Join Lee Lanier for an in-depth discussion in this video Applying artwork to a tracked null, part of VFX Techniques: Building Replacement with After Effects.
We've created a whole bunch of 3D tracking points which you can see right here.…And you'll see these as long as the 3D Camera Tracker effect is highlighted in…the Effects Controls panel.…So let's do something with these points.…Our first task is going to be to attach a billboard to this side of the…building in the foreground.…So what we have to do is select some points and then attach a null to that.…Again, there is two ways to select points;…manually where you click them or simply by dragging your mouse until you get a…target between sets of three.…
Now again the target needs to line up in such a way that it looks like it has a…correct perspective.…So you can see that some of these points are not so good and some are better.…Now in fact these three right here, if I zoom in, you can see make a good…target that looks like it's on the side of building.…And in fact this is a great place to put that billboard.…So once you have these three points highlighted or a three similar points, you…can go ahead and click that will highlight them so they turn yellow.…
Learn how to track the footage with the Adobe After Effects 3D Camera Tracker, replace areas such as the sky, rotoscope moving elements such as buildings and cars, and integrate a digital matte painting so it gains appropriate shifts in perspective and scale. You'll also apply color-grading techniques and learn how to fabricate reflections. The course also covers an alternative motion-tracking workflow with the Foundry CameraTracker plugin.
- Using the After Effects 3D Camera Tracker
- Applying tracking data to 3D layers
- Constructing and refining motion graphics
- Keying out the sky
- Rotoscoping to remove and save features
- Using the Foundry CameraTracker plugin
- Creating reflections
- Color grading