursion algorithm. (FindPeaks) | |
25 | //Algorithm is not working in case of overlaping clusters | |
26 | //Maximum - minimum in direction algoritm (Find clusters) | |
27 | //In this algoritm we suppose that each cluster has local | |
28 | //maximum. From this local maximum I mus see each point | |
29 | //of cluster. | |
30 | //From maximum i can accept every point in radial | |
31 | //direction which is before border in direction | |
32 | //Border in direction occur if we have next in | |
33 | //direction nder threshold or response begin | |
34 | //to increase in given radial direction | |
35 | //----------------------------------------------------------------------------- | |
73042f01 | 36 | |
cc80f89e | 37 | #include "TMinuit.h" |
38 | #include "AliArrayI.h" | |
39 | #include "TClonesArray.h" | |
40 | #include "AliTPC.h" | |
41 | #include "TRandom.h" | |
42 | #include "AliH2F.h" | |
43 | #include "TMarker.h" | |
67d37b32 | 44 | #include "AliComplexCluster.h" |
73042f01 | 45 | #include "AliTPCClusterFinder.h" |
19364939 | 46 | #include <Riostream.h> |
47 | #include <Riostream.h> | |
cc80f89e | 48 | |
49 | //direction constants possible direction in 8 different sectors | |
50 | // | |
51 | ||
52 | ||
53 | const Int_t kClStackSize =1000; | |
54 | ||
55 | ||
56 | ||
57 | ||
73042f01 | 58 | static AliTPCClusterFinder * gClusterFinder; //for fitting routine |
cc80f89e | 59 | |
176aff27 | 60 | void gauss(Int_t &/*npar*/, Double_t */*gin*/, Double_t &f, Double_t *par, Int_t /*iflag*/) |
cc80f89e | 61 | { |
62 | AliArrayI * points = gClusterFinder->GetStack(); | |
63 | const Int_t nbins = gClusterFinder->GetStackIndex(); | |
64 | Int_t i; | |
65 | //calculate chisquare | |
66 | Double_t chisq = 0; | |
67 | Double_t delta; | |
68 | for (i=0;i<nbins; i++) { | |
69 | Float_t x = points->At(i*3); | |
70 | Float_t y = points->At(i*3+1); | |
71 | Float_t z = points->At(i*3+2); | |
72 | Float_t deltax2 = (x-par[1]); | |
73 | deltax2*=deltax2; | |
74 | deltax2*=par[3]; | |
75 | Float_t deltay2 = (y-par[2]); | |
76 | deltay2*=deltay2; | |
77 | deltay2*=par[4]; | |
78 | ||
79 | delta = z-par[0]*TMath::Exp(-deltax2-deltay2); | |
80 | chisq += delta*delta; | |
81 | } | |
82 | f = chisq; | |
83 | } | |
84 | ||
85 | ||
73042f01 | 86 | ClassImp(AliTPCClusterFinder) |
87 | //ClassImp(AliCell) | |
cc80f89e | 88 | |
73042f01 | 89 | AliTPCClusterFinder::AliTPCClusterFinder() |
cc80f89e | 90 | { |
91 | fDigits =0; | |
7775178f | 92 | fCells = 0; |
cc80f89e | 93 | fDimX = 0; |
94 | fDimY = 0; | |
cc80f89e | 95 | fNoiseTh = 3; |
96 | fMulSigma2 = 16; //4 sigma | |
97 | fDirSigmaFac = 1.4; | |
98 | fDirAmpFac =1.3; | |
99 | fNType=8; | |
100 | fThreshold = 2; | |
101 | fStack = new AliArrayI; | |
102 | fStack->Set(kClStackSize); | |
103 | fClustersArray =0; | |
73042f01 | 104 | SetSigmaX(1,0,0); |
105 | SetSigmaY(1,0,0); | |
106 | ||
cc80f89e | 107 | |
108 | fDetectorParam = 0; | |
7775178f | 109 | fDetectorIndex = 0; |
cc80f89e | 110 | ResetStatus(); |
111 | fBFit = kFALSE; | |
112 | fMinuit= new TMinuit(5); | |
113 | fMinuit->SetFCN(gauss); | |
114 | gClusterFinder = this; | |
115 | ||
116 | } | |
117 | ||
118 | ||
73042f01 | 119 | AliTPCClusterFinder::~AliTPCClusterFinder() |
cc80f89e | 120 | { |
121 | if (fDigits != 0) delete fDigits; | |
122 | } | |
123 | ||
73042f01 | 124 | void AliTPCClusterFinder::SetSigmaX(Float_t s0, Float_t s1x, Float_t s1y) |
125 | { | |
126 | fSigmaX[0]=s0; | |
127 | fSigmaX[1]=s1x; | |
128 | fSigmaX[2]=s1y; | |
129 | ||
130 | } | |
131 | void AliTPCClusterFinder::SetSigmaY(Float_t s0, Float_t s1x, Float_t s1y) | |
132 | { | |
133 | fSigmaY[0]=s0; | |
134 | fSigmaY[1]=s1x; | |
135 | fSigmaY[2]=s1y; | |
136 | } | |
137 | ||
138 | ||
139 | ||
140 | Bool_t AliTPCClusterFinder::SetSigma2(Int_t i, Int_t j, Float_t & sigmax2, Float_t &sigmay2) | |
141 | { | |
142 | // | |
143 | //set sigmax2 and sigma y2 accordig i and j position of cell | |
144 | // | |
145 | ||
