CGTASSELEDCAPCOEFFS
This function returns tasseled cap coefficients from various sources to perform
the tasseled cap transformation on appropriate (e.g. LandSat) images. The program
requires that one of the keywords be set.
Categories
Utility
Keywords
envi: in, optional, type=boolean
Set this keyword to return the tasseled cap coeficients used by ENVI 4.8.
These are reported (by ITTVIS) to be for LandSat-5 TM data, although others
report these are in error for TM-5 data and really apply to TM-4 data.
Reference: http://www.exelisvis.com/language/en-US/UserCommunity/UserForums/forumid/29/threadid/12985/scope/posts.aspx.
etm: in, optional, type=boolean
Set this keyword to return the tasseled cap coeficients proposed by the USGS for
LandSat-7 ETM+ images. Note that these values should be applied to reflectances.
Reference: http://landcover.usgs.gov/pdf/tasseled.pdf.
imagine: in, optional, type=boolean
Set this keyword to return the tasseled cap coeficients used by the ERDAS Imagine software
for LandSat-5 data.
ls4: in, optional, type=boolean
Set this keyword to return the tasseled cap coeficients reported by Crist, Laurin and Cicone
for LandSat-4 imagery. Reference: http://www.ciesin.org/docs/005-419/005-419.html.
ls5: in, optional, type=boolean
Set this keyword to return the tasseled cap coeficients reported by Crist, Laurin and Cicone
for LandSat-5 imagery. Reference: http://www.ciesin.org/docs/005-419/005-419.html.
mss: in, optional, type=boolean
Set this keyword to return the tasseled cap coeficients originally reported by R.J Kauth and G.S. Thomas
for MSS LandSat imagery. Reference: http://web.pdx.edu/~jduh/courses/Archive/geog481w07/Students/Marcello_TasselledCap.pdf.
Also: http://www.sjsu.edu/faculty/watkins/tassel.htm.
quickbird: in, optional, type=boolean
Set this keyword to return the tasseled cap Graham-Schmidt coeficients reportedly used for Quickbird imagery.
Reference: http://www.asprs.org/a/publications/proceedings/pecora16/Yarbrough_L.pdf
tm: in, optional, type=boolean
Set this keyword to return the tasseled cap coeficients originally proposed for TM imagery by Kauth and Thomas.
Reference: http://web.pdx.edu/~jduh/courses/Archive/geog481w07/Students/Marcello_TasselledCap.pdf.
Also: http://www.sjsu.edu/faculty/watkins/tassel.htm.
Examples
tasseledCapTransformedImage = landsat_tm_image ## cgTasselecCapCoeffs(/TM)
Author
FANNING SOFTWARE CONSULTING::
David W. Fanning
1645 Sheely Drive
Fort Collins, CO 80526 USA
Phone: 970-221-0438
E-mail: david@idlcoyote.com
Coyote's Guide to IDL Programming: http://www.idlcoyote.com
History
Written, 24 August 2012, by David W. Fanning.
Copyright
Copyright (c) 2012, Fanning Software Consulting, Inc.