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Scientific article
English

A 128 x 128 pixel 120-db dynamic-range vision-sensor chip for image contrast and orientation extraction

Published inIEEE journal of solid-state circuits, vol. 38, no. 12, p. 2325-2333
Publication date2003
Abstract

A vision sensor for low-cost, fast, and robust vision systems is described. The sensor includes an on-chip analog computation of contrast magnitude and direction of image features. A temporal ordering of this information according to the contrast magnitude is used to reduce the amount of data delivered. This sensor, realized in a 0.5- m two-poly three-metal technology, features a contrast sensitivity of 2%, a contrast direction precision of 3 , and an illumination dynamic range of 120 dB. Applications with uncontrolled lighting conditions are ideal for this sensor.

Keywords
  • Analog VLSI
  • CMOS vision sensor
  • Contrast computation
  • Early vision
  • Orientation computation
  • Temporal coding
Affiliation Not a UNIGE publication
Citation (ISO format)
RUEDI, P.-F. et al. A 128 x 128 pixel 120-db dynamic-range vision-sensor chip for image contrast and orientation extraction. In: IEEE journal of solid-state circuits, 2003, vol. 38, n° 12, p. 2325–2333. doi: 10.1109/JSSC.2003.819169
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Article (Published version)
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Identifiers
ISSN of the journal0018-9200
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Technical informations

Creation12/02/2011 4:54:00 PM
First validation12/02/2011 4:54:00 PM
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