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物理研究所 [4]
长春光学精密机械与物... [2]
遥感与数字地球研究所 [2]
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OAI收割 [8]
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会议论文 [4]
期刊论文 [4]
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Color videos' multichannel combination for bandwidth reduction and fast frequency domain processing (EI CONFERENCE)
会议论文
OAI收割
2nd International Workshop on Education Technology and Computer Science, ETCS 2010, March 6, 2010 - March 7, 2010, Wuhan, Hubei, China
作者:
Li S.
收藏
  |  
浏览/下载:18/0
  |  
提交时间:2013/03/25
The real color video consumes much transfer bandwidth and the resource of the hardware. A new approach is introduced to process the real color video images in real-time using color components combination to fit to the limited transmission bandwidth. The Y
U
V planes of video images are packed to construct a 2 dimensional complex array. Through the decomposition of frequency domain
the Y
U
V frequency can be got respectively by performing Fourier transform a time on the specific complex array. These frequencies can be filtered to generate the final filtered images. The experiment results show that the proposed algorithm is 3X speed compared to the traditional algorithm
and it reduces 1/3 bandwidth of video data stream. 2010 IEEE.
Developing image-contrast theory and analysis methods in high-resolution electron microscopy
期刊论文
OAI收割
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE, 2010, 卷号: 207, 期号: 12, 页码: 2639
Li, FH
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  |  
浏览/下载:36/0
  |  
提交时间:2013/09/17
INCOMMENSURATE MODULATED STRUCTURES
PHASE-OBJECT APPROXIMATION
EXIT-WAVE RECONSTRUCTION
CRYSTAL-STRUCTURES
ATOMIC CONFIGURATION
MISFIT DISLOCATIONS
LOMER DISLOCATION
FOCUS-VARIATION
FOURIER IMAGES
CORE STRUCTURE
Second-order Talbot effect with entangled photon pairs
期刊论文
OAI收割
PHYSICAL REVIEW A, 2009, 卷号: 80, 期号: 4
Luo, KH
;
Wen, JM
;
Chen, XH
;
Liu, Q
;
Xiao, M
;
Wu, LA
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  |  
浏览/下载:27/0
  |  
提交时间:2013/09/24
FOURIER IMAGES
LIGHT
DIFFRACTION
Multi-layer perceptron neural network based algorithm for simultaneous retrieving temperature and emissivity from hyperspectral FTIR dataset
会议论文
OAI收割
Igarss: 2007 Ieee International Geoscience and Remote Sensing Symposium, Vols 1-12: Sensing and Understanding Our Planet, New York
Cheng, Jie
;
Xiao, Qing
;
Li, Xiaowen
;
Liu, Qinhuo
;
Du, Yongming
;
Nie, Aixiu
收藏
  |  
浏览/下载:18/0
  |  
提交时间:2014/12/07
fourier Transform Infrared
soil
temperature
emissivity
neural
network
SEPARATION
IMAGES
Displacement estimation by the phase-shiftings of fourier transform in present white noise (EI CONFERENCE)
会议论文
OAI收割
ICO20: Optical Information Processing, August 21, 2005 - August 26, 2005, Changchun, China
作者:
Wu Y.-H.
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浏览/下载:28/0
  |  
提交时间:2013/03/25
Displacement estimation is a fundamental problem in Real-time video image processing. It can be typically approached by theories based on features in spatial domain. This paper presents an algorithm which improves the theory for estimating the moving object's displacement in spatial domain by its Fourier transform frequency spectrum. Because of the characters of Fourier transform
the result is based on all the features in the image. Utilizing shift theorem of Fourier transform and auto-registration
the algorithm employs the phase spectrum difference in polar coordinate of two frame images sequence with the moving target1
2. The method needn't transform frequency spectrum to spatial domain after calculation comparing with the traditional algorithm which has to search Direc peak
and it reduces processing time. Since the technique proposed uses all the image information
including all the white noise in the image especially
and it's hard to overcome the aliasing from noises
but the technique can be an effective way to analyze the result in little white noise by the different characters between high and low frequency bands. It can give the displacement of moving target within 1 pixel of accuracy. Experimental evidence of this performance is presented
and the mathematical reasons behind these characteristics are explained in depth. It is proved that the algorithm is fast and simple and can be used in image tracking and video image processing.
Crystal structure determination by maximum entropy image deconvolution in combination with image simulation
期刊论文
OAI收割
Electron Crystallography: Novel Approaches for Structure Determination of Nanosized Materials, 2006, 卷号: 211, 页码: 533
Wang, YM
;
Wang, HB
;
Li, FH
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浏览/下载:22/0
  |  
提交时间:2013/09/17
RESOLUTION ELECTRON-MICROSCOPY
FOURIER IMAGES
Maximum entropy image deconvolution applied to structure determination for crystal Nd1.85Ce0.15CuO4-delta
期刊论文
OAI收割
MICRON, 2005, 卷号: 36, 期号: 5, 页码: 393
Wang, YM
;
Wang, HB
;
Li, FH
;
Jia, LS
;
Chen, XL
收藏
  |  
浏览/下载:22/0
  |  
提交时间:2013/09/18
RESOLUTION ELECTRON-MICROSCOPY
EXIT WAVE RECONSTRUCTION
SINGLE-CRYSTALS
FOURIER IMAGES
ND2CUO4
GROWTH
HREM
Analyzing vegetation cover variation cycle of China from NOAA data
会议论文
OAI收割
Proceedings of the China Association for Science and Technology, Vol 1, No 2, Beijing
Wang, D
;
Jiang, XG
收藏
  |  
浏览/下载:17/0
  |  
提交时间:2014/12/07
time series images
NDVI Fourier component
vegetation cover cycle
TIME-SERIES