contrib/tbl/vepl/vepl_moment.h File Reference

computation of n-th order moment More...

#include <vil/vil_image_resource.h>

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Functions
vil_image_resource_sptr	vepl_moment (vil_image_resource_sptr, int order, int width=3, int height=3)
	computation of n-th order moment of given order, width and height.

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Detailed Description

computation of n-th order moment

The n-th order moment operation replaces a pixel with the expected value of x^n of its surrounding pixels, in a certain neighbourhood. Here the neighbourhood is an arbitrary rectangular mask, the height and width of which are passed to the constructor.

A fast computation method is used which needs only seven + or - operations per pixel (except for initialization of first row and column) because it uses computed values of previous pixels.

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_moment.h.

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Function Documentation

vil_image_resource_sptr vepl_moment	(	vil_image_resource_sptr	,
		int	order,
		int	width = 3,
		int	height = 3
	)

computation of n-th order moment of given order, width and height.

Definition at line 11 of file vepl_moment.cxx.