[GRASS-user] Derivation of Landsat 8 Tasseled Cap coefficients for certain scene in Grass

Nikos Alexandris nik at nikosalexandris.net
Wed Jun 10 04:18:22 PDT 2015

* Kozlova Maria <kclo at yandex.ru> [2015-06-10 11:48:44 +0300]:

> Dear colleagues, 
> Thank you for response.
> a little bit later I will type the full procedure for derivation of TC coefficients.
> PCA itself cannot be applied here as it is based only on statistical information of the image. TCT is physically based transformation and PCA is only the first step.
> The main problem I see here is the 'soil line' which must be determined (manually or automatically) and PCA axes rotation to align 1st PCA component in accordance to the soil line.
> Though I have to describe it in more details later...

This introduction <http://www.sjsu.edu/faculty/watkins/tassel.htm> looks
good for me :-)


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