rob wrote:I'm wonder if it wouldn't just be easier to have FOUR cameras instead of two, and use stereoscopic imaging. Two cameras per page means that the three dimensional profile of each page can be captured, meaning that errors due to a non-flat page could be eliminated very easily. It still wouldn't solve lens distortion, which I think calibration images like this would be great for.
daniel_reetz wrote:... it's rather easy to get good parameters out of the free software tool called "Hugin". I would love to see a few of us calibrate our cameras using Hugin and create a lens database for the community to use.
daniel_reetz wrote:If this middle camera were IR sensitive, you could have an invisible pattern on the page. But that's into the Google digitizer patent territory.
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