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Establishment of 3D map database, transmission method and device of 3D map data

A technology of three-dimensional map and building method, applied in the field of navigation, can solve the problems of three-dimensional navigation data consuming a lot of traffic, long loading delay, etc.

Active Publication Date: 2019-03-15
BAIDU INT TECH (SHENZHEN) CO LTD +1
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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 device for establishing a 3D map database and transmitting 3D map data, which solves the problem that the existing 3D navigation data consumes a lot of traffic and has a long loading delay during the loading process.

Method used

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  • Establishment of 3D map database, transmission method and device of 3D map data
  • Establishment of 3D map database, transmission method and device of 3D map data
  • Establishment of 3D map database, transmission method and device of 3D map data

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Embodiment 1

[0046] figure 1 It is a flowchart of a method for establishing a three-dimensional map database provided by Embodiment 1 of the present invention. The method of this embodiment can be executed by a device for establishing a three-dimensional map database, which can be implemented in the form of hardware and / or software, and generally can be integrated into a map server for providing three-dimensional map data, for direct or indirect To provide three-dimensional map data for a client installed in a terminal, the above-mentioned terminal may include but not limited to any one of a mobile phone, a tablet computer or a vehicle-mounted terminal.

[0047] refer to figure 1 , the method for establishing the three-dimensional map database includes:

[0048] S110. Decompose the map data of at least two three-dimensional road models into private road data and public road data, where each three-dimensional road model has a corresponding three-dimensional road model identifier.

[0049...

Embodiment 2

[0078] figure 2 It is a flow chart of a method for transmitting three-dimensional map data provided by Embodiment 2 of the present invention. This embodiment is based on the technical solution of the first embodiment above. The method of this embodiment may be executed by a navigation server cooperating with the client, or may also be executed by a map server that establishes a three-dimensional map database in cooperation with the navigation server.

[0079] Preferably, the map server for establishing the three-dimensional map database is a navigation server, that is, the establishment of the map database and the transmission of three-dimensional map data are all completed by a server (called an integrated server). In this embodiment, it is described by taking the transmission method of 3D map data completed by the above-mentioned integrated server as an example.

[0080] see figure 2 , the transmission method of the three-dimensional map data includes:

[0081] S210. A...

Embodiment 3

[0102] image 3 It is a flow chart of a method for transmitting three-dimensional map data provided by Embodiment 3 of the present invention. This embodiment is based on the technical solutions of the foregoing embodiments. The method of this embodiment can be executed by a client, and the client is used in cooperation with the integrated server or the navigation server in the second embodiment, and the client can be installed in a terminal with a network connection function.

[0103] refer to image 3 , the transmission method of the three-dimensional map data includes:

[0104] S310. If it is determined that the 3D map data loading condition is satisfied, send a map data download request of the target 3D road model to the server, wherein the map data download request includes the target 3D road model identifier, and each 3D road model has a corresponding 3D road model logo.

[0105] Wherein, determining that the loading conditions of the three-dimensional map data are sa...

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Abstract

The embodiment of the environment discloses a method and device for establishing a three-dimensional map database and transmitting three-dimensional map data. The method for establishing the three-dimensional map database comprises the steps that map data of at least two three-dimensional road models is decomposed into private road data and public road data, and each three-dimensional road model comprises a three-dimensional road model identifier; a public road data packet is generated according to the public road data corresponding to the three-dimensional road models; public road indexes corresponding to the three-dimensional road models are determined according to the public road data packet; the public road data packet, the three-dimensional road model identifiers, the private road data corresponding to the three-dimensional road model identifiers and the public data indexes corresponding to the three-dimensional road model identifiers are correspondingly stored in the three-dimensional map database. According to the scheme of the embodiment, the problems that too much flow needs to be consumed in the existing three-dimensional navigation data loading process, and loading delay is very long are solved.

Description

technical field [0001] Embodiments of the present invention relate to navigation technology, and in particular to a method and device for establishing a three-dimensional map database and transmitting three-dimensional map data. Background technique [0002] With the development and progress of science and technology, there are more and more overpasses on the road, which makes the road situation more and more complicated, causing some travel users to rely on navigation functions to reach their destination smoothly from the starting point. [0003] Currently, there are many navigation methods, including offline navigation and online navigation. Among them, offline navigation refers to users downloading and storing map resources in advance under network conditions and storing them in the terminal installed with the application program client, so that when the map resource is needed, the client can complete it without the network support of the terminal. Route query, the advan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F16/29G01C21/32
CPCG01C21/32G06F16/29
Inventor 洪祈泽
Owner BAIDU INT TECH (SHENZHEN) CO LTD
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