[gdal-dev] COG - RGBI

[Travis Kirstine]

Thanks all for the feedback!

Right now we are looking at doing this for only 8bit.

Regards


On Fri, 8 May 2020 at 15:14, Frank Warmerdam <warmerdam at pobox.com> wrote:

> Travis,
>
> The big benefit of JPEG compression comes with YCbCr color space which I
> do not believe can be mixed with a 4 band RGBI product.  So I'm not sure
> how one would do this.  One could certainly put the NIR in a distinct
> directory in the GeoTIFF, but not many applications would know how to
> utilize that, and it would not appear as just a 4th band from the GDAL view
> of things.
>
> In theory you could do BAND interleaved JPEG and compress each of the 4
> bands separately but I do not think you get a great quality/compression
> result from this.
>
> I'm also curious if you were wanting to just do 8bit or 12/16bit?
>
> I would love to have a way of distributing 12/16 bit RGBI data with a good
> (gentle) lossy compression and good application compatibility in TIFF.
>
> Best regards,
> Frank
>
> On Fri, May 8, 2020 at 3:08 PM Travis Kirstine <traviskirstine at gmail.com>
> wrote:
>
>> Is it possible to create RGBI Cloud Optimized Tiffs with JPEG compression?
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>
>
>
> --
>
> ---------------------------------------+--------------------------------------
> I set the clouds in motion - turn up   | Frank Warmerdam,
> warmerdam at pobox.com
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>
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