A review of SAR speckle filters: texture restoration and preservation
Geoscience and Remote Sensing Symposium, 2000. Proceedings. IGARSS 2000. IEEE 2000 International（2000）
摘要
Speckle filtering is probably one of the important steps in post SAR (synthetic aperture radar) image processing. Speckle appears in all SAR products including single-polarimetric, multipolarimetric and interferometric image data. Many speckle filtering algorithms have been proposed aimed at speckle reduction. Texture, revealing the spatial-dependent information in images, may be as important as other polarimetric measures. Such information is not expected being distorted and degraded during speckle suppression. This paper examines various speckle filters including the Lee, Frost, Kuan and other filters in terms of texture preservation. The first and second order texture measures are used in the assessment
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关键词
geophysical signal processing,geophysical techniques,image texture,radar imaging,remote sensing by radar,speckle,synthetic aperture radar,terrain mapping,frost filter,kuan filter,lee filter,sar,geophysical measurement technique,image processing,land surface,radar remote sensing,speckle filter,speckle filtering algorithm,texture preservation,texture restoration,adaptive filters,polarization,image restoration,second order,degradation,spatial dependence
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