Three-dimensional Measurement Approach for Automatic Seal Impression Identification - Ryoji Haruki; Takahiko Horiuchi; Kazuo Toraichi; Kazuhiko Yamamoto; Hiromitsu Yamada; Anis Fu (Proceedings of IAPR Workshop on Machine Vision Applications, MVA 1994, December 13-15, 1994, Kawasaki, Japan, 1994)