The 3D Laser Scanning Technique for Damage Detection of Mortar Wall-Painting in Traditional Buildings

• Main Authors: Tseng, Hsing-Yu, 曾欣郁
• Other Authors: Wu, Tsung-Chiang
• Format: Others
• Language: zh-TW
• Published: 2012
• Online Access: http://ndltd.ncl.edu.tw/handle/m4ce3j

碩士 === 國立金門大學 === 土木與工程管理學系碩士班 === 100 === The traditional building walls usually were covered by mortar that become beautifying the space basis. Some paintings of walls are a symbol of cultural heritage and family spirit, at the same time, the wall-painting show increasing living fun and creation, education and art value. For the conservation site, the decorations of historical buildings saved should be regarded as equally important with the building structure. Owing environment factors, the mortar-wall and wall-painting are damaged including humidity variation and water seepage. To the traditional building culture value, the phenomenon is a significant impact. So the investigation and repair for mortar wall-painting is important item for maintenance of historic buildings. The damage detection and investigation of historical buildings is an important reference for restoration and conservation. In recent years, the technology detection system has become the one of essential method in the cultural field. This research is based on the research spirit to use scientific methods to assist professional judgment, trying to capture the space information of point clouds of pre-selected mortar wall-painting using high-precision 3D laser scanning, including 3D coordinates and digital image data. The cases study of the mortar wall-painting is in Tainan area. In the first instance it is using of the handy thermo to obtain the surface temperature of mortar wall-painting for the initial analysis. The result shows that temperature will be lower in the damaged area. Moreover, making 5 types of damage specimen that included powdering, bulging, chapping, flaking and others subsequently obtain the surface data by using 3D laser scanner. Applications on Triangulated irregular networks technology related to the specimen surface changes in the contour maps and detected that the characteristic feature of the different type that coincide the scanning cases. In this study, checking and statistics the success rate of detecting damaged area by infrared temperature sensor and 3D laser scanning technique. Show the reliability of detection technology of this research. So, the research result are joined the existed investigation method and repair damaged mortar wall-painting process to play auxiliary function of science.