pollhost.blogg.se - Blender 3d tracking

#Blender 3d tracking movie
#Blender 3d tracking professional

The tracks for any given point of interest are named the same across all the videos.Your videos has been tracked - there are virtual markers in Blender tracking each real world point of interest on your target.The Blender cameras are calibrated with respect to focal length and sensor size.There are the same number of Blender cameras, positioned in the same orientation and relative position.The videos from all camera angles are synchronized and begin at the same point in real time.The videos are shot from two or more non-moving cameras facing the target at different angles.The operator is accessible via View3D > Object > Resolve Camera Tracks, or Search > Resolve Camera Tracks. These can now be used for animation for example, as hooks for a rig. You should now have a set of Empty objects that track in 3D the locations of the real-world markers.Select all the generated empties, and invoke View3D > Object > Resolve Camera Tracks.

#Blender 3d tracking movie

For each video, select all the tracks and use Movie Clip Editor > Reconstruction > Link Empty to Track, making sure they are associated with the correct Blender camera.In Blender, track the points of interest using the motion tracker, ensuring the camera settings such as focal length are set to the same as the real cameras, and that tracks for any given feature have the same name across all videos.Ensure the video footage from all cameras match up in real time.Synchronize and trim the video footage from all cameras with a video editor such as Avidemux, or do this within Blender.Begin the performance near the reference point, ensuring that points of interest are visible to the cameras as much as possible.This doesn't have to be at exactly the same time, but they do need to be matched up later. Move the Blender cameras so that they are at the same location and orientation relative to the virtual reference point as their associated real cameras.Measure and record the location and orientation of each real camera relative to the reference point.These values can often be found online by searching for the camera model online, or in the camera user manual. In Blender, add the same number of cameras, and set their properties such as sensor size and focal length to the same values as the real-world cameras.For two cameras, the best setup is having the cameras facing 90 degrees to each other. Set up two or more cameras facing the reference point.

Pick a point in Blender as the virtual reference point.

This is the center of the stage, so to speak.

In the real world, mark a point on the ground as the real reference point.

The following is a recommended workflow for working with the addon:

Check the checkbox at the top right of the entry, beside the running man icon.Īlternatively, run the script from within a Text Editor window.

The addon entry should appear in the user preferences window.

In the resulting file browser pane, select Resolve Camera Tracks.py.

Press "Install from File." at the bottom of the window.

Open the User Preferences window (Ctrl + Alt + U) to the "Addons" tab.

The process is the same as any other Blender addon: With the 3D tracked data, we can control rigs, reconstruct scenes, and greenscreen with better accuracy than ever before. Essentially, it takes 2D motion tracks from two or more camera recordings at different angles, and combines them into 3D motion tracks. This addon adds the ability to resolve tracking points made from multiple cameras together into a single scene.

#Blender 3d tracking professional

To get around this, professional tracking setups use multiple cameras recording the same scheme from multiple angles. However, there are limits on the quality of the 3D tracking done from only one camera angle. Workflow Exampleīlender's standard 2D and 3D tracking is pretty effective at what it was designed to do. Addon for Blender implementing 3D point reconstruction using multiple camera angles.