#define CLITKSIGNAL_CXX
#include "clitkSignal.h"
+#include <fstream>
namespace clitk {
+ //---------------------------------------------------------------------
+ Signal::Signal(const Signal & s) { // Copy
+ CopyFrom(s);
+ }
+ //---------------------------------------------------------------------
+
+
+ //---------------------------------------------------------------------
+ void Signal::CopyFrom(const Signal & s) {
+ SetSamplingPeriod(s.GetSamplingPeriod());
+ // DD(GetSamplingPeriod());
+ resize(s.size());
+ for(uint i=0; i<size(); i++) {
+ m_Data[i] = s[i];
+ }
+ }
+ //---------------------------------------------------------------------
+
+
+
//---------------------------------------------------------------------
void Signal::Read(string fileName){
- ifstream signalStream(fileName.c_str());
+ std::ifstream signalStream(fileName.c_str());
SignalValueType point;
if(!signalStream.is_open()){
std::cerr << "ERROR: Couldn't open file " << fileName << " in Signal::Read" << std::endl;
//---------------------------------------------------------------------
- void Signal::Read(string fileName, int col){
+ bool Signal::Read(string fileName, int col){
ifstream signalStream(fileName.c_str());
SignalValueType point;
if(!signalStream.is_open()){
std::cerr << "ERROR: Couldn't open file " << fileName << " in Signal::Read" << std::endl;
- return;
+ return false;
}
skipComment(signalStream);
while(!signalStream.eof()) {
// Read one line
std::string line;
std::getline(signalStream, line);
-
+
// Get column nb col
istringstream iss(line);
for(int i=0; i<col; i++) { // skip col-1 first column
string sub;
iss >> sub;
+ // DD(sub);
+ // DD(sub.size());
+ // DD(iss.bad());
+ if (!iss) {
+ std::cerr << "ERROR: no col n" << col << " in the line '" << line << "' ?" << std::endl;
+ return false; //exit(0);
+ }
}
iss >> point;
- if (!iss) {
- std::cerr << "ERROR: no col n" << col << " in the line '" << line << "' ?" << std::endl;
- exit(0);
- }
skipComment(signalStream);
m_Data.push_back(point);
// cout << point << endl;
}
signalStream.close();
SetSamplingPeriod(1.);
+ return true;
}
//---------------------------------------------------------------------
Signal Signal::ConvertImageToSignal( Signal::ImageType::Pointer image)
{
//empty signal
- Signal signal;
+ Signal signal;
- //make an image iterator
- itk::ImageRegionConstIterator<ImageType> it(image,image->GetLargestPossibleRegion());
- it.Begin();
+ //make an image iterator
+ itk::ImageRegionConstIterator<ImageType> it(image,image->GetLargestPossibleRegion());
+ it.Begin();
- //copy
- while(!it.IsAtEnd())
- {
- signal.push_back(it.Get());
- ++it;
- }
+ //copy
+ while(!it.IsAtEnd())
+ {
+ signal.push_back(it.Get());
+ ++it;
+ }
- //Spacing
- signal.SetSamplingPeriod(image->GetSpacing()[0]);
+ //Spacing
+ signal.SetSamplingPeriod(image->GetSpacing()[0]);
- return signal;
+ return signal;
}
//---------------------------------------------------------------------
//Convert 1D signal to image
Signal::ImageType::Pointer Signal::ConvertSignalToImage(Signal signal)
{
- //empty image
- ImageType::Pointer image =ImageType::New();
- ImageType::RegionType region;
- ImageType::RegionType::IndexType index;
- index[0]=0;
- ImageType::RegionType::SizeType size;
- size[0]=signal.size();
-
- region.SetIndex(index);
- region.SetSize(size);
-
- image->SetRegions(region);
- image->Allocate();
-
- //make an image iterator
- itk::ImageRegionIterator<ImageType> mIt(image,image->GetLargestPossibleRegion());
- mIt.Begin();
-
- //make a signal iterator
- Signal::const_iterator sIt=signal.begin();
-
- //copy
- while(sIt!=signal.end())
- {
