基于对象特征的建筑结构平面图空间数据自动生成方法

Method for Automatically Generating Spatial Data of Architectural Structure Plan based on Object Characteristics

采用目前方法生成建筑结构平面图空间数据时,无法获取建筑结构对象特征,存在还原性差、VRI值低和完全度低的问题,因此提出基于对象特征的建筑结构平面图空间数据自动生成方法。采用射线跟踪算法实现目标模型到图像平面的几何映射,在电磁散射模型的基础上获得后向散射图。采用主成分分析方法获取后向散射图中的建筑结构对象特征,根据提取的特征通过卷积运算生成建筑结构平面图空间数据。试验结果表明,所提方法的还原性好、VRI值高、完全度高。

When the current method is used to generate spatial data of building structure plan,the object characteristics of building structure can not be obtained,and there are some problems such as poor reducibility,low VRI value and low completeness.Therefore,an automatic generation method of spatial data of building structure plan based on object characteristics is proposed.The ray tracing algorithm is used to realize the geometric mapping from the target model to the image plane,and the backscatter map is obtained based on the electromagnetic scattering model.The principal component analysis method is used to obtain the features of the building structure object in the backscatter map.According to the extracted features,the spatial data of the building structure plan is generated by convolution operation.The experimental results show that the proposed method has good reducibility,high VRI value and high completeness.