Resource Type

Journal Article 325

Conference Information 44

Conference Videos 18

Year

2024 2

2023 34

2022 33

2021 19

2020 51

2019 45

2018 28

2017 26

2016 9

2015 12

2014 3

2013 7

2012 15

2011 5

2010 6

2009 6

2008 4

2007 14

2006 11

2005 6

open ︾

Keywords

Artificial intelligence 5

Computer vision 5

Deep learning 5

Cloud computing 4

computer 4

computer simulation 3

Additive manufacturing 2

Big data 2

Blockchain 2

COVID-19 2

Camera array 2

Compressed sensing 2

Computational imaging 2

Computational methods 2

Crowdsourcing 2

Fog computing 2

Heterogeneous computing 2

High-performance computing 2

IHNI－1 reactor 2

open ︾

Search scope:

排序： Display mode:

Review of compact computational spectral information acquisition systems Review Articles

Hongya Song, Wenyi Zhang, Haifeng Li, Xu Liu, Xiang Hao,haox@zju.edu.cn

Frontiers of Information Technology & Electronic Engineering 2020, Volume 21, Issue 8,   Pages 1119-1266 doi: 10.1631/FITEE.1900266

Abstract: With the development of computer science, more and more hardware implementations can be reproduced by software programming, bringing compact, cheap, and fast components to imaging instrumentation. In recent years, computational methods have been introduced into spectral detection, and computational spectrum acquisition implementations have emerged. This paper highlights the advantages of computational spectrum acquisition implementations by comparing them with traditional non-computational methods. Then, focusing on the compact feature, we review the most representative implementations, and finally make discussion and offer an outlook.

Keywords： 光谱成像；计算成像；光谱仪    

HTML PDF Collect

Emerging theories and technologies on computationalimaging Review

Xue-mei HU, Jia-min WU, Jin-li SUO, Qiong-hai DAI

Frontiers of Information Technology & Electronic Engineering 2017, Volume 18, Issue 9,   Pages 1207-1221 doi: 10.1631/FITEE.1700211

Abstract: Computational imaging describes the whole imaging process fromthe perspective of light transport and information transmission, featurestraditional optical computing capabilities, and assists in breakingthrough the limitations of visual information recording. Progressin computational imaging promotes the development of diverse basicand applied disciplines. In this review, we provide an overview ofthe fundamental principles and methods in computational imaging, thehistory of this field, and the important roles that it plays in thedevelopment of science. We review the most recent and promising advancesin computational imaging, from the perspective of different dimensionsof visual signals, including spatial dimension, temporal dimension,angular dimension, spectral dimension, and phase. We also discusssome topics worth studying for future developments in computationalimaging.

Keywords： Computational imaging     Multi-scale and multi-dimensional     Super-resolution     Femto-photography     3D reconstruction     Hyperspectral imaging    

HTML PDF Collect

Fingerprint Spectral Signatures Revealing the Spatiotemporal Dynamics of Bipolaris Spot Blotch Progression for Presymptomatic Diagnosis Article

Fengle Zhu, Zhenzhu Su, Alireza Sanaeifar, Anand Babu Perumal, Mostafa Gouda, Ruiqing Zhou, Xiaoli Li, Yong He

Engineering 2023, Volume 22, Issue 3,   Pages 171-184 doi: 10.1016/j.eng.2022.10.006

Abstract:

