File WarpedPsf.h¶
-
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
- Note
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.
- Note
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.
-
namespace
meas -
namespace
algorithms -
class
WarpedPsf: public lsst::meas::algorithms::ImagePsf - #include <WarpedPsf.h>
A Psf class that maps an arbitrary Psf through a coordinate transformation.
If K_0(x,x’) is the unwarped PSF, and f is the coordinate transform, then the warped PSF is defined by
K(f(x),f(x’)) = K_0(x,x’) (*)
We linearize the coordinate transform in the vicinity of the point where the PSF is computed. The definition (*) does not include the Jacobian of the transformation, since the afw convention is that PSF’s are normalized to have integral 1 anyway.
Public Functions
-
lsst::meas::algorithms::WarpedPsf::WarpedPsf(CONST_PTR( afw::detection::Psf ) undistortedPsf, CONST_PTR( afw::geom::TransformPoint2ToPoint2 ) distortion, CONST_PTR( afw::math::WarpingControl ) control) Construct WarpedPsf from unwarped psf and distortion.
If p is the nominal pixel position, and p’ is the true position on the sky, then our convention for the transform is that p’ = distortion.applyForward(p)
-
lsst::meas::algorithms::WarpedPsf::WarpedPsf(CONST_PTR( afw::detection::Psf ) undistortedPsf, CONST_PTR( afw::geom::TransformPoint2ToPoint2 ) distortion, std::string const & kernelName = "lanczos3", unsigned int cache = 10000)
-
virtual geom::Point2D
getAveragePosition() const Return the average of the positions of the stars that went into this Psf.
For WarpedPsf, this is just the transform of the undistorted Psf’s average position.
Public Members
-
virtual int height lsst::meas::algorithms::WarpedPsf::const
-
-
class
-
namespace