Biological and Man-made Systems -- A-page-21

Biological and Man-made Systems
*Part of Biological Vision System*	*Corresponding Part of* *Man-made Vision System*
*Cornea:*	*Lens Optical window and focusing lens element for incoming light*
*Iris:*	*Iris that controls light level and background rejection*
*Retina:*	*Focal plane array like CCD detector in a TV camera to absorb and process radiation*
*Rods and Cones:*	*Photo detectors in focal plane array to convert photon into chemical and electrical signals*
*Plexiform ganglion cells:*	*Image processing on sensor to start to extract features of interest*

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CDA APU CRIS Presentation -- March 31, 2004