Mr. Ruben Laviana-Gonzalez Profile

Ruben Laviana-Gonzalez

at Ctr Nacional de Microelectrónica

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Proceedings Article | 29 June 2005 Paper

A bioinspired vision chip architecture for collision detection in automotive applications

R. Laviana, L. Carranza, S. Vargas, G. Linan, E. Roca

Proceedings Volume 5839, (2005) https://doi.org/10.1117/12.608063

KEYWORDS: Analog electronics, Sensors, Capacitors, Neurons, Transistors, High dynamic range imaging, Diodes, Photodiodes, Image acquisition, Systems modeling

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This paper describes the architecture and retino-topic unit of a bio-inspired vision chip intended for automotive applications. The chip contains an array of 100X150 sensors which are able to capture high dynamic range (HDR) images, with a programmable compressive characteristic. The chip also incorporates a mechanism for adaptation of the global exposition time to the average illumination conditions. Average values are evaluated over image areas which are programmable by the user. In addition to the HDR pixel, every retino-topic unit in the array incorporates digital memory for three 6-bit pixel values (18-bits), as required for the implementation of a bionspired computing model for collisions detection which has been developed in the framework of a multidisciplinary European research project. All processing steps are executed off-chip, though we are currently working in the design of tiny digital processors (one per column) which will allow for running the whole model on-chip in a future version of this prototype. The chip has been designed in a 0.35μm 2P-4M technology and maintains its correct operation in extreme temperature conditions (from -40°C to 110°C).

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