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Laplace filter positive-definite and with squared regulator

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This commit is contained in:
Antonin Portelli 2025-04-21 15:31:13 -03:00
parent 89b540d074
commit 4988f351f2
2 changed files with 5 additions and 6 deletions
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6
lib/LatAnalyze/Physics/DataFilter.cpp
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@ -66,18 +66,18 @@ void DataFilter::operator()(DMat &out, const DMat &in)
******************************************************************************/
// constructor ////////////////////////////////////////////////////////////////
LaplaceDataFilter::LaplaceDataFilter(const bool downsample)
: DataFilter({1., -2. , 1.}, downsample)
: DataFilter({-1., 2. , -1.}, downsample)
{}
// filtering //////////////////////////////////////////////////////////////////
void LaplaceDataFilter::operator()(DVec &out, const DVec &in, const double lambda)
{
filter_[1] = -2. - lambda;
filter_[1] = 2. + Math::pow<2>(lambda);
DataFilter::operator()(out, in);
}
void LaplaceDataFilter::operator()(DMat &out, const DMat &in, const double lambda)
{
filter_[1] = -2. - lambda;
filter_[1] = 2. + Math::pow<2>(lambda);
DataFilter::operator()(out, in);
}

5
lib/LatAnalyze/Physics/DataFilter.hpp
View File

@ -70,7 +70,7 @@ public:
template <typename MatType, Index o>
double optimiseFunction(const StatArray<MatType, o> &data,
ObjectiveFunction<MatType, o> &fn,
Minimizer &min, const unsigned int nPass = 3);
Minimizer &min);
};
/******************************************************************************
@ -104,8 +104,7 @@ void LaplaceDataFilter::operator()(StatArray<MatType, o> &out,
template <typename MatType, Index o>
double LaplaceDataFilter::optimiseFunction(const StatArray<MatType, o> &data,
ObjectiveFunction<MatType, o> &fn,
Minimizer &min,
const unsigned int nPass)
Minimizer &min)
{
StatArray<MatType, o> fdata(data.size());
DVec init(1);