[gdal-dev] setting MAX_Z_ERROR on overviews compressed with LERC_DEFLATE

[Even Rouault]

We would need a MAX_Z_ERROR_OVERVIEW config option for that. Please file 
an enhancement ticket

Even

Le 18/11/2021 à 12:44, Duarte Carreira a écrit :
> Hi there.
>
> I am looking into compressing overviews for a DEM, with LERC_DEFLATE 
> and it works. But I'm trying to set the precision loss and get better 
> compression, since for overviews I don't really care that much.
> Ok, so the question is how to set the MAX_Z_ERROR for overviews 
> compressed with LERC_DEFLATE?
>
> More context:
> My reasoning is to compress losslessly the dem with deflate predictor 
> 3, and then compress "lossly"  the overviews with lerc_deflate.
> Since this is 32bit dataset, I can't use jpeg on the overviews.
>
> Thanks in advance.
> Duarte
>
>
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