ObitFeatherUtil.h File Reference

Image feathering utility routine definition. More...

#include "Obit.h"
#include "ObitErr.h"
#include "ObitImage.h"
#include "ObitFFT.h"

Go to the source code of this file.

Functions
ObitFFT *	ObitFeatherUtilCreateFFT (ObitImage *in, ObitFFTdir dir)
	Public: Create an FFT object suitable for FFTing an image.
ObitImage *	ObitFeatherUtilCreatePadImage (ObitFFT *inFFT, ObitImage *inImage, ObitErr *err)
	Public: Return scratch Image the size needed for a padding.
ObitCArray *	ObitFeatherUtilCreateFFTArray (ObitFFT *inFFT)
	Public: Create a half plane CArray suitable for the output of FFTing an image.
void	ObitFeatherUtilPad (ObitFFT *inFFT, ObitImage *inImage, ObitImage *outImage, ObitErr *err)
	Public: Zero Pads an image as needed for an FFT.
void	ObitFeatherUtilBigger (glong *naxis, ObitImage *inImage, ObitImage *outImage, ObitErr *err)
	Public: Increases the size of an image and zero pads.
void	ObitFeatherUtilPadArray (ObitFFT *inFFT, ObitFArray *inArray, ObitFArray *outArray)
	Public:Zero Pads an array as needed for an FFT PadArray.
ObitFArray *	ObitFeatherUtilExtract (ObitFFT *inFFT, ObitFArray *inArray, ObitErr *err)
	Public: Extract a Real array from one padded for FFTs.
ObitFArray *	ObitFeatherUtilMakeBeamMask (ObitImage *inImage, ObitFFT *inFFT, ObitErr *err)
	Public:Make uv plane weighting array.
void	ObitFeatherUtilCreateModel (ObitImage *image, ObitFArray *outArray)
	Public: Fill an FArray with a model the size and shape of the resolution in an image.
void	ObitFeatherUtilAccumImage (ObitFFT *FFTfor, ObitImage *inImage, ObitFArray *wtArray, ObitCArray *accArray, ObitCArray *workArray, ObitErr *err)
	Public: Accumulate the weighted FT of an FArray.
void	ObitFeatherUtilInterpol (ObitImage *inImage, ObitImage *tmplImage, ObitImage *outImage, ObitErr *err)
	Public: HGEOM-like operation (Before EWG got to it).
void	ObitFeatherUtilSubImage (ObitImage *inImage, ObitFArray *inArray, ObitImage *outImage, ObitErr *err)
	Public: Extract the subimage in inAray corresponding to outImage.

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Detailed Description

Image feathering utility routine definition.

Routines for feathering together images at different resolutions.

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Function Documentation

void ObitFeatherUtilAccumImage (  ObitFFT *  FFTfor, ObitImage *  inImage, ObitFArray *  wtArray, ObitCArray *  accArray, ObitCArray *  workArray, ObitErr *  err )

Public: Accumulate the weighted FT of an FArray. Parameters: FFTfor  FFT object to FT input array (on inImage) inImage  Image to be accumulated must be a size compatable with FFTfor, returned with contents swapped for FFTs wtArray  FArray containing accumulation weights, must be a size compatable with FT of input array. accArray  CArray in which the results are to be accumulated. must be a size compatable with FT of input array. workArray  CArray for temporary storage of FT of input array. err  ObitErr error stack.

void ObitFeatherUtilBigger (  glong *  naxis, ObitImage *  inImage, ObitImage *  outImage, ObitErr *  err )

Public: Increases the size of an image and zero pads. Parameters: naxis  dimension array of desired output inImage  Obit Image to be padded. outImage  Obit Image for output, Must previously exist err  ObitErr error stack.

ObitFFT* ObitFeatherUtilCreateFFT (  ObitImage *  in, ObitFFTdir  dir )

Public: Create an FFT object suitable for FFTing an image. Parameters: in  Image to be FFTed dir  FFT direction (OBIT_FFT_Forward, OBIT_FFT_Reverse) Returns: ObitFFT, must be Unrefed when done

ObitCArray* ObitFeatherUtilCreateFFTArray (  ObitFFT *  inFFT  )

Public: Create a half plane CArray suitable for the output of FFTing an image. Parameters: inFFT  FFT to be applied Returns: CArray, must be Unrefed when done

void ObitFeatherUtilCreateModel (  ObitImage *  image, ObitFArray *  outArray )

Public: Fill an FArray with a model the size and shape of the resolution in an image. A model image is inserted in outArray derived from the restoring beam in image. The size and geometry of outArray must be those described by image Parameters: image  Image with info, image member MUST be present outArray  Python FArray to receive model, must previously exist.

ObitImage* ObitFeatherUtilCreatePadImage (  ObitFFT *  inFFT, ObitImage *  inImage, ObitErr *  err )

Public: Return scratch Image the size needed for a padding. Parameters: inFFT  FFT defining proper padded image size (created by ObitFeatherUtilCreateFFT) inImage  Obit Image to be padded. err  ObitErr error stack. Returns: Scratch Image, must be Unrefed when done

ObitFArray* ObitFeatherUtilExtract (  ObitFFT *  inFFT, ObitFArray *  inArray, ObitErr *  err )

Public: Extract a Real array from one padded for FFTs. Parameters: inFFT  Gives size of FFT needed inArray  FArray with FFT results. err  Obit error stack object.

void ObitFeatherUtilInterpol (  ObitImage *  inImage, ObitImage *  tmplImage, ObitImage *  outImage, ObitErr *  err )

Public: HGEOM-like operation (Before EWG got to it). Parameters: inImage  Image to be interpolated tmplImage  Image whose geometry is to be used. outImage  values from inImage on grid of tmplImage undefined values set to zero to allow FFT. err  ObitErr error stack.

ObitFArray* ObitFeatherUtilMakeBeamMask (  ObitImage *  inImage, ObitFFT *  inFFT, ObitErr *  err )

Public:Make uv plane weighting array. Parameters: inImage  Obit Image to be padded. inFFT  Obit forward FFT object err  ObitErr error stack. Returns: uv mask array

void ObitFeatherUtilPad (  ObitFFT *  inFFT, ObitImage *  inImage, ObitImage *  outImage, ObitErr *  err )

Public: Zero Pads an image as needed for an FFT. Parameters: inFFT  FFT to be applied inImage  Obit Image to be padded. outImage  Obit Image for output err  ObitErr error stack.

void ObitFeatherUtilPadArray (  ObitFFT *  inFFT, ObitFArray *  inArray, ObitFArray *  outArray )

Public:Zero Pads an array as needed for an FFT PadArray. Parameters: inFFT  Gives size of FFT needed inArray  FArray to be padded. outArray  FArray containing inArray but zero filled.

void ObitFeatherUtilSubImage (  ObitImage *  inImage, ObitFArray *  inArray, ObitImage *  outImage, ObitErr *  err )

Public: Extract the subimage in inAray corresponding to outImage. one the padded version of the other) outImage is updated in permanent storage (disk) Parameters: inImage  Image describing inArray inArray  array from which values are to be extracted outImage  accepts values from inImage, must exist and be fully defined err  ObitErr error stack.

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