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CAS IR Grid
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地质与地球物理研究所 [2]
长春光学精密机械与物... [2]
金属研究所 [1]
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数学与系统科学研究院 [1]
自动化研究所 [1]
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OAI收割 [9]
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期刊论文 [6]
会议论文 [3]
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2021 [1]
2017 [1]
2016 [1]
2012 [1]
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学科主题
地理学::自然地理学 [1]
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A novel 2D/3D hierarchical registration framework via principal-directional Fourier transform operator
期刊论文
OAI收割
PHYSICS IN MEDICINE AND BIOLOGY, 2021, 卷号: 66, 期号: 6, 页码: 1-19
作者:
Yang KK(杨克克)
;
Luo Y(罗阳)
;
Zhao YW(赵忆文)
;
Su S(苏顺)
;
Qu DY(屈丹阳)
  |  
收藏
  |  
浏览/下载:42/0
  |  
提交时间:2021/04/13
2D/3D registration
Fourier transform operator
principal direction
registration framework
Unique Decomposition and a New Model for the Ground Moving Target Indication Problem
期刊论文
OAI收割
JOURNAL OF OPTIMIZATION THEORY AND APPLICATIONS, 2017, 卷号: 173, 期号: 1, 页码: 297-312
作者:
Li, Qingna
;
He, Li
;
Qi, Lijuan
;
Wang, Robert
  |  
收藏
  |  
浏览/下载:18/0
  |  
提交时间:2018/07/30
Ground moving target indication
Alternating direction method
Surveillance radar system
Robust principal component analysis
Mid-late Pleistocene glacial evolution in the Grove Mountains, East Antarctica, constraints from cosmogenic Be-10 surface exposure dating of glacial erratic cobbles
期刊论文
OAI收割
QUATERNARY SCIENCE REVIEWS, 2016, 卷号: 145, 期号: 0, 页码: 71-81
作者:
Dong, GC (Dong, Guocheng)
;
Huang, FX (Huang, Feixin)
;
Caffee, MW (Caffee, Marc W.)
;
Huang, FX
;
Yi, CL (Yi, Chaolu)
  |  
收藏
  |  
浏览/下载:26/0
  |  
提交时间:2017/09/26
Glacial HisTories From The East Antarctic Ice Sheet (Eais) Provide Keys To UnderstAndIng Correlations Between The Eats And Global Climate. They Are Especially Helpful In The Assessment Of Global Sea Level Change
And As a Means Of Quantifying The Magnitude Of pAst Glacial Activity And The RAte At Which Ice Responded To climAte Change. Given The Significance Of Eais Glacial hisTories
It Is Imperative That More Glacial Chronologic Data For thIs Region Be Obtained
Especially For The Mid-to-lAte Pleistocene. We Report Cosmogenic Be-10 Surface Exposure DAtIng Results From Glacially Transported Cobbles Embedded In Blue-ice moraIne MAterial At Mount hardIng
The Grove Mountains
Eais. Forty Exotic Cobbles Sampled AlOng Two PrOfiles (a And b) On This Blue-ice MoraIne Present Apparent Exposure-ages RangIng From 7.2 To 542.2 Ka. We Explore This Scattered Dataset By UsIng PrIncipal compOnent Analysis (Pca) To Identify Statistically Significant Trends In The Data. We Identify a correlatiOn betWeen Exposure-age And Distance Of The Cobbles From Mount hardIng. In prOfile a
Cobbles Further From Mount HardIng Yield Older Exposure-ages Than Those That Are Relatively Close. In Profile b
Cobbles Closer To Mount HardIng Are Found To Have Relatively Older Exposure-ages. In Term Of Glacial hisTory We Suggest That The Direction Of Ice Flow Changed durIng The Period From Similar To 60 To 200 Ka
And That Multiple Glacial Fluctuations Occurred In The Mid-late Pleistocene. (c) 2016 Elsevier Ltd. All Rights Reserved.
