Integrated ultra-thin coded aperture lensless camera

Jiachen Wu; Fangyu Liu; Liangcai Cao

doi:10.1117/12.3029310

1 October 2024 Integrated ultra-thin coded aperture lensless camera

Jiachen Wu, Fangyu Liu, Liangcai Cao

Proceedings Volume PC13140, Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications XVIII; PC1314005 (2024) https://doi.org/10.1117/12.3029310
Event: Optical Engineering + Applications, 2024, San Diego, California, United States

Abstract

The coded-aperture imaging technique needs only a thin coded mask to encode image, which enable to build an ultra-thin imaging system. However, the limited dynamic range of the image sensor and the diffraction effect degrades the reconstructed images quality. Here, we proposed an integrated ultra-thin coded aperture lensless camera. We take Fresnel zone plates as coded mask, then the incident light could be encoded into a hologram-like pattern, and the image can be holographic reconstruction. A deep neural network is also trained for rapid and high-quality reconstruction. To improve the dynamic range, differential-enhancement method is used by capture two complementary encoding images. The proposed integrated ultra-thin camera is expected to be applied in unconscious payment, identification and authentication, autonomous cars, etc.

Conference Presentation

Citation Download Citation

Jiachen Wu, Fangyu Liu, and Liangcai Cao "Integrated ultra-thin coded aperture lensless camera", Proc. SPIE PC13140, Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications XVIII, PC1314005 (1 October 2024); https://doi.org/10.1117/12.3029310

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