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Chinese Academy of Sciences Institutional Repositories Grid
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Monitoring prediction of a rockslide in an open-pit mine and numerical analysis using a material instability criterion 期刊论文  OAI收割
BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT, 2019, 卷号: 78, 期号: 3, 页码: 2041-2053
作者:  
Li Zhaohua;  Jiang Yuanjun;  Tao Zhigang;  He Manchao
  |  收藏  |  浏览/下载:52/0  |  提交时间:2019/04/30
Monitoring prediction of a rockslide in an open-pit mine and numerical analysis using a material instability criterion 期刊论文  OAI收割
BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT, 2019, 卷号: 78, 期号: 3, 页码: 2041-2053
作者:  
Li Zhaohua;  Jiang Yuanjun;  Tao Zhigang;  He Manchao;  Jiang, Yuanjun
  |  收藏  |  浏览/下载:47/0  |  提交时间:2019/04/30
Modelling a real rockslide as a static-dynamic transition using a material instability criterion 期刊论文  OAI收割
INDIAN JOURNAL OF GEO-MARINE SCIENCES, 2019, 卷号: 48, 期号: 5, 页码: 747-757
作者:  
Li, ZH;  Jiang, YJ;  Tao, ZG;  He, MC
  |  收藏  |  浏览/下载:27/0  |  提交时间:2020/02/28
Real-time matching algorithm of navigation image based on corner detection (EI CONFERENCE) 会议论文  OAI收割
International Symposium on Photoelectronic Detection and Imaging 2009: Advances in Imaging Detectors and Applications, June 17, 2009 - June 19, 2009, Beijing, China
作者:  
Zhang T.
收藏  |  浏览/下载:46/0  |  提交时间:2013/03/25
In order to meet requirement of real-time and high accuracy in image matching aided navigation  SSDA algorithm is used to match remote sensing image and template image coarsely  a fast and effective algorithm of remote sensing image matching based on corner detection is put forward. With the combination of rough and fine match  when the matching result is bigger than one to count absolute value sum of energy difference of characteristic point energy to realize fine match of remote sensing image and template image to locate the position of template image in remote sensing image accurately. Simulation experiment proves that the matching of a remote sensing image resolution of 1018*1530 and a template image resolution of 150*90 can be fulfilled within 2.392 second  wavelet transform is used to acquire low frequency component to realize image compression to decrease calculation work and increase matching speed. Harris corner detection algorithm is used to detect corner of remote sensing image and template image and energy of every corner is calculated  the algorithm is robust and effective  real time image navigation can be achieved. 2009 SPIE.  
Data preprocessing of the exterior field of vision assembling photogrammetric camera (EI CONFERENCE) 会议论文  OAI收割
3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, July 8, 2007 - July 12, 2007, Chengdu, China
作者:  
Li J.;  Li J.;  Li J.;  Liu J.;  Liu J.
收藏  |  浏览/下载:81/0  |  提交时间:2013/03/25
Transmit array photogrammetric camera can obtain image which is high geometric fidelity and high photogrammetric quality. However  the single chip array CCD image sensor camera can't meet the need of measuring precision and photogrammetric covering area. In order to obtain large numbers of information and extensive photogrammetric covering area  we must increase field of vision angle and improve photogrammetric covering area. And all these objects can be realized by exterior field of vision assembling photogrammetric camera. Two side work must be done before images  which obtained by exterior field of vision assembling photogrammetric camera  be used in photogrammetry. First  all assembling camera focal plane need be converted to a benchmark coordinate focal plane to realize camera digital assembling. Second  images must be re-sampled and processing. Because of coordinate conversion  two images from different assembling cameras can be established function relation  which a pixel of image from a camera is corresponding to a pixel of another image from different camera. But through this conversion  some pixels maybe extrusion together and other pixels separate on an image area. So interpolation direction finding(IDF) is used to obtain these pixels and realize image re-sampling. In this paper  the structure of exterior field of vision assembling photogrammetric camera is analyzed  and the coordinate conversion method of exterior field of vision assembling photogrammetric camera and image gray re-sampling method also can be discussed. All the works are based to data pretreatment of exterior vision assembling photogrammetric camera.