Plant pathogens continuously impair agricultural yields and food security. Therefore, the dynamic characterization of early pathogen progression is crucial for disease monitoring and presymptomatic diagnosis. Hyperspectral imaging (HSI) has great potential for tracking the dynamics of initial infected sites for presymptomatic diagnosis; however, no related studies have extracted fingerprint spectral signatures (FSSs) that can capture diseased lesions on leaves during the early infection stage in vivo or investigated the detection mechanism of HSI relating to the host biochemical responses. The FSSs denote unique and representative spectral signatures that characterize a specific plant disease. In this study, the FSSs of spot blotch on barley leaves inoculated with Bipolaris sorokiniana were discovered to characterize symptom development for presymptomatic diagnosis based on time-series HSI data analysis. The early spectral and biochemical responses of barley leaves to spot blotch progression were also investigated. The fullspectrum FSSs were physically interpretable and could capture the unique characteristics of chlorotic and necrotic tissues along with lesion progression, enabling the in situ visualization of the spatiotemporal dynamics of early plant–pathogen interactions at the pixel level. Presymptomatic diagnosis of spot blotch was achieved 24 h after inoculation—12 h earlier than the traditional polymerase chain reaction (PCR) assay or biochemical measurements. To uncover the mechanism of HSI presymptomatic diagnosis, quantitative relationships between the mean spectral responses of leaves and their biochemical indicators (chlorophylls, carotenoids, malondialdehyde (MDA), ascorbic acid (AsA), and reduced glutathione (GSH)) were developed, achieving determination coefficient of prediction set (Rp2) > 0.84 for regression models. The overall results demonstrated that, based on the association between HSI and in vivo planttrait alterations, the extracted FSSs successfully tracked the spatiotemporal dynamics of bipolaris spot blotch progression for presymptomatic diagnosis. Tests of this methodology on other plant diseases demonstrated its remarkable generalization potential for the early control of plant diseases.

Keywords： Hyperspectral imaging     Fingerprint spectral signatures     Spot blotch     Leaf lesion progression     Presymptomatic diagnosis     Biochemical indicators    

HTML PDF Collect

TRMM satellite onboard instruments and the application on precipitation analysis of their measurements

Fu Yunfei,Liu Qi,Wang Yu,Sun Liang,Li Rui,Ma Ming,Liu Guosheng

Strategic Study of CAE 2012, Volume 14, Issue 10,   Pages 43-50

Abstract:

The method of satellite infrared and passive microwave remote sensing for precipitation were briefly introduced firstly. The instruments onboard the tropical rainfall measurement mission (TRMM) satellite and the application of their measurements were discussed . As for example, precipitation structure, relationship among altitude of cloud top and rain top with surface rain rate for a summer hot convective precipitation system were brought forth together with analyzing of long time dataset of the TRMM precipitation radar on precipitation climatology in Asia.At last, the prospect of the satellite active and passive remote sensing of precipitation in the near future were given.

Keywords： TRMM     precipitation radar     microwave imager     spectrum     precipitation    

HTML PDF Collect

Phase problems in optical imaging Review

Guo-hai SITU, Hai-chao WANG

Frontiers of Information Technology & Electronic Engineering 2017, Volume 18, Issue 9,   Pages 1277-1287 doi: 10.1631/FITEE.1700298

Abstract: Because the phase contains more information about the fieldcompared to the amplitude, measurement of the phase is encounteredin many branches of modern science and engineering. Direct measurementof the phase is difficult in the visible regime of the electromagneticwave. One must employ computational techniques to calculate the phasefrom the captured intensity. In this paper, we provide a review ofour recent work on iterative phase retrieval techniques and theirapplications in optical imaging.

Keywords： Phase retrieval     Phase imaging     Computational imaging     Gerchberg-Saxton algorithm     Optical encryption     Computer-generated hologram    

HTML PDF Collect

Analysis and research on extending lifespan technology of FY-3 microwave radiation imager

Liu Gaofeng,Chen Weiying,Weng Yihang,Yu Shuang and Wang Hua

Strategic Study of CAE 2013, Volume 15, Issue 7,   Pages 101-105

Abstract:

Considering the characteristics of Fengyun-3(FY-3) satellite lifespan on orbit increased from 3 years to 5 years, the risk of extending lifespan was analyzed, and the reliability of scan driver system and receiver system which were critical items of microwave radiation imager was evaluated, taking corresponding measures from design and improving crafts reliability. Microwave radiation imager operates normally on orbit and provides effective reliability assurance according to these methods. Finally, the ideal of accelerated lifespan test was put forward at last.

Keywords： microwave radiation imager     scan driver     receiver     lifespan     reliability    

HTML PDF Collect

Principles and applications of high-speed single-pixelimaging technology Review

Qiang GUO, Yu-xi WANG, Hong-wei CHEN, Ming-hua CHEN, Si-gang YANG, Shi-zhong XIE

Frontiers of Information Technology & Electronic Engineering 2017, Volume 18, Issue 9,   Pages 1261-1267 doi: 10.1631/FITEE.1601719

