I'm not an image expert, but if it's just black/white, couldn't you just convert it to a bitmap and count the black pixels (or get a ratio of black to total pixels)?
Cameron
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To learn something about LabVIEW at no extra cost, work the online LabVIEW tutorial(s):
LabVIEW Unit 1 - Getting Started</ a>
Learn to Use LabVIEW with MyDAQ</ a>
