Camera self-calibration from ellipse correspondences
Ruochen Hu, Qiang Ji · 2002
We introduce a new technique for camera self-calibration using ellipse correspondences. Based on an analysis of ellipse matches between the images obtained from the same viewpoint but with different and unknown view directions, our approach estimates the intrinsic camera parameters. We present both linear and nonlinear solutions to recovering intrinsic camera parameters. The algorithm's performance is validated extensively using both synthetic and real image data. Compared with similar techniques but using points, we observe a comparable performance. The use of ellipses, however, greatly simplifies feature matching between images, improves matching accuracy, and avoids mismatch.