Abstract: Single-pixel imaging (SPI) technology has garnered great interestwithin the last decade because of its ability to record high-resolutionimages using a single-pixel detector. It has been applied to diversefields, such as magnetic resonance imaging (MRI), aerospace remotesensing, terahertz photography, and hyperspectral imaging. Comparedwith conventional silicon-based cameras, single-pixel cameras (SPCs)can achieve image compression and operate over a much broader spectralrange. However, the imaging speed of SPCs is governed by the responsetime of digital micromirror devices (DMDs) and the amount of compressionof acquired images, leading to low (ms-level) temporal resolution.Consequently, it is particularly challenging for SPCs to investigatefast dynamic phenomena, which is required commonly in microscopy.Recently, a unique approach based on photonic time stretch (PTS) toachieve high-speed SPI has been reported. It achieves a frame ratefar beyond that can be reached with conventional SPCs. In this paper,we first introduce the principles and applications of the PTS technique.Then the basic architecture of the high-speed SPI system is presented,and an imaging flow cytometer with high speed and high throughputis demonstrated experimentally. Finally, the limitations and potentialapplications of high-speed SPI are discussed.

Keywords： Compressive sampling     Single-pixel imaging     Photonic time stretch     Imaging flow cytometry    

HTML PDF Collect

High-resolution spectral video acquisition Review

Lin-sen CHEN, Tao YUE, Xun CAO, Zhan MA, David J. BRADY

Frontiers of Information Technology & Electronic Engineering 2017, Volume 18, Issue 9,   Pages 1250-1260 doi: 10.1631/FITEE.1700098

Abstract: Compared with conventional cameras, spectral imagers providemany more features in the spectral domain. They have been used invarious fields such as material identification, remote sensing, precisionagriculture, and surveillance. Traditional imaging spectrometers usegenerally scanning systems. They cannot meet the demands of dynamicscenarios. This limits the practical applications for spectral imaging.Recently, with the rapid development in computational photographytheory and semiconductor techniques, spectral video acquisition hasbecome feasible. This paper aims to offer a review of the state-of-the-artspectral imaging technologies, especially those capable of capturingspectral videos. Finally, we evaluate the performances of the existingspectral acquisition systems and discuss the trends for future work.

Keywords： Multispectral/hyperspectral video acquisition     Snapshot     Under-sampling and reconstruction    

HTML PDF Collect

Light field imaging for computer vision: a survey Review Article

Chen JIA, Fan SHI, Meng ZHAO, Shengyong CHEN

Frontiers of Information Technology & Electronic Engineering 2022, Volume 23, Issue 7,   Pages 1077-1097 doi: 10.1631/FITEE.2100180

Abstract: Light field (LF) imaging has attracted attention because of its ability to solve problems. In this paper we briefly review the research progress in in recent years. For most factors that affect development, the richness and accuracy of visual information acquisition are decisive. LF imaging technology has made great contributions to because it uses cameras or s to record the position and direction information of light rays, acquiring complete three-dimensional (3D) scene information. LF imaging technology improves the accuracy of depth estimation, image segmentation, blending, fusion, and 3D reconstruction. LF has also been innovatively applied to iris and face recognition, identification of materials and fake pedestrians, acquisition of s, shape recovery, and LF microscopy. Here, we further summarize the existing problems and the development trends of LF imaging in , including the establishment and evaluation of the LF dataset, applications under high dynamic range (HDR) conditions, LF image enhancement, virtual reality, 3D display, and 3D movies, military optical camouflage technology, image recognition at micro-scale, image processing method based on HDR, and the optimal relationship between spatial resolution and four-dimensional (4D) LF information acquisition. LF imaging has achieved great success in various studies. Over the past 25 years, more than 180 publications have reported the capability of LF imaging in solving problems. We summarize these reports to make it easier for researchers to search the detailed methods for specific solutions.

