I have been using the Sebastian’s tutorials, but I need a slightly different “spin” on things: is it possible to track a moving object (only) from a static camera, i.e. no movement relative to the environment.
The application is to be able to track and eventually rig a face - but in a more static camera environment, say like the equivalent of characters in a studio.
I fully appreciate that the face will not have total freedom of movement, else some of the markers will be lost, but I want to move one step beyond the typical rigid, static faces.
1) I tried by letting the camera track the static background. Next, I tracked a moving face. Other than the background, I only seem to be able to get a bunch of face object empties out - but they are all in one plane (i.e. perpendicular to the camera). That is going to complicate rigging a face too much…
2) Next, I tried by cheating: to track only the face with the camera (instead of the face as a moving object in a static environment). Apart from the the camera solving providing me static points for the face with a moving camera (I understand why), I ended up the the following problems:
- The depth of the control points in the scene were inverted: e.g. the nose tip point was furthest back
- The scale along the camera Z-axis was far too long, i.e. the face would have to be VERY “deep”
The one thing I have not done (I’m trying to avoid it), is to start off by having the face inside an environment while the camera is moving… and then carefully put the camera and tripod down… and then to capture the face movement. (But I am trying to avoid moving the camera at all)
Can anybody help?