EMSI Video Tracker

The video below shows an example of the EMSI Video Tracker tracking an aircraft with a blue sky background. The tracker is operating in a gated video tracker mode. The target gate is the red rectangle. Only pixels within the current target gate are considered as potential target pixels. There is another "background gate" that surrounds the target gate. This background gate is not drawn on the video. Pixel intensities and colors that exist in the background gate are excluded from consideration as potential target pixels in the target gate. Note that the video commences with the target aircraft being approximately one-half the size of the video frame. Many other video trackers have difficulty tracking targets when they are this large. Toward the middle of the video the target moves around quite rapidly. Despite this rapid movement, the EMSI Video Tracker successfully follows the target. Note that our target gate rapidly resizes. We sense rapid target movement and quickly enlarge the target gate in the direction of target motion. This is critical because if target pixels extend into the background gate, the gated video tracker will exclude them from consideration as target pixels.

Target pixels are highlighted in the video on the right. Target pixels are not highlighted in the video on the left. Note that the green cross indicating the target centroid follows the target in a very stable manner. Many competing trackers exhibit a target centroid jitter that is caused by the presence of extraneous false target points within the target gate. We have virtually eliminated this centroid jitter within the EMSI Video Tracker.