Keywords： Light field imaging     Camera array     Microlens array     Epipolar plane image     Computer vision    

HTML PDF Collect

Ground-based Hyperspectral Stereoscopic Remote Sensing Network: A Promising Strategy to Learn Coordinated Control of O3 and PM2.5 over China Article

Cheng Liu, Chengzhi Xing, Qihou Hu, Qihua Li, Haoran Liu, Qianqian Hong, Wei Tan, Xiangguang Ji, Hua Lin, Chuan Lu, Jinan Lin, Hanyang Liu, Shaocong Wei, Jian Chen, Kunpeng Yang, Shuntian Wang, Ting Liu, Yujia Chen

Engineering 2022, Volume 19, Issue 12,   Pages 71-83 doi: 10.1016/j.eng.2021.02.019

Abstract:

With the coming of the “14th Five-Year Plan”, the coordinated control of particulate matter with an aerodynamic diameter no greater than 2.5 μm (PM2.5) and O3 has become a major issue of air pollution prevention and control in China. The stereoscopic monitoring of regional PM2.5 and O3 and their precursors is crucial to achieve coordinated control. However, current monitoring networks are currently inadequate for monitoring the vertical profiles of both PM2.5 and O3 simultaneously and support air quality control. The University of Science and Technology of China (USTC) has established a nationwide ground-based hyperspectral stereoscopic remote sensing network based on multi-axis differential optical absorption spectroscopy (MAX-DOAS) since 2015. This monitoring network provides a significant opportunity for the regional coordinated control of PM2.5 and O3 in China. One-year vertical profiles of aerosol, NO2 and HCHO monitored from four MAX-DOAS stations installed in four megacities (Beijing, Shanghai, Shenzhen, and Chongqing) were used to characterize their vertical distribution differences in four key regions, Jing–Jin–Ji (JJJ), Yangtze River Delta (YRD), Pearl River Delta (PRD), and Sichuan Basin (SB), respectively. The normalized and yearly averaged aerosol vertical profiles below 400 m in JJJ and PRD exhibit a box shape and a Gaussian shape, respectively, and both show exponential shapes in YRD and SB. The NO2 vertical profiles in four regions all exhibit exponential shapes because of vehicle emissions. The shape of the HCHO vertical profile in JJJ and PRD was Gaussian, whereas an exponential shape was shown in YRD and SB. Moreover, a regional transport event occurred at an altitude of 600–1000 m was monitored in the southwest–northeast pathway of the North China Plain (NCP) by five MAX-DOAS stations (Shijiazhuang (SJZ), Wangdu (WD), Nancheng (NC), Chinese Academy of Meteorological Sciences (CAMS), and University of Chinese Academy of Sciences (UCAS)) belonging to the above network. The aerosol optical depths (AOD) in these five stations decreased in the order of SJZ > WD > NC > CAMS > UCAS. The short-distance regional transport of NO2 in the 700–900 m layer was monitored between WD and NC. As an important precursor of secondary aerosol, the peak of NO2 air mass in WD and NC all occurred 1 h earlier than that of aerosol. This was also observed for the short-distance regional transport of HCHO in the 700–900 m layer between NC and CAMS, which potentially affected the O3 concentration in Beijing. Finally, CAMS was selected as a typical site to determine the O3–NOx–volatile organic compounds (VOCs) sensitivities in vertical space. We found the production of O3 changed from predominantly VOCs-limited conditions to mainly mixed VOCs–NOx-limited condition from the 0–100 m layer to the 200–300 m layer. In addition, the downward transport of O3 could contribute to the increase of ground surface O3 concentration. This ground-based hyperspectral stereoscopic remote sensing network provide a promising strategy to support management of PM2.5 and O3 and their precursors and conduct attribution of sources.

Keywords： MAX-DOAS     Stereoscopic monitoring     Regional transport     Ozone production     Control strategy    

HTML PDF Collect

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 record the spatialintensity of threedimensional (3D) objects, but also capture the angularinformation of the physical world, which provides new ways to addressvarious problems in computer vision, such as 3D reconstruction, saliencydetection, and object recognition. In this paper, three key aspectsof light field cameras, i.e., model, calibration, and reconstruction,are reviewed extensively. Furthermore, light field based applicationson informatics, physics, medicine, and biology are exhibited. Finally,open issues in light field imaging and long-term application prospectsin other natural sciences are discussed.

