Each track anchor consists of a pattern and search area:
• Pattern - the target pixels tracked across multiple frames. This pattern should be as distinct as possible from the surrounding frame and remain visible throughout the majority of the sequence.
• Search - the area of the current frame in which the pattern is likely to be found in the next frame. Large search areas can affect performance.
| 1. | Drag the crosshair in the center of the anchor over the pattern to be tracked or manually adjust the track_x and track_y fields in the Tracks list. |
In the example, the corner of a building is directly under the crosshair.
NOTE: You can enable Settings > snap to markers to assist you when placing anchors.
NOTE: Whether you select blobs or corners, a guide displays in the Viewer as you drag the anchor, highlighting likely patterns.
Release the mouse to snap the anchor to the marker.
| 2. | Adjust the pattern and search areas as required using the following methods: |
• Click and drag the boundaries to adjust on a single axis. For example, dragging a vertical boundary adjusts the area on the x axis.
• Click and drag the corners of the boundaries to adjust on both axes. Hold Shift, click and drag to scale the area.
NOTE: Hold Cmd/Ctrl to adjust boundaries asymmetrically, that is, irrespective of the anchor position.
| 3. | Reset the pattern and search areas by clicking  in the Viewer tools. |