危险建筑倾斜度三维虚拟测量技术研究与仿真

Simulation and Research on Three-Dimensional Virtual Measurement Technology for Inclination of Dangerous Building

研究危险建筑倾斜度三维虚拟测量技术,对建筑测绘学具有十分重要的意义。由于在危险建筑倾斜度测量的过程中,常常面临对称测量问题。传统的测量方法解决对称测量问题时,需要对危险建筑两侧进行两次测量,需要移动测量工具,在移动倾斜度测量过程中会产生细微的对称偏差,造成危险建筑三维模拟模型特征偏移,测量误差较大。提出采用光流恢复算法的危险建筑三维虚拟测量建模方法,并且将上述技术应用到危险建筑倾斜度测量的过程中。针对采集的大量的危险建筑图像,利用人眼观看物体运动情况,则物体的运动情况能够在人眼中呈现一个有序的图像序列,为三维虚拟建模提供依据,根据立体视觉技术的相关原理,以及采集的建筑图像中的多目标特征点,对目标进行立体恢复,从而能够建立危险建筑的三维虚拟模型。实验结果表明,利用改进算法进行三维虚拟建模,能够提高测量的准确性。

Research on three-dimensional virtual measurement technology for inclination of dangerous building, has great significance for building geomatics. In this paper, we proposed a three-dimensional virtual measurement modeling method for the dangerous building based on optical flow recovery algorithm, and these techniques were applied to the process of measuring the inclination of dangerous buildings. For the large number of collected dangerous building＇ s image, we watched the movement of the object with human eyes, then an ordered image sequence of the motion of the object can appear in the eyes, providing the basis for a three-dimensional virtual modeling. According to the related principles of stereo vision technology and the muhi-target feature points of collected building image, the three-dimensional recovery was carted out with the target, so as to establish a three-dimensional virtual model of dangerous buildings. The experimental results show that using the improved algorithm for three-dimensional virtual modeling can increase the accuracy of measurement.