Three-dimensional urban building construction method
A construction method and architectural technology, applied in neural learning methods, neural architecture, structured data retrieval, etc., can solve problems such as manual collection, gaps, and inaccurate accuracy, and achieve cost-saving effects
Active Publication Date: 2020-11-27
南京烽火星空通信发展有限公司
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Problems solved by technology
[0004] (1) High cost: The height information of buildings in the city needs to be collected manually. When facing a large number of building groups and even satellite images covering the whole country, a lot of manpower is required to support
When there is not a large amount of human resources, a third party is required to purchase map data, and the maintenance cost is high
[0005] (2) Accuracy is not guaranteed: According to data surveys of different manufacturers, there are a large number of cases where the height of buildings in 3D city maps does not match the actual situation or even is far behind
[0006] (3) The coverage of cities is small: only major cities are covered, and there is a lack of 3D map construction data for some remote cities in non-main urban areas
[0007] (4) Poor real-time performance: urban buildings have been in the process of continuous development and iteration, and manual marking of 3D maps cannot achieve real-time data update
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[0050] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0051] A 3D urban building construction technology, FH-3D-Map-Rendering technical process is as follows figure 1 As shown, it is mainly divided into five parts, which specifically include the following steps;
[0052] Step 1, image contour extraction, as follows:
[0053] Step 1.1, obtain the color satellite image of the city from the national geographic information public service platform, and cut it into a plurality of small image blocks of 572*572;
[005...
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The invention discloses a three-dimensional city building construction method, which belongs to the technical field of three-dimensional city building construction, and specifically comprises five parts: image contour extraction, a height prediction network, building information matching and vector data rendering. One-key generation is used for efficiently, accurately and automatically identifyingbuilding information of a city in real time, and a one-key three-dimensional construction operation process is realized. According to satellite map data disclosed on a national geographic informationpublic service platform, each city in China can be comprehensively covered, and a three-dimensional effect can be automatically updated.
Description
technical field [0001] The invention belongs to the technical field of three-dimensional urban building construction, and in particular relates to a three-dimensional urban building construction method. Background technique [0002] With the opening of satellite image data covering the whole world, the geographical images of cities can be displayed intuitively, but on two-dimensional color images, it is impossible to directly obtain city information in satellite images, such as the coverage rate of urban buildings and the distribution of building heights , The distribution of building use attributes, etc. Therefore, there are manufacturers on the market for drawing products for 3D city maps (3DMap of the City), such as Baidu and AutoNavi. [0003] The existing 3D map recognition products currently on the market have the following four defects: [0004] (1) High cost: The height information of buildings in the city needs to be collected manually. When facing a large number ...
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IPC IPC(8): G06F16/29G06N3/04G06N3/08
CPCG06F16/29G06N3/08G06N3/045Y02A30/60
Inventor 廖闻剑张明月王立群朱和军王康林岩
Owner 南京烽火星空通信发展有限公司