A method for online three-dimensional display of disaster information spatio-temporal data

Abstract

Provided is an on-line three-dimensional display method for disaster information spatio-temporal data. The on-line three-dimensional display method for the disaster information spatio-temporal data comprises the steps that the disaster information data are obtained from a disaster messenger website through a network; a three-dimensional earth model is drawn in an on-line mode by using a WebGL framework technology and a virtual texture technology through a browser; the disaster information spatio-temporal data are preprocessed according to the time series, and the disaster information spatio-temporal data are transmitted to the browser; the browser directly draws a three-dimensional disaster model through the WebGL framework technology and by calling a computer display card; the browser builds a three-dimensional disaster model framework in a matched mode by using the three-dimensional earth model as the background according to position information data, and the three-dimensional disaster model framework is displayed on the browser. The problems that a three-dimensional visualization technology can only be achieved by using a browser plug-in or extension when being used for disaster information demonstration, backtracking query of historical disaster information cannot be carried out in the aspect of three-dimensional disaster display, and comparison between the historical disaster information and real disaster information is poor are solved.

Description

technical field [0001] The invention relates to an online three-dimensional display method of disaster information spatio-temporal data. Background technique [0002] With the frequent human activities, there are various types of disaster information, including sudden geological disasters such as landslides, landslides and debris flows, and slow geological disasters such as land subsidence and seawater intrusion. How to integrate all kinds of disaster information in an orderly manner, quickly find the disaster information that people are concerned about in these large amounts of disaster information, and how to express these information and their changing trends intuitively and visually has become an increasingly informatized and networked contemporary society. focus of research. [0003] Disaster information is often expressed in the form of electronic documents, or online text and pictures. With the variety of disaster information and people's increasingly diverse inform...

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Problems solved by technology

[0005] The present invention is an online three-dimensional display method of disaster information spatio-temporal data, which solves the problem that the three-dimensional visualization technology can only be realized by using browser plug-ins or extensions in disaster information demonstration, and that historical disaster information cannot be retrospectively queried on disaster three-dimensional display. And the problem of weak comparison between historical and actual disaster information

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