Article
Physics, Multidisciplinary
Le Wang, Hui Guo, Shengmei Zhao
Summary: We propose a new full color ghost imaging scheme that combines time and code division multiplexing technologies. The scheme achieves high quality imaging with limited time slots and codes, while reducing the number of bucket detectors.
Article
Quantum Science & Technology
Jonte R. Hance, John Rarity
Summary: The protocol presents a ghost imaging method that maintains counterfactuality, ensuring no interaction between light and the imaged object. In the infinite limit, this method allows imaging of light-sensitive objects without damaging them, while in general, it offers significant improvement in visibility and signal-to-noise ratio compared to previous protocols.
NPJ QUANTUM INFORMATION
(2021)
Article
Optics
Huan Cui, Jie Cao, Qun Hao, Dong Zhou, Mingyuan Tang, Kaiyu Zhang, Yingqiang Zhang
Summary: The research proposes an omnidirectional ghost imaging system that can achieve a 360 degrees omnidirectional field of view with the addition of a curved mirror, obtaining undistorted and unwrapping-free panoramic images with uniform resolution.
Article
Optics
Baolei Liu, Fan Wang, Chaohao Chen, Fei Dong, David Mcgloin
Summary: Ghost imaging captures 2D images using a point detector instead of an array sensor, offering the potential to image objects in turbid media and bypass offline processing. The self-evolving ghost imaging strategy evaluates and generates illumination patterns in real time, updating the object's image at a rapid rate. SEGI demonstrates robust imaging capabilities for static and moving objects, surpassing traditional computational ghost imaging in terms of imaging power and adaptability.
Article
Optics
Zhiyuan Ye, Peixia Zheng, Wanting Hou, Dian Sheng, Weiqi Jin, Hong-Chao Liu, Jun Xiong
Summary: This paper introduces a new technology called computational convolutional ghost imaging (CCGI), which uses a single-pixel photodetector and structured illumination to perform convolution operations, enabling direct observation of the features of interest in a target without imaging. The CCGI scheme can adaptively work under sub-Nyquist sampling conditions and is suitable for real-time non-imaging edge detection.
OPTICS AND LASERS IN ENGINEERING
(2022)
Article
Optics
Zhe Yang, Kexin Huang, Machi Zhang, Dong Ruan, Junlin Li
Summary: This study proposes a new experimentally verified ghost imaging mechanism called derivative GI. By using the derivatives of the intensities of the test light and the reference light, multiple independent signals can be obtained in one measurement. The combination of derivative GI and the standard GI algorithm reduces the number of measurements and the time required for data acquisition and imaging, making it suitable for on-chip implementation.
CHINESE OPTICS LETTERS
(2022)
Article
Optics
Huan Cui, Jie Cao, Qun Hao, Dong Zhou, Haoyu Zhang, Yingqiang Zhang
Summary: Panoramic ghost imaging (PGI) is a novel method that uses a curved mirror to expand the field of view (FOV) of ghost imaging (GI) to 360 degrees, allowing GI to break through in applications with a wide FOV. However, achieving high-resolution PGI with high efficiency is a challenge due to the large amount of data. Therefore, a foveated panoramic ghost imaging (FPGI) method is proposed to achieve a wide FOV, high resolution, and high efficiency by reducing resolution redundancy and promoting the practical applications of GI with a wide FOV.
Article
Optics
Jinfen Liu, Le Wang, Shengmei Zhao
Summary: In this paper, a novel spread spectrum ghost imaging (SSGI) scheme is proposed to overcome the environmental interference that degrades image quality in traditional ghost imaging systems. By treating the system as a communication system and using a direct sequence code for modulation and correlation, SSGI demonstrates stronger noise resistance and better performance with longer code lengths.
Article
Optics
Teruaki Torii, Yuta Haruse, Shintaro Sugimoto, Yusuke Kasaba
Summary: The new method of time division ghost imaging improves image quality in noisy environments by dividing the total number of patterns in the correlation function calculation process into sub-units with fewer illuminated patterns. The validation of this method shows robustness to noise through simulations and experiments.
Article
Optics
Zhang Leihong, Wang Yang, Zhang Dawei
Summary: An algorithm for multiple-image encryption based on Radon transform and ghost imaging is proposed to address issues such as low reconstruction accuracy, easy cross-talk, and poor robust performance. By applying Radon transform to the encryption system of ghost imaging, the algorithm successfully reduces data transmission, improves reconstructed image precision, and enhances encryption system robustness.
OPTICS COMMUNICATIONS
(2022)
Article
Optics
Paul R. Torke, Robert Nuster, Guenther Paltauf
Summary: This study demonstrates an alternative approach for photoacoustic imaging using illumination patterns obtained from a Hadamard matrix. The generated ultrasound waves are measured with a single detector and reconstructed using computational ghost imaging. Compared to raster scan, this method provides better contrast-to-noise ratio by illuminating multiple pixels simultaneously and allows for depth-resolved imaging by exploiting temporal information. It is particularly valuable in situations where sample radiant exposure is limited due to safety precautions or properties of the light source.
Article
Nanoscience & Nanotechnology
Andrea Chiuri, Federico Angelini, Simone Santoro, Marco Barbieri, Ilaria Gianani
Summary: This study presents a device that utilizes spatial and spectral correlations in parametric down-conversion. By using a ghost imaging arrangement, the frequency profile of a composite system can be remotely reconstructed. The device is capable of detecting distinct spatial regions and identifying the spectral components solely based on the collected data without prior information. This approach is particularly useful in low-count regime experiments.
Article
Optics
Teng Jiang, Yanfeng Bai, Wei Tan, Xiaohui Zhu, Xianwei Huang, Suqin Nan, Xiquan Fu
Summary: Research on practical applications of ghost imaging lidar system, especially in longer sensing distance, has become urgent in recent years. In this paper, we have developed a ghost imaging lidar system that significantly improves the transmission distance of the collimated pseudo-thermal beam over long range. By adjusting the lens assembly, the system can also generate a wide field of view suitable for short-range imaging. Experimental analysis and verification of the changing tendency of illuminating field of view, energy density, and reconstructed images are presented. Some considerations for improving this lidar system are also discussed.
Article
Multidisciplinary Sciences
Chane Moodley, Andrew Forbes
Summary: This study proposes a super-resolved imaging approach based on neural networks in quantum ghost imaging. By reconstructing a low resolution image and applying denoising and super-resolution, significant resolution enhancement is achieved.
SCIENTIFIC REPORTS
(2022)
Article
Optics
Dmitri B. Horoshko
Summary: Temporal ghost imaging is a method that utilizes the temporal correlations of two optical beams to form an image of a temporal object. Recent experiments have achieved a resolution of 55 ps, limited by the photodetector resolution time. To further improve the temporal resolution, it is proposed to form a spatial ghost image of the temporal object by exploiting strong temporal-spatial correlations between two entangled beams. It has been demonstrated that sub-picosecond-scale temporal resolution is achievable using realistic sources of entangled photons.