146 | // Float_t x[3] = {ItoX(i),JtoY(j),0}; | |
147 | Float_t x= ItoX(i); | |
148 | Float_t y= JtoY(j); | |
149 | ||
150 | sigmax2= fSigmaX[0]+fSigmaX[1]*x+fSigmaX[2]*y; | |
151 | sigmay2= fSigmaY[0]+fSigmaY[1]*x+fSigmaY[2]*y; | |
152 | return kTRUE; | |
153 | } | |
154 | ||
155 | /* | |
156 | Bool_t AliTPCClusterFinder::SetSigma2(Int_t i, Int_t j, Float_t & sigmax2, Float_t &sigmay2) | |
157 | { | |
158 | // | |
159 | //set sigmax2 and sigma y2 accordig i and j position of cell | |
160 | // | |
161 | if (fDetectorParam==0) { | |
162 | sigmax2=1; | |
163 | sigmay2=1; | |
164 | return kFALSE; | |
165 | } | |
166 | Float_t x[3] = {ItoX(i),JtoY(j),0}; | |
167 | Float_t sigma[2]; | |
168 | fDetectorParam->GetClusterSize(x,fDetectorIndex,0,0,sigma); | |
169 | sigmax2=sigma[0]*(fX2-fX1)*(fX2-fX1)/(fDimX*fDimX); | |
170 | sigmay2=sigma[1]*(fY2-fY1)*(fY2-fY1)/(fDimY*fDimY); | |
171 | return kTRUE; | |
172 | } | |
173 | */ | |
174 | ||
175 | ||
176 | void AliTPCClusterFinder::GetHisto(TH2F * his2) | |
cc80f89e | 177 | { |
178 | ||
73042f01 | 179 | UInt_t idim =his2->GetNbinsX(); |
180 | UInt_t jdim =his2->GetNbinsY(); | |
cc80f89e | 181 | fX1 = his2->GetXaxis()->GetXmin(); |
182 | fX2 = his2->GetXaxis()->GetXmax(); | |
183 | fY1 = his2->GetYaxis()->GetXmin(); | |
184 | fY2 = his2->GetYaxis()->GetXmax(); | |
185 | ||
186 | if ( (idim>0) && (jdim>0)) | |
187 | { | |
188 | rOK = kTRUE; | |
189 | fDimX = idim; | |
190 | fDimY = jdim; | |
73042f01 | 191 | Int_t size =idim*jdim; |
cc80f89e | 192 | if (fDigits !=0) delete fDigits; |
73042f01 | 193 | fDigits = (Int_t*) new Int_t[size]; |
194 | fCells = (AliCell*) new AliCell[size]; | |
195 | ||
cc80f89e | 196 | } else |
197 | rOK=kFALSE; | |
37831078 | 198 | for (Int_t i = 0; i<(Int_t)idim;i++) |
199 | for (Int_t j = 0; j<(Int_t)jdim;j++) | |
cc80f89e | 200 | { |
201 | Int_t index = his2->GetBin(i+1,j+1); | |
73042f01 | 202 | //AliCell * cell = GetCell(i,j); |
203 | //if (cell!=0) cell->SetSignal(his2->GetBinContent(index)); | |
bcc5d57d | 204 | SetSignal(static_cast<int>(his2->GetBinContent(index)),i,j); |
cc80f89e | 205 | } |
206 | ||
207 | } | |
208 | ||
209 | ||
210 | ||
211 | ||
73042f01 | 212 | void AliTPCClusterFinder::FindMaxima() |
cc80f89e | 213 | { |
214 | for (Int_t i=0; i<fDimX; i++) | |
215 | for (Int_t j=0;j<fDimY; j++) | |
216 | if (IsMaximum(i,j)) cout<<i<<" "<<j<<"\n"; | |
217 | } | |
218 | ||
219 | ||
73042f01 | 220 | void AliTPCClusterFinder::Transform(AliDigitCluster * c) |
cc80f89e | 221 | { |
222 | //transform coordinata from bin coordinata to "normal coordinata" | |
223 | //for example if we initialize finder with histogram | |
224 | //it transform values from bin coordinata to the histogram coordinata | |
225 | c->fX=ItoX(c->fX); | |
226 | c->fY=JtoY(c->fY); | |
227 | c->fMaxX=ItoX(c->fMaxX); | |
228 | c->fMaxY=JtoY(c->fMaxY); | |
229 | ||
230 | c->fSigmaX2=c->fSigmaX2*(fX2-fX1)*(fX2-fX1)/(fDimX*fDimX); | |
231 | c->fSigmaY2=c->fSigmaY2*(fY2-fY1)*(fY2-fY1)/(fDimY*fDimY); | |
232 | c->fArea =c->fArea*(fX2-fX1)*(fY2-fY1)/(fDimX*fDimY); | |
233 | } | |
73042f01 | 234 | void AliTPCClusterFinder::AddToStack(Int_t i, Int_t j, Int_t signal) |
cc80f89e | 235 | { |
236 | // | |
237 | //add digit to stack | |
238 | // | |
239 | if ( ((fStackIndex+2)>=kClStackSize) || (fStackIndex<0) ) return; | |
240 | fStack->AddAt(i,fStackIndex); | |
241 | fStack->AddAt(j,fStackIndex+1); | |
242 | fStack->AddAt(signal,fStackIndex+2); | |
243 | fStackIndex+=3; | |
244 | } | |
245 | ||
73042f01 | 246 | void AliTPCClusterFinder::GetClusterStatistic(AliDigitCluster & cluster) |
cc80f89e | 247 | { |
248 | // | |
249 | //calculate statistic of cluster | |
250 | // | |
251 | Double_t sumxw,sumyw,sumx2w,sumy2w,sumxyw,sumw; | |
73042f01 | 252 | Int_t minx,maxx,miny,maxy; |
cc80f89e | 253 | sumxw=sumyw=sumx2w=sumy2w=sumxyw=sumw=0; |
254 | minx=fDimX; | |
255 | maxx=-fDimX; | |
256 | miny=fDimY; | |
257 | maxy=-fDimY; | |
258 | Int_t x0=fStack->At(0); | |
