| Hui-style architecture is an artistic treasure of my country’s traditional architectural culture.Due to wind and rain erosion and neglect of protection,it has been severely damaged in recent years.The protection and restoration of Hui-style architecture is imminent.Traditional restoration methods rely largely on the experience of builders,and with the changes of the times,many traditional crafts have been lost.In addition,manual methods are time-consuming and laborious,and there are serious safety hazards such as manual climbing and measurement.Today,when traditional buildings are seriously damaged and need to be repaired urgently,there is an urgent need for an alternative to manual and traditional measuring instruments to be used in the protection and restoration of Huizhou-style buildings.Three-dimensional lidar is a new generation of measurement tools,which can quickly and accurately obtain spatial three-dimensional information,generate digital elevation models and spatial threedimensional point cloud data,which greatly facilitates the three-dimensional reconstruction of the measurement scene,and can complete tasks that cannot be completed by traditional measurement methods.The protection and restoration of Huizhou architecture is an inevitable trend.This article takes several miniature lidars of the "R-Fans" series as examples,elaborates on the working principle and measurement model of 3D lidar,and analyzes the characteristic types of 3D point cloud data and how to extract characteristic information.After obtaining the point cloud information with features,it analyzes why the point cloud information cannot be used directly,and what kind of processing needs to be carried out.It further introduces the conventional process of point cloud data processing,and de-noises the most important data.Three aspects of simplification and data registration are discussed,and effective methods and commonly used filter functions in the data processing process are introduced.After the end of the data-based processing flow,the core algorithm of this paper,the outline segmented smoothing algorithm based on 3D lidar,was compared with the improved Gaussian adaptive smoothing algorithm to analyze how this algorithm retains detailed information and Find a balance between denoising to the greatest extent,and design a simulation experiment to verify it.The effect of the algorithm is verified from the two perspectives of the edge smoothing effect and the improvement of the recognition rate after smoothing.The results prove that the algorithm is reliable.Finally,based on the effective algorithm proposed in this paper,combined with the characteristics of Huizhou architecture and existing conditions,specific experiments were designed,and the experiment was conducted in the Tangyue archway group in Huizhou where the Huizhou architectural elements were obvious.The data was collected and analyzed.The experiment proved the outline algorithm.The restoration work for Huizhou buildings is feasible,and the overall efficiency is also high.It has a good reference value for the people who are currently engaged in the protection of Huizhou architecture,and is of great significance to the protection and inheritance of my country’s traditional culture.Figure [37] Table [10] Reference [72]... |