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Multi-aperture optical imaging systems and their mathematical light field acquisition models Review Article

Qiming QI, Ruigang FU, Zhengzheng SHAO, Ping WANG, Hongqi FAN

Frontiers of Information Technology & Electronic Engineering 2022, Volume 23, Issue 6,   Pages 823-844 doi: 10.1631/FITEE.2100058

Abstract:

Inspired by the compound eyes of insects, many s have been proposed to improve the imaging qualityThe mathematical tools simplify the quantitative design and evaluation of imaging systems for researchers

Keywords： Multi-aperture optical imaging system     Artificial compound eye     Light field camera     Camera array     Lightfield acquisition model    

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Development of real-time onion disease monitoring system using image acquisition

Du-Han KIM, Kyeong-Hwan LEE, Chang-Hyun CHOI, Tae-Hyun CHOI, Yong-Joo KIM

Frontiers of Agricultural Science and Engineering 2018, Volume 5, Issue 4,   Pages 469-474 doi: 10.15302/J-FASE-2018213

Abstract: monitoring was conducted on onion which is the most representative crop in Republic of Korea, using an image acquisitionsystem newly developed for the mobile measurement of phenotype.The image acquisition system was consisted of two parts, a motorized driving system and a PTZ (pan, tiltAs a result, the use of image acquisition system in image processing analysis will enable more prompt

Keywords： imaging acquisition system     disease     downy mildew     onion    

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A Miniature Meta-Optical System for Reconfigurable Wide-Angle Imaging and Polarization-Spectral Detection

Fei Zhang,Minghao Liao,Mingbo Pu,Yinghui Guo,Lianwei Chen,Xiong Li,Qiong He,Tongtong Kang,Xiaoliang Ma,Yuan Ke,Xiangang Luo,

Engineering doi: 10.1016/j.eng.2023.07.008

Abstract: Wide-angle imaging and spectral detection play vital roles in tasks such as target tracking, object classificationdetection in a miniature shared-aperture meta-optical system is realized for the first time via theThe proposed system supports the imaging (spectral) resolution of approximately 27.8 line-pairs per millimeter(lp·mm−1; ∼80 nm) for an imaging (spectral) mode from 8 to 14 μm.This system also bears a large field of view of about 70°, enabling multi-target recognition in both

Keywords： Metasurfaces     Reconfigurable     Imaging     Spectral    

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Analysis and control of micro-stepping characteristics of ultrasonic motor

Ning CHEN, Jieji ZHENG, Xianliang JIANG, Shixun FAN, Dapeng FAN

Frontiers of Mechanical Engineering 2020, Volume 15, Issue 4,   Pages 585-599 doi: 10.1007/s11465-019-0577-3

Abstract: Micro-stepping motion of ultrasonic motors satisfies biomedical applications, such as cell operation and nuclear magnetic resonance, which require a precise compact-structure non-magnetization positioning device. When the pulse number is relatively small, the stopping characteristics have a non-negligible effect on the entire stepwise process. However, few studies have been conducted to show the rule of the open-loop stepwise motion, especially the shutdown stage. In this study, the modal differences of the shutdown stage are found connected with amplitude and velocity at the turn-off instant. Changes of the length in the contact area and driving zone as well as the input currents, vibration states, output torque, and axial pressure are derived by a simulation model to further explore the rules. The speed curves and vibration results in functions of different pulse numbers are compared, and the stepwise motion can be described by a two-stage two-order transfer function. A test workbench based on the Field Programmable Gate Array is built for acquiring the speed, currents, and feedback voltages of the startup–shutdown stage accurately with the help of its excellent synchronization performances. Therefore, stator vibration, rotor velocity, and terminal displacements under different pulse numbers can be compared. Moreover, the two-stage two-order model is identified on the stepwise speed curves, and the fitness over 85% between the simulation and test verifies the model availability. Finally, with the optimization of the pulse number, the motor achieves 3.3 µrad in clockwise and counterclockwise direction.

Keywords： ultrasonic motor     stepping characteristics     pulse number control     synchronous acquisition system     precise    

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The Application of Risk Matrix to Acquisition Risk Evaluation for Weapon and Equipment

Li Zhongmin,Wei Yiming,Tang Shuchun,Chen Jian

Strategic Study of CAE 2006, Volume 8, Issue 6,   Pages 95-99

Abstract:

Risk evaluation is the basis of acquisition management for weapon and equipment.summarizing risk matrix widely used abroad, the paper firsdy discusses the application of risk matrix in acquisition

Keywords： risk matrix     risk evaluation     acquisition for weapon and equipment    

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evaluation of renal function using diffusion weighted imaging and diffusion tensor imaging in type 2

Xiaoyan Chen,Wenxia Xiao,Xinchun Li,Jianxun He,Xiaochun Huang,Yuyu Tan

Frontiers of Medicine 2014, Volume 8, Issue 4,   Pages 471-476 doi: 10.1007/s11684-014-0365-8

Abstract:

This work aims to estimate the value of diffusion weighted imaging (DWI) and diffusion tensor imaging

