[gdal-dev] About COG with multiple bands

[Even Rouault]

Javier,

up to now, GDAL has restricted the COG definition to pixel interleaved 
organization, a bit artificially admittedly. This issue was recorded in 
https://github.com/opengeospatial/CloudOptimizedGeoTIFF/issues/3 . 
There's no way to efficiently extract a subset of bands with pixel 
interleaved organization.

Even

Le 01/05/2022 à 11:10, Javier Jimenez Shaw a écrit :
> Hi
>
> In the event "Cloud Native Geospatial" Chris mentioned that a COG file 
> allows to extract just a few bands. For instance, from a satellite 
> image with 12 bands, you could extract only red, green and blue, not 
> needing to download all the bands. In this example it would be a 
> reduction factor of 4.
>
> If I understand correctly from 
> https://gdal.org/drivers/raster/cog.html "Pixel interleaving for 
> multi-band dataset" the optimization mentioned above could not be 
> possible. Am I right? Is there any efficient way to read just one band?
>
> Thanks,
> Javier.
> .___ ._ ..._ .. . ._. .___ .. __ . _. . __..  ... .... ._ .__
> Entre dos pensamientos racionales
> hay infinitos pensamientos irracionales.
>
>
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