1. Fitting ellipses and general second-order curves;Agin,1981
2. Representation of digitised contours in terms of conic arcs and straight-line segments;Albano;Computer Vision, Graphics, and Image Processing,1974
3. Computer Vision;Ballard,1982
4. A RANSAC-based approach to model fitting and its applications to finding cylinders in range data;Bolles,1981
5. Fitting conic sections to scattered data;Bookstein;Computer Vision, Graphics, and Image Processing,1979