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Scanning 3D Objects In A4 Size At 300 Dpi, Descreening

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12:07 PM - 03/27/2002 by Vincent Alzieu

CCD scanners are capable of scanning 3D objects, at least in principle. We wanted to check this out using a cell phone. The image shown above has been reduced in size to enable it to fit the page. The following extracts are taken from the actual scan size.

Descreening

The Descreen function is used to remove the moiré effect that occurs when scanning pictures and photos from printed matter. Here, we can see that the Canon and the Umax scanners perform better than the other two contestants. For the Epson and the HP scanners, it necessary to apply a slight blur effect by using image editing software such as Photoshop.

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