摄像机运动下基于背景匹配的运动目标检测  

Moving objects detection based on background matching under moving camera

作　　者：贺琴[1] 潘建寿[1] 刘继艳[1] 

机构地区：[1]西北大学信息科学与技术学院,西安710127

出　　处：《计算机工程与应用》2010年第24期179-181,184,共4页Computer Engineering and Applications

基　　金：陕西省自然科学基金(No.FA0306)~~

摘　　要：提出一种摄像机运动下的运动目标检测技术。首先获取相邻两帧图像上的对应特征点的坐标后应用到仿射变换模型得到全局运动参量来描述背景图像的运动变化。然后根据估计出的全局运动参量通过双线性内插法完成背景匹配。最后采用背景匹配后的两帧图像差进行目标检测。实验证明本算法在提高处理的精确度和时效性的同时还可以处理摄像机发生较大幅度旋转运动情况下的目标检测。A detection algorithm of moving objects under moving camera is presented.Firstly,select feature points from two adjacent pictures and put their coordinate in affine transform mode to get global motion vector discribing the moving background.Secondly,use this affine model to match the two adjacent frame backgrounds.Finally,perform a subtraction between these two matched adjacent frame backgrounds for detection of the moving object.The algorithm is not only superior to original algorithms in velocity and accuracy but also can deal with larger rotational moving of the camera.

关 键 词：HARRIS算子 改进型的圆形块匹配运动搜索 鲁棒分析 Levenberg-Marquardet算法 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]