Keywords： Light field imaging     Plenoptic function     Imaging model     Calibration     Reconstruction    

HTML PDF Collect

Evaluation of a typical plateau deep lake by DOM spectral characteristics

Tian Linfeng,Hu Jiwei,Li Cunxiong,Huang Xianfei,Xie Weifang

Strategic Study of CAE 2010, Volume 12, Issue 6,   Pages 80-84

Abstract:

Dissolved organic matter (DOM) is a focus and challenge in the field of water environmental research since it plays an important role in the restoration research of aquatic system. Ultraviolet-visible (UVVIS) spectroscopy and fluorescence spectrophotometer are often used as an effective way for extracting DOM characteristics. In the present research, spectral characteristics of DOM were studied in water samples from different locations of the Hongfeng Lake, a man-made deep karstic lake and a key drinking-water source for Guiyang City, Guizhou Province, and various components of organic matter distributed at different samples were identified. The UV-VIS absorption ratio values (E3/E4) for the water samples collected from the Hongfeng Lake ranged from 1.70 to 8.77,and in general these values at 10 m depth were higher than those at 5 m depth except site HWHDC, while the fluorescence ratio values (f450/f500) ranged from 1.38 to 1.52. It could thus be inferred that the main organic pollution was from terrestrial origin at present. It is found, however, that spectral characteristics of the water samples from sites HWHDC, BHHX and ZG are different from those from the other sites. In addition, the results indicated that the depth of water had correlation with the humification degree of organic matter.

Keywords： dissolved organic matter     ultraviolet-visible spectral characteristics     fluorescence spectroscopy     correlations    

HTML PDF Collect

Current Situation and Trend of the Phosphors for Full Spectrum LED Lighting

Chen Xiaoxia, Zhang Xia, Liu Ronghui, Liu Yuanhong, Zhou Yipeng, Zhuang Weidong

Strategic Study of CAE 2020, Volume 22, Issue 2,   Pages 71-78 doi: 10.15302/J-SSCAE-2020.02.011

Abstract:

With the increase of the requirements for lighting quality, full spectrum light emitting diode (LED) lighting becomes the development hotspot. In this paper, the key materials for full spectrum LED phosphors are discussed and compared in detail. The advantages and disadvantages, research progress, and practical application of various color phosphors excited by violet and near ultraviolet light are emphasized, and then the existing problems, development trend, and industrial direction in this field are analyzed and prospected. Currently, there remain many problems in the phosphors excited by violet and near ultraviolet light, which can be applied in full spectrum. For example, the blue and cyan phosphors take on narrow emission spectrum, low light efficiency, and poor thermal stability; yellow phosphors and far-red phosphors have a low luminous efficiency due to their low absorption of violet or near ultraviolet light; and single matrix white phosphors have insufficient red light emission. Among them, luminous efficiency and thermal stability are the key factors restricting the application of the phosphors. Therefore, it is urgent to research the preparation and application technology of wide spectrum blue, cyan, yellow green, yellow, far-red, and single matrix white phosphors with high light efficiency and thermal stability, and develop the high-efficient and continuous preparation technology of the present phosphor products, to promote the further development of full spectrum LED.

Keywords： full spectrum LED     high-quality lighting     violet LED chip     phosphors    

HTML PDF Collect

Extended Hemispherical Lens and Its Applications in Millimeter Wave Focal Imaging Systems

Sun Zhongliang,Dou Wenbin

Strategic Study of CAE 2000, Volume 2, Issue 3,   Pages 42-47

Abstract:

Recently millimeter wave imaging absorbs many attentions. Especially much research work has been done on the millimeter focal imaging because of its advantage of real time imaging. This paper analyzes extended hemispherical lens, which can be used in focal imaging. An integrated antenna array is placed at the back plane of the lens to receive the power focused by the lens. This structure can eliminate the effect of the surface wave exited in the thick dielectric substrates at millimeter wave wavelengths. Low loss and compact are its merit. Assuming an electromagnetic wave is incident on the lens surface, the field distribution in focal space of the lens is analyzed by using Stratton-Chu formula and ray tracing method. It will provide much information about the imaging performance of the lens. Experiments have been carried out for two types of incident waves, one is normally incident plane wave and another is Gaussian-beam. Good agreement has been found between experiments and calculation results. The lens antenna also can be used to eliminate the transition between paraboloidal antenna and integrated front-end in conventional integrated millimeter wave systems so that the system loss can be decreased and performance can be improved. Furthermore, the lens can be used to couple with a quasi-optical system. The results presented here will provide useful guidelines for the above mentioned applications.