259 | Int_t y0=fStack->At(1); | |
73042f01 | 260 | Int_t maxQx =x0; |
261 | Int_t maxQy =y0; | |
262 | Int_t maxQ=fStack->At(2); | |
263 | ||
264 | ||
cc80f89e | 265 | for (Int_t i = 0; i<fStackIndex;i+=3){ |
266 | Int_t x = fStack->At(i); | |
267 | Int_t y = fStack->At(i+1); | |
268 | Int_t dx=x-x0; | |
269 | Int_t dy=y-y0; | |
270 | Int_t w = fStack->At(i+2); | |
73042f01 | 271 | if (w>maxQ){ |
272 | maxQ = w; | |
273 | maxQx = x; | |
274 | maxQy=y; | |
275 | } | |
cc80f89e | 276 | if (x<minx) minx=x; |
277 | if (y<miny) miny=y; | |
278 | if (x>maxx) maxx=x; | |
279 | if (y>maxy) maxy=y; | |
280 | sumxw+=dx*w; | |
281 | sumyw+=dy*w; | |
282 | sumx2w+=dx*dx*w; | |
283 | sumy2w+=dy*dy*w; | |
284 | sumxyw+=dx*dy*w; | |
285 | sumw+=w; | |
286 | } | |
287 | cluster.fQ = sumw; | |
288 | if (sumw>0){ | |
289 | cluster.fX = sumxw/sumw; | |
290 | cluster.fY = sumyw/sumw; | |
291 | cluster.fQ = sumw; | |
292 | cluster.fSigmaX2 = sumx2w/sumw-cluster.fX*cluster.fX; | |
293 | cluster.fSigmaY2 = sumy2w/sumw-cluster.fY*cluster.fY; | |
294 | cluster.fSigmaXY = sumxyw/sumw-cluster.fX*cluster.fY; | |
73042f01 | 295 | cluster.fMaxX = maxQx; |
296 | cluster.fMaxY = maxQy; | |
cc80f89e | 297 | cluster.fMax = maxQ; |
298 | cluster.fArea = fStackIndex/3; | |
299 | cluster.fNx = maxx-minx+1; | |
300 | cluster.fNy = maxy-miny+1; | |
301 | cluster.fX +=x0; | |
302 | cluster.fY +=y0; | |
303 | } | |
304 | } | |
73042f01 | 305 | void AliTPCClusterFinder::GetClusterFit(AliDigitCluster & cluster) |
cc80f89e | 306 | { |
307 | // | |
308 | //calculate statistic of cluster | |
309 | // | |
310 | Double_t arglist[10]; | |
311 | Int_t ierflg = 0; | |
312 | ||
313 | arglist[0] = 1; | |
314 | fMinuit->mnexcm("SET ERR", arglist ,1,ierflg); | |
315 | ||
316 | //fistly find starting parameters | |
317 | Int_t minx,maxx,miny,maxy,maxQ,maxQx,maxQy; | |
318 | Int_t over =0; | |
319 | Float_t sumxw,sumyw,sumw; | |
320 | sumxw=sumyw=sumw=0; | |
321 | minx=fDimX; | |
322 | maxx=-fDimX; | |
323 | miny=fDimY; | |
324 | maxy=-fDimY; | |
325 | maxQx=fStack->At(0); | |
326 | maxQy=fStack->At(1); | |
327 | maxQ=fStack->At(2); | |
328 | ||
329 | for (Int_t i = 0; i<fStackIndex;i+=3){ | |
330 | Int_t x = fStack->At(i); | |
331 | Int_t y = fStack->At(i+1); | |
332 | Int_t w = fStack->At(i+2); | |
333 | if (w>fThreshold) { | |
334 | over++; | |
335 | sumw+=w; | |
336 | sumxw+=x*w; | |
337 | sumyw+=y*w; | |
338 | if (x<minx) minx=x; | |
339 | if (y<miny) miny=y; | |
340 | if (x>maxx) maxx=x; | |
341 | if (y>maxy) maxy=y; | |
342 | if (w>maxQ) { | |
343 | maxQ=w; | |
344 | maxQx=x; | |
345 | maxQy=y; | |
346 | } | |
347 | } | |
348 | } | |
349 | Int_t nx = maxx-minx+1; | |
350 | Int_t ny = maxy-miny+1; | |
351 | ||
352 | SetSigma2(maxQx,maxQy,fCurrentSigmaX2,fCurrentSigmaY2); | |
353 | Double_t vstart[5]={maxQ,sumxw/sumw,sumyw/sumw,1/(2*fCurrentSigmaX2),1/(2*fCurrentSigmaY2)}; | |
354 | Double_t step[5]={1.,0.01,0.01,0.01,0.01}; | |
355 | fMinuit->mnparm(0, "amp", vstart[0], step[0], 0,0,ierflg); | |
356 | fMinuit->mnparm(1, "x0", vstart[1], step[1], 0,0,ierflg); | |
357 | fMinuit->mnparm(2, "y0", vstart[2], step[2], 0,0,ierflg); | |
358 | fMinuit->mnparm(3, "sx2", vstart[3], step[3], 0,0,ierflg); | |
359 | fMinuit->mnparm(4, "sy2", vstart[4], step[4], 0,0,ierflg); | |
360 | arglist[0] = 500; | |
361 | arglist[1] = 1.; | |
362 | ||
363 | fMinuit->mnfree(0); //set unfixed all parameters | |
364 | //if we have area less then | |
365 | if (over<=21) { //if we dont't have more then 7 points | |
366 | fMinuit->FixParameter(3); | |
367 | fMinuit->FixParameter(4); | |
368 | } | |
369 | else { | |
370 | if (nx<3) fMinuit->FixParameter(3); //fix sigma x if no data in x direction | |
371 | if (ny<3) fMinuit->FixParameter(4); //fix sigma y if no data in y direction | |
372 | } | |
373 | fMinuit->mnexcm("MIGRAD", arglist ,2,ierflg); | |
374 | ||
375 | if (sumw>0){ | |
376 | Double_t x[5]; | |
377 | Double_t error[5]; | |
