
Using After Effect 3d tracking and
photoshop stamp tool to key out the unwanted materials.

Before

After
I found that it's much easy to key out with 3d tracking and camera solve. As the result we can replace the "new clean wall"(which work in PS instead of AE) as apart of the world in the camera. In 3d tracking, we can input the focus length of the len we have used to provide After effect more information to have a more accurately result of camera solving. It also remind me the importance of camera report!!!
and this is the final result:
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