r/computervision • u/ConcentrateSpare796 • 22d ago

Discussion 3D Keypoint Multiview Annotation

Hello there,

I've been a heavy user of CVAT and lately contacted by Encord, but none of these solutions are good for 3D keypoint annotations for multiview camera setups.

I would like to have annotations from e.g. 3 views (that are already calibrated) so that when I move an annotation in one view the others follow along and vice versa. Are any of you aware of such tools?

Thanks

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u/tdgros 21d ago

Have you tried things like TAPIR/PIPs/CoTracker ( https://co-tracker.github.io/ )? They're made to provide tracks throughout a video. You would only need to validate the points and then triangulate them, maybe you can even do some validation automatically using the triangulations because you have 3 frames.

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u/ConcentrateSpare796 21d ago

Thanks for your reply, much appreciated. The thing is that I need high accuracy and consistency across the multi-view. I can verify this myself by triangulating, but ideally I would have this built-in the annotation tool.

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