常见的目标检测方法主要有光流法，帧差法和背景模型法。光流法利用背景和运动目标的运动速度不同进行目标检测，计算量较大；帧差法对连续几帧图像的背景进行配准，通过前后帧的差分图像分离出运动物体；背景差法根据已知背景对图像进行差分，在运动背景下需要对背景模型进行更新。-Common target detection methods are mainly optical flow method, fr a me differential method and background model method. Optical flow method with different background and moving target movement speed target detection, large amount of calculation　In successive fr a mes image fr a me differential method for registration, the background of moving object was isolated through front and rear fr a me difference image　Background difference method based on the background of image difference known, under the background of sports need to update the background model.