A New Calibrating Method of Camera External Parameters
In order to make more accurate intersection measurement on aircraft attitude,a new calibrating device of external parameters is proposed to obtain the parameters of the camera.Firstly,the coordinates of the circular markers in the world coordinate system can be obtained by high-precision total station.Secondly,after getting the bar's image by the photographic measuring instrument,the coordinates of the circular markers in the image coordinate system can be computed by high precision ellipse fitting.And then,the rotational matrix and translation vector between the world coordinate system and the image coordinate system can be computed in case of camera intrinsic parameters.The verification experiment shows that the average distance error between adjacent points is 0.128 8 mm.
camera calibrationexternal parametercalibration bar
NETL
NSTL
万方数据
维普
