Compact lensless optoelectronic convolutional neural network for image classification

Zaikun Zhang; Zhengshang Da; Depeng Kong; Ruiduo Wang; Qiyuan Mu; Shijie Wang; Yi Geng; Zhengquan He

doi:10.1117/12.3000602

24 November 2023 Compact lensless optoelectronic convolutional neural network for image classification

Zaikun Zhang, Zhengshang Da, Depeng Kong, Ruiduo Wang, Qiyuan Mu, Shijie Wang, Yi Geng, Zhengquan He

Proceedings Volume 12935, Fourteenth International Conference on Information Optics and Photonics (CIOP 2023); 129350F (2023) https://doi.org/10.1117/12.3000602
Event: Fourteenth International Conference on Information Optics and Photonics (CIOP 2023), 2023, Xi’an, China

Abstract

Recently, free-space optical neural networks (ONNs) have gained extensive interest as emerging machine learning platforms for implementing artificial intelligence tasks, such as image classification. Despite various optical implementations of electronic neural networks (ENNs), the bulky volume of optical components remains challenging to deploy edge devices, such as Internet of Things peripherals, wearable devices, and camera. To address this problem, we propose a compact lensless optoelectronic convolutional neural network (LOE-CNN) architecture with a lensless optical analog processor utilizing a single optimized diffractive phase mask (DPM) to perform convolution operations without Fourier lens. Comparing the processor with a commercially available NVIDIA A100 Tensor Core GPU in terms of speed and power, indicates the optical computing platform enables to replace the electronic processor in latency reduction and energy savings. Furthermore, we compare the LOE-CNN with two all-electronic neural networks (i.e., fully connected neural network [FC-NN] and convolutional neural network [CNN]) over the Modified National Institute of Standards and Technology (MNIST) dataset and Fashion-MNIST dataset, respectively, and demonstrate that the LOE-CNN can be functionally comparable to existing electronic counterparts in classification performance. My study not only opens up new application prospects for free-space ONNs based on compact lensless single-chip convolution processor, but also facilitates the development of ONNs-based smart devices.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Zaikun Zhang, Zhengshang Da, Depeng Kong, Ruiduo Wang, Qiyuan Mu, Shijie Wang, Yi Geng, and Zhengquan He "Compact lensless optoelectronic convolutional neural network for image classification", Proc. SPIE 12935, Fourteenth International Conference on Information Optics and Photonics (CIOP 2023), 129350F (24 November 2023); https://doi.org/10.1117/12.3000602

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KEYWORDS

Convolution

Spatial light modulators

Artificial neural networks

Digital micromirror devices

Image classification

Cameras

Image processing

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