Method and system for constructing three-dimensional model of building based on improved homotopic mapping algorithm

Abstract

The invention discloses a method and a system for constructing a three-dimensional model of a building based on an improved homotopic mapping algorithm, wherein the method comprises the steps of respectively acquiring a ground floor plane image, a top floor plane image and profile images of the building, and further constructing a ground floor contour curve function and a top floor contour curve function of the building and profile changing curves of the building; standardizing a coordinate of control points of the profile changing curves of the building, and carrying out curve fitting to obtain a homotopic mapping function; obtaining a horizontal plane two-dimensional coordinate of the control points on contour curves of each floor of the building based on the improved homotopic mapping algorithm; obtaining a vertical coordinate of the control points on the contour curves of each floor of the building according to the number of floors and the floor height of the building; and sequentially generating the contour curves of each floor according to coordinate values of the control points on the contour curves of each floor of the building, and finally obtaining the three-dimensional model of the whole building.

Description

technical field [0001] The invention belongs to the field of building model design, in particular to a building three-dimensional model building method and system based on an improved homotopy mapping algorithm. Background technique [0002] Architecture is an art, a complex complex and a "city sculpture", which reflects the history of human civilization and the progress of science and technology. With the development of the times and the diversification of building materials, the shape of modern buildings is no longer a regular cuboid, but more and more variable shapes, using curved surfaces, asymmetrical and other modeling techniques, through points, lines, Surface and volume demonstrate the characteristics of modern architecture. [0003] The existing three-dimensional model building methods of buildings all use regular shapes to simulate buildings, but this method of simulating buildings with regular shapes can no longer satisfy the modeling and simulation of buildings ...

AI Technical Summary

Problems solved by technology

[0003] The existing 3D model construction methods of buildings all use regular shapes to simulate buildings, but this method of simulating buildings with regular shapes can no longer satisfy the modeling and simulation of buildings with variable shapes, and lacks a sense of reality

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