…I'd expect it to be much faster than gdal_translate -of COG (if your input is GeoTIFF and always properly tiled and compressed of course!).
I’m confident I know what a properly compressed geotiff is, but what is a properly tiled one? (or if it’s easier to define: what are improperly tiled geotiff?) -Matt From: Even Rouault <[email protected]> Sent: June 4, 2021 9:33 AM To: thomas bonfort <[email protected]>; Matt.Wilkie <[email protected]> Cc: Gdal Dev <[email protected]> Subject: Re: [gdal-dev] Introducing the cogger and godal projects *** External email: Do not click on links or attachments except from trusted senders. *** ****************************************************************************************** I haven't benchmarked cogger but I'd expect it to be much faster than gdal_translate -of COG (if your input is GeoTIFF and always properly tiled and compressed of course!). gdal_translate -of COG uses generic GDAL API to acquire input data, which implies decompression / recompression. And in particular, if using input GeoTIFF with lossy compressed methods such as JPEG or WebP, cogger will avoid adding any new loss. Le 04/06/2021 à 18:28, thomas bonfort a écrit : I haven't extensively used -of COG (the cogger code actually predates the cog driver) but iirc there are at least some cases where it uses an intermediate file, which would imply that cogger does offer some speedups. I'll let Even confirm... Regards, Thomas Le ven. 4 juin 2021 à 18:14, <[email protected]<mailto:[email protected]>> a écrit : Is cogger specifically for the scenario where your converting a large imagery library that already exists, but isn't cloud optimized? i.e. Does it offer any advantages over the one step `gdal_translate -of cog ...` when starting fresh? Cheers, Matt Geomatics Analyst | Environment | T 867-667-8133 | Yukon.ca Hours: 08:30-16:30, Tue-Wed: Office, Thu-Fri: Remote. _______________________________________________ gdal-dev mailing list [email protected]<mailto:[email protected]> https://lists.osgeo.org/mailman/listinfo/gdal-dev -- http://www.spatialys.com<https://imsva91-ctp.trendmicro.com:443/wis/clicktime/v1/query?url=http%3a%2f%2fwww.spatialys.com&umid=BB1EB12E-C3F3-3E05-A4FC-DC578DED8704&auth=c132af8ee7c9d1278d61a701569070a095ce962e-b9e494bc988145611c35e65f34295c2b143834aa> My software is free, but my time generally not.
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