未知主应力方向残余应力的压痕应变法测量及其程序实现
会议论文
OAI收割
2012第八届中国北方焊接学术会议, 大连, 2012-07-27
刘生
;
陈怀宁
;
陈静
;
黄春玲
收藏
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浏览/下载:135/0
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提交时间:2013/08/21
residual stress
indentation strain - gage method
principal stress direction
Delphi program
Ridge extraction of a smooth 2-manifold surface based on vector field
期刊论文
OAI收割
COMPUTER AIDED GEOMETRIC DESIGN, 2011, 卷号: 28, 期号: 4, 页码: 215-232
作者:
Che, WuJun
;
Zhang, XiaoPeng
;
Zhang, Yi-Kuan
;
Paul, Jean-Claud
;
Xu, Bo
收藏
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浏览/下载:25/0
  |  
提交时间:2015/08/12
Implicit surface
Invariant feature
Line of curvature
Parametric surface
Principal curvature
Principal direction
Ridge
Umbilical point
Vector field
Crust-mantle coupling in North China: Preliminary analysis from seismic anisotropy
期刊论文
OAI收割
CHINESE SCIENCE BULLETIN, 2010, 卷号: 55, 期号: 31, 页码: 3599-3605
作者:
Gao Yuan
;
Wu Jing
;
Yi GuiXi
;
Shi YuTao
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收藏
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浏览/下载:11/0
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提交时间:2018/09/26
Seismic Anisotropy
Crust-mantle Coupling
Polarization Direction Of Fast Shear-wave
Shear-wave Splitting
Crustal Principal Compressive Stress
North China
Crust-mantle coupling in North China: Preliminary analysis from seismic anisotropy
期刊论文
OAI收割
CHINESE SCIENCE BULLETIN, 2010, 卷号: 55, 期号: 31, 页码: 3599-3605
作者:
Gao Yuan
;
Wu Jing
;
Yi GuiXi
;
Shi YuTao
  |  
收藏
  |  
浏览/下载:21/0
  |  
提交时间:2018/09/26
Seismic Anisotropy
Crust-mantle Coupling
Polarization Direction Of Fast Shear-wave
Shear-wave Splitting
Crustal Principal Compressive Stress
North China
Inspection focus technology of space tridimensional mapping camera based on astigmatic method (EI CONFERENCE)
会议论文
OAI收割
5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optoelectronic Materials and Devices for Detector, Imager, Display, and Energy Conversion Technology, April 26, 2010 - April 29, 2010, Dalian, China
作者:
Wang Z.
;
Wang Z.
;
Zhang L.
;
Zhang L.
收藏
  |  
浏览/下载:23/0
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提交时间:2013/03/25
The CCD plane of the space tridimensional mapping camera will be deviated from the focal plane(including the CCD plane deviated due to camera focal length changed)
under the condition of space environment and vibration
impact when satellite is launching
image resolution ratio will be descended because defocusing. For tridimensional mapping camera
principal point position and focal length variation of the camera affect positioning accuracy of ground target
conventional solution is under the condition of vacuum and focusing range
calibrate the position of CCD plane with code of photoelectric encoder
when the camera defocusing in orbit
the magnitude and direction of defocusing amount are obtained by photoelectric encoder
then the focusing mechanism driven by step motor to compensate defocusing amount of the CCD plane. For tridimensional mapping camera
under the condition of space environment and vibration
impact when satellite is launching
if the camera focal length changes
above focusing method has been meaningless. Thus
the measuring and focusing method was put forward based on astigmation
a quadrant detector was adopted to measure the astigmation caused by the deviation of the CCD plane
refer to calibrated relation between the CCD plane poison and the asrigmation
the deviation vector of the CCD plane can be obtained. This method includes all factors caused deviation of the CCD plane
experimental results show that the focusing resolution of mapping camera focusing mechanism based on astigmatic method can reach 0.25 m. 2010 Copyright SPIE - The International Society for Optical Engineering.
A new algorithm of image segmentation for overlapping grain image (EI CONFERENCE)
会议论文
OAI收割
ICO20: Optical Information Processing, August 21, 2005 - August 26, 2005, Changchun, China
作者:
Zhang X.
;
Zhang X.
;
Zhang X.
收藏
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浏览/下载:14/0
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提交时间:2013/03/25
Image segmentation is primary issue in image processing
at the same time it is principal problem in low level vision in computer vision field. It is the key technology to process image analysis
image comprehend and image depict successfully. Aim at measurement of granularity size of nonmetal grain
a new algorithm of image segmentation and parameters calculation for overlapping grain image is studied. The hypostasis of this algorithm is present some new attributes of graph sequence from discrete attribute of graph
consequently achieve that pick up the geometrical characteristics from input graph
and new graph sequence which in favor of image segmentation is recombined. The conception that image edge denoted with "twin-point" is put forward
base on geometrical characters of point
image edge is transformed into serial edge
and on recombined serial image edge
based on direction vector definition of line and some additional restricted conditions
the segmentation twin-points are searched with
thus image segmentation is accomplished. Serial image edge is transformed into twin-point pattern
to realize calculation of area and granularity size of nonmetal grain. The inkling and uncertainty on selection of structure element which base on mathematical morphology are avoided in this algorithm
and image segmentation and parameters calculation are realized without changing grain's self statistical characters.