A 160×120 Light-Adaptive CMOS Vision Chip for Edge Detection Based on a Retinal Structure Using a Saturating Resistive Network

ETRI Journal

关键词: light adaptation;    saturating resistive network;    retinal structure;    edge detection;    Vision chip;   

Others  :  1185599
DOI  :  10.4218/etrij.07.0106.0214

【 摘 要 】

We designed and fabricated a vision chip for edge detection with a 160×120 pixel array by using 0.35 ㎛ standard complementary metal-oxide-semiconductor (CMOS) technology. The designed vision chip is based on a retinal structure with a resistive network to improve the speed of operation. To improve the quality of final edge images, we applied a saturating resistive circuit to the resistive network. The light-adaptation mechanism of the edge detection circuit was quantitatively analyzed using a simple model of the saturating resistive element. To verify improvement, we compared the simulation results of the proposed circuit to the results of previous circuits.

   

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