A 33 \mu W 64 \,\times\, 64 Pixel Vision Sensor Embedding Robust Dynamic Background Subtraction for Event Detection and Scene Interpretation
A 64 × 64-pixel ultra-low power vision sensor is presented, performing pixel-level dynamic background subtraction as the low-level processing layer of an algorithm for scene interpretation. The pixel embeds two digitally-programmable Switched-Capacitors Low-Pass Filters (SC-LPF) and two clocked comp...
Saved in:
Published in | IEEE journal of solid-state circuits Vol. 48; no. 3; pp. 850 - 863 |
---|---|
Main Authors | , , , , |
Format | Journal Article |
Language | English |
Published |
IEEE
01.03.2013
|
Subjects | |
Online Access | Get full text |
Cover
Loading…
Summary: | A 64 × 64-pixel ultra-low power vision sensor is presented, performing pixel-level dynamic background subtraction as the low-level processing layer of an algorithm for scene interpretation. The pixel embeds two digitally-programmable Switched-Capacitors Low-Pass Filters (SC-LPF) and two clocked comparators, aimed at detecting any anomalous behavior of the current photo-generated signal with respect to its past history. The 45 T, 26 μm square pixel has a fill-factor of 12%. The vision sensor has been fabricated in a 0.35 μm 2P3M CMOS process, powered with 3.3 V, and consumes 33 μ W at 13 fps, which corresponds to 620 pW/frame.pixel. |
---|---|
ISSN: | 0018-9200 1558-173X |
DOI: | 10.1109/JSSC.2012.2235031 |