In this lesson we talked about the different ways to track points and clean after acquiring the camera.
Cleaning steps
- Denoise plate
- Track + Create 3d SCENE
- Select best frame to create clean plate
- Paint out the element you need to remove
- Roto the area around the paint to create a patch
- Premult the patch
- Frame hold the reference frame with framehold node
- Project patch via Project 3d node
- Connect camera pipe of project3d node to a frame hold of camera/projector
- Make sure the frame hold used for the patch is the same used for the camera/projector
- Connect the projector3d node to a card or geometry
- Pipe the card to the scene and render out via scanline render
- Regrain after the scanlinerender before merging over original plate
- Play around with samples in scanline render to match motionblur
Four way to clean
1.3d patch – textured card
Simply create a card in the scene and attach the content to the card and pre-multiply it
2.3d patch – project on mm geo
A reference frame is determined, then the content of the reference frame is used to make roto and then the processed content is attached to the card and finally put back into the active camera
3.3d patch – project roto
The project is placed directly on the 3d card, combined with the camera to get a relatively stable shot, and then roto is done on this shot, making roto more stable and easier and faster. Then get this specific part of the process by putting it back on the whole scene.
4.3d patch – project UV
What makes this method different is that it places part of the shot on the background by way of a uv, and then the rest of the operation is pretty much the same.