Fusaomi Nagata, Shingo Yoshimoto, Tatsuhiko Sakamoto, Takamasa Kusano, Keigo Watanabe, Preprocessor with Spline Interpolation for Converting Stereolithography into Cutter Location Source Data, IOP Conference Series: Earth and Environmental Science, Vol. 69, pp. 1-9, 2017 International Workshop on Advanced Algorithms and Control Engineering (IWAACE 2017), Bangkok, Thailand from March 10th to 12th, 2017, Invited keynote speech.