收稿日期: 2009-11-09
修回日期: 2010-01-06
网络出版日期: 2010-07-15
Application of EMD-based speckle reduction and tophat transform in preprocessing of ship detection
Received date: 2009-11-09
Revised date: 2010-01-06
Online published: 2010-07-15
艾加秋 , 齐向阳 , 刘凡 , 石力 . 经验模式分解去斑和顶帽变换在舰船检测预处理中的应用[J]. 中国科学院大学学报, 2010 , 27(4) : 517 -522 . DOI: 10.7523/j.issn.2095-6134.2010.4.013
In this paper, a new algorithm is proposed based on the EMD (empirical mode decomposition) speckle reduction and tophat transform. First, we use EMD to every column signal of the image to get the IMF signals, deduce the first and second IMF signals from the original signal to get a coarse-processed image, and then do the same to the row signal of the coarse-processed image. The speckle can be greatly reduced with this algorithm. Furthermore, the local background of non-homogeneity caused by waves is greatly reduced with tophat transform. The signal-to-clutter-rate of the image is greatly enhanced, which is favorable for detection. The simulation results show the effectiveness of the algorithm.
[1] Chen S, Wang J F. A new algorithm for ship detection in SAR images
[J].Information Technology, 2008(4):118-120(in Chinese). 陈 珊,王军锋.SAR图像上舰船目标检测的一种新算法
[J].信息技术,2008(4):118-120.
[2] Li H Y, He Y J. Detection of weak ship signals with the optimization of polarimetric contrast enhancement
[J]. High Technology Letters, 2008, 14(1):85-91.
[3] Chen D Y, Tu G F. A new algorithm of ship targets detection in SAR images using wavelet transform
[J]. Journal of Electronics & Information, 2007, 29(4): 855-858(in Chinese). 陈德元,涂国防.一种基于小波变换的SAR图像舰船检测的新算法
[J].电子与信息学报, 2007, 29(4):855-858.
[4] Rafael C Gonzalez, Richard E. Digital image processing
[M].Prentice Hall,2002:420-454.
[5] Stoica Petre, Li J, Xue M. On binary probing signals and instrumental variables receivers for radar
[J]. IEEE Transactions on Information Theory, 2008,8(54):86-90.
/
| 〈 |
|
〉 |
