Improving Registration Accuracy of AR with Non-linear Camera Model

Registration is one of the key techniques of augmented reality (AR) system. Recently, a registration method based on fundamental matrix is presented. This method needs neither auxiliary instruments nor man-made markers, therefore it has wide adaptability. But it´s registration accuracy needs to be improved. With Tsai algorithm this paper introduce non-linear camera model and correct the image feature points to the ideal position. Then the feature points corrected is applied to the registration method based-on fundamental matrix. The result of experiment shows that the new method can get better accuracy than the primary registration method