Modeling method and system based on DEM real three-dimensional map and greenway
A modeling method and three-dimensional map technology, applied in the three-dimensional field, can solve the problems of partial semantic information loss of geometric position information, unable to fully reflect the objective world, etc., achieve great innovation and significance, and facilitate the effect of engineering construction.
Inactive Publication Date: 2016-01-27
SHENZHEN POLYTECHNIC
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We live in a real three-dimensional real world, and the planning and design drawing is just a simplified process of projecting all the various geographical objects in the three-dimensional space to the two-dimensional plane, resulting in the geometric position in the third dimension (that is, the vertical direction) The loss of information, spatial topology information and partial semantic information cannot fully reflect the objective world
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[0082] figure 1 , 3 Show the flow chart of the modeling method based on DEM true three-dimensional map and greenway that the present invention provides, and its detailed description is as follows:
[0083] Step S1, use the Bigemap map interceptor to intercept the remote sensing base map of the designated area on the map downloaded by BigeMap and correct the base map through the measured GPS data;
[0084] BIGEMAP map interceptor" downloads the map. The downloaded map has latitude and longitude, but the coordinates of the map intercepted by Daoge BIGEMAP are exactly the same as the coordinate accuracy of BIGEMAP. Therefore, its accuracy depends entirely on the accuracy of BIGEMAP, and BIGEMAP has coordinate encryption In the case of offset, Daoge BIGEMAP will also have coordinate offset and a little deviation, which is basically about 5M, so it is necessary to perform grid correction on the "base map". For new and changed buildings, we Make multiple comparisons on the map sof...
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The invention relates to a modeling method based on a DEM real three-dimensional map and greenways. The modeling method comprises the steps of: A, intercepting a remote sensing base map of a specified region on a map downloaded from BigeMap by utilizing a BigeMap intercepting device; B, vectorizing factors for intercepting the base map of the specified region; C, conducting altitude data assignment and altitude division on the vectorized base map of the specified region in the DEM; D, respectively manufacturing three-dimensional models in MapGIS and 3DMAX according to the base map assigned with the altitude data; E, integrating a MapGIS three-dimensional model and a 3DMAX three-dimensional model in the MapGIS and pasting materials; F, and carrying out spatial analysis and attribute query on the three-dimensional model after materials pasting. The modeling method and the modeling system achieve the organic combination of functions such as ecology, recreation and culture, establish a slow-moving traffic system, apply the GIS-based real three-dimensional model to the new field of traffic construction, facilitate engineering construction, and have great innovativeness and significance.
Description
technical field [0001] The invention belongs to the field of three-dimensional technology, and in particular relates to a modeling method and system based on a DEM true three-dimensional map and a greenway. Background technique [0002] MapGIS is the world's first GIS software platform with "cloud" features. The new generation of MapGIS10 cloud GIS software does not provide users with individual software products or services in the form of solid state like previous GIS software, but provides them to users through the Internet in the form of self-customization, and the users themselves aggregate and reassess according to their needs. Constitute various GIS tools, and finally migrate to form the industry applications you need. These tools can be plugged and combined arbitrarily according to the wishes of users to build a wealth of application functions, and truly realize intelligent customization of their own application software and solutions, so as to realize a more intelli...
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IPC IPC(8): G06T17/05
Inventor 袁媛向怀坤陈建华
Owner SHENZHEN POLYTECHNIC