Snapshot multidimensional photography through active optical mapping

Park, Jong Chan; Feng, Xiaohua; Liang, Rongguang; Gao, Liang

doi:10.1038/s41467-020-19418-0

Cited by 15 publications

(10 citation statements)

References 42 publications

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“…The snapshot method could simultaneously capture both spatial and spectral information, which enables real-time spectral imaging. As real-time imaging is very important in medical imaging areas, the snapshot method has been continuously developed to improve spatial and spectral resolution, while maintaining imaging speed [44][45][46][47].…”

Section: Medical Hyperspectral Imaging Systemmentioning

confidence: 99%

Hyperspectral Imaging for Clinical Applications

Yoon

2022

BioChip J

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Measuring morphological and biochemical features of tissue is crucial for disease diagnosis and surgical guidance, providing clinically significant information related to pathophysiology. Hyperspectral imaging (HSI) techniques obtain both spatial and spectral features of tissue without labeling molecules such as fluorescent dyes, which provides rich information for improved disease diagnosis and treatment. Recent advances in HSI systems have demonstrated its potential for clinical applications, especially in disease diagnosis and image-guided surgery. This review summarizes the basic principle of HSI and optical systems, deep-learning-based image analysis, and clinical applications of HSI to provide insight into this rapidly growing field of research. In addition, the challenges facing the clinical implementation of HSI techniques are discussed.

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Section: Medical Hyperspectral Imaging Systemmentioning

confidence: 99%

Hyperspectral Imaging for Clinical Applications

Yoon

2022

BioChip J

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“…In recent years, researchers have explored various approaches to improve mapping quality and processing efficiency [ 9 , 10 , 11 ]. For instance, the use of a liquid crystal spatial light modulator (SLM) has been proposed as a replacement for traditional passive mappers, enhancing system control flexibility [ 12 ]. Some researchers have employed two-photon polymerization (2PP) to produce serrated image mappers [ 13 ], successfully addressing the edge eating problem.…”

Section: Introductionmentioning

confidence: 99%

Research on Image Mapping Spectrometer Based on Ultra-Thin Glass Layered Mapping

Zhou,

Lv,

Zhou

et al. 2024

Sensors

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The imaging quality of the Mapping Imaging Spectrometer (IMS) is crucial for spectral identification and detection performance. In IMS, the image mapper significantly influences the imaging quality. Traditional image mappers utilize a single-point diamond machining process. This process leads to inevitable edge eating phenomena that further results in noticeable deficiencies in imaging, impacting spectral detection performance. Therefore, we propose a manufacturing process for the image mapper based on ultra-thin layered glass. This process involves precision polishing of ultra-thin glass with two-dimensional angles, systematically assembling it into an image mapper. The surface roughness after coating is generally superior to 10 nm, with a maximum angle deviation of less than 3′. This results in high mapping quality. Subsequently, a principle verification experimental system was established to conduct imaging tests on real targets. The reconstructed spectrum demonstrates excellent alignment with the results obtained from the Computed Tomography Imaging Spectrometer (CTIS). We thereby validate that this approach effectively resolves the issues associated with edge eating (caused by traditional single-point diamond machining), and leads to improved imaging quality. Also when compared to other techniques (like two-photon polymerization (2PP)), this process demonstrates notable advantages such as simplicity, efficiency, low processing costs, high fault tolerance, and stability, showcasing its potential for practical applications.

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“…CS and DLP have been successfully applied in various measurement applications such as light-beam induced current imaging for PV [23] and fluorescence microscopy for biology applications [24]. Recent work has also been carried out towards achieving temporally or spectrally resolved PL imaging using liquid crystal spatial modulators [25]. There have also been recent publications of implementing CS for hyperspectral imaging by utilising a DMD on the detection side of the optical system [26].…”

Section: Introductionmentioning

confidence: 99%

Development of time-resolved photoluminescence microscopy of semiconductor materials and devices using a compressed sensing approach

Baltušis,

Koutsourakis,

Wood

et al. 2023

Meas. Sci. Technol.

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Charge carrier lifetime is a key property of semiconductor materials for photonic applications. One of the most established methods for measuring lifetimes is time-resolved photoluminescence (TRPL), which is typically performed as a single-point measurement. In this paper, we demonstrate a new time-correlated single photon counting method (TCSPC) for TRPL microscopy, for which spatial information can be achieved without requiring point-by-point scanning through the use of a compressed sensing approach. This enables image acquisition with a single pixel detector for mapping the lifetime of semiconductors with high repeatability. The methodology for signal acquisition and image reconstruction was developed and tested through simulations. Effects of noise levels on the reliability and quality of image reconstruction were investigated. Finally, the method was implemented experimentally to demonstrate a proof-of-concept compressed sensing TCSPC imaging system for acquiring TRPL maps of semiconductor materials and devices. TRPL imaging results of a semiconductor device acquired using a compressed sensing approach are presented and compared with results of TRPL mapping of the same excitation area measured through a point-by-point method. The feasibility of the methodology is demonstrated and the benefits and challenges of the experimental prototype system are presented and discussed.

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Snapshot multidimensional photography through active optical mapping

Cited by 15 publications

References 42 publications

Hyperspectral Imaging for Clinical Applications

Hyperspectral Imaging for Clinical Applications

Research on Image Mapping Spectrometer Based on Ultra-Thin Glass Layered Mapping

Development of time-resolved photoluminescence microscopy of semiconductor materials and devices using a compressed sensing approach

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