关键词: 电力走廊, 三维重建, 多模融合, 三维高斯泼溅

Abstract: Due to the limitations of LiDAR,such as a small field of view and insufficient density of sampling points,the 3D point cloud of power corridors reconstructed on the ground based on LiDAR is prone to information missing.To address this issue,this paper proposes a multi-modal fusion reconstruction method based on Gaussian splatting.Firstly,a SLAM system that fuses vision and LiDAR is adopted to achieve accurate estimation of sensor pose.Secondly,3D Gaussian primitives are initialized,and RGB images and depth maps are rendered through 3D Gaussian splatting (3DGS) technology.Finally,the Gaussian primitives are dynamically updated and the final results are generated by optimizing color and depth errors.Experimental results show that this method can effectively compensate for LiDAR blind areas,complement the reconstruction results using image information,and is superior to traditional methods in both model integrity and accuracy.This paper verifies the effectiveness of 3DGS in multi-modal 3D reconstruction,providing a new and effective approach for 3D reconstruction of power corridors.

Key words: power corridor, 3D reconstruction, multi-modal fusion, 3D Gaussian splatting