基于多视角图像的建筑环境信息建模方法

Building environment information modeling based on multi-view image

摘要:

结合实践案例,探索了融合多视角图像数据的建筑环境信息建模方法,旨在提高建筑环境信息建模效率,改善屋檐底部等建筑局部信息建模精度；探索了多视角图像数据融合技术路线,并结合实践案例,展开了低空摄影测量与地面摄影,采集了实践案例的建筑与环境图像数据；构建连接点,融合多视角图像数据,将地面图像与空中图像融合,对一些空中很难拍摄到的死角区域进行图像的补充,实现多角度、全方位的图像采集,通过空中三角测量处理、密集匹配、纹理映射,生成实践案例的建筑环境信息三维数字模型.实践结果表明:通过融合低空摄影与地面摄影图像数据,可显著提高建筑环境信息建模效率和建筑细部信息建模精度,可解决单一图像源采集信息不完整的问题,且具有低成本、高效率、易操作的技术优势.对保护建筑进行数据采集和保护的过程中,利用多视角的建筑环境信息建模方法可以快速、高效地对其三维信息进行保存和记录,实现对历史建筑多维度数据的保存与传承.

Abstract:

Combined with practical cases, this paper explores the modeling method of building environment information based on multi-view images, aiming to improve the efficiency of building environment information modeling and the accuracy of local information modeling of building environment such as eave bottom. The technical route of multi-view image fusion was investigated, low altitude photogrammetry and ground photography were carried out based on practical cases, and the architectural and environmental image data of the practical cases were collected. By constructing connection points and fusing multi-view image data, the ground image was fused with aerial image, and the image of some dead corner areas which are difficult to capture in the air was obtained to realize multi-angle and omni-directional image acquisition. Through the air triangulation processing, dense matching, and texture mapping, the three-dimensional digital model of the building environment information of the practical case was generated. Results show that the integration of low altitude photogrammetry and ground photography image data could significantly improve the modeling efficiency of building environment information and the modeling accuracy of building detail information, and could solve the problem of incomplete information collected by a single image source, which has the advantages of low cost, high efficiency, and easy operation. In the process of data collection and protection of preserved buildings, the proposed method can achieve the rapid and efficient preservation and recording of three-dimensional data as well as realize the preservation and inheritance of multi-dimensional data of historical buildings.