TY - CPAPER DO - 10.22260/ISARC2003/0075 SN - 2413-5844 PY - 2003 DA - 2003/09/24 AU - Lee, Sang Heon TI - High-Speed Visual Measurement System of Pile Penetration and Rebound Movement for Construction T2 - Proceedings of the 20th International Symposium on Automation and Robotics in Construction ISARC 2003 -- The Future Site PB - International Association for Automation and Robotics in Construction (IAARC) ED - Van Gassel, Frans SP - 435 EP - 441 L1 - https://www.iaarc.org/publications/fulltext/isarc2003-46.pdf ER -