利用相关系数改进的光束法平差相机检校

Camera Calibration of the Bundle Method Improved by Correlation Coefficient

由于非量测相机价格便宜、易于携带等优点,它已成为近景摄影测量的主要工具。相机检校是摄影测量中至关重要的一步。通过求解标准检校影像与非量测相机所拍影像间的相关系数的大小,可以确定相机的镜头畸变严重程度。以相关系数作为光束法平差的迭代条件对其进行改进,可以提高光束法平差的精度,得到更为精确的相机畸变参数。

At present, the non-metric camera has become a major tool of close-range photogrammetry because it's economicaland it's easy to carry. Camera calibration is essential in photogrammetry. By solving the correlation coefficient between the stan-dard calibration image and the image taken by the measuring camera, the Lens distortion of the camera can be determined. Usingthe correlation coefficient as the iteration condition of the bundle adjustment, the adjustment results can be more precise and thecamera distortion parameters can be more precise,too.