DICOM support with properties

[jcupitt at gmail.com]

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 at 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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