3D localization of partially buried object in unstructured environment - Kenichi Maruyama; Koji Oka; Ryuichi Takase; Yoshihiro Kawai; Takashi Yoshimi; Hironobu Takahashi; Fumiaki Tomita (19th International Conference on Pattern Recognition (ICPR 2008), December 8-11, 2008, Tampa, Florida, USA, 2008)