casa::ClarkCleanImageSkyModel Class Reference

Clark Image Sky Model: Image Sky Model implementing the Clark Clean algorithm. More...

#include <ClarkCleanImageSkyModel.h>

Inheritance diagram for casa::ClarkCleanImageSkyModel:

Public Member Functions
	ClarkCleanImageSkyModel ()
	constructor
	~ClarkCleanImageSkyModel ()
	destructor
virtual Bool	solve (SkyEquation &me)
	Solve for this SkyModel.
Static Public Member Functions
static Bool	clean (ImageInterface< Float > &image, ImageInterface< Float > &residual, ImageInterface< Float > &psf, ImageInterface< Float > &mask, Float &maxresidual, Int &iterused, Float gain, Int numIter, Float thresh, Float cycleFactor, Bool useMask=False, Bool doPolJoint=True)
	Do the image-based clean iterused and maxresidual are return values.
Static Private Member Functions
static Lattice< Float > *	makeMaskSubLat (const Int &nx, const Int &ny, Int &newNx, Int &newNy, RO_LatticeIterator< Float > &maskIter, Int &xbeg, Int &xend, Int &ybeg, Int &yend)
	make a mask sub-lattice
Private Attributes
ClarkCleanProgress *	itsProgress

Detailed Description

Clark Image Sky Model: Image Sky Model implementing the Clark Clean algorithm.

Intended use:

Public interface

Prerequisite

ImageSkyModel module
ClarkCleanLatModel module

Etymology

ClarkCleanImageSkyModel implements the Clark Clean algorithm. It is derived from SkyModel .

Synopsis

The Clark Clean is an FFT-based clean algorithm. Cleaning is split into major and minor cycles. In a minor cycle, the brightest pixels are cleaned using only the strongest sidelobes (and main lobe) of the PSF. In the major cycle, a fully correct subtraction of the PSF is done for all points accumulated in the minor cycle using an FFT-based convolution for speed.

The Clark Clean is implemented using the ClarkCleanLatModel class.

Masking is optionally performed using a mask image: only points where the mask is non-zero are cleaned. If no mask is specified all points in the inner quarter of the image are cleaned.

Example

See the example for SkyModel .

Motivation

Definition at line 86 of file ClarkCleanImageSkyModel.h.

Constructor & Destructor Documentation

casa::ClarkCleanImageSkyModel::ClarkCleanImageSkyModel ( )

constructor

casa::ClarkCleanImageSkyModel::~ClarkCleanImageSkyModel ( )

destructor

Member Function Documentation

static Bool casa::ClarkCleanImageSkyModel::clean	(	ImageInterface< Float > &	image,
		ImageInterface< Float > &	residual,
		ImageInterface< Float > &	psf,
		ImageInterface< Float > &	mask,
		Float &	maxresidual,
		Int &	iterused,
		Float	gain,
		Int	numIter,
		Float	thresh,
		Float	cycleFactor,
		Bool	useMask = `False`,
		Bool	doPolJoint = `True`
	)			`[static]`

Do the image-based clean iterused and maxresidual are return values.

static Lattice<Float>* casa::ClarkCleanImageSkyModel::makeMaskSubLat	(	const Int &	nx,
		const Int &	ny,
		Int &	newNx,
		Int &	newNy,
		RO_LatticeIterator< Float > &	maskIter,
		Int &	xbeg,
		Int &	xend,
		Int &	ybeg,
		Int &	yend
	)			`[static, private]`

make a mask sub-lattice

virtual Bool casa::ClarkCleanImageSkyModel::solve ( SkyEquation & me ) [virtual]

Solve for this SkyModel.

Reimplemented from casa::ImageSkyModel.

Member Data Documentation

ClarkCleanProgress* casa::ClarkCleanImageSkyModel::itsProgress [private]

Definition at line 112 of file ClarkCleanImageSkyModel.h.

The documentation for this class was generated from the following file:

code/synthesis/MeasurementComponents/ClarkCleanImageSkyModel.h