AutoPhotometryTask.cpp

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/*
 * AutoPhotometryTask.cpp
 *
 *  Created on: Jul 18, 2016
 *      Author: mkuemmel@usm.lmu.de
 */
 
#include "SEFramework/Aperture/EllipticalAperture.h"
#include "SEFramework/Aperture/TransformedAperture.h"
#include "SEFramework/Source/SourceFlags.h"
#include "SEFramework/Aperture/FluxMeasurement.h"
 
#include "SEImplementation/CheckImages/CheckImages.h"
#include "SEImplementation/Plugin/BlendedFlag/BlendedFlag.h"
#include "SEImplementation/Plugin/SaturateFlag/SaturateFlag.h"
#include "SEImplementation/Plugin/AutoPhotometry/AutoPhotometryFlag.h"
#include <SEImplementation/Plugin/MeasurementFrameInfo/MeasurementFrameInfo.h>
#include <SEImplementation/Plugin/MeasurementFrameImages/MeasurementFrameImages.h>
#include "SEImplementation/Plugin/MeasurementFramePixelCentroid/MeasurementFramePixelCentroid.h"
#include "SEImplementation/Plugin/ShapeParameters/ShapeParameters.h"
#include "SEImplementation/Plugin/KronRadius/KronRadius.h"
#include "SEImplementation/Plugin/Jacobian/Jacobian.h"
#include "SEImplementation/Plugin/SourceIDs/SourceID.h"
#include "SEImplementation/Plugin/AutoPhotometry/AutoPhotometry.h"
#include "SEImplementation/Plugin/AutoPhotometry/AutoPhotometryTask.h"
 
 
namespace SourceXtractor {

 
void AutoPhotometryTask::computeProperties(SourceInterface &source) const {
  const auto& measurement_frame_info = source.getProperty<MeasurementFrameInfo>(m_instance);
  const auto& measurement_frame_images = source.getProperty<MeasurementFrameImages>(m_instance);
 
  auto variance_threshold = measurement_frame_info.getVarianceThreshold();
  auto gain = measurement_frame_info.getGain();
 
  const auto measurement_image = measurement_frame_images.getLockedImage(LayerSubtractedImage);
  const auto variance_map = measurement_frame_images.getLockedImage(LayerVarianceMap);
 
  // get the object center
  const auto& centroid_x = source.getProperty<MeasurementFramePixelCentroid>(m_instance).getCentroidX();
  const auto& centroid_y = source.getProperty<MeasurementFramePixelCentroid>(m_instance).getCentroidY();
 
  // get the shape parameters
  const auto& cxx = source.getProperty<ShapeParameters>().getEllipseCxx();
  const auto& cyy = source.getProperty<ShapeParameters>().getEllipseCyy();
  const auto& cxy = source.getProperty<ShapeParameters>().getEllipseCxy();
 
  // get the jacobian
  const auto& jacobian = source.getProperty<JacobianSource>(m_instance);
 
  // get the kron-radius
  SeFloat kron_radius_auto = m_kron_factor * source.getProperty<KronRadius>().getKronRadius();
  if (kron_radius_auto < m_kron_minrad)
    kron_radius_auto = m_kron_minrad;
 
  // create the elliptical aperture
  auto ell_aper = std::make_shared<TransformedAperture>(
    std::make_shared<EllipticalAperture>(cxx, cyy, cxy, kron_radius_auto),
    jacobian.asTuple());
 
  auto measurement = measureFlux(ell_aper, centroid_x, centroid_y, measurement_image, variance_map, variance_threshold,
                                 m_use_symmetry);
 
  // compute the derived quantities
  auto total_variance = measurement.m_variance;
  if (gain >0.0)
          total_variance += measurement.m_flux / gain;
  auto flux_error = sqrt(total_variance);
  auto mag = measurement.m_flux > 0.0 ? -2.5 * log10(measurement.m_flux) + m_magnitude_zero_point : std::numeric_limits<SeFloat>::quiet_NaN();
  auto mag_error = 1.0857 * flux_error / measurement.m_flux;
 
  // Add the flags from the detection image and from the saturated and blended plugins
  measurement.m_flags |= source.getProperty<AutoPhotometryFlag>().getFlags();
  measurement.m_flags |= Flags::SATURATED * source.getProperty<SaturateFlag>(m_instance).getSaturateFlag();
  measurement.m_flags |= Flags::BLENDED * source.getProperty<BlendedFlag>().getBlendedFlag();
 
  // set the source properties
  source.setIndexedProperty<AutoPhotometry>(m_instance, measurement.m_flux, flux_error, mag, mag_error, measurement.m_flags);
 
  // Draw the aperture
  auto aperture_check_img = CheckImages::getInstance().getMeasurementAutoApertureImage(m_instance);
  if (aperture_check_img) {
    auto src_id = source.getProperty<SourceID>().getId();
 
    drawAperture<int>(ell_aper, centroid_x, centroid_y, aperture_check_img, static_cast<unsigned>(src_id));
  }
}
 
}