378 | fMinuit->GetParameter(0,x[0],error[0]); | |
379 | fMinuit->GetParameter(1,x[1],error[1]); | |
380 | fMinuit->GetParameter(2,x[2],error[2]); | |
381 | fMinuit->GetParameter(3,x[3],error[3]); | |
382 | fMinuit->GetParameter(4,x[4],error[4]); | |
383 | ||
384 | cluster.fX = x[1]; | |
385 | cluster.fY = x[2]; | |
386 | cluster.fMaxX = maxQx; | |
387 | cluster.fMaxY = maxQy; | |
388 | ||
389 | cluster.fQ = sumw; | |
390 | cluster.fSigmaX2 = 1/TMath::Sqrt(2*x[3]); | |
391 | cluster.fSigmaY2 = 1/TMath::Sqrt(2*x[4]); | |
392 | cluster.fSigmaXY = 0; | |
393 | cluster.fMax = x[0]; | |
394 | cluster.fArea = over; | |
395 | cluster.fNx = nx; | |
396 | cluster.fNy = ny; | |
397 | } | |
398 | } | |
399 | ||
73042f01 | 400 | Bool_t AliTPCClusterFinder::CheckIfDirBorder(Float_t x, Float_t y, |
cc80f89e | 401 | Int_t i,Int_t j) |
402 | { | |
403 | // | |
404 | //function which control if given cell with index i, j is the | |
405 | //minimum in direction | |
406 | // x and y are estimate of local maximum | |
407 | //direction is given by the | |
408 | Float_t virtualcell; | |
409 | AliCell * cellor= GetCell(i,j); | |
73042f01 | 410 | Int_t sigor = GetSignal(i,j); |
411 | ||
cc80f89e | 412 | //control derivation in direction |
413 | //if function grows up in direction then there is border | |
414 | Float_t dx = i-x; | |
415 | Float_t dy = j-y; | |
416 | Float_t dd = TMath::Sqrt(dx*dx+dy*dy); | |
417 | Float_t ddx = TMath::Abs(dx); | |
418 | ddx = (ddx>0.5) ? ddx-0.5: 0; | |
419 | ddx*=ddx; | |
420 | Float_t ddy = TMath::Abs(dy); | |
421 | ddy = (ddy>0.5) ? ddy-0.5: 0; | |
422 | ddy*=ddy; | |
423 | Float_t d2 = ddx/(2*fDirSigmaFac*fCurrentSigmaX2)+ddy/(2*fDirSigmaFac*fCurrentSigmaY2); //safety factor | |
424 | //I accept sigmax and sigma y bigge by factor sqrt(fDirsigmaFac) | |
425 | Float_t amp = TMath::Exp(-d2)*fCurrentMaxAmp*fDirAmpFac; //safety factor fDirFac>1 | |
426 | ||
73042f01 | 427 | if (sigor>amp) return kTRUE; |
cc80f89e | 428 | if (dd==0) return kFALSE; |
429 | ||
430 | dx/=dd; | |
431 | dy/=dd; | |
432 | virtualcell = GetVirtualSignal(i+dx,j+dy); | |
433 | if (virtualcell <=fThreshold) return kFALSE; | |
73042f01 | 434 | if (virtualcell>sigor) |
435 | if (virtualcell>(sigor+fNoiseTh)) | |
436 | {cellor->SetDirBorder(fIndex); return kTRUE;} | |
cc80f89e | 437 | else |
438 | { | |
439 | virtualcell = GetVirtualSignal(i+2*dx,j+2*dy); | |
73042f01 | 440 | if (virtualcell>sigor) |
441 | { cellor->SetDirBorder(fIndex); return kTRUE;} | |
cc80f89e | 442 | }; |
443 | return kFALSE; | |
444 | } | |
445 | ||
446 | ||
447 | ||
73042f01 | 448 | |
449 | ||
450 | Bool_t AliTPCClusterFinder::IsMaximum(Int_t i, Int_t j) | |
cc80f89e | 451 | { |
452 | //there is maximum if given digits is 1 sigma over all adjacent | |
453 | //in 8 neighborow | |
454 | //or ther exist virual maximum | |
455 | //is maximum on 24 points neighboring | |
456 | // Bool_t res = kFALSE; | |
457 | Int_t over =0; | |
458 | Int_t overth=0; | |
459 | Int_t oversigma =0; | |
460 | AliCell * cell = GetCell(i,j); | |
73042f01 | 461 | Int_t signal = GetSignal(i,j); |
cc80f89e | 462 | if (cell == 0) return kFALSE; |
463 | for ( Int_t di=-1;di<=1;di++) | |
464 | for ( Int_t dj=-1;dj<=1;dj++){ | |
465 | if ( (di!=0) || (dj!=0)) | |
466 | { | |
467 | AliCell * cell2=GetCell(i+di,j+dj); | |
73042f01 | 468 | Int_t signal2 = GetSignal(i+di,j+dj); |
cc80f89e | 469 | if (cell2 == 0) { |
470 | over+=1; | |
471 | oversigma+=1; | |
472 | } | |
473 | else | |
474 | { | |
73042f01 | 475 | if (signal2>signal) return kFALSE; |
476 | if (signal2>fThreshold) overth++; | |
477 | if (signal2==signal) { | |
cc80f89e | 478 | if (di<0) return kFALSE; |
479 | if ( (di+dj)<0) return kFALSE; | |
480 | } | |
73042f01 | 481 | // if (signal>=signal2){ |
cc80f89e | 482 | over+=1; |
73042f01 | 483 | if (signal>fNoiseTh+signal2) |
cc80f89e | 484 | oversigma+=1; |
485 | //} | |
486 | } | |
487 | } | |
488 | } | |
489 | //if I have only one neighborough over threshold | |
