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金属研究所 [3]
长春光学精密机械与物... [2]
自动化研究所 [2]
数学与系统科学研究院 [1]
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OAI收割 [8]
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期刊论文 [4]
会议论文 [2]
学位论文 [2]
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2009 [1]
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Image registration based on Mexican-hat wavelets and pseudo-Zernike moments (EI CONFERENCE)
会议论文
OAI收割
2012 World Automation Congress, WAC 2012, June 24, 2012 - June 28, 2012, Puerto Vallarta, Mexico
作者:
Liu Y.
;
Liu Y.
;
Liu Y.
收藏
  |  
浏览/下载:37/0
  |  
提交时间:2013/03/25
Image registration is a key technique in pattern recognition and image processing
and it is widely used in many application areas such as computer vision
remote sensing
image fusion and object tracking. A method for image registration combining Mexican-hat wavelets and pseudo-Zernike moments is proposed. Firstly
feature points are extracted using scale-interaction Mexican-hat wavelets in the reference image and sensed image respectively. Then
pseudo-Zernike moments are used to match them and classical RANSAC used to eliminate the wrong matches. And then
the well match points are used to estimate the best affine transform parameters by least squares minimization. At last
the sensed image is transformed and resampled to accomplish the image registration. The experiments indicate that the proposed algorithm extracts feature points and matches them exactly and eliminates wrong matched points effectively and achieves nice registration results. 2012 TSI Press.
Storage and compression design of high speed CCD (EI CONFERENCE)
会议论文
OAI收割
4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, November 19, 2008 - November 21, 2008, Chengdu, China
Cai X.
;
Zhai L. P.
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  |  
浏览/下载:58/0
  |  
提交时间:2013/03/25
In current field of CCD measurement
large area and high resolution CCD is used to obtain big measurement image
so that
speed and capacity of CCD requires high performance of later storage and process system. The paper discusses how to use SCSI hard disk to construct storage system and use DSPs and FPGA to realize image compression. As for storage subsystem
Because CCD is divided into multiplex output
SCSI array is used in RAID0 way. The storage system is composed of high speed buffer
DMA controller
control MCU
SCSI protocol controller and SCSI hard disk. As for compression subsystem
according to requirement of communication and monitor system
the output is fixed resolution image and analog PAL signal. The compression means is JPEG2000 standard
in which
9/7 wavelets in lifting format is used. 2 DSPs and FPGA are used to compose parallel compression system. The system is composed of FPGA pre-processing module
DSP compression module
video decoder module
data buffer module and communication module. Firstly
discrete wavelet transform and quantization is realized in FPGA. Secondly
entropy coding and stream adaption is realized in DSPs. Last
analog PAL signal is output by Video decoder. Data buffer is realized in synchronous dual-port RAM and state of subsystem is transfer to controller. Through subjective and objective evaluation
the storage and compression system satisfies the requirement of system. 2009 SPIE.
Electrochemical noise study on 2024-T3 Aluminum alloy corrosion in simulated acid rain under cyclic wet-dry condition
期刊论文
OAI收割
Electrochimica Acta, 2006, 卷号: 51, 期号: 23, 页码: 4977-4986
Y. Y. Shi
;
Z. Zhang
;
J. X. Su
;
F. H. Cao
;
J. Q. Zhang
收藏
  |  
浏览/下载:24/0
  |  
提交时间:2012/04/14
2024-T3 Aluminum alloy
atmospheric corrosion
wet-dry cycle
simulated
acid rain
electrochemical noise (EN)
pitting corrosion
electrolyte layer
wavelets
behavior
transform
impedance
steel
iron
In-situ monitoring of nickel electrodeposit structure using electrochemical noise technique
期刊论文
OAI收割
Transactions of Nonferrous Metals Society of China, 2006, 卷号: 16, 期号: 1, 页码: 209-216
Z. N. Yang
;
Z. Zhang
;
W. H. Leng
;
K. Ling
;
J. Q. Zhang
收藏
  |  
浏览/下载:29/0
  |  
提交时间:2012/04/14
nickel electroplating
electrochemical noise
electrodeposit structure
nucleation
growth
silver
crystallization
transform
wavelets
aluminum
behavior
metals
Study of the zinc electroplating process using electrochemical noise technique
期刊论文
OAI收割
Journal of Electroanalytical Chemistry, 2005, 卷号: 578, 期号: 2, 页码: 357-367
Z. Zhang
;
W. H. Leng
;
Q. Y. Cai
;
F. H. Cao
;
J. Q. Zhang
收藏
  |  
浏览/下载:18/0
  |  
提交时间:2012/04/14
zinc electroplating
electrochemical noise
electrodeposit structure
glassy-carbon
layered nanostructures
copper/cuprous oxide
wavelets
transform
electrodeposition
nucleation
electrocrystallization
crystallization
behavior
silver
Wavelet modeling and forecasting and its application in the Chinese monetary multiplier
期刊论文
OAI收割
APPLIED MATHEMATICS AND MECHANICS-ENGLISH EDITION, 1999, 卷号: 20, 期号: 8, 页码: 917-923
作者:
Liu, B
;
Dong, QX
  |  
收藏
  |  
浏览/下载:15/0
  |  
提交时间:2018/07/30
wavelets transform
time-varying AR model
monetary multiplier
复变换域可视化与语音信号小波全息谱研究
学位论文
OAI收割
工学博士, 中国科学院自动化研究所: 中国科学院自动化研究所, 1998
作者:
郑义
收藏
  |  
浏览/下载:46/0
  |  
提交时间:2015/09/02
复变换域
可视化
伪彩色编码
全息声谱
小波变换
相位谱
幅度谱
语音处理
图象处理
z变换
傅里叶变换
Complex transform domain
visualization
pseudo-color encoding
holo-spectrogram
wavelets transform
phase spectrogram
magnitude spe
基于码激励线性预测(CELP)的宽带语音编码研究
学位论文
OAI收割
工学博士, 中国科学院自动化研究所: 中国科学院自动化研究所, 1998
作者:
姚力
收藏
  |  
浏览/下载:117/0
  |  
提交时间:2015/09/02
宽带语音编码
小波变换
线性预测(LP)
码激励线性预测(CELP)
声音活动检测(VAD)
清浊(U/V)判别
码本
wideband speech coding
wavelets transform
code excited linear prediction (CELP)
linear prediction (LP)
voice activity detecting