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List:       openslide-users
Subject:    Re: DICOM support with properties
From:       jcupitt () gmail ! com
Date:       2023-05-10 16:07:28
Message-ID: CAGNS0Rut7+ihOJvo4fLB2xBEztsKCG=tJdUy-Fz90qZ4nnO1VA () mail ! gmail ! com
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Hi Jim,

DICOM support is being added under a project that's due to finish by
the end of June. I think all the features you're planning are on the
roadmap, so if you can wait until then, they should just happen.

Label and macro work for 3dhistech now, and there's a PR in train for
Leica support.

I'm currently reworking the DICOM parser to improve performance for
sparse tile images -- that should be another PR later this week or
early next.

My forks, in case you're interested in following or collaborating on
development:

https://github.com/jcupitt/libdicom

https://github.com/jcupitt/openslide/

John

On Wed, 10 May 2023 at 01:39, Jim O'Donnell <jim.odonnell@pathai.com> wrote:
> 
> I've been very excited to see the new support for DICOM that recently got merged! \
> I'm working on a PR that will expose some of the openslide.* properties that we \
> rely on, and I'm reaching out in advance. 
> My plan is to infer openslide.mpp-x and openslide.mpp-y from \
> SharedFunctionalGroupsSequence -> PixelMeasuresSequence -> PixelSpacing, and \
> openslide.objective-power from ObjectiveLensPower. I'll cache these at each layer \
> alongside the tile information and refer to the lowest layer for setting the props. \
>  In a separate PR I'd like to also expose openslide.associated.label and \
> openslide.associated.macro. It looks like that should be fairly trivial as there's \
> already code to identify those objects. 
> Any feedback on this plan would be appreciated!
> 
> Jim O'Donnell
> PathAI
> 
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