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i.tasscap.1grass
Langue: en
Version: 254134 (debian - 07/07/09)
Section: 1 (Commandes utilisateur)
NAME
i.tasscap - Tasseled Cap (Kauth Thomas) transformation for LANDSAT-TM dataKEYWORDS
raster, imagerySYNOPSIS
i.tasscapi.tasscap help
i.tasscap [-457] band1=string band2=string band3=string band4=string band5=string band7=string outprefix=string [--overwrite] [--verbose] [--quiet]
Flags:
- -4
use transformation rules for LANDSAT-4- -5
use transformation rules for LANDSAT-5- -7
use transformation rules for LANDSAT-7- --overwrite
Allow output files to overwrite existing files- --verbose
Verbose module output- --quiet
Quiet module output
Parameters:
- band1=string
raster input map (LANDSAT channel 1)- band2=string
raster input map (LANDSAT channel 2)- band3=string
raster input map (LANDSAT channel 3)- band4=string
raster input map (LANDSAT channel 4)- band5=string
raster input map (LANDSAT channel 5)- band7=string
raster input map (LANDSAT channel 7)- outprefix=string
raster output TC maps prefix
DESCRIPTION
i.tasscap calculates Tasseled Cap (Kauth Thomas, TC) transformation for LANDSAT-TM data (TM4, TM5, TM7). The following TC components are generated:-
tasscap.1: corresponds to brightness,
tasscap.2: corresponds to greenness,
tasscap.3: corresponds to wetness,
tasscap.4: corresponds to atmospheric haze.
EXAMPLE
Calculation of TC maps from North Carolina Landsat scene:g.region rast=lsat7_2002_10 -p
i.tasscap -7 band1=lsat7_2002_10 band2=lsat7_2002_20 \
band3=lsat7_2002_30 band4=lsat7_2002_40 \
band5=lsat7_2002_50 band7=lsat7_2002_70 \
outprefix=tasscap
Results:
|
'Brightness' Tasseled Cap component 1 |
'Greenness' Tasseled Cap component 2
|
'Wetness' Tasseled Cap component 3 |
'Atmospheric haze' Tasseled Cap component 4
REFERENCES
-
- LANDSAT-4/LANDSAT-5: TC-factor changed to CRIST et al. 1986, Proc. IGARSS 1986, p.1467
- LANDSAT-7: TASSCAP factors cited from: DERIVATION OF A TASSELED CAP TRANSFORMATION BASED ON LANDSAT 7 AT-SATELLITE REFLECTANCE Chengquan Huang, Bruce Wylie, Limin Yang, Collin Homer and Gregory Zylstra Raytheon ITSS, USGS EROS Data Center Sioux Falls, SD 57198, USA http://landcover.usgs.gov/pdf/tasseled.pdf
This is published as well in INT. J. OF RS, 2002, VOL 23, NO. 8, 1741-1748.
Compare discussion: http://adis.cesnet.cz/cgi-bin/lwgate/IMAGRS-L/archives/imagrs-l.log0211/date/article-14.html
AUTHOR
Markus Neteler, ITC-irstLast changed: $Date: 2009-01-24 23:31:57 +0100 (Sat, 24 Jan 2009) $
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