A Panorama Image and 3D Laser Point Cloud Integration Approach for Railway Surveying

Railway Survey and operation during construction and operation is very important for planning, design, construction and safety operation of existing line. Aiming at the problems of low efficiency and poor coverage of existing line, this paper puts forward the existing line survey technology based on the integration of 360 degree panoramic and 3D laser point cloud. Through the integration of panoramic image and 3D laser point cloud obtained by 3D laser scanning mobile surveying and mapping system, the integrated index management of 3D laser panoramic data is realized, and the existing line survey platform based on three-dimensional laser panorama is designed and realized, and the geometric and attribute information of the existing line route survey are obtained. It provides an efficient, safe and accurate measurement method for the existing railway line's reconnaissance and mapping.