Information Visualization Treecube+3D-ViSOM (by Seiji Okajima, et al., since 2007) Combinational Visualization Tool for Browsing 3D Multimedia Data of Treecube and 3D-ViSOM 3D-ViSOM (by Hirokazu Notsu, et al., since 2005) 3D Multimedia Data Visualization Tool Using SOM (Self-Organizing Map) Treecube (by Seiji Okajima, Yoichi Tanaka, et al., since 2002) 3D Multimedia Data Browsing Tool as extended