Security monitoring system and method based on point cloud data

The invention relates to the technical field of point cloud data processing, and discloses a point cloud data-based safety monitoring system, which comprises a point cloud data acquisition module for acquiring three-dimensional point cloud data of a construction site; the point cloud data processing module is used for processing the three-dimensional point cloud data of the construction site to obtain first point cloud data; the point cloud data restoration module is used for inputting the to-be-restored point cloud data into a point cloud data restoration model and outputting restored point cloud data; the minimum distance generation module is used for calculating the minimum distance between the data points corresponding to the adjacent semantic units according to the repaired point cloud data; according to the method, the shielded part of the target object is generated through joint adversarial training, the minimum Euclidean distance between the center points of all the faces of the cubes of the adjacent