Degradation in LED night vision imaging and recovery algorithms

Chen, Yuzhang; Li, Yang; Zeng, Zhangfan; Ren, Qi; Xu, Xuejie; Zhang, Qin; Xu, Taotao; Ouyang, Shiyu

doi:10.1016/j.ijleo.2017.05.079

Cited by 8 publications

(3 citation statements)

References 6 publications

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“…With the need of various practical applications at night, night vision target detections have been widely used in many fields, especially in video surveillance and recording. [ 156 ] The existing night vision technology is classified by light source such as halogen lamp, microlight amplification, and IR illumination. Among them, NIR LEDs with the advantages of small volume and low power consumption have been applied in night vision assisted driving or video recording.…”

Section: Application Explorationmentioning

confidence: 99%

Recent Advances in Chromium‐Doped Near‐Infrared Luminescent Materials: Fundamentals, Optimization Strategies, and Applications

Dang

Wei

Liu

et al. 2022

Advanced Optical Materials

108

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Development of chromium-doped luminescent materials is pertinent to many emerging applications, ranging from agriculture, food industry to noninvasive health monitoring. The fundamental importance of chromium-activated luminescent materials in the field of optics and biomedicine makes the rapid development of novel materials and relevant applications. Herein, the recent advances on the luminescence principle and photoluminescence (PL) optimization for Cr 3+ -activated luminescent materials together with their potential applications are reviewed. The different types of most recently developed Cr 3+ -doped luminescent materials and the design principles are systematically summarized. The associations between crystal structure and nearinfrared (NIR) PL properties, as well as performance-evaluating parameters are introduced with the examples of known NIR emitting phosphors, which will be helpful to explore future NIR luminescent materials. Based on crystal field control, site engineering, and electron-phonon coupling, several efficient strategies for optimizing luminescence performances including bandwidth, thermal stability, and quantum efficiency of Cr 3+ -doped NIR luminescent materials are proposed. Then, potential applications in the fields of food analysis, night vision, information encryption, and optical sensors are surveyed. Finally, the challenges of promising Cr 3+ -doped luminescent materials are proposed.

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Section: Application Explorationmentioning

confidence: 99%

Recent Advances in Chromium‐Doped Near‐Infrared Luminescent Materials: Fundamentals, Optimization Strategies, and Applications

Dang

Wei

Liu

et al. 2022

Advanced Optical Materials

108

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“…The night vision imaging technique has been widely used in many fields, such as night vision auxiliary driving, security monitoring, and military reconnaissance. 166,273 In a night vision imaging system, NIR light is reflected by objects and then received by imager. Night vision relies on NIR light sources for imaging and requires sufficient light to create a usable image.…”

Section: Night Vision Imagingmentioning

confidence: 99%

Near‐infrared emitting metal halide materials: Luminescence design and applications

Liu,

Dang,

Zhang

et al. 2024

InfoMat

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Near‐infrared (NIR) luminescent metal halide (LMH) materials have attracted great attention in various optoelectronic applications due to their low‐temperature solution‐processable synthesis, abundant crystallographic/electronic structures, and unique optoelectronic properties. However, some challenges still remain in their luminescence design, performance improvement, and application assignments. This review systematically summarizes the development of NIR LMHs through classifying NIR luminescent origins into four major categories: band‐edge emission, self‐trapped exciton (STE) emission, ion emission, and defect‐related emission. The luminescence mechanisms of different types of NIR LMHs are discussed in detail by analyzing typical examples. Reasonable strategies for designing and optimizing luminescence/optoelectronic properties of NIR LMHs are summarized, including bandgap engineering, self‐trapping state engineering, chemical composition modification, energy transfer, and other auxiliary strategies such as improvement of synthesis scheme and post‐processing. Furthermore, application prospects based on the optoelectronic devices are revealed, including phosphor‐converted light‐emitting diodes (LEDs), electroluminescent LEDs, photodetectors, solar cells, and x‐ray scintillators, as well as demonstrations of some related practical applications. Finally, the existing challenges and future perspectives on the development of NIR LMH materials are critically proposed. This review aims to provide general understanding and guidance for the design of high‐performance NIR LMHs materials.image

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“…Using PSF as prior knowledge, the main principle of the blind restoration and total variation regularization superresolution reconstruction can be generally described as the following iterative equations which is studied by previous works [31], [37]:…”

Section: Suspended Particle Transfer Factormentioning

confidence: 99%

A New Degradation Model for Imaging in Natural Water and Validation Through Image Recovery

2019

Self Cite

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Scattering and turbulence are the main factors affecting imaging in natural water environment. A new model for underwater turbulent degradation is obtained by calculating the scattering transfer factors including the intensity distribution of beam propagation, turbulent fluid medium and suspended particle. In order to verify the proposed model, a controlled laboratory simulation system of turbulent water is established, from which the degradation transfer factor is measured and compared by image restoration and reconstruction. The new model is also applied for field tests in natural ocean water. Experimental results show that based on the proposed model, effect of image restoration and reconstruction can be substantially improved, which proves the correctness and validity of the model.

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Degradation in LED night vision imaging and recovery algorithms

Cited by 8 publications

References 6 publications

Recent Advances in Chromium‐Doped Near‐Infrared Luminescent Materials: Fundamentals, Optimization Strategies, and Applications

Recent Advances in Chromium‐Doped Near‐Infrared Luminescent Materials: Fundamentals, Optimization Strategies, and Applications

Near‐infrared emitting metal halide materials: Luminescence design and applications

A New Degradation Model for Imaging in Natural Water and Validation Through Image Recovery

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