铁路大场景立体影像模型制作关键技术及应用

研究目的:大场景立体影像模型是由正射影像和立体辅助影像构成的无缝立体影像模型,传统模型制作方法工作量大、作业效率低下,限制了生产应用。本文根据大场景立体影像模型制作原理,优化作业模式,从航摄影像匀色、数字高程模型生产及影像拼接线编辑生产等大场景立体影像模型制作关键技术上提出可行的方案,实现大场景立体影像模型的高效快速制作,以满足生产应用需求。研究结论:(1)大场景立体影像模型可提供一个连续无缝的真三维立体环境,通过该模型可进行三维立体显示、量测、设计、分析和数据采集;(2)试验出一套快速便捷的制作大场景立体影像模型的工作方法及流程,系统总结了大场景立体影像模型在铁路勘察设计各个专业的应用情况;(3)大场景立体影像模型可作为一个新的数字测绘产品,对推动铁路勘察设计信息化、智能化发展具有重要的意义,不仅在铁路行业能够发挥巨大的价值,同样适用于公路、水利、电力、城市规划等工程领域。

Key Technologies for Making Large Scene Stereo Model and Its Application in Railway Survey and Design

Research purposes:Large scene stereo image model is a seamless stereo image model composed of Orthophoto images and stereo auxiliary images.The traditional method of making stereo model needs heavy workload with low efficiency,which limits its production and application.According to the principle of making large scene stereo image model,this paper optimizes the operation mode,and puts forward feasible schemes for promoting the key technologies and steps,such as the uniform of aerial photography image color,digital elevation model production and image mosaic line editing,so as to realize the efficient and rapid production of large scene stereo image model and meet the application requirements.Research conclusions:(1)Large stereo scene model can provide a continuous and seamless real three-dimensional environment through which three-dimensional stereo display,measurement,design,analysis and data acquisition can be realized.(2)A scheme of fast and convenient working flow for making large stereo scene model is experimented.The application of large stereo scene model in railway survey and design is systematically summarized.(3)Large stereo scene model can be used as a new digital mapping product,which is of great significance in promoting the development of information and intelligence in railway survey and design.Not only plays a tremendous value in the railway industry,but also applicable to highway,water conservancy,electricity,urban planning and other engineering fields.