1. Central Research Laboratory, Hitachi, Ltd., 185-8601, Kokubunji, Tokyo, Japan
2. Hitachi High-Tech Solutions Corporation, 319-0316, Mito, Ibaraki, Japan
3. Hitachi, Ltd., Defense Systems Company, 101-8608, Chiyoda, Tokyo, Japan
4. National Research Institute of Police Science, 277-0882, Kashiwa, Chiba, Japan
5. Tokyo Metropolitan Police Department, 100-8929, Chiyoda, Tokyo, Japan