Research On 3D Modeling Method Of Rack Rail Design Based On UAV Aerial Photography

At present,the rack railway is a vigorously promoted transportation method in domestic mountain tourism.The rack railway has the advantages of large climbing and good adaptability,but the protection of the geological environment and ecological environment along the way must be fully considered when designing the line.In this paper,by constructing a three-dimensional line model of rack railway on the low-altitude remote sensing image of the drone,we seek a simple and efficient design method to reduce the field workload of the initial and fixed line measurement,and let the designer intuitively perceive when designing the line The effect map after the route is completed,in order to make corresponding adjustments,it can also provide design direction for the construction of the Hailuogou mountain resort tourism line in the Gongga Mountain in the future.The main work and results in this article are as follows:(1)Based on the UAV low-altitude remote sensing image,the three-dimensional real map of the Moses platform is obtained by interpreting through Context Capture(Smart 3D)software.(2)Classification and coding based on rack railway structure,and detailed division and coding based on the example of rack railway track and vehicle engineering,and the size data of standard parts are constructed with primitives,and two-dimensional component drawings are drawn by CAD.Import into Sketch Up to establish a 3D primitive software model,and perform 3D rendering through VRay,and select Component Finder for model library management.(3)Collect and collate the geological,administrative division and nature reserve data along the route,use the railway line design software CARA to design the horizontal and vertical lines,generate KML line files and import the three-dimensional rack railway in Google map The model builds a mountain rail transit line model on the three-dimensional real map of the Moses platform.