说明：  本文演示了如何使用适用于Windows SDK的Kinect的人脸跟踪，人脸跟踪。它提供了代码示例，以及如何调用它的API来获取，人脸追踪引擎最有用的小技巧
(This article demonstrates how to use the Face Tracking SDK in Kinect for Windows to track human faces. It provides code samples as well as useful tips on how to call its APIs to get the most out of the face tracking engine)