Template Function lsst::afw::math::detail::convolveWithBruteForce

Function Documentation

template<typename OutImageT, typename InImageT>
void lsst::afw::math::detail::convolveWithBruteForce(OutImageT &convolvedImage, InImageT const &inImage, lsst::afw::math::Kernel const &kernel, lsst::afw::math::ConvolutionControl const &convolutionControl)

Convolve an Image or MaskedImage with a Kernel by computing the kernel image at every point. (If the kernel is not spatially varying then only compute it once).

convolvedImage must be the same size as inImage. convolvedImage has a border in which the output pixels are not set. This border has size:

  • kernel.getCtrX() along the left edge

  • kernel.getCtrY() along the bottom edge

  • kernel.getWidth() - 1 - kernel.getCtrX() along the right edge

  • kernel.getHeight() - 1 - kernel.getCtrY() along the top edge

Warning

Low-level convolution function that does not set edge pixels.

Parameters

  • [out] convolvedImage: convolved image

  • [in] inImage: image to convolve

  • [in] kernel: convolution kernel

  • [in] convolutionControl: convolution control parameters

Exceptions

  • lsst::pex::exceptions::InvalidParameterError: if convolvedImage dimensions != inImage dimensions

  • lsst::pex::exceptions::InvalidParameterError: if inImage smaller than kernel in width or height

  • lsst::pex::exceptions::InvalidParameterError: if kernel width or height < 1

  • std::bad_alloc: when allocation of CPU memory fails