lsst::coadd::chisquared Namespace Reference

Namespaces
	coadd
	version

Functions
template<typename CoaddPixelT , typename WeightPixelT >
lsst::afw::geom::Box2I	addToCoadd (lsst::afw::image::MaskedImage< CoaddPixelT, lsst::afw::image::MaskPixel, lsst::afw::image::VariancePixel > &coadd, lsst::afw::image::Image< WeightPixelT > &weightMap, lsst::afw::image::MaskedImage< CoaddPixelT, lsst::afw::image::MaskPixel, lsst::afw::image::VariancePixel > const &maskedImage, lsst::afw::image::MaskPixel const badPixelMask, WeightPixelT weight)
	add good pixels from a masked image to a coadd and associated weight map using the chi squared algorithm More...

Function Documentation

template<typename CoaddPixelT , typename WeightPixelT >

lsst::afw::geom::Box2I lsst::coadd::chisquared::addToCoadd	(	lsst::afw::image::MaskedImage< CoaddPixelT, lsst::afw::image::MaskPixel, lsst::afw::image::VariancePixel > &	coadd,
		lsst::afw::image::Image< WeightPixelT > &	weightMap,
		lsst::afw::image::MaskedImage< CoaddPixelT, lsst::afw::image::MaskPixel, lsst::afw::image::VariancePixel > const &	maskedImage,
		lsst::afw::image::MaskPixel const	badPixelMask,
		WeightPixelT	weight
	)

add good pixels from a masked image to a coadd and associated weight map using the chi squared algorithm

For good pixels (image.mask & badPixelMask == 0), coadd and weightMap are altered as follows: coadd.image += image.image**2 / image.variance coadd.mask |= image.mask weightMap += weight For bad pixels, coadd and weightMap are not altered.

Note that coadd.variance is not altered.

Returns

overlapBBox: overlapping bounding box, relative to parent image (hence xy0 is taken into account)

Exceptions

pexExcept::InvalidParameterError

if coadd and weightMap dimensions or xy0 do not match.

Parameters

[in,out]	coadd	coadd to be modified
[in,out]	weightMap	weight map to be modified
	maskedImage	masked image to add to coadd
	badPixelMask	skip input pixel if input mask & badPixelMask !=0
	weight	relative weight of this image