Graphics Reference
In-Depth Information
Figure 10-22
Grid display in Distortion mode
Once you have your scene tracked to a sane solve error, you can try to whittle it down to an optimal value.
For the scene in the example, I was able to get the error down to only about 1.5 pixels by tweaking values. As a
last step I went in and simply deleted the tracks with the highest error rates, getting the total down to less than
0.5 pixels.
Problems can creep in at any point in the process, so the first couple of tries tracking scenes might take a lot
of tweaking. The tips in this section should help you get a well-tracked scene with a little effort.
Setting Up the Scene in 3D
The next thing to be done is to create the basic scene in 3D. This is very simple, because Blender has a built-in
mechanism to do it for you. You'll find what you need on the Clip panel shown in
Figure 10-23
.
With your
camera selected, click Set As Background to put the clip into the 3D viewport background; then click Setup
TrackingScenetocreatea3Dscenethatmatchesyourtrackedscene,completewithtrackedcamera,foreground
and background 3D objects, and the appropriate composite node setup.
Figure 10-23
The Clip panel
