You can adjust the tracking results in several ways.
To add smoothing to the plane:
| 1. | Check enable jitter smoothing to allow PlanarTracker to detect jitter around the planar surface corners and smooth it out. This is good for improving your results with slight smoothing, applying heavy smoothing may produce unexpected results. |
| 2. | Adjust smoothing amount to control how much jitter control is applied to the planar surface corners. Zero value disables jitter smoothing, value of 1 applies maximum smoothness. |
Sometimes your tracking results may need some tweaking before you’re happy with them, you can do this on the Tracking tab in the PlanarTracker properties panel.
| 1. | Have a look at your tracks before and after tracking. Check: |
• Preview Features - check to preview features that are to be tracked. Preview comes in handy when you want to tweak the tracking parameters further before tracking.
• Display Feature Tracks - check to show the resulting tracks after tracking.
| 2. | Adjust the way tracking features are placed. Set: |
• Number of Features - define the number of features you want to track in each frame. The default is 100 features. In difficult sequences to solve, consider using higher number of features.
• Detection Threshold - set the distribution of features over the input image. If you enter a low detection threshold value, features are tracked evenly on all parts of the image, and you may get more accurate results. For example, for flat blurry areas even a value of 0.005 may be useful. Use Preview Features to preview your features before tracking.
• Feature Separation - set the distribution of features in relation to each other. To force feature separation and spread features evenly over the image at even distances, enter a high feature separation value. If you’re working with footage where you’re tracking a very small object, or one with thin structures, a feature separation value of around 3 or 4 may be useful.
• Refine Feature Locations - check to refine the detected features by locking them onto local corner points.
| 3. | Adjust the tracking process. Set: |
• Track Threshold - set a threshold value between 0 and 1. This threshold controls how similar features look over a number of frames. You can adjust this value to test whether a track is reliable.
• Track Smoothness - set the threshold for smooth track generation. Adjusting this value can be useful in preventing poor tracks in complex sequences. Increase the smoothness value to remove tracks that glitch over time.
• Track Consistency - set the threshold for consistent track generation. Increase this value to ensure track motion is locally consistent. Adjust consistency to prevent poor tracks in complex sequences.
| 4. | Use the Principal view dropdown to select the view you want to use if you’re working in a stereo project. |