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Author Topic: BigTiff library for tiffs bigger than 4gb  (Read 3486 times)

wojtek

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BigTiff library for tiffs bigger than 4gb
« on: January 18, 2021, 02:36:38 PM »
I think it's worth looking at.

Alexey Pasumansky

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Re: BigTiff library for tiffs bigger than 4gb
« Reply #1 on: January 18, 2021, 02:52:18 PM »
Hello wojtek,

BigTIFF export option is already available for Orthomosaic and DEM export.
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Alexey Pasumansky,
Agisoft LLC

PROBERT1968

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Re: BigTiff library for tiffs bigger than 4gb
« Reply #2 on: January 19, 2021, 04:07:33 AM »
Have you tried export TIFF with deflate ?  If you export as a TIFF with None compression. it is hugh file size.

wojtek

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Re: BigTiff library for tiffs bigger than 4gb
« Reply #3 on: January 21, 2021, 04:39:01 PM »
Hello wojtek,

BigTIFF export option is already available for Orthomosaic and DEM export.

Nice, I don't use these features so have not known that. Would be nice to have this for exporting regular textures as well.

Have you tried export TIFF with deflate ?  If you export as a TIFF with None compression. it is hugh file size.
Would be nice to have that for exporting regular textures too.

I'm more concerned by the read/write speed rather than the filesize on disk in this case.

Alexey Pasumansky

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Re: BigTiff library for tiffs bigger than 4gb
« Reply #4 on: January 21, 2021, 04:45:45 PM »
Hello wojtek,

Have you used BigTIFF textures with common image and model editing applications? We have not performed such tests, but are not sure, that such data type is properly supported by many applications of these types.
Best regards,
Alexey Pasumansky,
Agisoft LLC

wojtek

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Re: BigTiff library for tiffs bigger than 4gb
« Reply #5 on: January 21, 2021, 06:46:23 PM »
Hello wojtek,

Have you used BigTIFF textures with common image and model editing applications? We have not performed such tests, but are not sure, that such data type is properly supported by many applications of these types.

To be fair, it is not :)

That being said, in our proprietary tools we implemented it as such that whenever an exported texture is >4Gb the format switches to BigTiff, if files are smaller it uses regular Tiff. That keeps things compatible but also lets us export massive files.