A 26.5 nJ/px 2.64 Mpx/s CMOS vision sensor for Gaussian pyramid extraction

This paper introduces a CMOS vision sensor to extract the Gaussian pyramid with an energy cost of 26.5 nJ/px at 2.64 Mpx/s, thus outperforming conventional solutions employing an imager and a separate digital processor. The chip, manufactured in a 0.18 μm CMOS technology, consists of an arrangement...

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Bibliographic Details
Main Authors: Suarez, M., Brea, V. M., Fernandez-Berni, J., Carmona-Galan, R., Cabello, D., Rodriguez-Vazquez, A.
Format: Conference Proceeding
Language:English
Subjects:
Capacitors
CMOS integrated circuits
Computer architecture
Feature extraction
Inverters
System-on-chip
Visualization
Online Access:Request full text
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Summary:This paper introduces a CMOS vision sensor to extract the Gaussian pyramid with an energy cost of 26.5 nJ/px at 2.64 Mpx/s, thus outperforming conventional solutions employing an imager and a separate digital processor. The chip, manufactured in a 0.18 μm CMOS technology, consists of an arrangement of 88 × 60 processing elements (PEs) which captures images of 176 × 120 resolution and performs concurrent parallel processing right at pixel level. The Gaussian pyramid is generated by using a switched-capacitor network. Every PE includes four photodiodes, four MiM capacitors, one 8-bit single-slope ADC and one CDS circuit, occupying 44 × 44 μm 2 . Suitability of the chip is assessed by using metrics pertaining to visual tracking.
ISSN:1930-8833
2643-1319
DOI:10.1109/ESSCIRC.2014.6942084