function [predictor] = locatePredictor(pioRight,left,rr,cc,blocksize,winSize)

numCols = size(left,2);

if (cc-winSize/2<1)
  winLeft = 1;
else
  winLeft = cc - winSize/2;
end

if (cc+winSize/2-1>numCols-blocksize)
  winRight = numCols-blocksize+1;
else
  winRight = cc + winSize/2-1;
end

distance = zeros(1,winRight-winLeft+1);

for ccWin = winLeft : winRight
  pioLeft = getPioneer(left,rr,ccWin,blocksize);
  distance(ccWin-winLeft+1) = pioDistance(pioLeft,pioRight);
end

[minDist,winLoc] = min(distance);

predictor = winLeft+winLoc-1-cc;