Challenges

This film was shot in a hall room, and the shooting environment was relatively dark, resulting in the footage is very noisy and does not have enough tracking points for 3D tracking. Our camera movement made it even harder, and the tracking camera was always in the wrong direction in Nuke. 

Besides, I used Nuke for 3D VFX while my teammate used After Effects for 2D VFX, which resulting a difference in timing.

Solutions

After trying multiple tests using different settings, I used “rotation only” instead of ‘free camera”, which is able to form a complete point cloud. But it was not fully

accurate, which made the background shadow matte keep shifting. In the end, I tried to cover it through editing.