Map 3D Pose to 2D again after Translation or Rotation

[alexivaner]

Hello everyone, any ideas for doing rotation and translation to our 3D Skeleton then apply it back to 2D? My plan will like, I would to doing rotation and translation so my skeleton matches a certain camera angle from another 2D Skeleton. If anyone could give me a clue or keywords, I will be really thankfull. Thank you very much for your all helps.

[una-dinosauria]

You may want to read upon the perspective-n-point problem.