Lightator: An Optical Near-Sensor Accelerator with Compressive Acquisition Enabling Versatile Image Processing

Document Type

Conference Proceeding

Publication Date

11-7-2024

Abstract

This paper proposes a high-performance and energy-efficient optical near-sensor accelerator for vision applications, called Lightator. Harnessing the promising efficiency offered by photonic devices, Lightator features innovative compressive acquisition of input frames and fine-grained convolution operations for low-power and versatile image processing at the edge for the first time. This will substantially diminish the energy consumption and latency of conversion, transmission, and processing within the established cloud-centric architecture as well as recently designed edge accelerators. Our device-to-architecture simulation results show that with favorable accuracy, Lightator achieves 84.4 Kilo FPS/W and reduces power consumption by a factor of ∼24× and 73× on average compared with existing photonic accelerators and GPU baseline.

Identifier

85201206402 (Scopus)

ISBN

[9798400706011]

Publication Title

Proceedings - Design Automation Conference

External Full Text Location

https://doi.org/10.1145/3649329.3656261

ISSN

0738100X

Grant

#FA9550-22-1-0253

Fund Ref

Semiconductor Research Corporation

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