Method and device for generating ancient building model based on visual three-dimensional reconstruction

Abstract

The invention relates to a method and device for generating an ancient building model based on visual three-dimensional reconstruction. The method comprises the following steps: 1) images of an ancient building from different visual angles are obtained; 2) features of ancient building images are extracted, and feature matching operation is performed; 3) according to a feature matching result, a relative position and posture of a camera and sparse three dimensional point clouds of ancient building are calculated at a picture taking moment; 4) according to the relative position and posture of the camera and the sparse three dimensional point clouds of the ancient building at the picture taking moment, image patch matching is used to obtain dense three dimensional point clouds of the ancientbuilding; 5) according to the dense three dimensional point clouds of the ancient building, a triangular patch model of the ancient building is generated; 6) the triangular patch model of the ancientbuilding is used to calculate texture mapping and generate a three dimensional model of the ancient building according to matching relationship between three dimensional points and images. Via the method and device, images can be rapidly and effectively generated into the three dimensional model in an automatic manner; the method and device are advantaged by high safety, low cost, strong feasibility, and the like; current demand for digitalization of the ancient building can be met.

Description

technical field [0001] The invention belongs to the field of computer vision, and in particular relates to a method and device for generating a three-dimensional model of an ancient building based on a visual three-dimensional reconstruction technology. Background technique [0002] As a special carrier of cultural information, ancient buildings are the art treasures of human civilization, and protecting them is the bounden duty of the contemporary era. Ancient Chinese architecture has a long historical tradition and glorious achievements, but most of the ancient Chinese buildings are wooden structures, supplemented by colored paintings and carvings, and usually have complex and delicate structures. However, the wooden features of ancient Chinese buildings make their protection a huge challenge. Three-dimensional digital protection of ancient Chinese architecture is an important means of inheriting the essence of Chinese architecture and protecting cultural relics. [0003...

AI Technical Summary

Problems solved by technology

However, there is currently no effective method for generating 3D models of ancient buildings.

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