- mIt.Set(*sIt);
- sIt++;++mIt;
- }
+ //empty image
+ ImageType::Pointer image =ImageType::New();
+ ImageType::RegionType region;
+ ImageType::RegionType::IndexType index;
+ index[0]=0;
+ ImageType::RegionType::SizeType size;
+ size[0]=signal.size();
+
+ region.SetIndex(index);
+ region.SetSize(size);
+
+ image->SetRegions(region);
+ image->Allocate();
+
+ //make an image iterator
+ itk::ImageRegionIterator<ImageType> mIt(image,image->GetLargestPossibleRegion());
+ mIt.Begin();
+
+ //make a signal iterator
+ Signal::const_iterator sIt=signal.begin();
+
+ //copy
+ while(sIt!=signal.end())
+ {
+ mIt.Set(*sIt);
+ sIt++;++mIt;
+ }
- //spacing
- ImageType::SpacingType spacing;
- spacing[0]=signal.GetSamplingPeriod();
- image->SetSpacing(spacing);
+ //spacing
+ ImageType::SpacingType spacing;
+ spacing[0]=signal.GetSamplingPeriod();
+ image->SetSpacing(spacing);
- return image;
+ return image;
}
//---------------------------------------------------------------------
iterator itD;
itD=mul.begin();
while(it!=end()){
- *it *= *itD;
- it++;itD++;
+ *it *= *itD;
+ it++;itD++;
}
return *this;
}
//---------------------------------------------------------------------
- //---------------------------------------------------------------------
+ //---------------------------------------------------------------------
// Signal Signal::LowPassFilter (double sampPeriod, double cutOffFrequency )
// {
// //output
//Search the first value in extrema not 0.5
while(m_Data[beginCycle]!=1)
{
- beginCycle++;
+ beginCycle++;
}
//We search the corresponding end
while(endCycle != size() && m_Data[endCycle]!=1){
endCycle++;
- }
+ }
//============================================================
//Calculate phase at the beginning (before the first extremum)
//the last part is shorter, copy the last cycle values
else{
phase[i] = phase[i -(endCycle-beginCycle)];
- }
+ }
}
//===================================================================
//Search the first value in extrema not 0.5
while(m_Data[beginCycle]!=1)
{
- beginCycle++;
+ beginCycle++;
}
//We search the corresponding end
while(endCycle != size() && m_Data[endCycle]!=1){
endCycle++;
- }
+ }
//===================================================================
//Calculate phase at the beginning (before the first extremum)
//the last part is shorter, copy the last cycle values
else{
phase[i] = phase[i -(endCycle-beginCycle)]+1;
- }
+ }
}
//===================================================================
iterator monPhaseIt=monPhase.begin();
iterator extremaIt =begin();
while (extremaIt!= end())
- {
- if (*extremaIt==0.) *phaseIt=eIPhaseValue+floor(*monPhaseIt);
- else if (*extremaIt==1.) *phaseIt=eEPhaseValue+floor(*monPhaseIt);
- extremaIt++; phaseIt++;monPhaseIt++;
- }
+ {
+ if (*extremaIt==0.) *phaseIt=eIPhaseValue+floor(*monPhaseIt);
+ else if (*extremaIt==1.) *phaseIt=eEPhaseValue+floor(*monPhaseIt);
+ extremaIt++; phaseIt++;monPhaseIt++;
+ }
return phase;
//---------------------------------------------------------------------
+
+// //---------------------------------------------------------------------
+// Signal Signal::ApproximateScatteredValuesWithBSplines(unsigned int splineOrder, unsigned int numberOfControlPoints)
+// {
+// //filter requires a vector pixelType
+// typedef itk::PointSet<VectorType, 1> PointSetType;
+// PointSetType::Pointer pointSet=PointSetType::New();
+// typedef PointSetType::PointType PointType;
+
+// unsigned int i=0;
+// unsigned int pointIndex=0;
+// while (i< size())
+// {
+// if(m_Data[i]!=-1)
+// {
+// PointType p;
+// p[0]= i;//JV spacing is allways 1
+// pointSet->SetPoint( pointIndex, p );
