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SpatialModelPsf.cc File Reference

Implementation of code to determine spatial model of PSF. More...

#include <numeric>
#include "Eigen/Core"
#include "Eigen/Cholesky"
#include "Eigen/SVD"
#include "lsst/geom/Box.h"
#include "lsst/geom/Point.h"
#include "lsst/afw/detection/Footprint.h"
#include "lsst/afw/math/SpatialCell.h"
#include "lsst/afw/math/FunctionLibrary.h"
#include "lsst/meas/algorithms/ImagePca.h"
#include "lsst/meas/algorithms/SpatialModelPsf.h"
#include "lsst/meas/algorithms/PsfCandidate.h"

Go to the source code of this file.

Classes

class  lsst::meas::algorithms::evalChi2Visitor< PixelT >
 A class to pass around to all our PsfCandidates to evaluate the PSF fit's X^2. More...
 
class  lsst::meas::algorithms::MinimizeChi2< PixelT >
 

Namespaces

namespace  lsst
 
namespace  lsst::meas
 
namespace  lsst::meas::algorithms
 

Functions

template<typename PixelT>
std::pair< std::shared_ptr< afw::math::LinearCombinationKernel >, std::vector< double > > lsst::meas::algorithms::createKernelFromPsfCandidates (afw::math::SpatialCellSet const &psfCells, lsst::geom::Extent2I const &dims, lsst::geom::Point2I const &xy0, int const nEigenComponents, int const spatialOrder, int const ksize, int const nStarPerCell, bool const constantWeight, int const border)
 Return a Kernel pointer and a list of eigenvalues resulting from analysing the provided SpatialCellSet.
 
template<typename PixelT>
int lsst::meas::algorithms::countPsfCandidates (afw::math::SpatialCellSet const &psfCells, int const nStarPerCell)
 Count the number of candidates in use.
 
void lsst::meas::algorithms::setSpatialParameters (afw::math::Kernel *kernel, std::vector< double > const &coeffs)
 Fit a Kernel's spatial variability from a set of stars.
 
void lsst::meas::algorithms::setSpatialParameters (afw::math::Kernel *kernel, Eigen::VectorXd const &vec)
 Fit a Kernel's spatial variability from a set of stars.
 
template<typename PixelT>
std::pair< bool, double > lsst::meas::algorithms::fitSpatialKernelFromPsfCandidates (afw::math::Kernel *kernel, afw::math::SpatialCellSet const &psfCells, int const nStarPerCell, double const tolerance, double const lambda)
 Fit spatial kernel using full-nonlinear optimization to estimate candidate amplitudes.
 
template<typename PixelT>
std::pair< bool, double > lsst::meas::algorithms::fitSpatialKernelFromPsfCandidates (afw::math::Kernel *kernel, afw::math::SpatialCellSet const &psfCells, bool const doNonLinearFit, int const nStarPerCell, double const tolerance, double const lambda)
 Fit spatial kernel using approximate fluxes for candidates, and solving a linear system of equations.
 
template<typename MaskedImageT>
double lsst::meas::algorithms::subtractPsf (afw::detection::Psf const &psf, MaskedImageT *data, double x, double y, double psfFlux)
 Subtract a PSF from an image at a given position.
 
template<typename Image>
std::pair< std::vector< double >, afw::math::KernelListlsst::meas::algorithms::fitKernelParamsToImage (afw::math::LinearCombinationKernel const &kernel, Image const &image, geom::Point2D const &pos)
 Fit a LinearCombinationKernel to an Image, allowing the coefficients of the components to vary.
 
template<typename Image>
std::pair< std::shared_ptr< afw::math::Kernel >, std::pair< double, double > > lsst::meas::algorithms::fitKernelToImage (afw::math::LinearCombinationKernel const &kernel, Image const &image, geom::Point2D const &pos)
 Fit a LinearCombinationKernel to an Image, allowing the coefficients of the components to vary.
 

Detailed Description

Implementation of code to determine spatial model of PSF.

Definition in file SpatialModelPsf.cc.