Multispectral Export.

[gnsaket123]

Hello,

I am finding difficulty in exporting a RED band  orthomosaic. I changed the master channel and followed the same process. I know i need to export in TIFF format, but even when i do, the complete spectrum is being exported, not just RED.

Does it have something to do with the type of TIFF compression?

Pls give some ideas.

Thank You
Regards
Saket

[andyroo]

Can you tell if the band you want is part of the exported TIFF? If it is, you can use GDAL to export the band you want. For example to extract band 1 (red in a standard RGB) you would just use

gdal_translate -b 1 input.tif output.tif

[Alexey Pasumansky]

Hello Saket,

I think you can use Raster Calculator tool and set single output band from the Red band, then export Orthomosaic using Raster Transform -> Index Value option.

[gnsaket123]

Hello ,


Yes, I have figured it out. Now comes my second question, I see there are two options when i export the orthomosaic,
1. Index value
2. Index color.

When I use index value option, will I be able to see the actual NDVI numbers on the map, because using  both the options(index value and index color) yield the same results.

Or is there any way i can observe the NDVI numbers instead of just the false color?


Thank You
Regards
Saket

[Alexey Pasumansky]

Hello Saket,

Index color will save the RGB image that you see in the Orthoview (index will be colored according to defined palette options). Index value option will save a floating point file where each XY point will contain the calculated index value.