Research and Analysis of Ancient Architectural Elements Based on 3d Basic Model

: Ancient buildings have undergone hundreds of years of changes and vicissitudes, in an extremely fragile situation, ancient building protection and repair work cannot be delayed, the task of digital archiving and protection of ancient buildings is urgent. Traditional archival protection of ancient buildings relies on manual point measurement, written records, shooting images or video, etc., which is more difficult to obtain the complete spatial three-dimensional and cultural and damage information of ancient buildings, and low efficiency, long cycle, and easy to cause secondary damage to ancient buildings. Therefore, this paper combines the ground 3D laser, airborne LiDAR scanning and unmanned aerial tilt photogrammetry three kinds of real 3D technology to carry out comprehensive ancient building real 3D data acquisition and processing, ancient building 3D model data fusion and ancient building cultural information and damage information extraction method research, realize the ancient building 3D model data fusion based on improved feature point matching algorithm, based on K-Means and IsoData clustering algorithm based on the extraction of cultural information of ancient buildings, based on digital image processing technology of ancient building wall crack damage information extraction and GIS analysis technology based on the analysis of ancient building ground water and volume calculation of the water area.