ImagePsf.cc

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// -*- LSST-C++ -*-
/*
 * LSST Data Management System
 * Copyright 2008-2013 LSST Corporation.
 *
 * This product includes software developed by the
 * LSST Project (http://www.lsst.org/).
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
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 *
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
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#include "lsst/geom/Point.h"
#include "lsst/afw/image/MaskedImage.h"
#include "lsst/afw/table/io/Persistable.cc"
#include "lsst/meas/algorithms/ImagePsf.h"
#include "lsst/meas/base/SdssShape.h"
#include "lsst/meas/base/ApertureFlux.h"
 
namespace lsst {
namespace afw {
namespace table {
namespace io {
 
template std::shared_ptr<meas::algorithms::ImagePsf>
PersistableFacade<meas::algorithms::ImagePsf>::dynamicCast(std::shared_ptr<Persistable> const&);
 
}  // namespace io
}  // namespace table
}  // namespace afw
namespace meas {
namespace algorithms {
 
double ImagePsf::doComputeApertureFlux(double radius, geom::Point2D const& position,
                                       afw::image::Color const& color) const {
    geom::Point2D const center(0.0, 0.0);
    afw::geom::ellipses::Axes const axes(radius, radius);
    afw::geom::ellipses::Ellipse ellipse(axes, center);
    geom::Box2I box(ellipse.computeBBox());
    // perhaps needs a grow here
    afw::image::Image<double> image(*computeKernelImage(position, color, INTERNAL));
    if (!image.getBBox().contains(box)) {
        box.include(image.getBBox());
        afw::image::Image<double> paddedImage(box);
        paddedImage = 0.0;
        paddedImage.assign(image, image.getBBox());
        image = paddedImage;
    }
    base::ApertureFluxResult result = base::ApertureFluxAlgorithm::computeSincFlux(
            image, ellipse, base::ApertureFluxControl());
    return result.instFlux;
}
 
afw::geom::ellipses::Quadrupole ImagePsf::doComputeShape(geom::Point2D const& position,
                                                         afw::image::Color const& color) const {
    std::shared_ptr<Image> image = computeKernelImage(position, color, INTERNAL);
    return meas::base::SdssShapeAlgorithm::computeAdaptiveMoments(
                   *image, geom::Point2D(0.0, 0.0)  // image has origin at the center
                   )
            .getShape();
}
 
}  // namespace algorithms
}  // namespace meas
}  // namespace lsst