J. Kobayashi and S. Komatsu: Identification of Seals by Exploiting Their Three-Dimensional Shape Based on Logarithmic Joint Transform, Technical Digest, ICO'04 (Tokyo, Japan, 2004), 97-98.

We show the feasibility of a new method to identify seals by explointing the differences in their three-dimensional shape. Images including the information of the three-dimensional shape are put through two kinds of filters, and then they are almost perfectly identified by logarithmic joint transform correlation.