Keywords： type 2 diabetes mellitus     microalbuminuria     diffusion weighted imaging     diffusion tensor imaging     early-stage    

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Quality control based on electrode displacement and force in resistance spot welding

Chuntao JI, Lipeng DENG

Frontiers of Mechanical Engineering 2010, Volume 5, Issue 4,   Pages 412-417 doi: 10.1007/s11465-010-0114-x

Abstract: Data were collected via a multichannel high-speed data acquisition system and were analyzed with MATLAB

Keywords： aluminum     electrode displacement     electrode force     nugget size     data acquisition    

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Carbon dots-based fluorescence sensor for two-photon imaging of pH in diabetic mice

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 3,   Pages 298-306 doi: 10.1007/s11705-022-2212-9

Abstract: Finally, the CA-CDs has been successfully applied for two-photon imaging of the pH in liver and kidneyImaging results showed that the pH value in kidney of diabetic mice was lower than that of the normal

Keywords： carbon dots     two-photon imaging     pH     diabetic mice    

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In vivo imaging of hematopoietic stem cell development in the zebrafish

Panpan Zhang, Feng Liu

Frontiers of Medicine 2011, Volume 5, Issue 3,   Pages 239-247 doi: 10.1007/s11684-011-0123-0

Abstract: imaging is crucial for developmental biology and can further help to follow cell development/differentiationRecent advances in optical imaging techniques has facilitated tracing of the developmental dynamics ofThe zebrafish is an excellent model for imaging of hematopoiesis due to its transparent embryo at earlyIn this review, we summarize recent studies related to the non-invasive imaging of HSC transgenics,

Keywords： hematopoietic stem cell     hematopoiesis     in vivo imaging     transgenics     zebrafish    

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Design and implementation of structural monitoring systems for Xihoumen Bridge (II): Implementations

Liu Zhiqiang,Li Na,Guo Jian,Feng Liangping,Song Gang

Strategic Study of CAE 2010, Volume 12, Issue 7,   Pages 101-106

Abstract:

The structural monitoring system for Xihoumen Bridge is designed andThe loads and responses of the bridge are analyzed when the structural monitoring system is running andThe results indicate the structural monitoring system for Xihoumen Bridge is running normally and achievesThe distributed data acquisition and transmission system based on industrial Ethernet is applied anddeveloped well in the bridge structural monitoring system, and can be popularized.

Keywords： bridge     structural monitoring     industrial ethernet     distributed data acquisition and transmission system     system integration    

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Anefficient quadrature demodulator for medical ultrasound imaging

Hao ZHOU,Yin-fei ZHENG

Frontiers of Information Technology & Electronic Engineering 2015, Volume 16, Issue 4,   Pages 301-310 doi: 10.1631/FITEE.1400205

Abstract: Quadrature demodulation is used in medical ultrasound imaging to derive the envelope and instantaneousIn this paper, we propose an efficient quadrature demodulation method for B-mode and color flow imagingIn the in vivo color flow imaging experiments, the time of the demodulation process was 5.66 ms and 3.36

Keywords： B-mode ultrasound imaging     Color flow imaging     Quadrature demodulation     Finite impulse response filter    

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Light field imaging: models, calibrations, reconstructions,and applications Review

Hao ZHU, Qing WANG, Jingyi YU

Frontiers of Information Technology & Electronic Engineering 2017, Volume 18, Issue 9,   Pages 1236-1249 doi: 10.1631/FITEE.1601727

Abstract: Light field imaging is an emerging technology in computationalphotography areas.Based on innovative designs of the imaging modeland the optical path, light field cameras not only recordFinally,open issues in light field imaging and long-term application prospectsin other natural sciences

Keywords： Light field imaging     Plenoptic function     Imaging model     Calibration     Reconstruction    

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Simultaneous acquisition of CT angiography and whole brain CT perfusion images by using multiphase dynamic

Weiwei CHEN, Jianpin QI, Wenzhen ZHU, Wenhua HUANG, Jinmei SONG

Frontiers of Medicine 2009, Volume 3, Issue 2,   Pages 230-235 doi: 10.1007/s11684-009-0023-8

Abstract: We implemented a new protocol — multiphase dynamic helical scan to acquire CT angiography (CTA) and whole brain CT perfusion (CTP) images simultaneously with single scan on 16 multidetector CT (MDCT). A total of 90 patients who were randomly assigned into 3 groups were included in our study. Each group underwent CT scan by using the new protocol, traditional CTA and CTP protocol, respectively. The image quality of CTA, the CTP parameter values and the X-ray doses were measured and compared between the new protocol and the traditional protocols. There was no statistically significant difference in the CTA image quality between the above methods ( =0.55). For CTP parameters, the new protocol tended to overestimate the blood volume (BV) and blood flow (BF) value, and to underestimate the mean transit time (MTT) value compared with the traditional method. However, there was no statistically significant difference in BV, BF, and MTT value between the two methods except permeability surface (PS) ( >0.05). The volume CT dose index (CTDIvol) and dose length product (DLP) of our protocol were lower than the traditional one. The new protocol can obtain valuable diagnostic information in a shorter time without significant compromise in image quality. In addition, it reduces the radiation dose as well as contrast medium usage on the patient.

