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LSST Data Management Base Package
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CircularApertureFlux.cc
Go to the documentation of this file.
1// -*- lsst-c++ -*-
2/*
3 * LSST Data Management System
4 * Copyright 2008-2014 LSST Corporation.
5 *
6 * This product includes software developed by the
7 * LSST Project (http://www.lsst.org/).
8 *
9 * This program is free software: you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation, either version 3 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the LSST License Statement and
20 * the GNU General Public License along with this program. If not,
21 * see <http://www.lsstcorp.org/LegalNotices/>.
22 */
23
28
29namespace lsst {
30namespace meas {
31namespace base {
32
34 afw::table::Schema& schema,
35 daf::base::PropertySet& metadata)
36 : ApertureFluxAlgorithm(ctrl, name, schema, metadata) {
37 for (std::size_t i = 0; i < ctrl.radii.size(); ++i) {
38 if (ctrl.radii[i] > ctrl.maxSincRadius) break;
39 SincCoeffs<float>::cache(0.0, ctrl.radii[i]);
40 }
41}
42
44 afw::image::Exposure<float> const& exposure) const {
48 for (std::size_t i = 0; i < _ctrl.radii.size(); ++i) {
49 // Each call to _centroidExtractor within this loop goes through exactly the same error-checking
50 // logic and returns the same result, but it's not expensive logic, so we just call it repeatedly
51 // instead of coming up with a new interface that would allow us to move it outside the loop.
52 ellipse.setCenter(_centroidExtractor(measRecord, getFlagHandler(i)));
53 axes->setA(_ctrl.radii[i]);
54 axes->setB(_ctrl.radii[i]);
55 ApertureFluxAlgorithm::Result result = computeFlux(exposure.getMaskedImage(), ellipse, _ctrl);
56 copyResultToRecord(result, measRecord, i);
57 }
58}
59
60} // namespace base
61} // namespace meas
62} // namespace lsst
An ellipse core for the semimajor/semiminor axis and position angle parametrization (a,...
Definition Axes.h:47
An ellipse defined by an arbitrary BaseCore and a center point.
Definition Ellipse.h:51
void setCenter(lsst::geom::Point2D const &center)
Set the center point.
Definition Ellipse.h:68
std::shared_ptr< BaseCore const > getCorePtr() const
Return the ellipse core.
Definition Ellipse.h:77
A class to contain the data, WCS, and other information needed to describe an image of the sky.
Definition Exposure.h:72
Defines the fields and offsets for a table.
Definition Schema.h:51
Record class that contains measurements made on a single exposure.
Definition Source.h:78
Class for storing generic metadata.
Definition PropertySet.h:67
ApertureFluxAlgorithm(Control const &ctrl, std::string const &name, afw::table::Schema &schema, daf::base::PropertySet &metadata)
Construct the algorithm and add its fields to the given Schema.
void copyResultToRecord(Result const &result, afw::table::SourceRecord &record, int index) const
static Result computeFlux(afw::image::Image< T > const &image, afw::geom::ellipses::Ellipse const &ellipse, Control const &ctrl=Control())
Compute the instFlux (and optionally, uncertanties) within an aperture using the algorithm determined...
ApertureFluxResult Result
Result object returned by static methods.
FlagHandler const & getFlagHandler(int index) const
double maxSincRadius
"Maximum radius (in pixels) for which the sinc algorithm should be used instead of the " "faster naiv...
std::vector< double > radii
"Radius (in pixels) of apertures." ;
virtual void measure(afw::table::SourceRecord &record, afw::image::Exposure< float > const &exposure) const
Measure the configured apertures on the given image.
CircularApertureFluxAlgorithm(Control const &ctrl, std::string const &name, afw::table::Schema &schema, daf::base::PropertySet &metadata)
static void cache(float rInner, float rOuter)
Cache the coefficients for a particular aperture.
T static_pointer_cast(T... args)
T size(T... args)