中国科学院机构知识库网格系统: 检索

Stress intensity factor evolution considering fracture process zone development of granite under monotonic and stepwise cyclic loading 期刊论文 OAI收割
ENGINEERING FRACTURE MECHANICS, 2022, 卷号: 273, 期号: -, 页码: -
作者: Miao, Shuting; Pan, Peng-Zhi; Hou, Wenbo; He, Benguo; Yu, Peiyang

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收藏 | 浏览/下载：16/0 | 提交时间：2023/08/02

Cyclic loading Stress intensity factor Fracture process zone J-integral Digital image correlation Acoustic emission

Image deformation based on contour using moving integral least squares 期刊论文 OAI收割
IET IMAGE PROCESSING, 2019, 卷号: 13, 期号: 1, 页码: 152-160
作者: Yu, Chong; Chen, Xi; Yin, Lei; Shu, Chang; Zhao, Li

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收藏 | 浏览/下载：87/0 | 提交时间：2019/07/12

deformation least squares approximations optimisation image registration splines (mathematics) computational geometry feature extraction medical image processing deformation function effective image deformation methods contour image deformation method Integral Least Squares optimisation control contours desired contours intuitive deformations

The infrared imaging spectrograph (IRIS) for TMT: design of image slicer 会议论文 OAI收割
SPIE Ground-based and Airborne Instrumentation for Astronomy VII（Vol.10702）, Austin, Texas, United States, 2018-6-10
作者: Kai Zhang; Yifei Zhou; Yongtian Zhu; Zhongwen hu

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收藏 | 浏览/下载：53/0 | 提交时间：2019/02/12

Thirty Meter Telescope Infrared Imaging Spectrograph Integral Field Unit Image Slicer

Laboratory prototype of Image Slicer Integral Field Unit for 1m Telescope 会议论文 OAI收割
Xiamen, China, 2012-4-26
作者: Zhongwen Hu; Hangxin Ji; Lei Wang; Yonghui Hou

收藏 | 浏览/下载：41/0 | 提交时间：2014/01/10

Integral Field Spectroscopy Spectrograph Image slicer Prototype

自适应信号与图像分解及其应用 学位论文 OAI收割
工学博士, 中国科学院自动化研究所: 中国科学院研究生院, 2011
作者: 胡晰远

收藏 | 浏览/下载：114/0 | 提交时间：2015/09/02

经验模态分解模式混叠基于算子的方法积分算子图像分解图像压缩 Empirical mode decomposition mode mixing operator-based approach integral operators image decomposition image compression

Geocentric distance's errors' correction of space cameras based on USGS DEM (EI CONFERENCE) 会议论文 OAI收割
2011 IEEE 3rd International Conference on Communication Software and Networks, ICCSN 2011, May 27, 2011 - May 29, 2011, Xi'an, China
作者: Li W.; Li W.; Xu S.

收藏 | 浏览/下载：23/0 | 提交时间：2013/03/25

In order to correct the geocentric distance's error of TDI (Time Delay and Integration) CCD space camera in calculation of image motion compensation the data source of the earth's height above sea level USGS DEM (United States Geological Survey Digital Elevation Model) has been introduced to make digital elevation map the match error of the forward direction (the integral direction of TDI CCD) has been greatly decreased by correcting the geocentric distance error and eliminate the influence to the relative error of image motion velocity and correct the error generated by the different heights above sea level. After correcting which greatly improves the imaging quality of TDI CCD space camera. 2011 IEEE. a model of image motion calculation of nadir has been introduced the calculation and analysis of the model shows that: the maximum error of image motion velocity about 1.72% has been decreased to 0.06% and the influence of the geocentric distance error to the relative error of image motion velocity has been analyzed with the model

Efficient normalized cross correlation calculation method for stereo vision based robot navigation 期刊论文 OAI收割
FRONTIERS OF COMPUTER SCIENCE IN CHINA, 2011, 卷号: 5, 期号: 2, 页码: 227-235
作者: Shen, YH (沈晔湖); Shen, YH (沈晔湖)

收藏 | 浏览/下载：13/0 | 提交时间：2012/08/24

normalized cross correlation (NCC) stereo matching integral image

Earth elevation map production and high resolution sensing camera imaging analysis (EI CONFERENCE) 会议论文 OAI收割
Optoelectronic Imaging and Multimedia Technology, October 18, 2010 - October 20, 2010, Beijing, China
作者: Dai L.

收藏 | 浏览/下载：129/0 | 提交时间：2013/03/25

The Earth's digital elevation which impacts space camera imaging has prepared and imaging has analysed. Based on matching error that TDI CCD integral series request of the speed of image motion statistical experimental methods-Monte Carlo method is used to calculate the distribution histogram of Earth's elevation in image motion compensated model which includes satellite attitude changes orbital angular rate changes latitude longitude and the orbital inclination changes. And then elevation information of the earth's surface from SRTM is read. Earth elevation map which produced for aerospace electronic cameras is compressed and spliced. It can get elevation data from flash according to the shooting point of latitude and longitude. If elevation data between two data the ways of searching data uses linear interpolation. Linear interpolation can better meet the rugged mountains and hills changing requests. At last the deviant framework and camera controller are used to test the character of deviant angle errors TDI CCD camera simulation system with the material point corresponding to imaging point model is used to analyze the imaging's MTF and mutual correlation similarity measure simulation system use adding cumulation which TDI CCD imaging exceeded the corresponding pixel horizontal and vertical offset to simulate camera imaging when stability of satellite attitude changes. This process is practicality. It can effectively control the camera memory space and meet a very good precision TDI CCD camera in the request matches the speed of image motion and imaging. 2010 SPIE.

Multi-channel high-speed TDICCD image data acquisition and storage system (EI CONFERENCE) 会议论文 OAI收割
2010 International Conference on E-Product E-Service and E-Entertainment, ICEEE2010, November 7, 2010 - November 9, 2010, Henan, China
作者: Li Y.; Li Y.; Li Y.; Li Y.

收藏 | 浏览/下载：26/0 | 提交时间：2013/03/25

For multi-channel high-speed image data of certain space remote sensing camera this paper proposed a new image data acquisition and storage system. First of all the system uses Field-Programmable Gate Array(FPGA) controlling synchronous dynamic random access memory(SDRAM) array to realize the cache of image data then according to the received commands sends certain channel's image data to the acquisition card to write the image data into SCSI hard disk and implements the final storage. A Time Delay Integral Charge Couple Device(TDICCD) image data acquisition and storage system with five channels is developed pixel clock rate is up to 96MHz total effective data rate is up to 2.88Gb/s single channel storage depth is up to 7810 lines. The experimental results indicate that this system work stably high effectively which can meet the requirement of acquisition and storage of multi-channel high-speed TDICCD image data. 2010 IEEE.

Remote sensing of ocean waves by along-track interferometric synthetic aperture radar 期刊论文 OAI收割
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS, 2009, 卷号: 114, 页码: C10015
作者: Zhang, Biao; Perrie, Will; He, Yijun; Zhang, BA, Fisheries & Oceans Canada, Bedford Inst Oceanog, 1 Challenger Dr,POB 1035, Dartmouth, NS B2Y 4A2, Canada

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收藏 | 浏览/下载：85/0 | 提交时间：2010/11/18

Nonlinear Integral Transform Modulation Transfer-function Image Spectrum Surface-waves Simulation Inversion Algorithm Currents Sea