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Layered image data real-time drawing method and system

A technology for real-time rendering of image data, applied in image data processing, structured data retrieval, geographic information databases, etc., can solve problems such as real-time rendering of layered image data, achieve optimized display effects, ensure accuracy, and prevent image data Blurred or jagged effect

Active Publication Date: 2022-07-29
四川见山科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the embodiment of the present invention provides a method and system for real-time rendering of layered image data to solve the problem of real-time rendering of layered image data in the prior art

Method used

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  • Layered image data real-time drawing method and system
  • Layered image data real-time drawing method and system
  • Layered image data real-time drawing method and system

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Embodiment 1

[0070] See Figure 1-Figure 7 , the embodiment of the present invention provides a real-time rendering method of layered image data, the method includes the following steps:

[0071] S1: save the tile set of the regional terrain to the server, and publish the first network address;

[0072] Specifically include:

[0073] S11: Segment the terrain data based on the segmentation method of TMS to obtain terrain slice.terrain data;

[0074] S12: Store the terrain slice.terrain data in the server, and publish the first network address.

[0075] In this embodiment, the global terrain data is downloaded from the geospatial data cloud platform, which also includes terrain data of different levels in each region. Divide the terrain data according to several fixed scales to obtain tiles, each tile is saved as an independent .terrain file, and then transplant all the .terrain files to the HTML folder of the NGINX server, and publish the terrain data URL of the service.

[0076] S2: s...

Embodiment 2

[0164] see Figure 7 , an embodiment of the present invention provides a real-time rendering system for layered image data, the system includes:

[0165] Tile storage module: store the tile set of the regional terrain in the server, and publish the first network address;

[0166] Image slice storage module: store the image service directory of each level of images in the server, and publish the second network address, wherein the image service directory at least includes the slice set, the level where the slice is located, the row, the column and the storage address;

[0167] Configuration file generation module: generate a JSON configuration file according to the information in the first network address and the second network address;

[0168] Terrain grid building module: obtain the first network address of the current viewport area, read the corresponding tile according to the first network address, and construct the terrain grid of the current viewport area;

[0169] Sli...

Embodiment 3

[0172] Corresponding to the above method embodiments, the embodiments of the present disclosure further provide a real-time rendering device for layered image data. The drawing methods can refer to each other correspondingly.

[0173] The electronic device may include: a processor, and a memory. The electronic device may also include one or more of multimedia components, input / output (I / O) interfaces, and communication components.

[0174]Wherein, the processor is used to control the overall operation of the electronic device, so as to complete all or part of the steps in the above-mentioned OD passenger flow prediction method. Memory is used to store various types of data to support operation on the electronic device, such data may include, for example, instructions for any application or method to operate on the electronic device, as well as application-related data such as contacts Data, messages sent and received, pictures, audio, video, and more. The memory can be impl...

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Abstract

The invention belongs to the technical field of graph drawing, and provides a layered image data real-time drawing method and system, and the method comprises the steps: storing a tile set of a regional terrain into a server, and publishing a first network address; storing the image service catalog of each level of image into a server, and issuing a second network address; a JSON configuration file is generated; reading a corresponding tile according to the first network address, and constructing a terrain grid of the current viewport area; obtaining a second network address of the current viewport area, reading each level of image service catalog according to the second network address, constructing an index address by using information in the image service catalog, and reading slices of each level of the current viewport area according to the index address; and sequentially mixing the slices of all hierarchies and then outputting an image, and drawing the image on the terrain grid. The method is used for solving the technical problems of access, indexing and drawing of massive tile data and serious layer fracture and rasterization at joints of different levels in the prior art.

Description

technical field [0001] The invention relates to the field of graphic rendering, and in particular, to a method and system for real-time rendering of layered image data. Background technique [0002] With the development of computer software and hardware, 3D terrain visualization technology has been widely developed and applied, and its application fields involve many industries such as military, agriculture, transportation, and smart cities. [0003] The key technology of 3D terrain visualization lies in the real-time rendering of 3D maps. Because 3D map rendering has the characteristics of complex data structure, multi-scale, large data volume and strong interaction, it is difficult to carry out unified data processing and analysis. At present, the mainstream method of data processing is to realize spatial grid division of data, to establish uniform-sized tile data with levels from low to high and data volume from small to large. After the client initiates a request, the ti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T17/05G06F16/29G06T19/20
CPCG06T17/05G06F16/29G06T19/20
Inventor 罗德宁蒋海军李洋高旻段强彭林春陶李郭美
Owner 四川见山科技有限责任公司
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