490 | if (overth<2) return kFALSE; | |
491 | if (over<8) return kFALSE; | |
492 | if (oversigma==8) { | |
493 | fCurrentMaxX = i; | |
494 | fCurrentMaxY = j; | |
73042f01 | 495 | fCurrentMaxAmp =signal; |
496 | SetMaximum(fIndex,i,j); | |
cc80f89e | 497 | return kTRUE; |
498 | } | |
499 | //check if there exist virtual maximum | |
73042f01 | 500 | for (Float_t ddi=0.;(ddi<1.);ddi+=0.5) |
501 | for (Float_t ddj=0.;(ddj<1.);ddj+=0.5) | |
502 | if (IsVirtualMaximum(Float_t(i)+ddi,Float_t(j)+ddj)){ | |
503 | fCurrentMaxX = i+ddi; | |
504 | fCurrentMaxY = j+ddj; | |
505 | fCurrentMaxAmp =signal; | |
506 | SetMaximum(fIndex,i,j); | |
cc80f89e | 507 | return kTRUE; |
508 | } | |
509 | return kFALSE; | |
510 | } | |
511 | ||
73042f01 | 512 | Bool_t AliTPCClusterFinder::IsVirtualMaximum(Float_t x, Float_t y) |
cc80f89e | 513 | { |
514 | //there is maximum if given digits is 1 sigma over all adjacent | |
515 | //in 8 neighborow or | |
516 | //is maximum on 24 points neighboring | |
517 | Bool_t res = kFALSE; | |
518 | Int_t over =0; | |
519 | Int_t overth=0; | |
520 | Int_t oversigma =0; | |
521 | Float_t virtualcell = GetVirtualSignal(x,y); | |
522 | if (virtualcell < 0) return kFALSE; | |
523 | for ( Int_t di=-1;di<=1;di++) | |
524 | for ( Int_t dj=-1;dj<=1;dj++) | |
525 | if ( (di!=0) || (dj!=0)) | |
526 | { | |
527 | Float_t virtualcell2=GetVirtualSignal(x+di,y+dj); | |
528 | if (virtualcell2 < 0) { | |
529 | over+=1; | |
530 | oversigma+=1; | |
531 | } | |
532 | else | |
533 | { | |
534 | if (virtualcell2>fThreshold) overth++; | |
535 | if (virtualcell>=virtualcell2){ | |
536 | over+=1; | |
537 | if (virtualcell>fNoiseTh+virtualcell2) | |
538 | oversigma+=1; | |
539 | } | |
540 | } | |
541 | } | |
542 | if (overth<2) return kFALSE; | |
543 | //if there exist only one or less neighboring above threshold | |
544 | if (oversigma==8) res = kTRUE; | |
545 | else if ((over==8)&&(GetNType()==8)) res=kTRUE; | |
546 | else if (over ==8 ) | |
73042f01 | 547 | for ( Int_t di=-2;di<=2;di++) |
cc80f89e | 548 | for ( Int_t dj=-2;dj<=2;dj++) |
73042f01 | 549 | if ( (di==2)||(di==-2) || (dj==2)|| (dj==-2) ) |
cc80f89e | 550 | { |
73042f01 | 551 | Float_t virtualcell2=GetVirtualSignal(x+di,y+dj); |
cc80f89e | 552 | if (virtualcell2 < 0) { |
553 | over+=1; | |
554 | oversigma+=1; | |
555 | } | |
556 | else | |
557 | { | |
558 | if (virtualcell>=virtualcell2) over+=1; | |
559 | } | |
560 | } | |
561 | if (over == 24) res=kTRUE; | |
562 | return res; | |
563 | ||
564 | } | |
565 | ||
566 | ||
73042f01 | 567 | void AliTPCClusterFinder::ResetSignal() |
cc80f89e | 568 | { |
569 | //reset dignals to 0 | |
570 | Int_t size = fDimX*fDimY; | |
73042f01 | 571 | AliCell *dig=fCells; |
cc80f89e | 572 | if (rOK==kTRUE) for (Int_t i=0 ; i<size;i++) dig[i] = 0; |
573 | } | |
574 | ||
575 | ||
576 | ||
73042f01 | 577 | void AliTPCClusterFinder::ResetStatus() |
cc80f89e | 578 | { |
579 | //reset status of signals to not used | |
580 | Int_t size = fDimX*fDimY; | |
73042f01 | 581 | AliCell *dig=fCells; |
cc80f89e | 582 | if (rOK==kTRUE) for (Int_t i=0 ; i<size;i++) |
583 | dig[i].SetStatus(0); | |
584 | } | |
585 | ||
586 | ||
73042f01 | 587 | AliCell * AliTPCClusterFinder::GetCell(Int_t i, Int_t j) |
cc80f89e | 588 | { |
589 | //return reference to the cell with index i,j | |
590 | if (rOK == kTRUE) | |
591 | if ( (i>=0) && (i<fDimX) && (j>=0) && (j<fDimY) ) | |
73042f01 | 592 | return &fCells[i+j*fDimX]; |
cc80f89e | 593 | return 0; |
594 | } | |
595 | ||
73042f01 | 596 | Float_t AliTPCClusterFinder::GetVirtualSignal(Float_t ri, Float_t rj) |
cc80f89e | 597 | { |
598 | //it generate virtual cell as mean value from different cels | |
599 | //after using it must be destructed !!! | |
600 | Int_t i=(Int_t)ri; | |
601 | Int_t j=(Int_t)rj; | |
602 | Int_t ddi = (ri>i)? 1:0; | |
603 | Int_t ddj = (rj>j)? 1:0; | |
604 | Float_t sum = 0; | |
605 | Float_t sumw= 0; | |
606 | for (Int_t di=0;di<=ddi;di++) | |
