Some questions regarding the definition of coordinate systems and certain variables. - Githubissues

zc-alexfan / arctic

[CVPR 2023] Official repository for downloading, processing, visualizing, and training models on the ARCTIC dataset.

https://arctic.is.tue.mpg.de

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Some questions regarding the definition of coordinate systems and certain variables. #54

Closed y200504040u closed 5 days ago

y200504040u commented 1 month ago

Thank you for your excellent work. I have some questions and uncertainties regarding this project.

Could you please clarify what coordinate system is specifically referred to as 'canonical' mentioned below? And I am not sure about the meaning of R0 and T0. The highest dimension of R0 and T0 is 1, so I guess that it's the pose of the egocentric camera in the world coordinate system for the first frame of seq.

img_v3_02fu_50ab1be6-ecce-49e0-9b8d-93e9384c96ag

Please explain what "articulation" specifically refers to as a variable and its exact meaning.
As shown in the image below, each part of the object has one 3d bbox and 16 3d kpts. I noticed that scripts_data/process_seqs.py seems to output bbox3d and kp3d, but scripts_data/visualizer.py does not seem to display them.

Thanks a lot!

github-actions[bot] commented 1 week ago

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