Live Tracking

Computes a tracking stream from markers visible on an image stream.

Input

A single stream of image data.

Output

A tracking stream or streams are added as children to the input image stream.

Description

This algorithm creates a special tracking stream that tries to detect the markers on each incoming frame of the input image stream. It then uses these to estimate the pose of the camera that acquired those images and feeds this information into its matrices.

K and Dist are the intrinsics and the distortion parameters of the camera capturing the input image stream. When the input image stream has a camera calibration data component, these parameters are filled from it, and they can be overriden if the Override intrinsics is checked.

For the various kinds of markers supported and the settings when trying to detect them, see the marker configuration controller.

The Compute button attaches a tracking stream as a child to the input image stream.

If the Keep open checkbox is checked, the algorithm will remain open after the Compute button is pressed. Otherwise, the algorithm will automatically close. It might be useful to keep the algorithm open if a user desires to create another tracking stream with different marker settings.