607 | for (Int_t dj=0;dj<=ddj;dj++) | |
608 | { | |
609 | Float_t w = (ri-i-di)*(ri-i-di)+(rj-j-dj)*(rj-j-dj); | |
610 | if (w>0) w=1/TMath::Sqrt(w); | |
611 | else w=9999999; | |
612 | AliCell * cel2 =GetCell(i+di,j+dj); | |
73042f01 | 613 | Int_t signal2 = GetSignal(i+di,j+dj); |
cc80f89e | 614 | if (cel2!=0) { |
615 | sumw+=w; | |
73042f01 | 616 | sum+= signal2*w; |
cc80f89e | 617 | } |
618 | } | |
619 | if (sumw>0) return (sum/sumw); | |
620 | else | |
621 | return -1; | |
622 | } | |
623 | ||
624 | ||
625 | ||
73042f01 | 626 | void AliTPCClusterFinder::SetBlockIndex(Int_t * index) |
cc80f89e | 627 | { |
628 | // | |
629 | //calculate which indexes we must check for border | |
630 | // | |
631 | if (TMath::Abs(index[0])<2) index[2] = 0; | |
632 | else { | |
633 | index[2] = TMath::Abs(index[0])-1; | |
634 | if (index[0]<0) index[2]*=-1; //first x block | |
635 | } | |
636 | if (TMath::Abs(index[1])<2) index[3] = 0; | |
637 | else { | |
638 | index[3] = TMath::Abs(index[1])-1; | |
639 | if (index[1]<0) index[3]*=-1; //first y block | |
640 | } | |
641 | if (TMath::Abs(index[0])<TMath::Abs(index[1])){ | |
642 | index[4]=index[0]; | |
643 | index[5]=index[3]; | |
644 | } | |
645 | else | |
646 | if (index[0]==index[1]) { | |
647 | index[4]=0; | |
648 | index[5]=0; | |
649 | } | |
650 | else{ | |
651 | index[4]=index[2]; | |
652 | index[5]=index[1]; | |
653 | } | |
654 | return; | |
655 | } | |
656 | ||
657 | //*********************************************************************** | |
658 | //*********************************************************************** | |
659 | ||
73042f01 | 660 | TClonesArray * AliTPCClusterFinder::FindPeaks1(TClonesArray *arr) |
cc80f89e | 661 | { |
662 | //find peaks and write it in form of AliTPCcluster to array | |
73042f01 | 663 | if (arr==0){ |
664 | fClustersArray=new TClonesArray("AliDigitCluster",300); | |
665 | fIndex=1; | |
666 | } | |
667 | else { | |
668 | fClustersArray = arr; | |
669 | fIndex = fClustersArray->GetEntriesFast(); | |
670 | } | |
671 | ||
672 | AliDigitCluster c; | |
cc80f89e | 673 | ResetStatus(); |
cc80f89e | 674 | for (Int_t i=0; i<fDimX; i++) |
675 | for (Int_t j=0;j<fDimY; j++) | |
676 | { | |
677 | fStackIndex=0; | |
678 | fBDistType = kFALSE; | |
679 | AliCell * cell = GetCell(i,j); | |
680 | if (!(cell->IsChecked())) Adjacent(i,j); | |
681 | //if there exists more then 2 digits cluster | |
682 | if (fStackIndex >2 ){ | |
683 | if (fBFit==kFALSE) GetClusterStatistic(c); | |
684 | else GetClusterFit(c); | |
685 | //write some important chracteristic area of cluster | |
686 | // | |
687 | Transform(&c); | |
688 | //write cluster information to array | |
73042f01 | 689 | TClonesArray &lclusters = *fClustersArray; |
690 | new (lclusters[fIndex++]) AliDigitCluster(c); | |
cc80f89e | 691 | // cout<<"fx="<<c.fX<<" fy"<<c.fY<<"\n"; |
692 | } | |
693 | } | |
73042f01 | 694 | return fClustersArray; |
cc80f89e | 695 | } |
696 | ||
697 | ||
73042f01 | 698 | TClonesArray * AliTPCClusterFinder::FindPeaks2(TClonesArray *arr) |
cc80f89e | 699 | { |
700 | //find peaks and write it in form of AliTPCcluster to array | |
73042f01 | 701 | if (arr==0){ |
702 | fClustersArray=new TClonesArray("AliDigitCluster",300); | |
703 | fIndex=1; | |
704 | } | |
705 | else { | |
706 | fClustersArray = arr; | |
707 | fIndex = fClustersArray->GetEntriesFast(); | |
708 | } | |
709 | ||
710 | AliDigitCluster c; | |
cc80f89e | 711 | ResetStatus(); |
712 | ||
713 | for (Int_t i=0; i<fDimX; i++) | |
714 | for (Int_t j=0;j<fDimY; j++) | |
715 | { | |
716 | fStackIndex=0; | |
717 | if (IsMaximum(i,j) == kTRUE){ | |
718 | SetSigma2(i,j,fCurrentSigmaX2,fCurrentSigmaY2); | |
719 | fBDistType = kTRUE; | |
720 | Adjacent(i,j); | |
721 | //if there exists more then 2 digits cluster | |
722 | if (fStackIndex >2 ){ | |
723 | if (fBFit==kFALSE) GetClusterStatistic(c); | |
724 | else GetClusterFit(c); | |
725 | //write some important chracteristic area of cluster | |
