以多幅图像非几何约束线段匹配重建建筑物外立面三维线段模型

发布时间：2018-04-29 01:29

本文选题：多幅图像 + 线段匹配　；参考：《西安交通大学学报》2014年04期

【摘要】：针对建筑物外立面三维线段模型重建的现有算法中存在多幅图像线段匹配需要提前获知对极几何约束,以及三维线段重建的过程会因为输入误差的累积而受到影响等问题,提出了一种以非几何约束重建三维线段模型的算法。该算法在多幅图像的线段匹配过程中以点线相结合的高稳定性双视图线段匹配算法为基础,通过匹配线段间的传递性形成匹配线段组,再剔除不相容匹配并合并相容匹配,最终得到准确的匹配线段结果。三维线段重建采用分段重建的方式得到每一个匹配线段组对应的三维线段,再经过对线段长度和角度的约束,剔除不构成建筑物外立面框架的空间线段,最终构成建筑物外立面的三维线段结构。实验结果表明,该算法可以有效重建出建筑物外立面的整体框架。
[Abstract]:In view of the existing algorithms of 3D line segment model reconstruction of exterior facade of building, there are many problems such as line segment matching needs to know the constraint of polar geometry in advance, and the process of 3D line segment reconstruction will be affected by the accumulation of input error, etc. An algorithm for reconstruction of three-dimensional line segment model with non-geometric constraints is proposed. In the course of line segment matching of multiple images, this algorithm is based on the high stability double view segment matching algorithm combined with points and lines. By transitivity between the matching lines, the matching line segment group is formed, and then the incompatible matching is eliminated and the compatible matching is merged. Finally, the exact matching line segment results are obtained. The 3D line segment reconstruction adopts the method of segmental reconstruction to get the 3D line segment corresponding to each matching line segment group, and then after restricting the length and angle of the line segment, the spatial segment which does not constitute the frame of the outer elevation of the building is eliminated. Finally, the three-dimensional line segment structure of the outer facade of the building is constructed. The experimental results show that the proposed algorithm can effectively reconstruct the whole frame of the outer facade of the building.
【作者单位】：西安交通大学电子与信息工程学院;西安交通大学软件学院;
【基金】：深圳市南山区技术研发和创意设计项目(KC2012JSJS0019A)
【分类号】：TP391.41;TU17

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