lsst.meas.algorithms gee093eeb90+bd18d5426c
KernelPsf.cc
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1// -*- LSST-C++ -*-
2
3#include "lsst/geom/Box.h"
7
8namespace lsst {
9namespace afw {
10namespace table {
11namespace io {
12
15
16} // namespace io
17} // namespace table
18} // namespace afw
19namespace meas {
20namespace algorithms {
21
23KernelPsf::doComputeKernelImage(geom::Point2D const& position, afw::image::Color const& color) const {
24 std::shared_ptr<Psf::Image> im = std::make_shared<Psf::Image>(_kernel->getDimensions());
25 _kernel->computeImage(*im, true, position.getX(), position.getY());
26 return im;
27}
28
29geom::Box2I KernelPsf::doComputeBBox(geom::Point2D const& position, afw::image::Color const& color) const {
30 return _kernel->getBBox();
31}
32
33KernelPsf::KernelPsf(afw::math::Kernel const& kernel, geom::Point2D const& averagePosition)
34 : ImagePsf(!kernel.isSpatiallyVarying()),
35 _kernel(kernel.clone()),
36 _averagePosition(averagePosition) {}
37
39 : ImagePsf(!kernel->isSpatiallyVarying()), _kernel(kernel), _averagePosition(averagePosition) {}
40
41std::shared_ptr<afw::detection::Psf> KernelPsf::clone() const { return std::make_shared<KernelPsf>(*this); }
42
44 return std::make_shared<KernelPsf>(*_kernel->resized(width, height), _averagePosition);
45}
46
47geom::Point2D KernelPsf::getAveragePosition() const { return _averagePosition; }
48
49namespace {
50
51KernelPsfFactory<> registration("KernelPsf");
52
53} // namespace
54
56 static KernelPsfPersistenceHelper instance;
57 return instance;
58}
59
60KernelPsfPersistenceHelper::KernelPsfPersistenceHelper()
61 : schema(),
62 kernel(schema.addField<int>("kernel", "archive ID of nested kernel object")),
63 averagePosition(afw::table::PointKey<double>::addFields(
64 schema, "averagePosition", "average position of stars used to make the PSF", "pixel")) {}
65
66bool KernelPsf::isPersistable() const noexcept { return _kernel->isPersistable(); }
67
68std::string KernelPsf::getPersistenceName() const { return "KernelPsf"; }
69
70std::string KernelPsf::getPythonModule() const { return "lsst.meas.algorithms"; }
71
74 afw::table::BaseCatalog catalog = handle.makeCatalog(keys.schema);
76 record->set(keys.kernel, handle.put(_kernel));
77 record->set(keys.averagePosition, _averagePosition);
78 handle.saveCatalog(catalog);
79}
80
81} // namespace algorithms
82} // namespace meas
83} // namespace lsst
afw::table::Schema schema
afw::table::PointKey< double > averagePosition
Definition: CoaddPsf.cc:353
Utilities for persisting KernelPsf and subclasses thereof.
lsst::geom::Extent2I const getDimensions() const
double computeImage(lsst::afw::image::Image< Pixel > &image, bool doNormalize, double x=0.0, double y=0.0) const
lsst::geom::Box2I getBBox() const
std::shared_ptr< RecordT > addNew()
static std::shared_ptr< T > dynamicCast(std::shared_ptr< Persistable > const &ptr)
io::OutputArchiveHandle OutputArchiveHandle
An intermediate base class for Psfs that use an image representation.
Definition: ImagePsf.h:40
A PersistableFactory for KernelPsf and its subclasses.
KernelPsf(afw::math::Kernel const &kernel, geom::Point2D const &averagePosition=geom::Point2D())
Construct a KernelPsf with a clone of the given kernel.
Definition: KernelPsf.cc:33
bool isPersistable() const noexcept override
Whether this object is persistable; just delegates to the kernel.
Definition: KernelPsf.cc:66
std::shared_ptr< afw::detection::Psf > clone() const override
Polymorphic deep copy.
Definition: KernelPsf.cc:41
std::shared_ptr< afw::detection::Psf > resized(int width, int height) const override
Return a clone with specified kernel dimensions.
Definition: KernelPsf.cc:43
std::string getPersistenceName() const override
Definition: KernelPsf.cc:68
std::string getPythonModule() const override
Definition: KernelPsf.cc:70
void write(OutputArchiveHandle &handle) const override
Definition: KernelPsf.cc:72
geom::Point2D getAveragePosition() const override
Return average position of stars; used as default position.
Definition: KernelPsf.cc:47
def keys(self)
clone
int
Point< double, 2 > Point2D
A read-only singleton struct containing the schema and key used in persistence for KernelPsf.
static KernelPsfPersistenceHelper const & get()
Definition: KernelPsf.cc:55