Lightator: An Optical Near-Sensor Accelerator with Compressive Acquisition Enabling Versatile Image Processing
arxiv(2024)
摘要
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
24x and 73x on average compared with existing photonic accelerators and GPU
baseline.
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