Abstract: Precise location of object in monitor image is based on the transformation image coordinate and world coordinate. By the reasons of practical application such as allocation of monitor, the parameter of the transformation is difficult to get. In this paper, a method of perspective transform based on double vanishing point is proposed, which is able to transform image coordinate into world coordinate by analyzing the locations of four control points. Experimental results show the method is reliable and valid.

Key words: double vanishing point, perspective transform, image processing

摘要： 对监控场景中目标的精确定位，需要进行图像坐标系与世界坐标系之间的转换。而在实际应用中，由于安装因素等原因，难以获取摄像机的图像坐标系与世界坐标系之间转换的参数。提出一种基于双灭点的图像透视校正方法。通过分析世界坐标系中4个控制点在图像坐标系中的位置关系，实现透视投影下图像坐标系与世界坐标系之间的转换。实验结果证明该方法简便实用。

关键词: 双灭点, 透视变换, 图像处理

CLC Number: 

• TP391.41