Effectiveness of detailed information and material information for CG reproduction of historic buildings

This research is to reveal what kind of information is effective for more precise reproduction of digitally archived historic buildings. This research examines two CG (Computer Graphics) reproduction projects of Mitsubishi Ichigokan (Marunouchi, Chiyoda-Ku, Tokyo), which has already been demolished and digitally reproduced; and The Clinical Research Building, the University of Tokyo Hospital (Hongo, Bunkyo-Ku, Tokyo), which still remains with its demolition scheduled soon. While for the former subject, we only had its drawing for design, photos, reference materials, and hearings with the person in charge of an architectural design office, which reconstructed the building, we were able to study the actual building for the latter, collecting the necessary information in addition to its drawing for design and photos. Our research leads to finding that the vital element for more precise CG reproduction is Detail Information and Material Information. This paper illustrates the information that would be effective in advanced CG reproduction, describing and contrasting the working details for both buildings.