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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