The Journal of the Society for Art and Science Cover sheet for paper submissions ¡ Paper Types (choose one) EOriginal Full Paper ¡ Paper Fieldichoose onej 2) Science/Technology ¡ Categoriesichoose one or morej a-1) Computer Graphics (Modeling) b-4) Computer Graphics Systems ¡ Special Issue Correspondence (choose onej ESubmission for a Special Issue (Name: NICOGRAPH 2014) ¡ Title Feature-Preserving Simplification of Point Cloud by Using Clustering Approach Based on Mean Curvature ¡ Author(s) Xi Yang (Non-Member) Katsutsugu Matsuyama (Regular Member) Kouichi Konno (Regular Member) Yoshimasa Tokuyama (Regular Member) ¡ Author Affiliation(s) Graduate School of Engineering, Iwate University Faculty of Engineering, Tokyo Polytechnic University ¡ Author E-mail Address(es) yangxi—lk.cis.iwate-u.ac.jp ¡ Name, Address, Affiliation, Telephone number, Fax number, and E-mail Address of the Contact Person Xi Yang, Iwate University, 090-1370-1203, , yangxi—lk.cis.iwate-u.ac.jp ¡ Abstract (approx. 100 words) For point cloud data obtained from 3D scanning devices, excessively large storage and long post-processing time are required. Therefore, it is very important to simplify the point cloud to reduce calculation cost. In this paper, we propose a new point cloud simpli cation method that can maintain the characteristics of surface shape for unstructured point clouds. In our method, a segmentation range based on mean curvature of a point can be controlled. Simpli cation process is completed by both keeping the representative point and removing the represented points within the range. Our method can simplify an object highly simpli ed rate with preserving the form feature. Applying the proposed method to 3D stone tool models, the method is evaluated precisely and effectively. ¡ Keywords (around five) Point Cloud, Clustring, Mean Curvature, Simplification