对固定镜头下视频序列中运动人体的检测和跟踪方法进行研究，利用灰度图像差分双向投影信息检测人体目标，提出一种基于统

计运动区域几何特征固定比例的分割算法，使用最近邻匹配方法对人体进行跟踪。-Video sequences in the detection and tracking of the movement of the human body to study under the fixed lens, bi-directional projector information using gray-scale image difference detection of human targets, segmentation algorithm is proposed based on a fixed proportion of the statistical motion region geometric features, using the nearest neighbor matching method human body tracking.