Precisely Correct Radial and Oblique Distortionof Camera Image
精确校正图像的径向畸变和倾斜失真

There are radial and oblique distortion in the digital images obtained using the digital camera(DC) in geometric measurement.In this paper,an algorithm to correct the oblique and the radial distortion of the digital image obtained by DC is proposed.Firstly,the oblique distortion model and the radial distortion model of the digital image are established respectively.The union distortion model of the objective image is then derived based on these two individual models.The algorithm to correct the union distortions model of the objective image is designed based on the Least Squared Methods and optimal algorithm,and the distortion parameters of the objective image are obtained from a standard gridding.These distortion parameters are then applied into correcting distortion of the objective image taken in the same condition.The experimental result shows the proposed algorithm could successfully correct the union distortion of the digital image.