Building method of model of aviation inclined shooting geographic photos

Abstract

The invention discloses a building method of a model of aviation inclined shooting geographic photos. The method comprises the steps that a virtual camera model of each photo is restored in an internal storage, photos corresponding to roughly positioned three-dimensional space coordinates are inquired, pixel homonymy points are inquired for all drawn peaks on the photos, three-dimensional space coordinates of the pixel homonymy points are obtained by back calculation, accurate three-dimensional space coordinates of the peaks are calculated by fitting, a building outline is drawn on the aviation photos, and a three-dimensional building model is generated. The building method is low in requirement for professional technical level of operators and less in operation, the whole procedure is low in production cost and short in production period, the obtained model is high in precision and good in visual effect and can highly coincide with the terrain, and the site can be effectively and really reflected.

Description

Technical field [0001] The invention involves the three -dimensional modeling field of architecture, which specifically involves a model establishment method of a model of geographical photos taken by aviation. Background technique [0002] Quick three -dimensional urban modeling and rural residential modeling can be widely used in emergency command, land safety, urban management, rural residential management and other industries.Traditional manual modeling has low efficiency, high cost, and difficult work, only suitable for small -scale local modeling; it cannot solve the needs of large -scale urban modeling.Due to the low efficiency of traditional manual modeling work, many industrial applications with high timeliness requirements cannot be able to obtain three -dimensional model data in time, and to a certain extent, the application and promotion of three -dimensional model data are limited. [0003] The tilt measurement belongs to the photography simulation measurement. The c...

AI Technical Summary

Problems solved by technology

Usually a building has thousands of vertices or tens of thousands of vertices. Whether it is building a "white model" or finding texture coordinates for vertices, it is a time-consuming operation, which leads to long production cycle and high cost of the whole process. High technical requirements for operators

On the other hand, it is difficult to accurately measure the height and related dimensions of each coordinate point for high-rise buildings, so the accuracy of the submitted model is poor, and even the dimensions deviate far from reality

If the texture picture of the model is from on-site shooting and collection, the collection time and equipment are different from the aerial 3D terrain, which will cause the model to be placed on the 3D terrain after it is built, which is seriously inconsistent with the terrain, the visual effect is poor, and it cannot be effectively reflected. real scene