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Protein-based optical filters for image processing Yoshiko Okada-Shudo, Tokimasa Tanabe, Takayuki Mukai, Takuma Motoi, Katsuyuki Kasai Abstract: Photosensitive bacteriorhodopsin is used in a new artificial system with visual receptive fields that can respond selectively to contrasts in luminance, direction of movement, line orientation, and spatial frequency. 10.1117/2.1201509.006132 |