1#ifndef CLASSIC_FIXED_LOW_PASS_FFT_HH
2#define CLASSIC_FIXED_LOW_PASS_FFT_HH
9 void apply(std::vector<double> &LineDensity);
void apply(std::vector< double > &LineDensity)
FixedFFTLowPassFilter(const int &N)
void calc_derivative(std::vector< double > &histogram, const double &h)