Phase Analysis of Three-Dimensional Zernike Moment for Building Classification and Orientation in Digital Surface Model
Phase Analysis of Three-Dimensional Zernike Moment for Building Classification and Orientation in Digital Surface Model
复制标题
DOI：
10.1109/lgrs.2015.2496601
复制
发表时间：
2016
影响因子：
4.8
通讯作者：
Yimin Yan;Ye Zhang;Shu Tian;Fengjiao Gao
中科院分区：
文献类型：
--
作者：
Yimin Yan;Ye Zhang;Shu Tian;Fengjiao Gao
在这封信中，我们提出了一个相位分析的三维泽尼克矩（3D-ZM），估计数字表面模型（DSM）的建筑物之间的方向差异。利用DSM进行三维分析是建筑物重建和许多进一步遥感应用的重要途径。通过使用3D-ZM，我们可以在复杂的区域中分解物体的三维结构。由于3D-ZM具有幅度分量的旋转不变性，因此具有良好的目标分类性能。然而，早期的研究忽略了3D-ZM的相位分量，通过相位分量可以分析不同对象的方位，并且可以细致地区分相似的建筑物（在一个类别内），而其他传统的几何特征可能无法做到这一点。因此，我们研究了3D-ZM的相位分析，并提出了一个方位差估计的流程框架。实验结果表明，该方法能够鲁棒地发现相似建筑物之间的方位差异，提高了建筑物分类和定位的准确性。
In this letter, we proposed a phase analysis of the 3-D Zernike moment (3D-ZM), to estimate the orientation difference between buildings in a digital surface model (DSM). A 3-D analysis using the DSM is an important way for building reconstruction and many further remote sensing applications. By using the 3D-ZM, we could decompose the 3-D structure of an object in a complex domain. Benefiting from rotation invariance of the amplitude component, the 3D-ZM has excellent performance for object classification. However, the phase component of 3D-ZM is ignored in early research, by which orientation of different objects could be analyzed, and similar buildings (within one class) could be distinguished meticulously, whereas other traditional geometric features may fail to do so. Therefore, we studied the phase analysis of 3D-ZM and introduced a flow frame of orientation-difference estimation. Experimental results illustrated that our method could robustly find the orientation difference between similar buildings, and improvement on accuracy was achieved for building classification and orientation.