casa6

//# Image2DConvolver.cc:  convolution of an image by given Array

//# Copyright (C) 1995,1996,1997,1998,1999,2000,2001,2002

//# Associated Universities, Inc. Washington DC, USA.

//#

//# This library is free software; you can redistribute it and/or modify it

//# under the terms of the GNU Library General Public License as published by

//# the Free Software Foundation; either version 2 of the License, or (at your

//# option) any later version.

//#

//# This library is distributed in the hope that it will be useful, but WITHOUT

//# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

//# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public

//# License for more details.

//#

//# You should have received a copy of the GNU Library General Public License

//# along with this library; if not, write to the Free Software Foundation,

//# Inc., 675 Massachusetts Ave, Cambridge, MA 02139, USA.

//#

//# Correspondence concerning AIPS++ should be addressed as follows:

//#        Internet email: aips2-request@nrao.edu.

//#        Postal address: AIPS++ Project Office

//#                        National Radio Astronomy Observatory

//#                        520 Edgemont Road

//#                        Charlottesville, VA 22903-2475 USA

//#

//   

#include <imageanalysis/ImageAnalysis/Image2DConvolver.h>

​

#include <casacore/casa/aips.h>

#include <casacore/casa/Arrays/IPosition.h>

#include <casacore/casa/Arrays/Array.h>

#include <casacore/casa/Arrays/ArrayMath.h>

#include <casacore/casa/Arrays/Vector.h>

#include <casacore/casa/Arrays/Matrix.h>

#include <casacore/casa/Exceptions/Error.h>

#include <components/ComponentModels/GaussianDeconvolver.h>

#include <components/ComponentModels/GaussianShape.h>

#include <components/ComponentModels/SkyComponentFactory.h>

#include <casacore/coordinates/Coordinates/CoordinateUtil.h>

#include <casacore/coordinates/Coordinates/CoordinateSystem.h>

#include <casacore/coordinates/Coordinates/DirectionCoordinate.h>

#include <casacore/lattices/LatticeMath/Fit2D.h>

#include <casacore/scimath/Functionals/Gaussian2D.h>

#include <imageanalysis/ImageAnalysis/ImageConvolver.h>

#include <imageanalysis/ImageAnalysis/ImageMetaData.h>

#include <casacore/images/Images/PagedImage.h>

#include <casacore/images/Images/TempImage.h>

#include <casacore/images/Images/ImageInterface.h>

#include <casacore/images/Images/ImageInfo.h>

#include <casacore/images/Images/ImageUtilities.h>

#include <casacore/images/Images/SubImage.h>

#include <casacore/casa/Logging/LogIO.h>

#include <casacore/scimath/Mathematics/Convolver.h>

#include <casacore/casa/Quanta/Quantum.h>

#include <casacore/casa/Quanta/MVAngle.h>

#include <casacore/casa/Quanta/Unit.h>

#include <casacore/casa/Quanta/QLogical.h>

#include <iostream>

​

#include <memory>

​

namespace casa {

​

template <class T> const casacore::String Image2DConvolver<T>::CLASS_NAME

    = "Image2DConvolver";

​

template <class T> Image2DConvolver<T>::Image2DConvolver(

    const SPCIIT image, const casacore::Record *const &region,

    const casacore::String& mask, const casacore::String& outname,

    const bool overwrite

) : ImageTask<T>(image, "", region, "", "", "", mask, outname, overwrite),

    _type(casacore::VectorKernel::GAUSSIAN),  _scale(0), _major(), _minor(),

    _pa(), _axes(image->coordinates().directionAxesNumbers()) {

    this->_construct(true);

}

​

// TODO use GaussianBeams rather than casacore::Vector<casacore::Quantity>s, this method

// can probably be eliminated.

template <class T>

std::vector<casacore::Quantity> Image2DConvolver<T>::_getConvolvingBeamForTargetResolution(

    const std::vector<casacore::Quantity>& targetBeamParms,

    const casacore::GaussianBeam& inputBeam

) const {

    casacore::GaussianBeam convolvingBeam;

    casacore::GaussianBeam targetBeam(

        targetBeamParms[0], targetBeamParms[1],

        targetBeamParms[2]

    );

    try {

        if(

            GaussianDeconvolver::deconvolve(