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NAME

i.oif - Calculates Optimum-Index-Factor table for LANDSAT TM bands 1-5, & 7

KEYWORDS

raster, imagery, statistics

SYNOPSIS

i.oif
i.oif help
i.oif [-g] image1=string image2=string image3=string image4=string image5=string image7=string [--verbose] [--quiet]

Flags:

-g
Print in shell script style
--verbose
Verbose module output
--quiet
Quiet module output

Parameters:

image1=string
LANDSAT TM band 1.
image2=string
LANDSAT TM band 2.
image3=string
LANDSAT TM band 3.
image4=string
LANDSAT TM band 4.
image5=string
LANDSAT TM band 5.
image7=string
LANDSAT TM band 7.

DESCRIPTION

i.oif calculates the Optimum Index Factor for LANDSAT TM bands 1,2,3,4,5 and 7.

The Optimum Index Factor is calculated to determine the band combination which shows the maximum information when combined into a composite image. The bands comprising the highest scoring combination from i.oif are used as the three color channels required for d.rgb or r.composite.

The analysis is saved to a file in the current directory called "i.oif.result".

NOTES

Colour Composits in BGR order: important band combinations (example: 234 in BGR order means: B=2, G=3, R=4):

REFERENCES

Jensen, 1996. Introductory digital image processing, p.98. ISBN 0-13-205840-5

SEE ALSO

d.rgb
r.composite
r.covar
r.univar

AUTHOR

Markus Neteler, ITC-Irst, Trento, Italy
Updated to GRASS 5.7 by Michael Barton, Arizona State University

Last changed: $Date: 2007-11-13 03:07:56 -0800 (Tue, 13 Nov 2007) $


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