i.tasscap(1)

NAME
i.tasscap

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-irst

Last changed: $Date: 2009-01-24 23:31:57 +0100 (Sat, 24 Jan 2009) $

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