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Scene fusion visualized method under geographic information platform

A geographic information and scene technology, applied in geographic information databases, image data processing, structured data retrieval, etc., can solve the problems of low cost performance, single geographic scene and data visualization form, inconsistent data and space, etc., and achieve consistency , expand the ability to display scenarios, and reduce development costs

Active Publication Date: 2018-07-10
中国科学院电子学研究所苏州研究院
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] These problems include: 1. The single problem of geographic scene and data visualization form of WebGIS platform; 2.2D or 2.5D scene and 3D underlying platform data and space inconsistency problem; 3. Low cost performance problem of full 3D GIS development

Method used

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  • Scene fusion visualized method under geographic information platform
  • Scene fusion visualized method under geographic information platform
  • Scene fusion visualized method under geographic information platform

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Embodiment Construction

[0052] first part

[0053] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0054] figure 1 It is a mechanism block diagram of the method of the present invention, and a scene fusion visualization method under a multi-geographic information platform includes 3 stages: stage 1 is the fusion of the bottom scene and the upper scene; stage 2 is to control the consistency of the space analysis of the upper scene and the lower scene; Phase 3 is the cyclic rendering of the WebGIS scene.

[0055] figure 2It is a flow chart of the fusion method of the bottom layer scene and the upper layer scene. First create the bottom layer WebGIS scene and the upper layer scene, select the 3D GIS platform with good interface as the bottom layer, and set the 3D digital earth, basic layer, camera and renderer. Then import the upper-level scene database, the data file is imported in json format, and the upper-...

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Abstract

The invention discloses a scene fusion visualized method under a geographic information platform. Fusion of an upper scene and a bottom scene is synchronized by (1) synchronizing a map projection; (2)synchronizing a view frustum; (3) establishing a bidirectional interaction function; (4) synchronizing a view matrix; and (5) synchronizing the azimuth, inclination angle and distance to the center of the view matrix. Connection is established after synchronization so that the upper scene and the bottom scene are kept consistent in space analysis. A mechanism cyclic rendering scene is determinedso that a bottom 3D WebGIS platform can be fused with different WeB GIS scenes. According to the method, different 2.5D or 2D GIS scenes are synchronized in state and rendered via the same algorithm,scene elements match completely, and sound bidirectional interaction is established between entities. The method can be used to enrich the visualization form of the GIS platform, reduce the development cost, and improve the applicability of the platform.

Description

technical field [0001] The invention relates to the field of geographic information visualization, in particular to a scene fusion visualization method under multiple geographic information platforms. Background technique [0002] With the explosive development of the Internet, WebGIS technology perfects and expands the traditional GIS technology, and provides opportunities for many users to use GIS. WebGIS technology has good scalability and cross-platform. In the Internet environment, WebGIS can realize the sharing of spatial data information among various fields and departments in the whole society, and greatly improve the efficiency of querying, publishing and maintaining spatial information. [0003] With the development of scripting languages ​​such as WebGL technology and JavaScript, people's demand for the visualization level of geographic big data is increasing. Excellent 2.5D and 2D GIS platforms such as Echarts, DeckGL, and Mapbox and some open source databases h...

Claims

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Application Information

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IPC IPC(8): G06T17/05G06T15/20G06F17/30
CPCG06F16/29G06T15/205G06T17/05
Inventor 徐汇军顾爽赵爽钱晶付啟明张尧
Owner 中国科学院电子学研究所苏州研究院
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