+// pointSet->SetPointData( pointIndex, m_Data[i] );
+// pointIndex++;
+// }
+// i++;
+// }
+// =======
// //---------------------------------------------------------------------
// Signal Signal::ApproximateScatteredValuesWithBSplines(unsigned int splineOrder, unsigned int numberOfControlPoints)
// {
//---------------------------------------------------------------------
+ //---------------------------------------------------------------------
+ void Signal::ResampleWithTimeWarpTo(clitk::Signal & output, bool lin) const {
+ double sp = output.GetSamplingPeriod()/output.GetTotalTimeDuration()*GetTotalTimeDuration();
+ // DD(GetTotalTimeDuration());
+ // DD(output.GetTotalTimeDuration());
+ // DD(sp);
+ if (lin) {
+ for(uint i=0; i<output.size(); i++) {
+ output[i] = GetValueAtLin(i*sp);
+ }
+ }
+ else {
+ for(uint i=0; i<output.size(); i++) {
+ output[i] = GetValueAtNN(i*sp);
+ }
+ }
+ }
+ //---------------------------------------------------------------------
+ //---------------------------------------------------------------------
+ double Signal::GetValueAtNN(double t) const {
+ int index = (int)lrint(t/GetSamplingPeriod()); // closest point
+ // DD(index);
+ if ((index<0) || (index>=(int)size())) {
+ FATAL("out of bound for time " << t << "in this signal having "
+ << size() << " values with sampling " << GetSamplingPeriod() << std::endl);
+ }
+ return (*this)[index];
+ }
+ //---------------------------------------------------------------------
+ //---------------------------------------------------------------------
+ double Signal::GetValueAtLin(double t) const {
+ double ti = t/GetSamplingPeriod();
+ // DD(t);
+// DD(ti);
+ int index = (int)floor(ti); // floor point
+ // DD(index);
+ if (index<0) {
+ FATAL("out of bound for time " << t << " in this signal having "
+ << size() << " values with sampling " << GetSamplingPeriod() << std::endl);
+ }
+ if (index>=(int)size()-1) { // last value
+ return (*this)[index];
+ }
+ // DD(index);
+// DD(ti-index);
+// DD((*this)[index]);
+// DD((*this)[index+1]);
+ return ((ti-index)*((*this)[index+1]) + (1.0-(ti-index))*((*this)[index]));
+ }
+ //---------------------------------------------------------------------
+ //---------------------------------------------------------------------
+ void clitk::Signal::Shift(int d, int length) {
+ std::cout << "Shift d=" << d << " length = " << length << std::endl;
+ // int d = (int)lrint(s/GetSamplingPeriod()); // closest integer delta
+ // DD(d);
+ clitk::Signal temp;
+ temp.resize(length);//(uint)size());
+ temp.SetSamplingPeriod(GetSamplingPeriod());
+ for(uint i=0; i<temp.size(); i++) {
+ int j = (i+d) % size();
+ // DD(i);
+ // DD(j);
+ temp[i] = (*this)[j];
+ }
+ CopyFrom(temp);
+ }
+ //---------------------------------------------------------------------
+ //---------------------------------------------------------------------
+ double Signal::UnormalizedXcov(const Signal &input2, Signal &output) const {
+ unsigned int N;
+ N=size();
+ unsigned int max;
+ max = 2*N;
+ output.resize(max);
+ assert(size() == input2.size()); //les signaux à comparer doivent avoir la même taille
+
+
+ //calcul de la moyenne
+ double mean1=0.,mean2=0.;
+ mean1=this->GetGlobalMean();
+ mean2=input2.GetGlobalMean();
+
+ for (unsigned int k= 0;k<N;k++){
+ double value=0.;
+ for (unsigned int n=0;n<=k;n++){
+ value=value+((*this)[n] - mean1)*(input2[n+N-k-1] - mean2);
+ }
+ output[k]=value;
+ }
+ for (unsigned int k=N;k<max-1;k++){
+ double value=0.;
+ for (unsigned int n=0;n<max-k-1;n++){
+ value=value+((*this)[n+k-N+1] - mean1)*(input2[n] - mean2); //*input2??
