Leveraging an optical system for image encryption is a promising approach to information security since one can enjoy parallel,high-speed transmission,and low-power consumption encryption features.However,most existin...Leveraging an optical system for image encryption is a promising approach to information security since one can enjoy parallel,high-speed transmission,and low-power consumption encryption features.However,most existing optical encryption systems involve a critical issue that the dimension of the ciphertexts is the same as the plaintexts,which may result in a cracking process with identical plaintextciphertext forms.Inspired by recent advances in computational neuromorphic imaging(CNI)and speckle correlography,a neuromorphic encryption technique is proposed and demonstrated through proof-ofprinciple experiments.The original images can be optically encrypted into event-stream ciphertext with a high-level information conversion form.To the best of our knowledge,the proposed method is the first implementation for event-driven optical image encryption.Due to the high level of encryption data with the CNI paradigm and the simple optical setup with a complex inverse scattering process,our solution has great potential for practical security applications.This method gives impetus to the image encryption of the visual information and paves the way for the CNI-informed applications of speckle correlography.展开更多
Non-line-of-sight[NLOS]imaging enables the detection and reconstruction of hidden objects around corners,offering promising applications in autonomous driving,remote sensing,and medical diagnosis.However,existing stea...Non-line-of-sight[NLOS]imaging enables the detection and reconstruction of hidden objects around corners,offering promising applications in autonomous driving,remote sensing,and medical diagnosis.However,existing steady-state NLOS imaging methods face challenges in achieving high efficiency and precision due to the need for multiple diffuse reflections and incomplete Fourier amplitude sampling.This study proposes,to our knowledge,a novel steady-state NLOS imaging technique via polarization differential correlography[PDC-NLOS].By employing the polarization difference of the laser speckle,the method designs a single-shot polarized speckle illumination strategy.The fast and stable real-time encoding for hidden objects ensures stable imaging quality of the PDC-NLOS system.The proposed method demonstrates millimeter-level imaging resolution when imaging horizontally and vertically striped objects.展开更多
基金supported by the Research Grants Council of Hong Kong(GRF 17201620)ACCESS—AI Chip Center for Emerging Smart Systems,sponsored by InnoHK funding,Hong Kong,China,the National Natural Science Foundation of China(Grant Nos.62031018 and 61971227)Hong Kong Scholars Program(Grant No.XJ2022032).
文摘Leveraging an optical system for image encryption is a promising approach to information security since one can enjoy parallel,high-speed transmission,and low-power consumption encryption features.However,most existing optical encryption systems involve a critical issue that the dimension of the ciphertexts is the same as the plaintexts,which may result in a cracking process with identical plaintextciphertext forms.Inspired by recent advances in computational neuromorphic imaging(CNI)and speckle correlography,a neuromorphic encryption technique is proposed and demonstrated through proof-ofprinciple experiments.The original images can be optically encrypted into event-stream ciphertext with a high-level information conversion form.To the best of our knowledge,the proposed method is the first implementation for event-driven optical image encryption.Due to the high level of encryption data with the CNI paradigm and the simple optical setup with a complex inverse scattering process,our solution has great potential for practical security applications.This method gives impetus to the image encryption of the visual information and paves the way for the CNI-informed applications of speckle correlography.
基金supported by the National Natural Science Foundation of China(Nos.62427803,62031018,and U23A20283)the Jiangsu Provincial Key Research and Development Program(No.BE2022391)the Postgraduate Research&Practice Innovation Program of Jiangsu Province(No.KYCX24_0644)。
文摘Non-line-of-sight[NLOS]imaging enables the detection and reconstruction of hidden objects around corners,offering promising applications in autonomous driving,remote sensing,and medical diagnosis.However,existing steady-state NLOS imaging methods face challenges in achieving high efficiency and precision due to the need for multiple diffuse reflections and incomplete Fourier amplitude sampling.This study proposes,to our knowledge,a novel steady-state NLOS imaging technique via polarization differential correlography[PDC-NLOS].By employing the polarization difference of the laser speckle,the method designs a single-shot polarized speckle illumination strategy.The fast and stable real-time encoding for hidden objects ensures stable imaging quality of the PDC-NLOS system.The proposed method demonstrates millimeter-level imaging resolution when imaging horizontally and vertically striped objects.
