Three-dimensional point cloud quality evaluation method and system

The invention discloses a three-dimensional point cloud quality evaluation method and system, and the method comprises the following steps: S1, obtaining point cloud information, inputting the point cloud information to a preset noise simulation function, and generating random point cloud noise; s2, constructing a point cloud score database based on the generated random point cloud noise and a preset point cloud quality evaluation method; s3, constructing a point cloud quality evaluation model based on the point cloud score database; and S4, inputting the point cloud information into the point cloud quality evaluation model, and outputting the quality score of the point cloud as a point cloud quality evaluation result. Compared with the prior art, the point cloud quality evaluation function based on the graph neural network is designed under the framework of the simplified graph neural network, the quality score of the point cloud can be quickly and accurately approached, meanwhile, a large-scale point cloud