求翻译：人脸检测是人脸分析的首要环节，其目的是确认图像中是否存在人脸，如果存在就对人脸进行定位。人脸检测在基于内容的图像与视频检索、视频监控、自动人脸识别以及智能人机交互等方面有着重要的应用价值。是什么意思？

Face detection is the face of the first link, which aims to confirm whether there is a face in the image, if it exists on the face positioning. Face detection has important applications in content-based image and video retrieval, video surveillance, automatic face recognition and intelligent human-c

Face Detection is a face analysis of the primary key, and its aim was to identify whether there are people in the image, and if there are face to face to locate it. Face Detection in content-based%