A three-dimensional visualization implementation method based on SVG map data

A technology of map data and implementation methods, applied in image data processing, 3D image processing, graphics and image conversion, etc., can solve the problems of time-consuming, cumbersome process, high learning cost, etc., achieve low cost, reduce maintenance cost, and reduce development cycle effect

Pending Publication Date: 2019-05-03
SHANGHAI SEARI INTELLIGENT SYST CO LTD
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Problems solved by technology

However, since the current 3D map mainly relies on real-scene photography modeling or modeling based on professional software, t

Method used

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  • A three-dimensional visualization implementation method based on SVG map data
  • A three-dimensional visualization implementation method based on SVG map data

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Embodiment Construction

[0015] Below in conjunction with specific embodiment, further illustrate the present invention. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the teachings of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.

[0016] combine figure 1 A method for implementing three-dimensional visualization based on SVG map data provided by the present invention comprises the following steps:

[0017] Step 1, SVG map drawing, according to the defined SVG map data structure, make a file in SVG format in the Adobe Illusrator application, edit the map object properties, and get the SVG map file. In this embodiment, the map data structure includes: SVG...

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Abstract

The invention relates to a three-dimensional visualization realization method based on SVG map data, and the method is characterized in that the method comprises the following steps: drawing an SVG standard map; analyzing each layer group, and analyzing SVG basic graphic elements; and constructing a three-dimensional scene by utilizing a WebGL three-dimensional engine, adding a map model, and adding corresponding icons. According to the technical scheme, the SVG map of a given SVG map data structure serves as bottom data, elements of all layers of the SVG are analyzed to obtain geographic information, modeling is conducted through a three-dimensional engine, and finally the three-dimensional visualization effect of the SVG map data is achieved. The cost for drawing the SVG vector map is low, and the map precision is far higher than that of a common bitmap. The SVG map is used as bottom layer data of the three-dimensional map to construct the three-dimensional map, so that the development period can be greatly shortened, the maintenance cost can be greatly reduced, and geographic information can be expressed in more dimensions, more imaginality and multiple aspects.

Description

technical field [0001] The invention relates to a three-dimensional modeling and visual display technology based on SVG map data, belonging to the technical field of three-dimensional graphics. Background technique [0002] SVG (Scaleable Vector Graphics, Scalable Vector Graphics) is a language that uses XML (Extensible Markup Language, Extensible Markup Language) to describe two-dimensional graphics and drawing programs. SVG graphics have small storage capacity, small input load to the network, small network transmission delay, support interaction and animation, and image zoom-in and zoom-out operations will not distort the image. Due to its many advantages, SVG is very suitable as the carrier of Web two-dimensional maps for lightweight applications. [0003] With the rapid development of WebGIS technology, the three-dimensional network map with the characteristics of three-dimensionality, orientation, intuition and authenticity has also begun to enter the public's field o...

Claims

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Application Information

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IPC IPC(8): G06T17/05G06T15/00G06T3/00
Inventor 苏贵民王梦龙王国春李玉展王天瑞
Owner SHANGHAI SEARI INTELLIGENT SYST CO LTD
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