一种基于相干斑抑制技术的SAR图像编码方法
doi: 10.3724/SP.J.1146.2006.00358
A SAR Image Coding Method Based on Speckle Suppression Technology
-
摘要: 该文讨论了相干斑抑制技术中软阈值、硬阈值和Garrote函数去噪的方法，并对这些方法进行了比较；文中在讨论了嵌入式零树编码技术的基础上，提出了采用基于相干斑抑制技术的图像编码方法，利用该方法实现了对SAR图像数据的编码处理，给出了相应的处理结果。实验结果表明：在进行图像编码过程中对相干斑的抑制取得了较好效果。Abstract: This paper presents the speckle suppression technology which includes the soft threshold, the hard threshold and the Garrote function threshold method. It gives the contrast result of the three method. Analyzed the embedded zero-trees wavelet coding method, it presents a SAR(Synthetic Aperture Radar) image coding technology with the speckle suppression. Finally, it presents a compressed SAR image with the speckle suppression. The results show that the speckle of the SAR image is suppressed during coding the SAR image.
-
Donoho D L and Johnstone I M. Ideal spatial adaptation via wavelet shrinkage[J].Biometrika.1994, 81(1):425-455[2]Donoho D L and Johnstone I M. Adapting to unknown smoothness via wavelet shrinkage[J].Journal of the Amencan Statistical Association.1995, 90(8):1200-1210[3]Donoho D. Denoising by soft-thresholding. IEEE Trans. on Infonn. Thwry, 1995, IT-41(2): 613-627.[4]Breiman L. Better subset regression using the nonnegative garrote[J].Technometrics.1995, 37(1):373-384[5]Bruce A G and Gao H-Y. Understanding waveshrink: Variance and bias estimation[J].Biometrika.1996, 83(2):727-745[6]Shapiro J M. Embedded image coding using zerotrees of wavelet coefficients. IEEE Trans. on Signal Processing, 1993, 41(12): 1645-1663.[7]赵松年, 熊小芸. 子波变换与子波分析. 北京: 工业出版社, 1996: 35-123. -
计量
- 文章访问数: 3191
- HTML全文浏览量: 74
- PDF下载量: 526
- 被引次数: 0
下载:
