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Note: This addon document is for an older version of GRASS GIS that will be discontinued soon. You should upgrade your GRASS GIS installation, and read the current addon manual page.

NAME

i.sar.speckle - Remove speckle from SAR image

KEYWORDS

imagery, speckle, sar, radar

SYNOPSIS

i.sar.speckle
i.sar.speckle --help
i.sar.speckle input=name output=name method=string size=integer [--overwrite] [--help] [--verbose] [--quiet] [--ui]

Flags:

--overwrite
Allow output files to overwrite existing files
--help
Print usage summary
--verbose
Verbose module output
--quiet
Quiet module output
--ui
Force launching GUI dialog

Parameters:

input=name [required]
Name of input image
output=name [required]
Name of output image
method=string [required]
Method for speckle removal
Options: lee
Default: lee
size=integer [required]
Size of neighborhood
Default: 11

Table of contents

DESCRIPTION

A simple procedure to reduce speckle noise in SAR images.

So far, the only algorithm implemented is the Lee filter. So, the method parameter is set to lee by default.

The size parameter is the one used in r.neighbors and is used to calculate local mean and local square mean. It must be odd.

REFERENCES

Lee, J. S. (1986). Speckle suppression and analysis for synthetic aperture radar images. Optical engineering, 25(5), 255636.

SEE ALSO

r.neighbors

AUTHOR

Margherita Di Leo

SOURCE CODE

Available at: i.sar.speckle source code (history)

Latest change: Mon Jun 28 07:54:09 2021 in commit: 1cfc0af029a35a5d6c7dae5ca7204d0eb85dbc55


Note: This addon document is for an older version of GRASS GIS that will be discontinued soon. You should upgrade your GRASS GIS installation, and read the current addon manual page.

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