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function xyinput = dic_cpcorr(CORRSIZE, PRECISION, OPTIMIZE, hwid, base, xyinput_in, input)
% Copyright 1993-2004 The MathWorks, Inc.
% $Revision: 1.16.4.4 $ $Date: 2004/10/20 17:54:13 $
ncp = size(xyinput_in,1);
xyinput = xyinput_in; % initialize adjusted control points matrix
normxcorr_hw(hwid, 3, xyinput_in(:,1), xyinput_in(:,2));
normxcorr_hw(hwid, 12, input)
new_xy = normxcorr_hw(hwid, 4);
for icp = 1:ncp
corr_offset = new_xy(icp,:);
input_fractional_offset = xyinput(icp,:) - round(xyinput(icp,:)*PRECISION)/PRECISION;
xyinput(icp,:) = xyinput(icp,:) - input_fractional_offset - corr_offset + base(icp).base_fractional_offset;
end
%{
% Just for validation purposes
for icp=1:ncp
norm_cross_corr = double(normxcorr_hw(hwid, 11, icp, input));
subpixel = true;
[xpeak, ypeak, amplitude] = findpeak(norm_cross_corr,subpixel);
%THRESHOLD = 0.5;
%if (amplitude < THRESHOLD)
% low correlation, unable to adjust
% continue
%end
% offset found by cross correlation
corr_offset = [ (xpeak-3*CORRSIZE-1) (ypeak-3*CORRSIZE-1) ];
res(icp,1) = corr_offset(1);
res(icp,2) = corr_offset(2);
% eliminate any big changes in control points
ind = find(abs(corr_offset) > (CORRSIZE-1));
if ~isempty(ind)
% peak of norxcorr2 not well constrained, unable to adjust
continue
end
input_fractional_offset = xyinput(icp,:) - round(xyinput(icp,:)*PRECISION)/PRECISION;
% adjust control point
%xyinput(icp,:) = xyinput(icp,:) - input_fractional_offset - corr_offset + base(icp).base_fractional_offset;
end
%o1=res(500:510,:)'
%n1=new_xy(500:510,:)'
%o2=res(800:810,:)'
%n2=new_xy(800:810,:)'
mydiff = abs(new_xy - res);
sum(mydiff)
max(mydiff)
%}
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