STUDY ON EXTRACTION AND EXPRESSION METHODS OF BULGING DISEASES IN ANCIENT CITY WALLS
- 1School of Geomatics and Urban Spatial Informatics, Beijing University of Civil Engineering and Architecture, 102616 No.15Yongyuan Road, Daxing District, Beijing, China
- 2Beijing Key Laboratory For Architectural Heritage Fine Reconstruction & Health Monitoring, 102616 No.15Yongyuan Road, Daxing District, Beijing, China
- 3Beijing Advanced Innovation Center for Future Urban Design, Beijing University of Civil Engineering and Architecture, Beijing 100044, China
Keywords: city wall heritage protection, bulging monitoring, 3D scanning
Abstract. The ancient city wall contains rich cultural values. Due to environmental and human factors, there are many diseases in the ancient city wall: bulging, cracking, etc., which will lead to the collapse or even death of the ancient city wall. Therefore, the monitoring and protection of the ancient city wall is imminent. This paper proposes a new scheme for bulging monitoring for wall bulging. The feature plane is fitted according to the actual scan data, the degree of bulging, the trend and the area size are determined, and the bulging deformation of the city wall is displayed in the form of an image. Simplify workflow, improve data processing efficiency, and display more intuitively.