Spyro P. wrote:
I\'m not too familiar with the details of scanner technology, if its just another bayer sensor that intrapolates colours or whatever
No, scanner sensors definitely don\'t use a Bayer matrix. The scanner sensor has the same width as the (short side of the) scanner platen, but it only captures one line of the image at a time, sequentially in R, G, B. So it\'s a CCD with three very wide rows of pixels/sensels. As the scanner head travels across the object being scanned, the three colour channels are being captured in the same place but in sequence and not simultaneously like a still camera.
I believe that modern LED scanners alternate the lighting between R/G/B and only have a single row CCD, to save costs.
There may be some errors in my description above, but this is the general idea.
Dec 23, 2010 at 10:33 AM
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