Three-dimensional geographic information visualization method and system based on video fusion

Abstract

The invention discloses a three-dimensional geographic information visualization method and system based on video fusion. The three-dimensional geographic information visualization method comprises the following steps: S1, generating a three-dimensional geographic information model; S2, calibrating key points in the three-dimensional geographic information model; S3, generating a plurality of keypoint coupling groups based on the spatial position relationship of the plurality of key points; S4, acquiring a real-time monitoring video; S5, performing frame analysis on the real-time monitoring video to obtain a plurality of key frames and a plurality of common frames; S6, fitting the key point coupling group to the key frame; S7, fusing the key frame into the three-dimensional geographic information model according to a fitting result; and S8, fusing the common frame into the three-dimensional geographic information model based on the fusion result of the key frame. According to the three-dimensional geographic information visualization method, hardware performance distribution is optimized in a priority division mode, and the accuracy of a three-dimensional geographic information visualization result and the impression of a picture are guaranteed.

Description

technical field [0001] The invention relates to the field of geographic information systems, in particular to a method and system for visualizing three-dimensional geographic information based on video fusion. Background technique [0002] Geographical information data visualization is mainly based on geographic information science, computer science, cartography, cognitive science, information transmission science and geographic information system, and through computer technology, digital technology, multimedia technology, dynamic, intuitive and vivid performance and interpretation , Transmitting geographic information and spatial information and revealing its laws, is a discipline about the theory, method and technology of information expression and transmission. It aims to display and interact with the results and data of geoscience information input, processing, query, analysis and prediction in graphical symbols, icons, text, tables, videos and other visual forms by mean...

AI Technical Summary

Problems solved by technology

[0004] Most of the existing 3D geographic information visualization technologies use the method of frame-by-frame generation, which requires extremely strong hardware performance as support. If the hardware performance is insufficient or the hardware performance is degraded due to external factors, it will have a serious negative impact on the visualization process. Mainly manifested in screen tearing

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