中国科学院机构知识库网格系统: 检索

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

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收藏 | 浏览/下载：52/0 | 提交时间：2021/05/25

Soil-rock mixtures Strength reduction technique Numerical manifold method Digital image processing technology Slope stability analysis

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

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收藏 | 浏览/下载：26/0 | 提交时间：2021/05/25

Pre-existing flaw Digital image correlation method Full-field strain evolution Characteristic stress levels Discrete element method

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

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收藏 | 浏览/下载：70/0 | 提交时间：2022/01/18

ion irradiation miniaturized mechanical tests true stress-strain curve digital image correlation (DIC) inverse finite element method (iFEM) indentation size effect (ISE)

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

Residual stress Thermal barrier coatings (TBCs) Focused ion beam (FIB) Digital image correlation (DIC) Ring-core cutting method

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：24/0 | 提交时间：2014/02/13

residual stress mechanical release method hole drilling moire interferometry holography ESPI digital image correlation

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：26/0 | 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

This paper introduces a new imaging method for X-ray coherent scatter based on a new medical digital radiography device. An experimental equipment was set up and the scatter images obtained with it. The scatter images are made of some circles with the same center. With image processing the energy distribution curve extracted from coherent scatter images. The experiment results show that this method is reasonable and feasible. The study will have wide foreground of application. 2011 IEEE.

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.