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Chinese Academy of Sciences Institutional Repositories Grid
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CAS IR Grid
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物理研究所 [2]
计算技术研究所 [1]
长春光学精密机械与物... [1]
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OAI收割 [4]
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期刊论文 [3]
会议论文 [1]
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2020 [1]
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2000 [1]
1999 [1]
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A Spatial-Temporal Positioning Algorithm Using Residual Network and LSTM
期刊论文
OAI收割
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT, 2020, 卷号: 69, 期号: 11, 页码: 9251-9261
作者:
Wang, Rongrong
;
Luo, Haiyong
;
Wang, Qu
;
Li, Zhaohui
;
Zhao, Fang
  |  
收藏
  |  
浏览/下载:52/0
  |  
提交时间:2020/12/10
Wireless fidelity
Feature extraction
Fingerprint recognition
Residual neural networks
Deep learning
Robustness
Degradation
Convolutional neural network (CNN)
indoor positioning
long short-term memory (LSTM)
residual network
spatial-temporal
A new spaceborne compression approach for remote sensing imagery (EI CONFERENCE)
会议论文
OAI收割
ICO20: Remote Sensing and Infrared Devices and Systems, August 21, 2005 - August 26, 2005, Changchun, China
作者:
Xu S.
收藏
  |  
浏览/下载:27/0
  |  
提交时间:2013/03/25
After analyzing advantages and disadvantages of these typical encoding methods: SPIHT and VQ
a "DWT+MRLE" approach for spaceborne data compression was proposed in this paper. This approach includes two steps: Discrete Wavelet Transform (DWT) and Modified Run Length Encoding (MRLE). The former used CDF9/7 biorthogonal wavelet filters to powerfully get rid of correlation between pixels in imagery. The later put enlightening information into the lowest bit of some key-position transform coefficients. Consequently
CDF9/7 and MRLE together make hardware platform remain high real-time capability
and help reconstructed images keep good fidelity with PSNR being about 40dB
compared with the original ones. Comparison between experimentations on SPOT4's low-spatial-resolution (10m) imagery and Ikonos2's high-spatial-resolution (1m) imagery
shows this "DWT+MRLE" method having better performance for remote-sensed imagery
especially those of higher resolution. Although inferior to 8:1
Compression Ration (CR) here near 5:1 is greater than France SPOT5's 3:1 and American Ikonos2's 11:2.6 on-board data compression. More important
this method having less computational amount is good for spaceborne capability of real time. The consumed time of different image size is also presented in this paper
based on TI TMSC6416 DSP chip with 600MHz CPU cycle clock.
Phase conjugator with two coherent beams in a BaTiO3 : Ce crystal
期刊论文
OAI收割
SCIENCE IN CHINA SERIES A-MATHEMATICS PHYSICS ASTRONOMY, 2000, 卷号: 43, 期号: 7, 页码: 743
Wu, JL
;
Xie, P
;
Dai, JH
;
Zhang, HJ
收藏
  |  
浏览/下载:24/0
  |  
提交时间:2013/09/24
PHOTOREFRACTIVE CRYSTALS
INTERNAL-REFLECTION
SPATIAL FIDELITY
CONFIGURATION
MIRROR
Frequency shifts and dynamic instabilities in photorefractive self-pumped and mutually pumped phase conjugation
期刊论文
OAI收割
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS, 1999, 卷号: 16, 期号: 3, 页码: 420
Xie, P
;
Wang, PY
;
Dai, JH
;
Zhang, HJ
收藏
  |  
浏览/下载:21/0
  |  
提交时间:2013/09/17
IRREGULAR FLUCTUATIONS
INTERNAL-REFLECTION
SPATIAL FIDELITY
BARIUM-TITANATE
OPTICAL CHAOS
DYE-LASER
BATIO3
MIRROR
CRYSTALS
OSCILLATIONS