And with head tracking available, placement options are increased: the UI can be placed to the user's side, or above the normal line of sight, for instance.

由于具有头部跟踪可用，需要增加放置选项：比如，UI可以放置到用户的一侧，或在正常视线之上。

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To correct this stop the extra lateral head tracking movement and insist on a reference point farther ahead.

纠正的方法是停止过多的头部平行跟踪移动，坚持更靠前的参考点。

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The worldwide research status of head tracking is introduced and the works made in the research of the predictive algorithm and in the exploration of the rule of the head tracking are set forth.

介绍了头部跟踪技术的研究动态，阐述了对头部跟踪规律的探索以及在预测算法的设计上所做的工作。

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Head-tracking ensures the position of the player and sends the virtual ball into the right area of the net with each movement.

FORBES: Connect

The head-tracking system, which was developed by the Fraunhofer Heinrich-Hertz Institute in Germany, works by calculating how far away a head is, based on its apparent size (the direction is obvious, of course).

ECONOMIST: Monitor

The company is also (without DFKI) developing a virtual reality environment that uses a pair of active-shutter glasses and a head-tracking camera to let you wander around cave-like structures from the comfort of the lab.

ENGADGET: 'Talking Places' is the Google Glass of tour guides, we go hands-on (video)