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::KernelList >	lsst::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.