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/ImageConvolverTask.h>

​

namespace casa {

​

template <class T> const casacore::String ImageConvolverTask<T>::CLASS_NAME = "ImageConvolverTask";

​

template <class T> ImageConvolverTask<T>::ImageConvolverTask(

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

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

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

    _kernel(), _scale(0) {

    this->_construct(true);

}

​

​

template <class T> SPIIT ImageConvolverTask<T>::convolve() {

    auto autoScale = _scale <= 0;

    auto subImage = SubImageFactory<T>::createSubImageRO(

        *this->_getImage(), *this->_getRegion(), this->_getMask(),

        this->_getLog().get(), casacore::AxesSpecifier(), this->_getStretch()

    );

    casacore::TempImage<T> x(subImage->shape(), subImage->coordinates());

    // Make the convolver

    casacore::Bool copyMisc = true;

    auto scaleType = autoScale

        ? ImageConvolver<T>::AUTOSCALE : ImageConvolver<T>::SCALE;

    ImageConvolver<T> aic;

    aic.convolve(

        *this->_getLog(), x, *subImage, _kernel, scaleType,

        _scale, copyMisc

    );

    if (_kernel.ndim() < subImage->ndim()) {

        String msg = "NOTE: kernel with fewer dimensions than the input image applied. Degenerate axes added to the kernel";

        this->addHistory(LogOrigin("ImageConvolverTask", __func__), msg);

    }

    return this->_prepareOutputImage(x);

}