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luyangzhu avatar luyangzhu commented on August 17, 2024

We can only extract proj_mat from the game engine. I've tried to compute camera intrinsics from the proj_mat, but failed. It seems the game engine baked several matrices into this one. If you managed to do it, feel free to open a pull request.

from nba2k-dataset.

nicolasugrinovic avatar nicolasugrinovic commented on August 17, 2024

Ok, thanks for the response. Yes, it seems that the engine then mixes a view matrix with a projection matrix somehow fusing A, R, and T and the type of projection used. So you go from world space directly to clip space. Maybe one could use SVD for this, but I guess it is not that straightforward.

from nba2k-dataset.

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