432-0012-00-10 Version 110
June 2016
33
6
Video Tracking Mode—M400XR only
Overview
To enable Video Tracking mode press the right joystick button and manually center the target in
the acquisition gate by pointing the camera using the joystick. Press the right joystick button again
to engage the target and begin tracking. When a target is selected, the acquisition gate is no
longer shown and the Tracking icon is shown on the display.
Acquisition is easiest when the target has clear contrasts, rigid edges, and a predictable rate of
motion. For example, it is easier for the system to track a boat in the open ocean than when the
shoreline is in the background because the boat has a clearer contrast.
The tracker uses a gray scale frame from either the IR or the visible camera. The visible camera
color frame is converted to a gray scale frame for the tracker. Because of this conversion, what is
seen on the visible camera as very distinct, may sometimes appear less so to the tracker.
Once a target is being tracked by one of the cameras, that camera will continue to provide video to
the tracker even if the active camera is changed. In other words, a target can be tracked using the
IR camera while the visible camera video is being shown. If the target is lost (acquisition gate
reappears), manually reacquiring the target will begin tracking using the current active camera.
Consider the following in order to maintain an active tracking session:
• Very fast turns by the target that change the aspect ratio of the target may cause confusion
• Very fast turns by the tracking vessel or heavy swells may challenge the ability of the
camera to keep the target in view. Stabilization modes are recommended.
Acquisition state
—Use the joystick to move the camera. Zoom in to more clearly focus on the
target and initiate tracking by pressing the right joystick button.
Acquisition
gate
Figure 6-1: Video Tracking Mode—Acquisition state
Joystick Buttons: Left - Exit Video Tracking mode
Right - Acquire target, engage tracking
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