Research into Restoration of Destructed Ancient Tombs (Kofun) Used by Aerophotographs

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In this study, we researched ancient tombs existed nationwide and collectedthe photographs of them by aerial photography, and attempted to visually restore fifty destructed ancienttombs. The ancient tombs in this study are categorized as"Zenpou-Kouenfun", constructed during the ancient times in Japan.In this survey of the destructed ancient tombs, we classified them into several groups; firstly : 336 tombs as having been destructed and half-destructed. Secondly: 204 tombs as having been partially destructed. At the same time, we collected materials and photographs related to the subject, and preserved them in database management.During the last four years, the amount of the photographs reached 1500 pieces equivalent for 700 ancient tombs. The photographs were surveyed through a stereoscope for aerial photography and selected into suitable ones to be archived and digitized. Furthermore, we observed the conditions of types of those tombs, and attempted to analyze and graphically visualiz … More e them, using Map Matrix and Feature Matrix of the CBS Company. Although the software above mentioned was introduced in 2009 into this study and started a full-scale operation in 2010, so far it has been possible for approximately 50 tombs and several groups of the tombs to be automatically data processed, and restoration of their scale and plane type was also achieved.However, several problems are left : for example, considering the type of an ancient tomb, such miner details as the edge of a tomb and the conditions of the layer cannot be realized completely in automatic data procession, in spite of visual observation to a certain degree. In addition to that, in attempting to restore certain parts in research materials manually, we found that it did not admit of mass production in need of sufficient skills.Despite these problems, it is concluded that our original expectations have been fulfilled : we achieved a prospect for reevaluation of the time when the tombs for the chiefs were built, through investigating thoroughly the materials collected. Of the reevaluation of the chief tombs, we studied in the Mimasaka area on the basis of the survey having been done until the 2009 academic year, and considered once again the role of"Zenpou-Kouenfun" in the history of the ancient Japan by reexamining of the conditions of ancient tombs nationwide, on the ground of the analysis of the aerial photographs and the results of automatic data processing. Less