azonenberg,
@azonenberg@ioc.exchange avatar

Anybody know of tooling that can read a JPEG-compressed TIFF file that has >2^31 pixels?

ImageJ uses signed 32-bit pixel coordinates and fails to load it with a negative array index exception, GIMP complains about something related to the JPEG coding using the wrong subsampling factor or something. "convert" complains about an invalid image size.

claudius,
@claudius@darmstadt.social avatar

@azonenberg
I've worked with ridiculously large files in Photoshop, but certainly not 2 billion pixels across. Good luck!

Imagagick's convert perhaps? We used it to create an image pyramid for openzoom (Adobe flash era). But again, never for stuff that large.

azonenberg,
@azonenberg@ioc.exchange avatar

@claudius 2G total not 2G in one axis.

azonenberg,
@azonenberg@ioc.exchange avatar

@claudius but imagej uses signed 32 bit pixel indexes so anything bigger than 46K pixels on a side, on average, won't work

flameeyes,
@flameeyes@mastodon.social avatar

@azonenberg ffmpeg might be able.

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