A STUDY ON AREA DEMARCATION AND SITE RESTORATION OF NAGASAKI TOJINYASIKI

Abstract

“Tojinyasiki” of Nagasaki is an important historical facility for understanding the history of foreign policy during Tokugawa period. However, the original specific area of the facility could not been determined because the facility had not been owned by public, and the border have changed by the development of housing. On this background, this study aimed at presuming the specific area of “Tojinyasiki” by using GPS and GIS technology. Based on the field survey, the old maps, the old pictures and the current maps are processed by GIS, and the site structure is represented by computer graphics. Moreover, it is feasible to represent the 3D terrain of “Tojinyasiki” in a more realistic form, by using the computer graphics and drawing synthesis. Accordingly, this study proposes a new method in the field of Civil Engineering Historical Research to presume the specific area of vestige, by combining digitization of old picture maps, old maps and historical documents with GIS technologies.