function [ rowcenter colcenter M00 ] = 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 = 0; %zeroth mean
M10 = 0; %first moment for x
M01 = 0; %first moment for y
histdim = (0:1:255); % dimensions of histogram... 0 to 255, increment by 1
[rows cols] = size(I);
cols = cols/3; % **********************8
% **********************************************************************
% Main code
% **********************************************************************
% determine zeroth moment
for c = cmin:cmax
for r = rmin:rmax
M00 = M00 + probmap(r, c);
end
end
% determine first moment for x(col) and y(row)
for c = cmin:cmax
for r = rmin:rmax
M10 = M10 + c*probmap(r,c);
M01 = M01 + r*probmap(r,c);
end
end
% determine new centroid
% x is cols
colcenter = M10/M00;
% y is rows
rowcenter = M01/M00;
