[gdal-dev] About COG with multiple bands

Javier Jimenez Shaw j1 at jimenezshaw.com
Sun May 1 02:10:48 PDT 2022


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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