📄 meanshift.mht
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Date: Tue, 26 Jun 2007 15:57:21 +0800
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META http-equiv=3DContent-Type content=3D"text/html; charset=3Dgb2312">
<META content=3D"MSHTML 6.00.2900.3086" name=3DGENERATOR></HEAD>
<BODY><PRE>% Adam Kukucka
% Zach Clay
% Marcelo Molina =20
% CSE 486 Project 3
function [ rowcenter colcenter M00 ] =3D meanshift(I, rmin, rmax, =
cmin,...
cmax, probmap)
%inputs
% rmin, rmax, cmin, cmax are the coordiantes of the window
% I is the image
%outputs
% colcenter rowcenter are the new center coordinates
% Moo is the zeroth mean
% **********************************************************************
% initialize
% **********************************************************************
M00 =3D 0; %zeroth mean
M10 =3D 0; %first moment for x
M01 =3D 0; %first moment for y
histdim =3D (0:1:255); % dimensions of histogram... 0 to 255, increment =
by 1
[rows cols] =3D size(I);
cols =3D cols/3; % **********************8
% **********************************************************************
% Main code
% **********************************************************************
% determine zeroth moment
for c =3D cmin:cmax
for r =3D rmin:rmax
M00 =3D M00 + probmap(r, c);
end
end
% determine first moment for x(col) and y(row)
for c =3D cmin:cmax
for r =3D rmin:rmax
M10 =3D M10 + c*probmap(r,c);
M01 =3D M01 + r*probmap(r,c);
end
end
% determine new centroid
% x is cols
colcenter =3D M10/M00;
% y is rows
rowcenter =3D M01/M00;
</PRE></BODY></HTML>
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