CENTRAL_MOMENTS_CVIP

central_moments_cvip()- computes the central moment of order (p+q) of a binary object.

Contents

SYNTAX

mu = central_moments_cvip(labeledImage,[r,c],p,q)

Input Parameters include :

Output Parameter include :

DESCRIPTION

This function provides information about the central moments of the binary object. Central moments are simply the standard moments shifted to the center of the area of the object or the centroid of the object. Central moments help in determining the RST-invariant features of the binary object.

REFERENCE

1.Scott E Umbaugh DIGITAL IMAGE PROCESSING AND ANALYSIS: Applications with MATLAB and CVIPtools 3rd Edition.

EXAMPLE

% Read image

 input_img = imread('Shapes.bmp');

% Label image

  lab_image = label_cvip(input_img);

% row and column number of  a pixel

 r= 247;

 c=224; % (247,224) is a location on the ellipse with a hole.

% Exponent of the moment

 p=1;  % The central moment for p=1 and q=2 should turn out to be 0 because of the symmetry of the object

 q=2;

% Call function

 mu = central_moments_cvip(lab_image, [r,c],p,q);

% Display input image

 figure; imshow(input_img,[]);

 fprintf('Central Moment : %d', mu);
Central Moment : 0

CREDITS

Author: Mehrdad Alvandipour, March 2017
Copyright © 2017-2018 Scott E Umbaugh
For updates visit CVIP Toolbox Website