虚拟分割下复杂建筑立面纹理3D建模方法

3D Modeling Method for Complex Building Facade Texture under Virtual Segmentation

针对因复杂建筑立面纹理特征难以捕捉,且存在噪声干扰,导致建模效果不佳的问题,提出一种基于虚拟分割的复杂建筑立面纹理3D建模方法。采集建筑立面像素信息数据,设置水平和垂直方向的特征标准参考量,采用虚拟分割法对不同立面区域的纹理实行分割,得到纹理变动向量。将特征信息看作是点云数据,设定去噪函数,计算不同特征的加权量完成去噪。以特征作为建模函数的初始输入,采取纹理映射方式,将复杂像素信息转换成简单信息,提高3D建模刻画的真实度,设计旋转平移矩阵,划分建筑立面的不同区域,根据区域内节点刻画3D建模函数,完成有效建模。仿真结果表明,所提方法建模质量表现较佳,建模结果与实际结果高度一致,且去噪效果较好。

A 3D modeling method for complex building facade textures based on virtual segmentation is proposed to address the problem of poor modeling performance caused by difficulty in capturing complex building facade texture features and the presence of noise interference.At first,the pixel information data of building facade were collected.Meanwhile,the horizontal and vertical characteristic standard values were determined.Moreover,the virtual segmentation method was adopted to segment the textures of different façade areas,and thus to obtain the variable vector of texture.Then,the feature information was regarded as point cloud data,and the denoising function was determined.Furthermore,the weights of different features were calculated to complete the denoising.The features were used as the initial input of the modeling function,and texture mapping was adopted to convert the complex pixel information into a simple information,thus improving the authenticity of 3D modeling portrayal.Finally,a rotation translation matrix was designed to divide different areas of façade.According to the nodes in the area,3D modeling functions were described,so that an effective modeling was completed.Simulation results show that the modeling quality of the proposed method is good,and the modeling results are highly consistent with the actual results.In addition,the method has good denoising effect.