grid_filter_3-Multi_Direction_Lee_Filter

Multi Direction Lee Filter

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contributed at 2018-11-06

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Geography SubjectGIScience & Remote SensingGrid Processing

Detailed Description

The tool searches for the minimum variance within 16 directions and applies a Lee Filter in the direction of minimum variance. The filter is edge-preserving and can be used to remove speckle noise from SAR images or to smooth DTMs. Applied to DTMs, this filter will preserve slope breaks and narrow valleys.For more details, please refer to:Lee, J.S. (1980): Digital image enhancement and noise filtering by use of local statistics. IEEE Transactions on Pattern Analysis and Machine Intelligence, PAMI-2: 165-168Lee, J.S., Papathanassiou, K.P., Ainsworth, T.L., Grunes, M.R., Reigber, A. (1998): A New Technique for Noise Filtering of SAR Interferometric Phase Images. IEEE Transactions on Geosciences and Remote Sensing 36(5): 1456-1465.Selige, T., B枚hner, J., Ringeler, A. (2006): Processing of SRTM X-SAR Data to correct interferometric elevation models for land surface process applications. In: B枚hner, J., McCloy, K.R., Strobl, J. [Eds.]: SAGA - Analysis and Modelling Applications. G枚ttinger Geographische Abhandlungen, Vol. 115: 97-104 <PDF>

How to cite

SAGA (2018). grid_filter_3-Multi_Direction_Lee_Filter, Model Item, OpenGMS, https://geomodeling.njnu.edu.cn/modelItem/4de9da8f-dc47-4d2a-a681-4cbc14ce8a1d
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contributed at 2018-11-06

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