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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.
收藏  |  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
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
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
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
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
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