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ITK snap unable to open large files #146

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PolarBean opened this issue Oct 9, 2024 · 2 comments
Open

ITK snap unable to open large files #146

PolarBean opened this issue Oct 9, 2024 · 2 comments

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@PolarBean
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for some reason it seems itk snap is either unable to open some large files or simply opens them as all gray volumes.
for an example of a large volume which does not load on a machine with 256GB of ram see
https://datadryad.org/stash/downloads/file_stream/182481
and for my own time series data which loads as a gray volume see:
https://data-proxy.ebrains.eu/api/v1/buckets/space-for-testing-the-nutil-web-applicat/demba_dev_mouse_first_half.nii.gz

The first volume opens when i crop out some of the data and the second works when i crop the time dimension. Please let me know if I am missing something :) thank you

@baishi
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baishi commented Oct 10, 2024

Hi PolarBean,

I believe itksnap is able to open moderately large files. We managed to load a few GB large files. However, we haven't tried the file as large as 7.8GB. I'm downloading and giving it a try. However, the major time during loading would be the gunzip process, which is not very efficient.

As for gray volume, you can switch to Cursor Inspector tool and Under the Intensity under curosr: table, right click the Layer row and select Multi-Component Display and select RGB and you would see the colours.

Hope that helps.
Shi

@PolarBean
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Hi Baishi thanks for your reply.
When I say the volume is gray I don't mean that it's gray but should be colour. I mean it fails to load the contents of the volume and shows as all zeroes. This only occurs when I have 27 time points. If I have 26 it loads normally.
image

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