Keywords： computed tomography angiography     computed tomography perfusion    

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Synthesis and application of superparamagnetic iron oxide nanoparticles in targeted therapy and imaging

Liangqian Tong, Ming Zhao, Shu Zhu, Jing Chen

Frontiers of Medicine 2011, Volume 5, Issue 4,   Pages 379-387 doi: 10.1007/s11684-011-0162-6

Abstract: Superparamagnetic iron oxide (SPIO) nanoparticles have become a popular strategy of cancer treatment and molecular imaging, targeted ligand-conjugated, and/or drug-loaded SPIO nanoparticles, as powerful tools for targeted imagingadvancements in the field of SPIO nanoparticles in terms of synthesis, targeted therapy, and cancer imaging

Keywords： nanoparticles     superparamagnetic iron oxide     targeted therapy     molecular imaging     cancer    

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A highly selective fluorescent probe for real-time imaging of UDP-glucuronosyltransferase 1A8 in living

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 1,   Pages 103-111 doi: 10.1007/s11705-021-2064-8

Abstract: Uridine diphosphate (UDP)-glucuronosyltransferases (UGTs) are enzymes involved in the biotransformation of important endogenous compounds such as steroids, bile acids, and hormones as well as exogenous substances including drugs, environmental toxicants, and carcinogens. Here, a novel fluorescent probe BDMP was developed based on boron-dipyrromethene (BODIPY) with high sensitivity for the detection of UGT1A8. The glucuronidation of BDMP not only exhibited a red-emission wavelength (λex/λem = 500/580 nm), but also displayed an excellent UGT1A8-dependent fluorescence signal with a good linear relationship with UGT1A8 concentration. Based on this perfect biocompatibility and cell permeability, BDMP was successfully used to image endogenous UGT1A8 in human cancer cell lines (LoVo and HCT15) in real time. In addition, BDMP could also be used to visualize UGT1A8 in tumor tissues. These results suggested that BDMP is a promising molecular tool for the investigation of UGT1A8-mediated physiological function in humans.

Keywords： UDP-glucuronosyltransferase 1A8     fluorescent probe     subtype selectivity     fluorescence imaging    

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Title Author Date Type Operation

Multi-aperture optical imaging systems and their mathematical light field acquisition models

Qiming QI, Ruigang FU, Zhengzheng SHAO, Ping WANG, Hongqi FAN

Journal Article

Development of real-time onion disease monitoring system using image acquisition

Du-Han KIM, Kyeong-Hwan LEE, Chang-Hyun CHOI, Tae-Hyun CHOI, Yong-Joo KIM

Journal Article

A Miniature Meta-Optical System for Reconfigurable Wide-Angle Imaging and Polarization-Spectral Detection

Fei Zhang,Minghao Liao,Mingbo Pu,Yinghui Guo,Lianwei Chen,Xiong Li,Qiong He,Tongtong Kang,Xiaoliang Ma,Yuan Ke,Xiangang Luo,

Journal Article

Analysis and control of micro-stepping characteristics of ultrasonic motor

Ning CHEN, Jieji ZHENG, Xianliang JIANG, Shixun FAN, Dapeng FAN

Journal Article

The Application of Risk Matrix to Acquisition Risk Evaluation for Weapon and Equipment

Li Zhongmin,Wei Yiming,Tang Shuchun,Chen Jian

Journal Article

evaluation of renal function using diffusion weighted imaging and diffusion tensor imaging in type 2

Xiaoyan Chen,Wenxia Xiao,Xinchun Li,Jianxun He,Xiaochun Huang,Yuyu Tan

Journal Article

Quality control based on electrode displacement and force in resistance spot welding

Chuntao JI, Lipeng DENG

Journal Article

Carbon dots-based fluorescence sensor for two-photon imaging of pH in diabetic mice

Journal Article

In vivo imaging of hematopoietic stem cell development in the zebrafish

Panpan Zhang, Feng Liu

Journal Article

Design and implementation of structural monitoring systems for Xihoumen Bridge (II): Implementations

Liu Zhiqiang,Li Na,Guo Jian,Feng Liangping,Song Gang

Journal Article

Anefficient quadrature demodulator for medical ultrasound imaging

Hao ZHOU,Yin-fei ZHENG

Journal Article

Light field imaging: models, calibrations, reconstructions,and applications

Hao ZHU, Qing WANG, Jingyi YU

Journal Article

Simultaneous acquisition of CT angiography and whole brain CT perfusion images by using multiphase dynamic

Weiwei CHEN, Jianpin QI, Wenzhen ZHU, Wenhua HUANG, Jinmei SONG

Journal Article

Synthesis and application of superparamagnetic iron oxide nanoparticles in targeted therapy and imaging

Liangqian Tong, Ming Zhao, Shu Zhu, Jing Chen

Journal Article

A highly selective fluorescent probe for real-time imaging of UDP-glucuronosyltransferase 1A8 in living

Journal Article