摘要
针对视觉跟踪中运动目标的大小随时间改变这一问题,提出一种基于PTZ相机光学投影的自适应窗口目标跟踪方法。当PTZ相机转动时,目标在监控画面中的大小随之变化,而目标的大小实际没变,物体在水平面上投影的尺寸和它在图像中的尺寸成反比关系。据此,将实际物体三维投影到图像中,使用投影的方法解决一类特定条件下自适应跟踪框问题。实验结果表明,当运动目标的实际大小变化不大时,自适应跟踪框可以精确地标出目标。
This paper presents an adaptive target tracking method based on optical projection on the PTZ camera.The object size in the image varies while the PTZ camera moving,however,the real object size is invariable,and the projection size on the horizontal of the real object is inversely proportional to the size of the object in the image.Therefore,we project the real 3D object to the image to achieve the adaptive window problem in object tracking algorithm.Experimental results demonstrate that this method can figure out the size of the object more accurately.
出处
《计算机与现代化》
2013年第9期86-90,共5页
Computer and Modernization
关键词
自适应跟踪框
目标跟踪
投影
adaptive window
target tracking
projection