726 | // | |
727 | Transform(&c); | |
728 | //write cluster information to array | |
73042f01 | 729 | TClonesArray &lclusters = *fClustersArray; |
cc80f89e | 730 | new(lclusters[fIndex++]) AliDigitCluster(c); |
731 | // cout<<"fx="<<c.fX<<" fy"<<c.fY<<"\n"; | |
732 | } | |
733 | } | |
734 | } | |
73042f01 | 735 | return fClustersArray; |
cc80f89e | 736 | } |
737 | ||
738 | ||
73042f01 | 739 | TClonesArray * AliTPCClusterFinder::FindPeaks3(TClonesArray *arr) |
cc80f89e | 740 | { |
741 | //find peaks and write it in form of AliTPCcluster to array | |
73042f01 | 742 | if (arr==0){ |
743 | fClustersArray=new TClonesArray("AliDigitCluster",300); | |
744 | fIndex=1; | |
745 | } | |
746 | else { | |
747 | fClustersArray = arr; | |
748 | fIndex = fClustersArray->GetEntriesFast(); | |
749 | } | |
750 | ||
751 | AliDigitCluster c; | |
cc80f89e | 752 | ResetStatus(); |
753 | ||
754 | Int_t dmax=5; | |
755 | Int_t naccepted =1; | |
756 | for (Int_t i=0; i<fDimX; i++) | |
757 | for (Int_t j=0;j<fDimY; j++) | |
758 | { | |
759 | fStackIndex=0; | |
760 | if (IsMaximum(i,j) == kTRUE){ | |
761 | SetSigma2(i,j,fCurrentSigmaX2,fCurrentSigmaY2); | |
73042f01 | 762 | AddToStack(i,j,GetSignal(i,j)); |
cc80f89e | 763 | |
764 | //loop over different distance | |
765 | naccepted =1; | |
766 | for ( Int_t dd =1;((dd<=dmax) && (naccepted>0));dd++){ | |
767 | naccepted=0; | |
768 | for (Int_t di = -dd;di<=dd;di++){ | |
67d37b32 | 769 | Int_t ddj = dd-TMath::Abs(di); |
cc80f89e | 770 | Int_t sigstart = (ddj>0) ? -1 : 0; |
771 | for (Int_t sig = sigstart;sig<=1;sig+=2){ | |
772 | Int_t dj= sig*ddj; | |
773 | AliCell *cell= GetCell(i+di,j+dj); | |
73042f01 | 774 | Int_t signal = GetSignal(i+di,j+dj); |
cc80f89e | 775 | if (cell==0) continue; |
776 | Int_t index[6]; | |
777 | index[0]=di; | |
778 | index[1]=dj; | |
779 | if (dd>2) { | |
780 | SetBlockIndex(index); //adjust index to control | |
73042f01 | 781 | if ( IsBorder(fIndex,i+index[2],j+index[3]) || |
782 | IsBorder(fIndex,i+index[4],j+index[5])) { | |
783 | cell->SetBorder(fIndex); | |
cc80f89e | 784 | continue; |
785 | } | |
786 | } | |
73042f01 | 787 | if ( signal<=fThreshold ){ |
cc80f89e | 788 | //if under threshold |
73042f01 | 789 | cell->SetThBorder(fIndex); |
790 | if (fBFit==kTRUE) AddToStack(i+di,j+dj,signal); | |
cc80f89e | 791 | continue; |
792 | } | |
793 | naccepted++; | |
794 | if (CheckIfDirBorder(fCurrentMaxX,fCurrentMaxY,i+di,j+dj) == kTRUE) { | |
73042f01 | 795 | if (fBFit==kFALSE) AddToStack(i+di,j+dj,signal/2); |
cc80f89e | 796 | continue; |
797 | } | |
73042f01 | 798 | AddToStack(i+di,j+dj,signal); |
cc80f89e | 799 | |
800 | } //loop over sig dj | |
801 | } //loop over di | |
802 | ||
803 | }//loop over dd | |
804 | } //if there is maximum | |
805 | //if there exists more then 2 digits cluster | |
806 | if (fStackIndex >2 ){ | |
807 | if (fBFit==kFALSE) GetClusterStatistic(c); | |
808 | else GetClusterFit(c); | |
809 | //write some important chracteristic area of cluster | |
810 | // | |
811 | Transform(&c); | |
812 | //write cluster information to array | |
73042f01 | 813 | TClonesArray &lclusters = *fClustersArray; |
cc80f89e | 814 | new(lclusters[fIndex++]) AliDigitCluster(c); |
815 | // cout<<"fx="<<c.fX<<" fy"<<c.fY<<"\n"; | |
816 | } | |
817 | } //lopp over all digits | |
818 | ||
73042f01 | 819 | return fClustersArray; |
cc80f89e | 820 | } |
821 | ||
822 | ||
823 | ||
824 | ||
825 | ||
826 | ||
73042f01 | 827 | void AliTPCClusterFinder::Adjacent(Int_t i,Int_t j) |
cc80f89e | 828 | { |
829 | // | |
830 | //recursive agorithm program | |
831 | // | |
832 | if (fBDistType==kTRUE) { | |
833 | Float_t delta = (i-fCurrentMaxX)*(i-fCurrentMaxX)/fCurrentSigmaX2; | |
834 | delta+=(j-fCurrentMaxY)*(j-fCurrentMaxY)/fCurrentSigmaY2; | |
835 | if (delta > fMulSigma2) { | |
73042f01 | 836 | SetDirBorder(fIndex,i,j); |
cc80f89e | 837 | return; |
838 | } | |
839 | } | |
840 | AliCell *cell = GetCell(i,j); | |
