Title :
Speckle filter for Weibull-distributed SAR images
Author :
de Fatima Carvalho Ferreira, A. ; Fernandes, David
Author_Institution :
Inst. Tecnologico de Aeronaut., Centro Tecnico Aeroespacial, San Jose dos Campos, Brazil
Abstract :
The speckle-texture multiplicative model with Weibull distribution is used to represent the SAR image of one or more looks. A punctual nonlinear transformation applied to the original image produces the filtered image. This nonlinear transformation employs the local estimation of the scale and form parameters of the Weibull distribution to perform the filtering. The filter performance is analyzed in terms of equivalent number of looks (ENL) and resolution, which shows a good performance
Keywords :
Weibull distribution; geophysical signal processing; geophysical techniques; image texture; radar imaging; remote sensing by radar; speckle; synthetic aperture radar; terrain mapping; SAR; Weibull-distributed SAR image; equivalent number of looks; filtered image; geophysical measurement technique; land surface; nonlinear transformation; punctual nonlinear transformation; radar imaging; radar remote sensing; speckle filter; speckle-texture multiplicative model; synthetic aperture radar; terrain mapping; Equations; Filtering; Filters; Image segmentation; Image texture; Performance analysis; Pixel; Random variables; Speckle; Weibull distribution;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 2000. Proceedings. IGARSS 2000. IEEE 2000 International
Conference_Location :
Honolulu, HI
Print_ISBN :
0-7803-6359-0
DOI :
10.1109/IGARSS.2000.861657
