WlzGauss.c File Reference

Gaussian filter fo 2D objects with values. Uses WlzSepTrans() and for colour images can only do smoothing correctly (i.e. derivative zero). More...

Macros
#define	AFACTOR   100

Functions
WlzObject *	WlzGauss2 (WlzObject *obj, double wx, double wy, int x_deriv, int y_deriv, WlzErrorNum *wlzErr)
	Gaussian filter of grey-level 2D woolz object. x- and y-coordinate width parameters and derivative degree can be independently specified. For derivative zero, i.e. Gaussian smoothing, the filter is normalised. Derivatives are derivative of the normalised filter. RGB data will only return values for smoothing, higher derivatives are not implemented. The width parameter is the full-width half-height of the Gaussian distribution. Note RGB pixel types are converted to a compound object with each channel returned with WLZ_GREY_SHORT pixel type. More...
WlzErrorNum	Wlz1DConv (WlzSepTransWSpace *stwspc, void *params)
	Perform a 1D convolution on a 1D array of data. Typically used to pass to WlzSepTrans(). The params variable is a 1D convolution mask. More...

Detailed Description

Gaussian filter fo 2D objects with values. Uses WlzSepTrans() and for colour images can only do smoothing correctly (i.e. derivative zero).

Author

Richard Baldock

Date

May 2003

Version

Id

82983d719704e95c1b277ee3d7bbc37a9fb8b475

Address: MRC Human Genetics Unit, MRC Institute of Genetics and Molecular Medicine, University of Edinburgh, Western General Hospital, Edinburgh, EH4 2XU, UK.

Copyright (C), [2012], The University Court of the University of Edinburgh, Old College, Edinburgh, UK.

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.

Macro Definition Documentation

#define AFACTOR   100

Referenced by WlzGauss2().