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/afw/detection/Footprint.h"
#include "lsst/afw/math/SpatialCell.h"
#include "lsst/afw/math/FunctionLibrary.h"
#include "lsst/afw/geom/Point.h"
#include "lsst/afw/geom/Box.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
	lsst
	Remove all non-astronomical counts from the Chunk Exposure's pixels.
	lsst::meas
	lsst::meas::algorithms
	Fit spatial kernel using approximate fluxes for candidates, and solving a linear system of equations.

Functions
template<typename PixelT >
std::pair < afwMath::LinearCombinationKernel::Ptr, std::vector< double > >	lsst::meas::algorithms::createKernelFromPsfCandidates (afwMath::SpatialCellSet const &psfCells, lsst::afw::geom::Extent2I const &dims, lsst::afw::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::Ptr and a list of eigenvalues resulting from analysing the provided SpatialCellSet. More...
template<typename PixelT >
int	lsst::meas::algorithms::countPsfCandidates (afwMath::SpatialCellSet const &psfCells, int const nStarPerCell)
	Count the number of candidates in use. More...
void	lsst::meas::algorithms::setSpatialParameters (afwMath::Kernel *kernel, std::vector< double > const &coeffs)
	Fit a Kernel's spatial variability from a set of stars. More...
void	lsst::meas::algorithms::setSpatialParameters (afwMath::Kernel *kernel, Eigen::VectorXd const &vec)
	Fit a Kernel's spatial variability from a set of stars. More...
template<typename PixelT >
std::pair< bool, double >	lsst::meas::algorithms::fitSpatialKernelFromPsfCandidates (afwMath::Kernel *kernel, afwMath::SpatialCellSet const &psfCells, int const nStarPerCell, double const tolerance, double const lambda)
	Fit spatial kernel using full-nonlinear optimization to estimate candidate amplitudes. More...
template<typename PixelT >
std::pair< bool, double >	lsst::meas::algorithms::fitSpatialKernelFromPsfCandidates (afwMath::Kernel *kernel, afwMath::SpatialCellSet const &psfCells, bool const doNonLinearFit, int const nStarPerCell, double const tolerance, double const lambda)
template<typename MaskedImageT >
double	lsst::meas::algorithms::subtractPsf (afwDetection::Psf const &psf, MaskedImageT *data, double x, double y, double psfFlux)
	Subtract a PSF from an image at a given position. More...
template<typename Image >
std::pair< std::vector< double > , afwMath::KernelList >	lsst::meas::algorithms::fitKernelParamsToImage (afwMath::LinearCombinationKernel const &kernel, Image const &image, afwGeom::Point2D const &pos)
	Fit a LinearCombinationKernel to an Image, allowing the coefficients of the components to vary. More...
template<typename Image >
std::pair < afwMath::Kernel::Ptr, std::pair< double, double > >	lsst::meas::algorithms::fitKernelToImage (afwMath::LinearCombinationKernel const &kernel, Image const &image, afwGeom::Point2D const &pos)
	Fit a LinearCombinationKernel to an Image, allowing the coefficients of the components to vary. More...

Detailed Description

Implementation of code to determine spatial model of PSF.

Definition in file SpatialModelPsf.cc.

Variable Documentation

Eigen::MatrixXd _A

Definition at line 880 of file SpatialModelPsf.cc.

Eigen::VectorXd _b

Definition at line 881 of file SpatialModelPsf.cc.

Eigen::MatrixXd _basisDotBasis

Definition at line 882 of file SpatialModelPsf.cc.

std::vector<typename KImage::Ptr> _basisImgs

Definition at line 879 of file SpatialModelPsf.cc.

PsfImagePca<MaskedImageT>* _imagePca

Definition at line 127 of file SpatialModelPsf.cc.

afwMath::LinearCombinationKernel const& _kernel

Definition at line 875 of file SpatialModelPsf.cc.

int _n

mutable

Definition at line 164 of file SpatialModelPsf.cc.

int const _nComponents

Definition at line 878 of file SpatialModelPsf.cc.

int const _nSpatialParams

Definition at line 877 of file SpatialModelPsf.cc.

double _tau2

Definition at line 876 of file SpatialModelPsf.cc.