GLCM texture analysis

[PiriReis]

Hello,

I created VH/VV ratio band (in dB scale) and want to include GLCM, NDVI, optical bands, elevation band etc. to my classification.
I have some questions.

1- GLCM textures are based on VH and VV bands. So, does it meaningful to classify VH/VV ratio band (in dB scale) values and VH textures or VV textures together?

2- Should I do PCA before Random Forest Classification? If yes which band’s textures should I use for PCA? VH or VV? (I think for both it takes very long time as stated below)

@navv37

PCA operator takes way more time, once i tried with 24 layers it took around two day and still the process was 25% complete

and It is advised HH:

@johngan

If you want you can select only the GLCM parameters of HH polarization and perform a PCA

should I use only VV texture?