3D Compositing with Action > Action: Analyzer >
Preparing to Analyze

A good analysis result is often footage dependant, therefore you may need to perform object tracking after the initial camera tracking.

Here are some things to keep in mind that can improve your analysis:

- The Analyzer works best when tracking an image sequence that has a moving camera or environment. Masks should be used to isolate the background and the objects in the scene that have different motions. Masking objects cause them to be ignored in the tracking process. You should also mask any logos or watermarks in your image sequence.
- The analysis is based on point-like and corner-like image features. Balls, spheres, lines, and smooth surfaces are not considered.
- Crop out any black areas around your image (such as letterbox areas). When cropping, it is very important to keep the optical centre of the image in the centre, that is, the crop should be symmetrical in both dimensions.
- 3D tracking analyses each frame extensively and with high resolution clips, the process can be lengthy. Unlike 2D tracking, however, you are not required to analyse full-resolution clips. In many cases, analyzing proxies will produce acceptable 3D tracking results quicker than the time that would be required for the full-resolution clips.
- If you have information about the camera that shot the scene you want to track, such as the focal length of the lens and the film back size, you can specify these details to help the tracking analysis.