Construction method of 3D digital earth platform suitable for water conservancy engineering application
A water conservancy engineering, three-dimensional digital technology, applied in special data processing applications, 3D modeling, image data processing, etc., can solve the problems of lack of water conservancy engineering features, difficulty meeting the needs of water conservancy engineering applications, and spending a lot of energy. The effect of the high-precision texture effect
Active Publication Date: 2019-02-26
YELLOW RIVER ENG CONSULTING +1
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Problems solved by technology
However, in water conservancy applications, the processing, analysis and calculation of terrain are very demanding, and the performance effect of using the above-mentioned technical means is poor. For example, when creating a channel, if the channel is represented by a model, the channel and the terrain are separated and must be integrated. takes a lot of effort
The relatively mature 3D digital earth platform now uses multi-level terrain images to organize 3D digital earth data, and uses engineering models to represent engineering features. There is no means to represent water conservancy engineering features from the bottom layer, and it is difficult to meet the application requirements of water conservancy projects.
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Embodiment Construction
[0025] The three-dimensional digital earth platform construction method suitable for water conservancy engineering application of the present invention comprises the following steps:
[0026] 1. Build a resource manager to support data resources;
[0027] The data resources include: 1. image data, including latitude and longitude coordinates in tiff format, and tile numbering in jpg format; 2. terrain data, including latitude and longitude coordinates in tiff format, and tile numbering in raw format; 3. 3D models; 4. , vector annotation;
[0028] In order to meet the requirements of hydraulic engineering applications for terrain accuracy and terrain scalability, the terrain data is stored using a three-dimensional terrain compression algorithm, and the three-dimensional terrain compression algorithm includes:
[0029] a. Terrain tile segmentation: project the global terrain data according to latitude and longitude, and divide it into two root nodes, the eastern hemisphere and...
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The invention discloses a three-dimensional digital earth platform construction method suitable for hydraulic engineering application. The method comprises the following steps that 1, a resource manager is constructed and used for supporting data resources; 2, a digital earth browser is constructed so as to achieve rendering for a virtual digital earth; 3, a network resource server is constructed, deployment is carried out through the network, basic sources are deployed to the server, and a client side browses corresponding resources through the network; 4, a water conservancy scene editor is constructed and used for editing and developing a water conservancy three-dimensional scene. The method has the advantages that by means of the method for representing hydraulic engineering through the digital earth technology, a hydraulic engineering editing environment is provided, and a real-effect hydraulic engineering can be rapidly planned on a three-dimensional platform. By means of the high-precision mixed terrain technology, and the engineering is allowed to be expressed based on the optimal ultrahigh precision terrain; if design parameters of a channel are given, the terrain containing the corresponding channel can be generated; in addition, a user-defined image layer is overlaid on a satellite image, and therefore a mapping effect with higher precision is achieved.
Description
technical field [0001] The invention relates to a method for constructing a three-dimensional digital earth platform, in particular to a method for constructing a three-dimensional digital earth platform suitable for water conservancy engineering applications. Background technique [0002] At present, 3D geographic information systems such as Google Earth, Skyline, etc. use 3D GIS (Geographic Information System, translated as geographic information system in Chinese) software, usually using a standard quadtree structure to manage and load terrain and images, and by adding 3D The model realizes the construction of a complete 3D scene. This technology is simple and efficient, and can quickly create three-dimensional scenes such as digital cities and digital campuses. However, in water conservancy applications, the processing, analysis and calculation of terrain are very demanding, and the performance effect of using the above-mentioned technical means is poor. For example, wh...
Claims
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IPC IPC(8): G06F16/29G06T17/05
CPCG06F16/29G06T17/05
Inventor 王军良张楠何刘鹏
Owner YELLOW RIVER ENG CONSULTING