Tracking method, head-mounted display device and camera tracker

Abstract

A tracking method include following steps. In response to a tracking lost event occurring on a camera tracker, a tracker tracking data is transmitted from the camera tracker to a head-mounted display device. The tracker tracking data include a tracker current frame captured by the camera tracker. The head-mounted display device compares the tracker tracking data with keyframes stored in the head-mounted display device to identify a target keyframe similar to the tracker tracking data. A relocation prompt is generated according to a frame-wise difference between the tracker tracking data and the target keyframe. The relocation prompt is displayed on the head-mounted display device.

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