73042f01 | 841 | Int_t signal = GetSignal(i,j); |
842 | Int_t q=signal; | |
843 | cell->SetChecked(fIndex); | |
cc80f89e | 844 | if ( (q>fThreshold) || (fBFit==kTRUE)) AddToStack(i,j,q); |
845 | if ( q >fThreshold ) | |
846 | { | |
847 | ||
848 | AliCell * newcel; | |
849 | newcel = GetCell(i-1,j); | |
73042f01 | 850 | if (newcel !=0) if (!newcel->IsChecked(fIndex) ) Adjacent(i-1,j); |
cc80f89e | 851 | newcel = GetCell(i,j-1); |
73042f01 | 852 | if (newcel !=0) if (!newcel->IsChecked(fIndex) ) Adjacent(i,j-1); |
cc80f89e | 853 | newcel = GetCell(i+1,j); |
73042f01 | 854 | if (newcel !=0) if (!newcel->IsChecked(fIndex) ) Adjacent(i+1,j); |
cc80f89e | 855 | newcel = GetCell(i,j+1); |
73042f01 | 856 | if (newcel !=0) if (!newcel->IsChecked(fIndex) ) Adjacent(i,j+1); |
cc80f89e | 857 | } |
73042f01 | 858 | else cell->SetThBorder(fIndex); |
cc80f89e | 859 | } |
860 | ||
861 | ||
862 | ||
73042f01 | 863 | AliH2F * AliTPCClusterFinder::DrawHisto( const char *option=0, |
cc80f89e | 864 | Float_t x1, Float_t x2, Float_t y1, Float_t y2) |
865 | { | |
866 | // | |
867 | //draw digits in given array | |
868 | // | |
869 | //make digits histo | |
870 | char ch[30]; | |
871 | sprintf(ch,"Cluster finder digits "); | |
872 | if ( (fDimX<1)|| (fDimY<1)) { | |
873 | return 0; | |
874 | } | |
875 | AliH2F * his = new AliH2F(ch,ch,fDimX,fX1,fX2,fDimY,fY1,fY2); | |
876 | //set histogram values | |
877 | for (Int_t i = 0; i<fDimX;i++) | |
878 | for (Int_t j = 0; j<fDimY;j++){ | |
879 | Float_t x = ItoX(i); | |
880 | Float_t y= JtoY(j); | |
881 | his->Fill(x,y,GetSignal(i,j)); | |
882 | } | |
883 | if (x1>=0) { | |
884 | AliH2F *h2fsub = his->GetSubrange2d(x1,x2,y1,y2); | |
885 | delete his; | |
886 | his=h2fsub; | |
887 | } | |
888 | if (his==0) return 0; | |
889 | if (option!=0) his->Draw(option); | |
890 | else his->Draw(); | |
891 | return his; | |
892 | } | |
893 | ||
894 | ||
73042f01 | 895 | void AliTPCClusterFinder::DrawCluster( |
cc80f89e | 896 | Int_t color, Int_t size, Int_t style) |
897 | { | |
898 | ||
899 | if (fClustersArray==0) return; | |
900 | //draw marker for each of cluster | |
901 | Int_t ncl=fClustersArray->GetEntriesFast(); | |
902 | for (Int_t i=0;i<ncl;i++){ | |
67d37b32 | 903 | AliComplexCluster *cl = (AliComplexCluster*)fClustersArray->UncheckedAt(i); |
cc80f89e | 904 | TMarker * marker = new TMarker; |
905 | marker->SetX(cl->fX); | |
906 | marker->SetY(cl->fY); | |
907 | marker->SetMarkerSize(size); | |
908 | marker->SetMarkerStyle(style); | |
909 | marker->SetMarkerColor(color); | |
910 | marker->Draw(); | |
911 | } | |
912 | } | |
913 | ||
914 | ||
915 | ||
73042f01 | 916 | AliH2F * AliTPCClusterFinder::DrawBorders( const char *option, AliH2F *h, Int_t type , |
cc80f89e | 917 | Float_t x1, Float_t x2, Float_t y1, Float_t y2) |
918 | { | |
919 | // | |
920 | //draw digits in given array | |
921 | // | |
922 | //make digits histo | |
923 | char ch[30]; | |
924 | sprintf(ch,"Cluster finder digits borders"); | |
925 | if ( (fDimX<1)|| (fDimY<1)) { | |
926 | return 0; | |
927 | } | |
928 | AliH2F * his; | |
929 | if (h!=0) his =h; | |
930 | else his = new AliH2F(ch,ch,fDimX,fX1,fX2,fDimY,fY1,fY2); | |
931 | //set histogram values | |
932 | for (Int_t i = 0; i<fDimX;i++) | |
933 | for (Int_t j = 0; j<fDimY;j++){ | |
934 | Float_t x = ItoX(i); | |
935 | Float_t y= JtoY(j); | |
936 | if (((type==1)||(type==0))&&IsMaximum(0,i,j)) his->Fill(x,y,16); | |
937 | if (((type==3)||(type==0))&&(IsDirBorder(0,i,j))) his->Fill(x,y,8); | |
938 | if (((type==4)||(type==0))&&(IsThBorder(0,i,j))) his->Fill(x,y,4); | |
939 | if (((type==2)||(type==0))&&IsBorder(0,i,j)) his->Fill(x,y,1); | |
940 | ||
941 | } | |
942 | ||
943 | if (x1>=0) { | |
944 | AliH2F *h2fsub = his->GetSubrange2d(x1,x2,y1,y2); | |
945 | delete his; | |
946 | his=h2fsub; | |
947 | } | |
948 | if (his==0) return 0; | |
949 | if (option!=0) his->Draw(option); | |
950 | else his->Draw(); | |
951 | return his; | |
952 | } |