基于机载激光雷达技术的三维景观自动建模方法

Automatic 3D landscape modeling method based on airborne LIDAR technology

当前三维景观建模方法存在建模精度低,误差大,而且实时性差等不足,为了提高三维景观建模精度,克服当前三维景观建模方法存在的局限性,提出了基于机载激光雷达技术的三维景观自动建模方法。首先分析三维景观建模的工作原理,找到影响三维景观建模效果的因素,然后采用机载激光雷达技术采集景观的相关数据,并引入虚拟现实技术构建三维景观模型,最后与其他方法进行了三维景观建模的仿真实验,对比结果表明,研究方法对中误差最高为0.006 3 cm,观测误差最高为0.002 2 cm,重建精度在92.8%以上,建模效率在92%以上,获得了更加理想的三维景观建模效果。

The current three-dimensional landscape modeling methods have disadvantages of low modeling accuracy, large error and poor real-time performance. In order to improve accuracy of three-dimensional landscape modeling and overcome the limitations of current three-dimensional landscape modeling methods, an automatic three-dimensional landscape modeling method based on airborne LIDAR technology is proposed. Firstly, the working principle of three-dimensional landscape modeling is analyzed to find out the factors that affect effect of three-dimensional landscape modeling. Then, the airborne LIDAR technology is used to collect relevant landscape data, and virtual reality technology is introduced to build three-dimensional landscape model. Finally, simulation experiments of three-dimensional landscape modeling and other methods are carried out. The comparison results show that the maximum mean square error of proposed method is 0.006 3 cm, the highest observation error is 0.002 2 cm, the reconstruction accuracy is higher than 92.8%, and the modeling efficiency is more than 92%, so a more ideal 3 D landscape modeling effect is obtained.