Aim: implement a Gaussian centered convolution kernel. More...

#include <DGtal/geometry/surfaces/estimation/BasicConvolutionWeights.h>

Public Types
typedef TDistance	Distance
	Inner type for the topological distance.

Public Member Functions
	GaussianConvolutionWeights (const double sigma)

double	operator() (const Distance &aDisplacment) const

Data Fields
double	mySigma
	Internal Sigma value;.

double	myCoef
	Precomputed constant coefs.

double	myCoef2

Detailed Description

template<typename TDistance>
class DGtal::deprecated::GaussianConvolutionWeights< TDistance >

Aim: implement a Gaussian centered convolution kernel.

Description of template class 'GaussianConvolutionWeights'

Warning: moved to deprecated since 0.7. Please consider using LocalEstimatorFromFunctorAdapter.

Template Parameters

TDistance type for topological distances.

Definition at line 99 of file BasicConvolutionWeights.h.

Member Typedef Documentation

◆ Distance

template<typename TDistance >

typedef TDistance DGtal::deprecated::GaussianConvolutionWeights< TDistance >::Distance

Inner type for the topological distance.

Definition at line 105 of file BasicConvolutionWeights.h.

Constructor & Destructor Documentation

◆ GaussianConvolutionWeights()

template<typename TDistance >

DGtal::deprecated::GaussianConvolutionWeights< TDistance >::GaussianConvolutionWeights ( const double sigma )

inline

Constructor

Parameters

sigma Gaussian sigma parameter.

Definition at line 112 of file BasicConvolutionWeights.h.

                                                    : mySigma(sigma)
      {
        myCoef = 1.0/(mySigma * sqrt(2.0*M_PI));
        myCoef2 = 1.0/(2.0*M_PI);
      }

References DGtal::deprecated::GaussianConvolutionWeights< TDistance >::myCoef, DGtal::deprecated::GaussianConvolutionWeights< TDistance >::myCoef2, and DGtal::deprecated::GaussianConvolutionWeights< TDistance >::mySigma.

Member Function Documentation

◆ operator()()

template<typename TDistance >

double DGtal::deprecated::GaussianConvolutionWeights< TDistance >::operator() ( const Distance & aDisplacment ) const

inline

Return a Gaussian weight from a distance to the gaussian function center.

Parameters

aDisplacment distance to the center

Returns: the weight

Definition at line 126 of file BasicConvolutionWeights.h.

      {
        return myCoef*exp(-NumberTraits<Distance>::castToDouble(aDisplacment)*
                          NumberTraits<Distance>::castToDouble(aDisplacment)*myCoef2);
      }