A ghost imaging method based on multi-frequency fusion

Ye, Hualong; Yi, Kechu; Wang, Jian; Zhang, Leihong; Sun, Hao; Zhang, Dawei

doi:10.1140/epjd/s10053-022-00348-z

Cited by 2 publications

(1 citation statement)

References 30 publications

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“…The correlation-based nature of this technique, along with additional post-processing methods, allows image restoration even when the object is in scattering non-stationary media. 16,17 To capture comprehensive information about an object, a large number of illuminating patterns are necessary, which are typically generated using a spatial light modulator (SLM), 18 or LED arrays. 19,20 The quality of ghost images gradually improves with the square root of the number of illumination patterns.…”

Section: Introductionmentioning

confidence: 99%

Ghost imaging with auxiliary multiplex channels: a review of the latest results

Petrov,

Ismagilov,

Oparin

et al. 2024

Speckle 2023: VIII International Conference on Speckle Metrology

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In this paper, we present a review of the latest results obtained in the scope of ghost imaging using auxiliary multiplex channels. The proposed methods make it possible to increase the speed of image acquisition, as well as eliminate distortions in the signal of a bucket detector. One of the most serious limitations of ghost imaging is the large number of measurements required. During the data acquisition, the optical environment where the observation object is located may change its parameters, which will negatively affect the quality of the reconstructed image. To solve these problems, it is possible to use fast spatial light modulators to set structured patterns and fast detectors. However, such equipment is not available in some spectral ranges and is not able to suppress distortions in the detected signal. In this regard, our team has proposed a number of techniques to solve the problems of a large number of measurements and non-stationarity of the optical medium in ghost imaging systems. First of all, an auxiliary polarization channel method was presented in a ghost imaging system to eliminate distortion in the signal of a bucket detector. Secondly, wavelength multiplexing methods have been proposed in the visible and terahertz wavelength ranges. These methods will make ghost imaging systems more applicable to the tasks of remote sensing and mapping of areas in various spectral ranges.

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Section: Introductionmentioning

confidence: 99%

Ghost imaging with auxiliary multiplex channels: a review of the latest results

Petrov,

Ismagilov,

Oparin

et al. 2024

Speckle 2023: VIII International Conference on Speckle Metrology

View full text Add to dashboard Cite

show abstract

Research on double camouflage encryption mechanism of QR code based on UAV landing scenario

Ye,

2023

Sci Rep

Self Cite

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Usually, the landing area of the drone is presented with QR code images, so it is crucial to ensure the information security of the landing area and prevent it from being occupied by other users. This paper proposes a double camouflage encryption method of QR code based on UAV landing scenario. For the QR code image required for UAV landing, the private key and carrier image are used to complete double camouflage encryption, and then the public key is modulated according to the principle of ghost imaging to obtain the ciphertext. After receiving the ciphertext, the receiver first decrypts the camouflage image according to the public key, and then decrypts the QR code image using the private key. The UAV receives ciphertext information through the detector, for non-users, the correct QR code image cannot be decrypted through the wrong key. Even if the eavesdropper obtains the public key information, they can only decrypt the camouflage image and cannot land. For our users, the public key and the double private key can decrypt the correct QR code image for landing. This encryption method can effectively decrypt the image at non-full sampling rate, while also resisting the external noise attack, and has high security.

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A ghost imaging method based on multi-frequency fusion

Cited by 2 publications

References 30 publications

Ghost imaging with auxiliary multiplex channels: a review of the latest results

Ghost imaging with auxiliary multiplex channels: a review of the latest results

Research on double camouflage encryption mechanism of QR code based on UAV landing scenario

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