/
mpq.m
30 lines (25 loc) · 997 Bytes
/
mpq.m
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
%MPQ Image moments
%
% M = MPQ(IM, P, Q) is the PQ'th moment of the image IM. That is, the sum
% of I(x,y).x^P.y^Q.
%
% See also MPQ_POLY, NPQ, UPQ.
% Copyright (C) 1993-2011, by Peter I. Corke
%
% This file is part of The Machine Vision Toolbox for Matlab (MVTB).
%
% MVTB is free software: you can redistribute it and/or modify
% it under the terms of the GNU Lesser General Public License as published by
% the Free Software Foundation, either version 3 of the License, or
% (at your option) any later version.
%
% MVTB 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 Lesser General Public License for more details.
%
% You should have received a copy of the GNU Leser General Public License
% along with MVTB. If not, see <http://www.gnu.org/licenses/>.
function m = mpq(im, p, q)
[X,Y] = imeshgrid(im);
m = sum(sum( im.*X.^p.*Y.^q ) );