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Message:: [QUOTE="Sean5150, post: 2299733, member: 75607"]I think for the system to work you would have to scan thousands of coins, not just a reference coin. Take the coins that have already been graded and amass a database. That way the computer not only knows the "perfect" coin, but it has a huge sampling of every grade in between. When thousands of grades are averaged out they become accurate. That's basically what they have to do for voice recognition. You can't use enter one audio file of a word for a computer, you have to enter thousands of files of thousands of people saying that word. That way the computer can have a database of comparison. To the computer, me saying the word "coin" and you saying the word "coin" are just a different bunch of binary digits. I think if this was employed as a way to give a base grade, with a maximum deviation stipulated, grading could get more accurate.[/QUOTE]