Camera with analog adaptive photoreceptors for a tactile vision aid

Markus Loose; Karlheinz Meier; Johannes Schemmel

doi:10.1117/12.256310

29 October 1996 Camera with analog adaptive photoreceptors for a tactile vision aid

Markus Loose, Karlheinz Meier, Johannes Schemmel

Proceedings Volume 2904, Intelligent Robots and Computer Vision XV: Algorithms, Techniques,Active Vision, and Materials Handling; (1996) https://doi.org/10.1117/12.256310
Event: Photonics East '96, 1996, Boston, MA, United States

Abstract

A camera system to be used in a tactile vision aid for blind persons has been built and tested. The camera is based on individual adaptive photoreceptors modelled after the biological example and realized in standard CMOS technology. The system exhibits a large dynamic range of approximately 7 orders of magnitude in incident light intensity and a pronounced capability to detect moving objects. It is planned to connect such a camera to a set of mechanical actuators which will transmit processed information about the image to the skin of a person. This paper describes simulations and measurements carried out with single adaptive pixels as well as results obtained with two complete prototype camera systems.

Citation Download Citation

Markus Loose, Karlheinz Meier, and Johannes Schemmel "Camera with analog adaptive photoreceptors for a tactile vision aid", Proc. SPIE 2904, Intelligent Robots and Computer Vision XV: Algorithms, Techniques,Active Vision, and Materials Handling, (29 October 1996); https://doi.org/10.1117/12.256310

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