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Hello everyone!
Recently I am interested in composting of stereoscopic footage.
Single most important information for me is how to put 3d CG objects within stereo space. I`m looking for a way to create a “continuity” of 3d stereo depth – the depth of 3d CG elements, and that of a film footage. There is no conversion included – the film footage was shot in stereo3d.
I’m using Nuke and Ocula – I’ve got a few ideas of my own, but I want to start from the right place, so I will not ruin a workflow of a whole project.
I generated a Nuke Point Cloud – so I can more easily put CG objects within specific parts of a scene. Then I move the 3d stereo rig into the scene with appropriate scale – so there should be no errors of stereo base or data about cameras or lenses. Unfortunately (I think) this will not work with a scene where there is a lot of motion(of actors and other objects). The same apply to slow or static camera movements.
Last idea is use Ocula Solver and create a disparity map, which gives us an “model” of depth. The question is, how to work with this tool? Also, how to match the scale of a scene to camera? Maybe by using the data from the analysed shot, we can create 3d rig with paramaters equal to that of “real” cameras.
Thank you for any kind of hint or help!
@MCR 43545 wrote:
Hello everyone!
Recently I am interested in composting of stereoscopic footage.
Single most important information for me is how to put 3d CG objects within stereo space. I`m looking for a way to create a “continuity” of 3d stereo depth – the depth of 3d CG elements, and that of a film footage. There is no conversion included – the film footage was shot in stereo3d.
I’m using Nuke and Ocula – I’ve got a few ideas of my own, but I want to start from the right place, so I will not ruin a workflow of a whole project.
I generated a Nuke Point Cloud – so I can more easily put CG objects within specific parts of a scene. Then I move the 3d stereo rig into the scene with appropriate scale – so there should be no errors of stereo base or data about cameras or lenses. Unfortunately (I think) this will not work with a scene where there is a lot of motion(of actors and other objects). The same apply to slow or static camera movements.
Last idea is use Ocula Solver and create a disparity map, which gives us an “model” of depth. The question is, how to work with this tool? Also, how to match the scale of a scene to camera? Maybe by using the data from the analysed shot, we can create 3d rig with paramaters equal to that of “real” cameras.
Thank you for any kind of hint or help!
The workflow isn’t that different to a mono shot.
You need to do a full camera solve and matchmove from the stereo footage. That will generate the 3D scene with two cameras, equivalent to the cameras that shot the footage. Once you have that setup you can render the CG objects through those cameras and composite them into your shot. You will need to think about lens distortion and differences between the two plates caused by the stereo camera rig.
I don’t quite understand how you were hoping to do this with a full match move.
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