+ }
+ output[k]=value;
+ }
+ double Coef;
+ Coef = output[N-1];
+ return Coef;
+
+ }
+
+ //---------------------------------------------------------------------
+ //---------------------------------------------------------------------
+ double Signal::UnormalizedCorrelation(const Signal &input2) const {
+ unsigned int N;
+ N=size();
+ Signal output;
+ output.resize(N);
+ assert(size() == input2.size()); //les signaux à comparer doivent avoir la même taille
+
+ //calcul de la moyenne
+ double mean1=0.,mean2=0.;
+ mean1=this->GetGlobalMean();
+ mean2=input2.GetGlobalMean();
+ double value=0.;
+ for (unsigned int n=0;n<N;n++){
+ value=value+((*this)[n] - mean1)*(input2[n] - mean2);
+ }
+ return value;
+
+ }
+ //---------------------------------------------------------------------
+ //---------------------------------------------------------------------
+ double Signal::Correlation(const Signal &input2) const {
+
+ assert(size() == input2.size()); //les signaux à comparer doivent avoir la même taille
+
+ double cc11,cc22,cc;
+ Signal input1(*this);
+
+ cc=this->UnormalizedCorrelation(input2);
+ cc11=this->UnormalizedCorrelation(input1);
+ cc22=input2.UnormalizedCorrelation (input2);
+ cc=cc/sqrt(cc11*cc22);
+ std::cout<<"coefficient de corrélation : "<<cc<<std::endl;
+
+ return cc;
+
+ }
+
+
+
+ //---------------------------------------------------------------------
+ //---------------------------------------------------------------------
+
+ Signal Signal::Xcov(const Signal &input2 , int &shift, double &coef, double &cc) {
+
+ Signal temp_output,output;
+ unsigned int N;
+ N=size();
+ unsigned int max;
+ max = 2*N;
+ output.resize(max);
+ temp_output.resize(max);
+ double cc11,cc22;
+ Signal input1(*this);
+
+ cc=this->UnormalizedXcov(input2,output);
+ cc11=this->UnormalizedCorrelation(input1);
+ cc22=input2.UnormalizedCorrelation (input2);
+
+ unsigned int tailleOutput;
+ tailleOutput=output.size();
+ for (unsigned int k= 0;k<tailleOutput;k++){
+ output[k]=output[k]/sqrt(cc11 * cc22 );
+ }
+
+ coef=output[0];
+ shift=0;
+ for (unsigned int k= 0;k<tailleOutput;k++){
+ if(output[k]>coef){
+ coef=output[k];
+ shift=k;
+ }
+ }
+ cc=this->Correlation(input2);
+ shift=shift-N+1;
+ std::cout<<"shift: "<<shift<<std::endl;
+ std::cout<<"XcovMax: "<<coef<<std::endl;
-
-
-
-
+
+ return output;
+ }
+
+ //---------------------------------------------------------------------
+ //---------------------------------------------------------------------
+
+
// double Signal::Compare(Signal & sigRef) {
// double coeffCorrParam[5]={0.,0.,0.,0.,0.};
// return ((double)(samp)/((double)size()*m_SamplingPeriod));
// }
-// //---------------------------------------------------------------------
-// Signal Signal::limPhaseDE(eIPhaseValue, eEPhaseValue)
-// {
+ // //---------------------------------------------------------------------
+ // Signal Signal::limPhaseDE(eIPhaseValue, eEPhaseValue)
+ // {
-// //Create an empty signal
-// phase.resize(size());
-
-// iterator phaseIt=initialPhaseValues.begin();
-// iterator monPhaseIt=monPhase.begin();
-// iterator extremaIt =begin();
-
-// while (extremaIt!= end())
-// {
-// if (*extremaIt==0.) *phaseIt=eIPhaseValue+floor(*monPhaseIt);
-// else if (*extremaIt==1.) *phaseIt=eEPhaseValue+floor(*monPhaseIt);
-// extremaIt++; phaseIt++;monPhaseIt++;
-// }
+ // //Create an empty signal
+ // phase.resize(size());
+
+ // iterator phaseIt=initialPhaseValues.begin();
+ // iterator monPhaseIt=monPhase.begin();
+ // iterator extremaIt =begin();
+
+ // while (extremaIt!= end())
+ // {
+ // if (*extremaIt==0.) *phaseIt=eIPhaseValue+floor(*monPhaseIt);
+ // else if (*extremaIt==1.) *phaseIt=eEPhaseValue+floor(*monPhaseIt);
+ // extremaIt++; phaseIt++;monPhaseIt++;
+ // }
-// }
+ // }
}
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