ObitConvUtil.h File Reference

ObitConvUtil utility module definition for the ObitImage class. More...

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

Go to the source code of this file.

Functions
void	ObitConvUtilConv (ObitImage *inImage, ObitFArray *convFn, gboolean doDivide, gfloat rescale, ObitImage *outImage, ObitErr *err)
	(de)Convolve an Image with an FArray and write outImage This routine convolves all selected planes in inImage with convFn if doDivide is FALSE, else it does a linear deconvolution Operations are performed using FFTs
ObitFArray *	ObitConvUtilGaus (ObitImage *inImage, gfloat Beam[3])
	Create an ObitFArray containing a unit area Gaussian in the center.
void	ObitConvUtilDeconv (gfloat fmaj, gfloat fmin, gfloat fpa, gfloat cmaj, gfloat cmin, gfloat cpa, gfloat *rmaj, gfloat *rmin, gfloat *rpa)
	Deconvolves a Gaussian "beam" from a Gaussian component.

---

Detailed Description

ObitConvUtil utility module definition for the ObitImage class.

Routines for image convolution

---

Function Documentation

void ObitConvUtilConv (  ObitImage *  inImage, ObitFArray *  convFn, gboolean  doDivide, gfloat  rescale, ObitImage *  outImage, ObitErr *  err )

(de)Convolve an Image with an FArray and write outImage This routine convolves all selected planes in inImage with convFn if doDivide is FALSE, else it does a linear deconvolution Operations are performed using FFTs Parameters: inImage  Input ObitImage convFn  Convolving Function doDovide  If true divide FT of convFn into FT of inImage, else multiply rescale  multiplication factor to scale output to correct units outImage  Output ObitImage must be a clone of inImage Actual convolution size must be set externally err  ObitErr for reporting errors.

void ObitConvUtilDeconv (  gfloat  fmaj, gfloat  fmin, gfloat  fpa, gfloat  cmaj, gfloat  cmin, gfloat  cpa, gfloat *  rmaj, gfloat *  rmin, gfloat *  rpa )

Deconvolves a Gaussian "beam" from a Gaussian component. Routine translated from the AIPSish APL/SUB/DECONV.FOR/DECONV Parameters: fmaj  Convolved major axis fmin  Convolved minor axis fpa  Convolved position angle of major axis cmaj  Beam major axis cmin  Beam minor axis cpa  Beam position angle of major axis rmaj  [out] Actual major axis; = 0 => unable to fit rmin  [out] Actual minor axis; = 0 => unable to fit rpa  [out] Actual position angle of major axis

ObitFArray* ObitConvUtilGaus (  ObitImage *  inImage, gfloat  Beam[3] )

Create an ObitFArray containing a unit area Gaussian in the center. Parameters: inImage  ObitImage giving the geometry of the output array Beam  Gaussian major, minor axis, position angle all in deg. If there is no pixel spacing information in the inImage descriptor then the size is assumed in pixels. Returns: new ObitFArray, should be Unreffed when done

---