机构

• 长春光学精密机械与物... [5]
• 西安光学精密机械研究... [3]
• 物理研究所 [1]
• 高能物理研究所 [1]
• 自动化研究所 [1]

采集方式

• OAI收割 [11]

内容类型

• 期刊论文 [6]
• 会议论文 [5]

发表日期

• 2023 [1]
• 2021 [1]
• 2019 [1]
• 2015 [1]
• 2014 [1]
• 2012 [2]
• 更多

学科主题

• Physics [1]

筛选

浏览/检索结果: 共11条，第1-10条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序提交时间升序提交时间降序作者升序作者降序发表日期升序发表日期降序 Ultrafast two-dimensional x-ray imager with temporal fiducial pulses for laser-produced plasmas 期刊论文  OAI收割 CHINESE PHYSICS B, 2023, 卷号: 32, 期号: 11 作者:  Liu, Zheng-Dong;  Zhong, Jia-Yong;  Yuan, Xiao-Hui;  Zhang, Ya-Peng;  Yao, Jia-Wen   |  收藏  |  浏览/下载：33/0  |  提交时间：2023/11/20 ultrafast diagnosis  double-cone ignition  x-ray streak camera  pinhole array  temporal fiducial pulses  07.85.-m  29.90.+r  28.41.Rc  28.52.Cx   A sealed X-ray microchannel plate imager with CsI photocathode to improve quantitative precision of framing camera 期刊论文  OAI收割 Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2021, 卷号: 1005 作者:  Yang, Yang;  Zhu, Bingli;  Gou, Yongsheng;  Chen, Zhen;  Bai, Xiaohong   |  收藏  |  浏览/下载：48/0  |  提交时间：2021/05/26 Framing camera  X-ray detector  Ultra-fast diagnostics  Fusion diagnosis  Micro-channel plate (MCP)  CsI photocathode   Spatial non-local attention for thoracic disease diagnosis and visualisation in weakly supervised learning 期刊论文  OAI收割 IET IMAGE PROCESSING, 2019, 卷号: 13, 期号: 11, 页码: 1922-1930 作者:  Yang, Menglin;  Li, Ding;  Zhang, Wensheng   |  收藏  |  浏览/下载：67/0  |  提交时间：2019/12/16 feature extraction  diseases  medical image processing  patient diagnosis  image segmentation  image classification  supervised learning  image annotation  thoracic disease diagnosis  weakly supervised learning  computer-aided diagnosis  coarse image-level annotations  pathological area  nonlocal aware features  fine-grained expertise  clinical diagnosis  visualisation method  chest X-ray dataset  spatial nonlocal attention mechanism  ResNet-SNA   Qusia-random rectangular holes self-supporting transmission grating 期刊论文  OAI收割 ACTA PHYSICA SINICA, 2015, 卷号: 64, 期号: 7, 页码: 74201 作者:  Liu, YW;  Zhang, WH;  Zhang, JC;  Fan, QP;  Wei, L 收藏  |  浏览/下载：44/0  |  提交时间：2016/04/18 transmission grating  soft X-ray  laser-plasma diagnosis  inertial confinement fusion   Ray tracing method for the grazing incidence flat-field imaging soft X-ray spectrometer 期刊论文  OAI收割 CHINESE PHYSICS B, 2014, 卷号: 23, 期号: 6 Dong, QL; Liu, YQ; Teng, H; Li, YJ; Zhang, J 收藏  |  浏览/下载：26/0  |  提交时间：2015/04/14 flat-field grating spectrometer  soft X-ray diagnosis   Application of adaptive enhancement means in head and neck CR image (EI CONFERENCE) 会议论文  OAI收割 2012 3rd International Conference on Information Technology for Manufacturing Systems, ITMS 2012, September 8, 2012 - September 9, 2012, Qingdao, China Zhang M.-H.; Zhang Y.-Y. 收藏  |  浏览/下载：35/0  |  提交时间：2013/03/25 Digital CR of head and neck overcomes the disadvantage of regular X-ray radiography  which can not reveal bone and soft tissue position deficiency in one exposing  and reduces the Xray radiation dose. Meanwhile  various factors cause the decline of image quality  and images must be enhanced in order to meet demands of doctor's clinical diagnosis. The general enhancement algorithms don't consider body's structure differences and density characteristics. A new adaptive CR enhancement algorithm was proposed in this article  and head and neck CR images were processed with this method and compared with linear unsharp masking method. The experiment proves that the details of CR image enhanced were abundant and enhanced CR image had good visual effect  SNR was high  as well as detail variance /background variance (DV/BV) indicating that this algorithm is suitable for head and neck CR medical images. (2012) Trans Tech Publications  Switzerland.   