A Silicon Retina Providing Spatial and Temporal Filtering Functions of the Vertebrate Retina

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  • KAMEDA Seiji
    Department of Electronic Engineering, Graduate School of Engineering, Osaka University
  • YAGI Tetsuya
    Department of Electronic Engineering, Graduate School of Engineering, Osaka University

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Other Title
  • 生体網膜の時空間フィルタ機能を有するシリコン網膜の開発(高機能イメージセンサ)
  • 生体網膜の時空間フィルタ機能を有するシリコン網膜の開発
  • セイタイ モウマク ノ ジクウカン フィルタ キノウ オ ユウスル シリコン モウマク ノ カイハツ

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Abstract

A silicon retina was fabricated to emulate two fundamental types of response in the vertebrate retinal circuit, i.e. the sustained response and the transient response. The outputs of the silicon retina emulating the sustained response exhibit a Laplacian-Gaussian- like receptive field and therefore carry out a smoothing and a contrast enhancement on input images. The outputs emulating the transient response were obtained by subtracting subsequent images that were smoothed by a resistive network and therefore are sensitive to moving object. The chip was applied for a real time image processing in indoor illumination.

Journal

  • ITE Technical Report

    ITE Technical Report 26.42 (0), 27-30, 2002

    The Institute of Image Information and Television Engineers

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