Infrared and Laser Engineering, Volume. 51, Issue 2, 20210887(2022)
Optically realize convolution operation of microlens array
As a simple linear translation invariant operation, convolution has been widely used in various fields of image processing, and the convolutional neural network derived from it is brilliant in the field of artificial intelligence. In order to deal with the problem of limited computing power of AI reasoning chip in the post-Moore era, optical neural network came into being. As one of the important research hotspots, optical convolutional neural network plays an important role in promoting the development of optical neural network. An optical convolution system was designed, based on the uniform light path formed by micro lens array and lens, the image carried in the light place was convoluted in two-dimensions. The system can complete simple image smoothing and sharpening in the optical path. When the spatial light modulator is used to realize the convolution kernel and input surface, the system can realize three convolution forms of various step sizes, and can also realize multi-channel three-dimensional convolution through multiple projection or flattening, thus laying a foundation for the realization of optical convolution neural network for complex image processing tasks.
Get Citation
Copy Citation Text
Yuhang Fei, Xiubao Sui, Qingbao Wang, Qian Chen, Guohua Gu. Optically realize convolution operation of microlens array[J]. Infrared and Laser Engineering, 2022, 51(2): 20210887
Category: Special issue-Computational optical imaging technology
Received: Dec. 20, 2021
Accepted: Feb. 6, 2022
Published Online: Mar. 21, 2022
The Author Email: