Three-dimensional visual modelling of geological information of hydraulic engineering based on surface constraint reconstruction

Abstract

In order to solve the problems of big errors in results and weak spatial expression ability of the existing three-dimensional visual modelling methods for geological information of hydraulic engineering, a three-dimensional visual modelling method of geological information of hydraulic engineering based on surface constraint reconstruction is proposed. Geological information of large-scale hydraulic engineering is loaded into an expert image processing system through the sparse scatterplot analysis method to construct a spatial scatterplot model for geological information distribution; adaptive feature matching is performed to the geological information through the template matching method, and edge contour features of the three-dimensional visual image are extracted through surface interpolation and vector edge clipping method; information enhancement and local profile horizon reconstruction are performed for the three-dimensional reconstruction image about geological information of large-scale hydraulic engineering through the wavelet domain feature decomposition method. Simulation results show that the method proposed in this paper can provide high accuracy in visual modelling of large-scale hydraulic engineering geological information with error of only 0.04 mm, strong spatial expression ability of three-dimensional visual modelling and relatively high matching of feature points, so it can provide good three-dimensional reconstruction effect of geological information.