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Version: Traxis Camera Tracking 2.3

Overlay Text Indicators

Overlay Text

The overlay text indicators are useful when the PC monitor is positioned far from the camera, and a secondary display (such as a TV or monitor connected through DeckLink output) is used for calibration.

The abbreviations shown in the overlay are defined as follows:

  • FL (Focal Length): The distance between the lens and the image sensor when the subject is in focus.
  • FO (Focal Length Offset): A calibration adjustment applied to the focal length for fine-tuning accuracy.
  • NO (Nodal Offset): The spatial offset between the lens’s optical center and the tracking reference point.
  • K1 (Distortion Coefficient K1): The primary value controlling the amount of radial lens distortion.
  • K2 (Distortion Coefficient K2): The secondary value refining the radial distortion curve for better precision.
  • CX (Center Shift X): Horizontal shift of the optical center relative to the image sensor’s center.
  • CY (Center Shift Y): Vertical shift of the optical center relative to the image sensor’s center.
  • FoV (Field of View): The extent of the observable scene captured by the camera, determined by the focal length and sensor size.
  • FoV ef. (Effective Field of View): The effective viewing angle calculated after accounting for lens distortion and center shift.