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Title

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

Authors
Ruedi, P.-F.
Heim, P.
Kaess, F.
Grenet, E.
Heitger, F.
Gyger, S.
Nussbaum, P.
Published in IEEE Journal of Solid-State Circuits. 2003, vol. 38, no. 12, p. 2325-2333
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 VLSICMOS vision sensorContrast computationEarly visionOrientation computationTemporal coding
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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. https://archive-ouverte.unige.ch/unige:17768

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Deposited on : 2011-12-09

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