[IEEE Proceedings. 1998 IEEE/RSJ International Conference on Intelligent Robots and Systems. Innovations in Theory, Practice and Applications - Victoria, BC, Canada (13-17 Oct. 1998)] Proceedings. 1998 IEEE/RSJ International Conference on Intelligent Robots and Systems. Innovations in Theory, Practice and Applications (Cat. No.98CH36190) - Three-dimensional circle detection and location of pipe joints for bin-picking tasks