Keywords： millimeter waves     antennas     imaging     extended hemispherical lens    

HTML PDF Collect

Quantitative Investigation of Tomographic Effects in Abnormal Regions of Complex Structures Article

Longjun Dong, Xiaojie Tong, Ju Ma

Engineering 2021, Volume 7, Issue 7,   Pages 1011-1022 doi: 10.1016/j.eng.2020.06.021

Abstract:

The detection of abnormal regions in complex structures is one of the most challenging targets for underground space engineering. Natural or artificial geologic variations reduce the effectiveness of conventional exploration methods. With the emergence of real-time monitoring, seismic wave velocity tomography allows the detection and imaging of abnormal regions to be accurate, intuitive, and quantitative. Since tomographic results are affected by multiple factors in practical small-scale applications, it is necessary to quantitatively investigate those influences. We adopted an improved three-dimensional (3D) tomography method combining passive acoustic emission acquisition and active ultrasonic measurements. By varying individual parameters (i.e., prior model, sensor configuration, ray coverage, event distributions, and event location errors), 37 comparative tests were conducted. The quantitative impact of different factors was obtained. Synthetic experiments showed that the method could effectively adapt to complex structures. The optimal input parameters based on quantization results can significantly improve the detection reliability in abnormal regions.

Keywords： Detection of abnormal regions     Tomographic effects     Wave velocity     Ray path    

HTML PDF Collect

Title Author Date Type Operation

Review of compact computational spectral information acquisition systems

Hongya Song, Wenyi Zhang, Haifeng Li, Xu Liu, Xiang Hao,haox@zju.edu.cn

Journal Article

Emerging theories and technologies on computationalimaging

Xue-mei HU, Jia-min WU, Jin-li SUO, Qiong-hai DAI

Journal Article

Fingerprint Spectral Signatures Revealing the Spatiotemporal Dynamics of Bipolaris Spot Blotch Progression for Presymptomatic Diagnosis

Fengle Zhu, Zhenzhu Su, Alireza Sanaeifar, Anand Babu Perumal, Mostafa Gouda, Ruiqing Zhou, Xiaoli Li, Yong He

Journal Article

TRMM satellite onboard instruments and the application on precipitation analysis of their measurements

Fu Yunfei,Liu Qi,Wang Yu,Sun Liang,Li Rui,Ma Ming,Liu Guosheng

Journal Article

Phase problems in optical imaging

Guo-hai SITU, Hai-chao WANG

Journal Article

Analysis and research on extending lifespan technology of FY-3 microwave radiation imager

Liu Gaofeng,Chen Weiying,Weng Yihang,Yu Shuang and Wang Hua

Journal Article

Principles and applications of high-speed single-pixelimaging technology

Qiang GUO, Yu-xi WANG, Hong-wei CHEN, Ming-hua CHEN, Si-gang YANG, Shi-zhong XIE

Journal Article

High-resolution spectral video acquisition

Lin-sen CHEN, Tao YUE, Xun CAO, Zhan MA, David J. BRADY

Journal Article

Light field imaging for computer vision: a survey

Chen JIA, Fan SHI, Meng ZHAO, Shengyong CHEN

Journal Article

Ground-based Hyperspectral Stereoscopic Remote Sensing Network: A Promising Strategy to Learn Coordinated Control of O3 and PM2.5 over China

Cheng Liu, Chengzhi Xing, Qihou Hu, Qihua Li, Haoran Liu, Qianqian Hong, Wei Tan, Xiangguang Ji, Hua Lin, Chuan Lu, Jinan Lin, Hanyang Liu, Shaocong Wei, Jian Chen, Kunpeng Yang, Shuntian Wang, Ting Liu, Yujia Chen

Journal Article

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

Hao ZHU, Qing WANG, Jingyi YU

Journal Article

Evaluation of a typical plateau deep lake by DOM spectral characteristics

Tian Linfeng,Hu Jiwei,Li Cunxiong,Huang Xianfei,Xie Weifang

Journal Article

Current Situation and Trend of the Phosphors for Full Spectrum LED Lighting

Chen Xiaoxia, Zhang Xia, Liu Ronghui, Liu Yuanhong, Zhou Yipeng, Zhuang Weidong

Journal Article

Extended Hemispherical Lens and Its Applications in Millimeter Wave Focal Imaging Systems

Sun Zhongliang,Dou Wenbin

Journal Article

Quantitative Investigation of Tomographic Effects in Abnormal Regions of Complex Structures

Longjun Dong, Xiaojie Tong, Ju Ma

Journal Article