Circular Coded Target and Its Application to Optical 3D-Measurement Techniques. - Sung Joon Ahn; Wolfgang Rauh (DAGM-Symposium, 1998)

Least Squares Fitting of Circle and Ellipse. - Sung Joon Ahn; Wolfgang Rauh; Berend Oberdorfer (DAGM-Symposium, 1998)

Ellipse fitting and parameter assessment of circular object targets for robot vision. - Sung Joon Ahn; Wolfgang Rauh; Matthias Recknagel (IROS, 1999)

Circular coded landmark for optical 3D-measurement and robot vision. - Sung Joon Ahn; Wolfgang Rauh; Matthias Recknagel (IROS, 1999)

Geometric Least Squares Fitting of Circle and Ellipse. - Sung Joon Ahn; Wolfgang Rauh (Int. J. Pattern Recognit. Artif. Intell., 1999)

Least Squares Orthogonal Distance Fitting of Implicit Curves and Surfaces. - Sung Joon Ahn; Wolfgang Rauh; Matthias Recknagel (DAGM-Symposium, 2001)

Circular Coded Target for Automation of Optical 3D-Measurement and Camera Calibration. - Sung Joon Ahn; Wolfgang Rauh; Sung Il Kim (Int. J. Pattern Recognit. Artif. Intell., 2001)

Least-squares orthogonal distances fitting of circle, sphere, ellipse, hyperbola, and parabola. - Sung Joon Ahn; Wolfgang Rauh; Hans-Jürgen Warnecke (Pattern Recognit., 2001)

Fitting of Parametric Space Curves and Surfaces by Using the Geometric Error Measure. - Sung Joon Ahn; Wolfgang Rauh; Engelbert Westkämper (DAGM-Symposium, 2002)

Orthogonal Distance Fitting of Implicit Curves and Surfaces. - Sung Joon Ahn; Wolfgang Rauh; Hyung Suck Cho; Hans-Jürgen Warnecke (IEEE Trans. Pattern Anal. Mach. Intell., 2002)

Geometric Segmentation and Object Recognition in Unordered and Incomplete Point Cloud. - Sung Joon Ahn; Ira Effenberger; Sabine Roth-Koch; Engelbert Westkämper (DAGM-Symposium, 2003)

Least Squares Orthogonal Distance Fitting of Curves and Surfaces in Space - Sung Joon Ahn (Springer, 2004)

Geometric Fitting of Parametric Curves and Surfaces. - Sung Joon Ahn (J. Inf. Process. Syst., 2008)