说明：  人脸检测及跟踪是属于计算机视觉与模式识别研究领域的一个重要分支，它作为人脸信息处理中的一项关键技术，在基于内容的图像与视频检索、视频监控与跟踪、视频会议以及智能人机交互等方面都有着重要的应用价值。
(Face detection and tracking is a computer vision and pattern recognition research area an important branch of facial information as a key deal with technology, content-based image and video retrieval, video surveillance and tracking, video conferencing and intelligent areas such as human-computer interaction have important application value.)