This week's book giveaway is in the OCMJEA forum. We're giving away four copies of OCM Java EE 6 Enterprise Architect Exam Guide and have Paul Allen & Joseph Bambara on-line! See this thread for details.
This sounds very much like this topic you started earlier. Let's continue the discussion over there, where you had been asked to clarify the task you needed to do because "pixel pairing" is not a commonly understood term.