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Fast rendering method for three-dimensional noise map of large-area network

A noise map, three-dimensional network technology, applied in image data processing, 3D modeling, instruments, etc., to reduce the amount of data and workload, improve efficiency, and improve the speed of data reading and querying

Inactive Publication Date: 2018-01-09
SUN YAT SEN UNIV
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the existing problems of network three-dimensional noise map rendering and drawing, and to provide a real-time, fast and versatile rendering method for large-area network three-dimensional noise maps

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  • Fast rendering method for three-dimensional noise map of large-area network
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  • Fast rendering method for three-dimensional noise map of large-area network

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Embodiment Construction

[0022] The drawings are for illustrative purposes only, and should not be construed as limitations on this patent; in order to better illustrate this embodiment, some parts in the drawings will be omitted, enlarged or reduced, and do not represent the size of the actual product;

[0023] For those skilled in the art, it is understandable that some well-known structures and descriptions thereof may be omitted in the drawings.

[0024] Such as figure 1 As shown, the present invention proposes a fast rendering method for a three-dimensional noise map of a large area network, which mainly includes three parts: storing the basic data of a large area in the form of map tiles, and loading the basic data of the corresponding area according to the current map browsing range , Use the interpolation method to fill the color inside the rectangular grid according to the noise value of the noise receiving point. The whole network 3D noise map rendering process is as follows:

[0025] Step...

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Abstract

The invention provides a fast rendering method for a three-dimensional noise map of a large-area network. A large-area network is segmented into a plurality of small-area maps according to a TMS segmentation rule; basic data of the large area are stored into data block units corresponding to the small areas according to a geographical location; before rendering, with a tile map service function, basic data of a corresponding tile region are loaded according to a map browsing range; and when rendering is carried out, color values are given to all noise receiving points according to different noise values, filling is carried out on the color inside a rectangular grid by using an interpolation method, and other grids on the same surface are drawn by using the same rendering control method. According to the invention, because of the way of storing the basic data by means of a map tile, data can be read and inquired rapidly; and with the method of loading the basic data of the map tile based on needs, the data volume and work load of rendering and drawing within the same time can be reduced and a three-dimensional noise map of a network can be drawn rapidly and smoothly.

Description

technical field [0001] The invention relates to the technical field of network three-dimensional noise map rendering and drawing, and more particularly, relates to a fast rendering method for a large-area network three-dimensional noise map. Background technique [0002] The 3D noise map can not only show the noise distribution on the ground, but also show the noise distribution on the surface of the building. When the user performs operations such as zooming and panning on the 3D noise map on the browser, the browser needs to re-render the map screen. Therefore, on the browser, the rendering and display of the 3D noise map in a large area is a frequent and real-time The process of repainting. In addition, it is unreasonable to request and load all the data in the area from the data server for rendering and drawing before rendering. Not only the amount of data is large, the loading time is long, and the efficiency is low, it will also occupy too much computer memory space. ...

Claims

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Application Information

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IPC IPC(8): G06T17/05G06T19/20
Inventor 蔡铭蓝子钦王海波张智伟
Owner SUN YAT SEN UNIV
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