收稿日期: 2013-04-25
修回日期: 2013-07-15
网络出版日期: 2014-03-15
基金资助
国家自然科学基金面上基金（61272317）和安徽省自然科学基金面上基金（1208085MF90）资助
An edge detection algorithm of SAR images based on dual-tree complex wavelet transform
Received date: 2013-04-25
Revised date: 2013-07-15
Online published: 2014-03-15
毛成林 , 万寿红 , 岳丽华 , 夏瑜 . 一种基于双树复小波变换的SAR图像边缘检测算法[J]. 中国科学院大学学报, 2014 , 31(2) : 238 -242 . DOI: 10.7523/jssn.2095-6134.2014.02.014
We propose an edge detection algorithm of SAR images based on dual-tree complex wavelet transform. We use the oriented gradient of histogram method to calculate the gradient matrix on all complex wavelet subbands, and acquire the global matrix based on the directional selectivity and multi-scale property of dual-tree complex wavelet transform. The edges are extracted by thresholding the matrix. The proposed algorithm effectively detects significant edges, and it is robust to the speckle noise, intensity inhomogeneity, and blurred boundaries of SAR images. The experimental results show effectiveness of the proposed algorithm.
[1] Lee J S. Digital image enhancement and noise filtering by use of local statistics[J]. Pattern Analysis and Machine Intelligence, IEEE Transactions on, 1980 (2): 165-168.
[2] Canny J. A computational approach to edge detection[J]. Pattern Analysis and Machine Intelligence, IEEE Transactions on, 1986(6): 679-698.
[3] Blake A P, Blacknell D, Oliver C J. High resolution SAR clutter textural analysis[C]//Recent developments in radar and sonar imaging systems: what next? IEE Colloquium on. London, 1995: 10/1-10/9.
[4] Li C, Xu C, Gui C, et al. Distance regularized level set evolution and its application to image segmentation[J]. Image Processing, IEEE Transactions on, 2010, 19(12): 3243-3254.
[5] Kuo J M, Chen K S. The application of wavelets correlator for ship wake detection in SAR images[J]. Geoscience and Remote Sensing, IEEE Transactions on, 2003, 41(6): 1506-1511.
[6] Jiang W, Lam K M, Shen T Z. Efficient edge detection using simplified Gabor wavelets[J]. Systems, Man, and Cybernetics, Part B: Cybernetics, IEEE Transactions on, 2009, 39(4): 1036-1047.
[7] Kingsbury N. Image processing with complex wavelets[J]. Philosophical Transactions of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences, 1999, 357(1760): 2543-2560.
[8] Arbelaez P, Maire M, Fowlkes C, et al. Contour detection and hierarchical image segmentation[J]. Pattern Analysis and Machine Intelligence, IEEE Transactions on, 2011, 33(5): 898-916.
[9] 王正明, 朱矩波, 等. SAR 图像提高分辨率技术[M]. 北京:科学出版社, 2006.
[10] Scharcanski J, Jung C R, Clarke R T. Adaptive image denoising using scale and space consistency[J]. Image Processing, IEEE Transactions on, 2002, 11(9): 1092-1101.
[11] Baeza-Yates R, Ribeiro-Neto B. Modern information retrieval[M]. New York: ACM Press, 1999.
/
| 〈 |
|
〉 |
