Method for intelligent evaluation and protection of spatial patterns in traditional villages based on multi-source data fusion

Abstract

Disclosed is a method for intelligent evaluation and protection of spatial patterns in traditional villages based on multi-source data fusion, which relates to the technical field of cultural heritage protection. In the method, firstly, three-dimensional point cloud and historical document text are acquired, and mapping between physical nodes and semantic nodes, and an initial static heterogeneous hypergraph are constructed. Secondly, anisotropic visual semantic field strength in a three-dimensional space is calculated by using a semantic ray casting algorithm, and weights of hyperedges are updated through a line-of-sight semantic gradient integral and a visual consistency coefficient to generate a dynamic heterogeneous hypergraph. Subsequently, style gene impedance that characterizes a degree of obstruction to the spatial pattern is calculated through spectral analysis. Finally, based on topological sensitivity analysis of the style gene impedance and reverse ray casting, a spatial restoration strategy is generated in combination with an intervention cost.