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Visual Sensor with Resolution Enhancement by Mechanical Vibrations
Salt Lake City, Utah March 14-March 16
DOI Bookmark: http://doi.ieeecomputersociety.org/10.1109/ARVLSI.2001.9155652001 Conference on Advanced Research ...
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Oliver Landolt, California Institute of Technology
Ania Mitros, California Institute of Technology
Christof Koch, California Institute of Technology
The resolution limit of visual sensors due to finite pixel spacing can be overcome by applying continuous low-amplitude vibrations to the image-or taking advantage of existing vibrations in the environment, for instance in a mobile robotics application. Thereby, spatial intensity gradients turn into temporal intensity fluctuations which can be detected and processed by every pixel independently from the others. This approach enhances resolution and virtually eliminates fixed-pattern noise. An integrated circuit is described which implements this visual sensing principle. It incorporates an array of 32 by 32 pixels with local temporal signal processing, and a novel non-arbitrated address-event communication scheme providing timing guarantees on external signals for easy interfacing with off-the-shelf digital components.
Citation:
Oliver Landolt, Ania Mitros, Christof Koch, "Visual Sensor with Resolution Enhancement by Mechanical Vibrations," arvlsi, pp.249, 2001 Conference on Advanced Research in VLSI (ARVLSI'01), 2001
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