论文标题

使用二进制整数编程从街道视图图像中快速和正规化的重建构建立面

Fast and Regularized Reconstruction of Building Façades from Street-View Images using Binary Integer Programming

论文作者

Hu, Han, Wang, Libin, Zhang, Mier, Ding, Yulin, Zhu, Qing

论文摘要

原始人的正规化安排在建立立面建立对齐地点和一致的大小方面对城市环境的结构化重建非常重要。混合整数线性编程用于解决问题,但是,即使对于最先进的商业求解器,它也很耗时。为了减轻此问题,我们将问题投入到二进制整数编程中,这省略了对实际价值参数的要求,并且更有效地解决了。首先,使用Yolov3架构实时检测原始框的边界框。其次,左上角的坐标和边界框的尺寸自动聚集在二进制整数编程优化中,该二进制整数编程优化,共同考虑几何健身,规律性和其他约束;此步骤不需要\ emph {a先验知识,例如簇数或预定义的语法。最后,正规化的边界框可直接用于引导交互式环境中的立面重建。实验评估表明,提取原始素的精度高于0.82,这足以满足以下3D重建。所提出的方法仅需$ 10 \%$至$ 20 \%的运行时间$ $,并且将边界盒的多样性降低到$ 20 \%$至$ 50 \%$ $。

Regularized arrangement of primitives on building façades to aligned locations and consistent sizes is important towards structured reconstruction of urban environment. Mixed integer linear programing was used to solve the problem, however, it is extreamly time consuming even for state-of-the-art commercial solvers. Aiming to alleviate this issue, we cast the problem into binary integer programming, which omits the requirements for real value parameters and is more efficient to be solved . Firstly, the bounding boxes of the primitives are detected using the YOLOv3 architecture in real-time. Secondly, the coordinates of the upper left corners and the sizes of the bounding boxes are automatically clustered in a binary integer programming optimization, which jointly considers the geometric fitness, regularity and additional constraints; this step does not require \emph{a priori} knowledge, such as the number of clusters or pre-defined grammars. Finally, the regularized bounding boxes can be directly used to guide the façade reconstruction in an interactive envinronment. Experimental evaluations have revealed that the accuracies for the extraction of primitives are above 0.82, which is sufficient for the following 3D reconstruction. The proposed approach only takes about $ 10\% $ to $ 20\% $ of the runtime than previous approach and reduces the diversity of the bounding boxes to about $20\%$ to $50\%$.

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