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Chinese Academy of Sciences Institutional Repositories Grid
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Modelling the stability of a soil-rock-mixture slope based on the digital image technology and strength reduction numerical manifold method 期刊论文  OAI收割
ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS, 2021, 卷号: 126, 页码: 45-54
作者:  
Yang, Yongtao;  Chen, Tao;  Wu, Wenan;  Zheng, Hong
  |  收藏  |  浏览/下载:52/0  |  提交时间:2021/05/25
Full-field strain evolution and characteristic stress levels of rocks containing a single pre-existing flaw under uniaxial compression 期刊论文  OAI收割
BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT, 2020, 卷号: 79, 期号: 6, 页码: 3145-3161
作者:  
Liu, Liwang;  Li, Haibo;  Li, Xiaofeng;  Wu, Renjie
  |  收藏  |  浏览/下载:26/0  |  提交时间:2021/05/25
True stress-strain curve extraction from ion-irradiated materials via small tensile, small punch and nanoindentation tests: method development and accuracy/consistency verification 期刊论文  OAI收割
NUCLEAR FUSION, 2020, 卷号: 60, 期号: 5, 页码: 14
作者:  
Liu, Haiting;  Ma, Jiawei;  Tang, Ao;  Tang, Jingzhao;  Zhang, Chonghong
  |  收藏  |  浏览/下载:70/0  |  提交时间:2022/01/18
Interfacial Residual Stress Analysis of Thermal Spray Coatings by Miniature Ring-Core Cutting Combined with DIC Method 期刊论文  OAI收割
EXPERIMENTAL MECHANICS, 2014, 卷号: 54, 期号: 2, 页码: 127
Zhu, JG; Xie, HM; Li, YJ; Hu, ZX; Luo, Q; Gu, CZ
收藏  |  浏览/下载:23/0  |  提交时间:2015/04/14
Recent progress in residual stress measurement techniques 期刊论文  OAI收割
Acta Mechanica Solida Sinica, 2013, 卷号: 26, 期号: 6, 页码: 570-583
作者:  
Huang XF(黄先富);  Liu ZW;  Xie HM;  Liu Zhanwei
收藏  |  浏览/下载:23/0  |  提交时间:2014/02/13
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:38/0  |  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:67/0  |  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.  
Study on supper resolution reconstruction based on staggered arrays (EI CONFERENCE) 会议论文  OAI收割
2011 International Conference on Electronic and Mechanical Engineering and Information Technology, EMEIT 2011, August 12, 2011 - August 14, 2011, Harbin, China
Yuan Z.; Xing Z.; Guang J.
收藏  |  浏览/下载:24/0  |  提交时间:2013/03/25
The image resolution can be improved without increasing the requirement to optical imaging systems' parameters and decreasing the size of CCD pixel by staggered arrays technology  which arranges several CCDs in a specific mode. In this paper  an image super resolution method of improving the image resolution for 1.5 times both in two directions by 4 linear arrays staggered based on this technology is presented  which avoids the large computation in a single time by use of circulation method. This method is proved effective by the digital simulation  and a simulated experiment platform is constructed to test its feasibility. The image resolution is improved for 1.42 times of the unreconstructed image according to the imaging experiment of resolution chart  which is closed to 1.5 times in ideal case. And also  the reconstructed and unreconstructed images are evaluated by the image information entropy  which proves that the reconstructed image contains more information. 2011 IEEE.  
Experiment of coherent scatter imaging based digital radiography device (EI CONFERENCE) 会议论文  OAI收割
2011 IEEE International Conference on Computer Science and Automation Engineering, CSAE 2011, June 10, 2011 - June 12, 2011, Shanghai, China
作者:  
Li B.;  Wang K.;  Liu J.;  Liu J.;  Liu J.
收藏  |  浏览/下载:22/0  |  提交时间:2013/03/25
High precision test method for dynamic imaging of space camera (EI CONFERENCE) 会议论文  OAI收割
2010 IEEE International Conference on Advanced Computer Control, ICACC 2010, March 27, 2010 - March 29, 2010, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States
作者:  
Jin L.-X.;  Zhang K.;  Zhang K.;  Zhang K.;  Zhang K.
收藏  |  浏览/下载:29/0  |  提交时间:2013/03/25
A test method for dynamic imaging of space TDICCD (Time Delay and Integration Charge Coupled Devices) camera was presented in this paper. The test method adopted the PLL (Phase Locked Loop) technology and CMAC (Cerebella Model Articulation Controller) friction compensation as control strategy. Furthermore  According to this method  a test system for dynamic imaging of space TDICCD camera was designed and implemented. The system simulated the movement of the ground objects relative to the space aerocraft  to validate the capability of image speed match and the dynamic imaging quality of TDICCD camera. The design adopted a precision turntable and a drift turntable to simulate the movement around the earth and the drift motion in different latitude due to the rotation of earth  of the aerocraft. The turntables were drived by permanent magnet torque motor which was powered by PWM (Pulse Width Modulation). The system adopted DSP (Digital Signal Processor) as the control core and reached a very high performance. The experimental results showed that the steady speed error was better than 0.01 % and the instantaneous speed error reached 0.0267%. The precision of the test system designed met the requirement for dynamic imaging of TDICCD camera. 2010 IEEE.