interactive modeling method

Abstract

An interactive modeling method, including: a consistent segmentation step, which divides a multi-view image into several regions uniformly; a confidence step, which evaluates the confidence of each region and compares it with a threshold; an interactive step, which is lower than In the area of ​​the threshold value, manually outline and return to the confidence step; repeat the step, repeat the confidence step and the interactive step until the confidence of each area in several areas meets the threshold requirement; the modeling step generates buildings based on several areas that meet the threshold value. The invention not only deeply digs the image information, but also fully combines the prior knowledge of the building structure, thereby greatly reducing user interaction and effectively improving the degree of modeling automation. In addition, the image-based interactive building modeling method can not only be used for 3D reconstruction, but also can greatly assist architectural design and real scene planning and design.

Description

【Technical field】 [0001] The invention relates to an application of image understanding, in particular, an interactive modeling method for extracting buildings is designed. 【Background technique】 [0002] With the popularization of various camera-capable devices, it is very easy to obtain pictures. How to quickly reconstruct the 3D model of the real world with pictures is still a hot and difficult research problem in the field of computer graphics and vision. As the most important part of the urban scene, the construction of its 3D model has attracted extensive attention from academia and industry. [0003] In the existing image-based architectural modeling, two methods, automatic and interactive, are basically used for modeling. [0004] For image-based automatic modeling, it has relatively high requirements for the number of input images and shooting angles. Due to the influence of lighting, mutual occlusion of building structures, and wall textures, it is often difficult...

AI Technical Summary

Problems solved by technology

[0004] For image-based automatic modeling, it has relatively high requirements for the number of input images and shooting angles. Due to the influence of lighting, mutual occlusion of building structures, and wall textures, it is often difficult to obtain ideal shooting angles and a sufficient number of images. On the other hand, buildings, especially modern buildings, have strong regularity, and the matching of multiple pictures in the process of automatic modeling is easy to produce ambiguity. It is difficult for automatic methods to resolve this ambiguity, resulting in poor

[0005] The interactive method requires the user to form a complete geometric structure through a large number of sketches, which is inefficient and needs to be improved.