Prism-Based Color Separation for Professional Digital ...

Reprint --- PICS 2000, March 28, PortlandPrism-Based Color Separation for ProfessionalDigital PhotographyRichard F. LyonFoveon, Clara, CA USAA bstractIn the field of silver-halide photography, colorseparation was explored about a century ago, using filtermosaics, dichroic mirrors, three-shot filtration, and othertechniques, before the dominant technology of multi-layeredcolor film emerged. In the field of Digital photography, thesame techniques are being explored now in conjuction withsilicon sensor technology. The three-shot technique, and therelated tri-linear scanning technique, can deliver excellentimages, but are awkward to employ and unsuitable forsubjects that move.

with no air gaps, using a precision opto-mechanical alignment system with the camera electronics in an image-analysis feedback loop, and finally secured by an index-

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