backcor.cpp File Reference

Baseline estimation using iterative polynomial fitting with a non-quadratic cost function(Backcor algorithm)(implementation). More...

#include <cmath>
#include <functional>
#include "../misc/polyfit.h"
#include "backcor.h"

Go to the source code of this file.

Functions
const std::vector< double >	sablib::BaselineBackcor (const std::vector< double > &y, const unsigned int polyorder, const BackcorFunc func=BackcorFunc::ATQuad, const double s=1, const double alpha=0.99 *0.5, const unsigned int loop=50, const double eps=1.0e-3)
	Performs baseline estimation using iterative polynomial fitting with a non-quadratic cost function (Backcor).

Detailed Description

Baseline estimation using iterative polynomial fitting with a non-quadratic cost function(Backcor algorithm)(implementation).

Author

Izadori

Definition in file backcor.cpp.

Function Documentation

BaselineBackcor()

const std::vector< double > sablib::BaselineBackcor	(	const std::vector< double > &	y,
		const unsigned int	polyorder,
		const BackcorFunc	func = BackcorFunc::ATQuad,
		const double	s = 1,
		const double	alpha = 0.99 *0.5,
		const unsigned int	loop = 50,
		const double	eps = 1.0e-3 )

Performs baseline estimation using iterative polynomial fitting with a non-quadratic cost function (Backcor).

This algorithm fits a polynomial of order polyorder to the signal y. In each iteration, the signal is modified based on the chosen cost function func to progressively estimate the background.

Parameters

y	The input data vector (signal to be processed).
polyorder	The order of the polynomial to be fitted.
func	The type of cost function to use (default: ATQuad).
s	Threshold parameter for the cost function (default: 1.0).
alpha	Control parameter for the iterative update (default: 0.99 * 0.5). Should be in range [0, 1].
loop	The maximum number of iterations (default: 50).
eps	Convergence threshold for the relative change in the estimated baseline (default: 1.0e-3).

Returns

A vector of the same size as y containing the estimated baseline.

Exceptions

std::invalid_argument

One or more parameters are wrong.

Definition at line 20 of file backcor.cpp.