TizBin: A Low-Power Image Sensor with Event and Object Detection Using Efficient Processing-in-Pixel Schemes

Sepehr Tabrizchi, Shaahin Angizi, Arman Roohi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

7 Scopus citations

Abstract

In the Artificial Intelligence of Things (AIoT) era, always-on intelligent and self-powered visual perception systems have gained considerable attention and are widely used. Thus, this paper proposes TizBin, a low-power processing in-sensor scheme with event and object detection capabilities to eliminate power costs of data conversion and transmission and enable data-intensive neural network tasks. Once the moving object is detected, TizBin architecture switches to the high-power object detection mode to capture the image. TizBin offers several unique features, such as analog convolutions enabling low-precision ternary weight neural networks (TWNN) to mitigate the overhead of analog buffer and analog-to-digital converters. Moreover, TizBin exploits non-volatile magnetic RAMs to store NN's weights, remarkably reducing static power consumption. Our circuit-to-application co-simulation results for TWNNs demonstrate minor accuracy degradation on various image datasets, while TizBin achieves a frame rate of 1000 and efficiency of ∼1.83 TOp/s/W.

Original languageEnglish (US)
Title of host publicationProceedings - 2022 IEEE 40th International Conference on Computer Design, ICCD 2022
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages770-777
Number of pages8
ISBN (Electronic)9781665461863
DOIs
StatePublished - 2022
Event40th IEEE International Conference on Computer Design, ICCD 2022 - Olympic Valley, United States
Duration: Oct 23 2022Oct 26 2022

Publication series

NameProceedings - IEEE International Conference on Computer Design: VLSI in Computers and Processors
Volume2022-October
ISSN (Print)1063-6404

Conference

Conference40th IEEE International Conference on Computer Design, ICCD 2022
Country/TerritoryUnited States
CityOlympic Valley
Period10/23/2210/26/22

All Science Journal Classification (ASJC) codes

  • Hardware and Architecture
  • Electrical and Electronic Engineering

Keywords

  • n/a

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