基于山体轮廓匹配的相机空间定位方法研究

Camera Parameter Recovery by Matching Image Contour Lines of Hills

相机空间定位是一个经典问题。本文提出了一种匹配山体图像轮廓线的相机空间定位方法。这种方法可以在没有标定物的情况下 ,利用已有的地理信息进行相机的空间定位。实验证明 ,该方法可以发展成为一种行之有效的计算机辅助空间定位工具。

Camera positioning is a classical problem. The basis of camera positioning is to acquire the real time robot spatiak knowledge, a set of parameters to represent a spatial position, from a photograph or a series of image frames taken by the camera. The crcuial problem is that in wild environment, especially mountain area, there may be no reference object set in advance. Fortunately, in most cases, the image contour line, which segments the sky background and mountain, can be easily fetched from those photographs. Also the DEM data of the same area can be obtained by other approaches. This paper gives a method of camera positioning by matching the image contour line of the hills and the contour line constructed from the known DEM data. This method can position the camera without any reference object by means of the known geographical information. It has been proved that the method can be the basis of computer aided camera parameter recovery tool.