A three-dimensional building model house layered household graph fuzzy matching method based on tangent space

Abstract

The invention provides a three-dimensional building model house layered household graph fuzzy matching method based on tangent space. The method comprises five steps of layered household graph outer contour extraction, layered household graph outer contour polygon simplification, tangent space function initialization, minimum similarity distance solution and layered distribution graph matching. According to the invention, a tangent space method is adopted to describe a layered household graph; automatic matching of vector planar graphs and automatic superposition of layered household graphs are achieved, the problem that time and labor are wasted when house layered household graphs are manually matched in actual three-dimensional building modeling work is solved, the three-dimensional building modeling efficiency is improved, consumption of manpower and financial resources is reduced, and the method has good application value in actual application.

Description

technical field [0001] The invention relates to the technical field of computer graphic matching, in particular to a fuzzy matching method for a three-dimensional real estate model house layered household diagram based on tangent space. Background technique [0002] The house stratification and household diagram is an important material for real estate property rights and property registration management. It is used to identify the room number, area, floor number, house boundary line and other information of each real estate unit. The layered household diagram is used to build a three-dimensional real estate model, and the multi-layered layered household diagram is superimposed together, and then the three-dimensional model is generated by stretching according to the attribute information such as floor height. However, in actual operation, it is time-consuming and labor-intensive to manually superimpose the household diagrams of different floors. [0003] Patent 20151084559...

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Problems solved by technology

[0005] In order to overcome the time-consuming and labor-intensive defect of building a three-dimensional real estate model in the above-mentioned prior art, the present invention provides a fuzzy matching method for a three-dimensional real estate model based on a tangent space for layered household diagrams, and uses a tangent space method to describe the layered households Realize the automatic matching of vector surface graphics and the automatic superposition of layered household diagrams, which solves the time-consuming and laborious problem of manual matching of house layered household diagrams in the actual 3D real estate modeling work, and improves the efficiency of 3D real estate modeling. Reduce the consumption of human and financial resources, and have good application value in practical applications

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