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Bilateral filtering can effectively smooth SAR images with the edges preserved, but it is difficult to optimally configure the parameters of bilateral filtering. Traditional method is based on an optimal trade-off hypothesis according to the despeckling estimation indexes, including the equivalent number of looks (ENL) and edge preserving index (EPI). However, the variance of gray value similarity obtained by traditional method has large error, and to improve accuracy, the computing time is increased linearly. In this paper, we present a novel method to configure the parameters of bilateral filtering based on the hypothesis and the monotone properties of the ENL and EPI curves. Experimental results show that the accuracy of variance of gray value similarity is increased by one order of magnitude in the case of almost the same computing time; the computing time is reduced by one order of magnitude for the same accuracy of variance of gray value similarity.
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Keywords:
- bilateral filtering /
- synthetic aperture radar /
- speckle reduction /
- parameters configuration
[1] Jiang Z H, Huang S X, He R, Zhou C T 2011 Acta Phys. Sin. 60 068401 (in Chinese) [姜祝辉, 黄思训, 何然, 周晨腾 2011 60 068401]
[2] Jiang Z H, Huang S X, Shi H Q, Zhang W, Wang B 2011 Acta Phys. Sin. 60 108402 (in Chinese) [姜祝辉, 黄思训, 石汉青, 张伟, 王彪 2011 60 108402]
[3] Novak L M, Owirka G J, Weaver A L 1999 IEEE Trans. Aero. Elec. Sys. 35 157
[4] Nico G, Leva D, Antonello G, Tarchi D 2004 IEEE Geosci. Remote 42 1344
[5] Siegert F, Hoffmann A A 2000 Remote Sens. Environ. 72 64
[6] McNairn H, Brisco B 2004 Can. J. Remote Sens. 30 525
[7] Thompson A A, Luscombe A P, James K, Fox P 2001 Proceedings of International Geoscience Remote Sensing Symposium Sydney, Australia, July 9--13 2001 p485
[8] Askne J I H, Dammert P B G, Ulander L M H, Smith G 1997 IEEE Trans. Geosci. Remote 35 25
[9] Tomasi C, Manduchi R 1998 Proceedings of the 6th IEEE International Conference on Computer Vision Bombay, India, January 4--7, 1998 p839
[10] Zhang W G, Liu F, Jiao L C 2009 Electron. Lett. 45 781
[11] Zhang W G, Zhang Q, Yang C S 2011 Electron. Lett. 47 286
[12] Elad M 2002 IEEE T. Image Process 11 1141
[13] Barash D 2002 IEEE T. Pattern Anal. 24 844
[14] Barash D, Comaniciu D 2004 Image Vision Comput. 22 73
[15] Li J C, Huang S X, Peng Y X, Zhang W M 2011 Proceedings of the 3rd International Conference on Information Science and Engineering Yangzhou, China September 29 -- October 1, 2011 p778
[16] Zhang B Y, Allebach J P 2008 IEEE T. Pattern Anal. 17 664
[17] Oliver C, Quegan S 2004 Understanding Synthetic Aperture Radar Images (Raleigh: SciTech Publishing, Inc) p95
[18] Zhang H, Wang C, Zhang B, Wu F, Yan D M 2009 High-Resolution SAR Image Target Recognition (Beijing: Science Press) (in Chinese) pp43--44 [张红, 王超, 张波, 吴樊, 闫冬梅 2009 高分辨率SAR图像目标识别 (北京: 科学出版社) 第43---44页]
[19] Lee J S 1980 IEEE T. Pattern Anal. 2 165
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[1] Jiang Z H, Huang S X, He R, Zhou C T 2011 Acta Phys. Sin. 60 068401 (in Chinese) [姜祝辉, 黄思训, 何然, 周晨腾 2011 60 068401]
[2] Jiang Z H, Huang S X, Shi H Q, Zhang W, Wang B 2011 Acta Phys. Sin. 60 108402 (in Chinese) [姜祝辉, 黄思训, 石汉青, 张伟, 王彪 2011 60 108402]
[3] Novak L M, Owirka G J, Weaver A L 1999 IEEE Trans. Aero. Elec. Sys. 35 157
[4] Nico G, Leva D, Antonello G, Tarchi D 2004 IEEE Geosci. Remote 42 1344
[5] Siegert F, Hoffmann A A 2000 Remote Sens. Environ. 72 64
[6] McNairn H, Brisco B 2004 Can. J. Remote Sens. 30 525
[7] Thompson A A, Luscombe A P, James K, Fox P 2001 Proceedings of International Geoscience Remote Sensing Symposium Sydney, Australia, July 9--13 2001 p485
[8] Askne J I H, Dammert P B G, Ulander L M H, Smith G 1997 IEEE Trans. Geosci. Remote 35 25
[9] Tomasi C, Manduchi R 1998 Proceedings of the 6th IEEE International Conference on Computer Vision Bombay, India, January 4--7, 1998 p839
[10] Zhang W G, Liu F, Jiao L C 2009 Electron. Lett. 45 781
[11] Zhang W G, Zhang Q, Yang C S 2011 Electron. Lett. 47 286
[12] Elad M 2002 IEEE T. Image Process 11 1141
[13] Barash D 2002 IEEE T. Pattern Anal. 24 844
[14] Barash D, Comaniciu D 2004 Image Vision Comput. 22 73
[15] Li J C, Huang S X, Peng Y X, Zhang W M 2011 Proceedings of the 3rd International Conference on Information Science and Engineering Yangzhou, China September 29 -- October 1, 2011 p778
[16] Zhang B Y, Allebach J P 2008 IEEE T. Pattern Anal. 17 664
[17] Oliver C, Quegan S 2004 Understanding Synthetic Aperture Radar Images (Raleigh: SciTech Publishing, Inc) p95
[18] Zhang H, Wang C, Zhang B, Wu F, Yan D M 2009 High-Resolution SAR Image Target Recognition (Beijing: Science Press) (in Chinese) pp43--44 [张红, 王超, 张波, 吴樊, 闫冬梅 2009 高分辨率SAR图像目标识别 (北京: 科学出版社) 第43---44页]
[19] Lee J S 1980 IEEE T. Pattern Anal. 2 165
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