The research of digltal CR medicine image adapitive enhancement method (EI CONFERENCE) 会议论文  OAI收割 4th International Conference on Mechanical and Electrical Technology, ICMET 2012, July 24, 2012 - July 26, 2012, Kuala Lumpur, Malaysia Ming-Hui Z.; Yao-Yu Z. 收藏  |  浏览/下载：62/0  |  提交时间：2013/03/25 Digital CR medicine radiation image is in doctor's favor and has became medicine imaging technology new hot spot because of its high gray contrast  powerful computer disposal function  little radiation dosage  non-film diagnosis  different area consultation. But degradation of digital X-ray medical image such as low contrast and blurring during radiographic imaging  caused by complexity of body tissue and effects of X-ray scattering and electrical noise etc.  can worsen the results of analysis and diagnosis. So it is usually needed that CR medicine image is enhanced to improve its vision quality  and easy to doctor's more accurate diagnosis. The general enhancement algorithms over enhancing the contrast and lose image details  aiming at the defects  an enhancement algorithm for CR image is proposed based on the ratio of deviation to mean of domain. The arithmetic enhance CR image edge details by adjusting factor K based on the ratio of deviation to mean of domain of CR image. Experiment results demonstrate that the algorithm enhances CR image detail and CR image enhanced has good visual effect  the adaptive enhancement method is fit for CR medicine image. (2012) Trans Tech Publications  Switzerland.   A Prototype X-ray Framing Camera With Variable Exposure Time Based on Double-Gated Micro-Channel Plates 期刊论文  OAI收割 ieee transactions on nuclear science, 2009, 卷号: 56, 期号: 4, 页码: 2487-2492 作者:  Yang, Wenzheng;  Hou, Xun;  Bai, Yonglin;  Bai, Xiaohong;  Liu, Baiyu 收藏  |  浏览/下载：83/22  |  提交时间：2010/07/22 High speed imaging  microchannel plate (MCP)  multi-framing camera  x-ray diagnosis   Research and analysis of non-coaxial x-ray microscopy working at grazing incidence (EI CONFERENCE) 会议论文  OAI收割 Australian Conference on Optical Fibre Technology/Australian Optical Society, ACOFT/AOS 2006, July 10, 2006 - July 13, 2006, Melbourne, VIC, Australia Jiasheng H.; Yuhong B. 收藏  |  浏览/下载：14/0  |  提交时间：2013/03/25 We have designed and fabricated a non-coaxial grazing reflective x-ray microscope that is composed of four spherical mirrors for the diagnosis of intertial confinement fusion. The aberrations and imaging quality of the system are analysis and calculated.   A new method of image reconstruction with high resolution in X-ray coded aperture imaging (EI CONFERENCE) 会议论文  OAI收割 Laser-Generated, Synchrotron, and Other Laboratory X-Ray and EUV Sources, Optics, and Applications II, August 2, 2005 - August 4, 2005, San Diego, CA, United states 作者:  Sun Y.;  Sun Y. 收藏  |  浏览/下载：22/0  |  提交时间：2013/03/25 In the processing diagnosis of the inertia confinement fusion (ICF)  the ring coded aperture imaging technique is applied in order to gain high space and time resolutions simultaneously. The key of acquiring high spatial resolution is how to obtain a point spread function of an imaging system. The common method is the firsthand projection method which is an approximate one. The x-ray diffraction effect is neglected in the method  so the resolution of reconstructed image is decreased. We have derived the point spread function (PSF) of the ring coded aperture from scalar diffraction theory. And the Wiener filter is fabricated on the basis of the PSF. In National Key Laboratory of Laser Fusion  at China Academy of Engineering Physics  the imaging experiment on the diagnosis of ICF is completed using the ring coded aperture plate with inner diameter d1 = 250m and outer diameter d2 = 260m . The obtained coded image is processed by the Wiener filter which diffractive effect is considered. The processed results have shown that resolution and modulation contrast of acquired image are evidently better than the results obtained by the firsthand projection method.