contrib/tbl/vepl/vepl_gaussian_convolution.h File Reference

gaussian smoothing More...

#include <vil/vil_image_resource.h>

Go to the source code of this file.

Functions
vil_image_resource_sptr	vepl_gaussian_convolution (vil_image_resource_sptr, double sigma=1, double cutoff=0.01)
	gaussian smoothing with given sigma (default 1).

---

Detailed Description

gaussian smoothing

Gaussian filtering is an operation that replaces a pixel with the average value of its surrounding pixels, in a certain neighbourhood, according to a Gaussian distribution (with given sigma= std deviation). (The window is cut when `cutoff' (default: 0.01) of the probability mass lies out of the window.)

Note that DataIn values must allow addition and multiplication with floats; and that the result be expressible as DataOut, possibly after rounding. Probably only float and double make sense as DataOut (?)

As this is a separable filter, it is implemented as a row-based 1-D filter followed by a column-based 1-D step.

Author:

Peter Vanroose, K.U.Leuven (ESAT/PSI)

Date:

7 October 2002

    Modifications
     Peter Vanroose - 20 aug 2003 - changed parameter and return types from vil_image_view_base_sptr to vil_image_resource_sptr
   

Definition in file vepl_gaussian_convolution.h.

---

Function Documentation

vil_image_resource_sptr vepl_gaussian_convolution	(	vil_image_resource_sptr	,
		double	sigma = 1,
		double	cutoff = 0.01
	)

gaussian smoothing with given sigma (default 1).

Definition at line 12 of file vepl_gaussian_convolution.cxx.