File GaussianPsf.h¶
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namespace
lsst Class for a simple mapping implementing a generic AstrometryTransform.
Remove all non-astronomical counts from the Chunk Exposure’s pixels.
Forward declarations for lsst::utils::Cache
For details on the Cache class, see the Cache.h file.
It uses a template rather than a pointer so that the derived classes can use the specifics of the transform. The class simplePolyMapping overloads a few routines.
A base class for image defects
Numeric constants used by the Integrate.h integrator routines.
Compute Image Statistics
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Gauss-Kronrod-Patterson quadrature coefficients for use in quadpack routine qng. These coefficients were calculated with 101 decimal digit arithmetic by L. W. Fullerton, Bell Labs, Nov 1981.
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The Statistics class itself can only handle lsst::afw::image::MaskedImage() types. The philosophy has been to handle other types by making them look like lsst::afw::image::MaskedImage() and reusing that code. Users should have no need to instantiate a Statistics object directly, but should use the overloaded makeStatistics() factory functions.
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afw -
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detection -
class
GaussianPsf: public lsst::afw::table::io::PersistableFacade<GaussianPsf>, public lsst::afw::detection::Psf - #include <GaussianPsf.h>
A circularly symmetric Gaussian Psf class with no spatial variation, intended mostly for testing purposes.
This class is essentially an alternate implementation of meas::algorithms::SingleGaussianPsf; While SingleGaussianPsf inherits from ImagePsf and KernelPsf, and hence delegates to those various operations relating to the PSF model image (e.g. computeShape()), GaussianPsf computes these analytically.
Public Functions
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GaussianPsf(int width, int height, double sigma) Constructor for a GaussianPsf
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[in] width: Number of columns in realizations of the PSF at a point.[in] height: Number of rows in realizations of the PSF at a point.[in] sigma: Radius of the Gaussian.
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GaussianPsf(lsst::geom::Extent2I const &dimensions, double sigma) Constructor for a GaussianPsf
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[in] dimensions: Number of columns, rows in realizations of the PSF at a point.[in] sigma: Radius of the Gaussian.
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~GaussianPsf()
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GaussianPsf(GaussianPsf const&)
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GaussianPsf(GaussianPsf&&)
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GaussianPsf &
operator=(GaussianPsf const&)
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GaussianPsf &
operator=(GaussianPsf&&)
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std::shared_ptr<afw::detection::Psf>
clone() const Polymorphic deep copy; should usually be unnecessary because Psfs are immutable.
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std::shared_ptr<afw::detection::Psf>
resized(int width, int height) const Return a clone with specified kernel dimensions.
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lsst::geom::Extent2I
getDimensions() const Return the dimensions of the images returned by computeImage()
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double
getSigma() const Return the radius of the Gaussian.
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bool
isPersistable() const Whether the Psf is persistable; always true.
Protected Functions
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std::string
getPersistenceName() const
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std::string
getPythonModule() const
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void
write(OutputArchiveHandle &handle) const
Private Functions
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std::shared_ptr<Image>
doComputeKernelImage(lsst::geom::Point2D const &position, image::Color const &color) const¶
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double
doComputeApertureFlux(double radius, lsst::geom::Point2D const &position, image::Color const &color) const¶
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class
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