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Sensing data extraction method and system

A technology for perceiving data and extracting methods, applied in structured data retrieval, geographic information database, special data processing applications, etc., can solve problems such as large data volume, achieve the effect of small memory, increase transmission speed, and improve production efficiency

Active Publication Date: 2020-01-03
WUHAN ZHONGHAITING DATA TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the technical problems existing in the prior art, the present invention provides a method and system for extracting sensing data to solve the problem that the amount of data collected by sensing devices is relatively large

Method used

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  • Sensing data extraction method and system
  • Sensing data extraction method and system

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Embodiment 1

[0045] Embodiment 1 provided by the present invention is an embodiment of a sensing data extraction method provided by the present invention. This embodiment includes: Step 1, obtaining the current location, and loading the map data within the set range of the current location.

[0046] Specifically, the acquired current location is GPS location, and the set range can be set according to the accuracy of GPS location or the range and accuracy of sensing data, which is 100 meters in the embodiment provided by the present invention. Therefore, step 1 is specifically to obtain GPS positioning results and load high-precision map data within a radius of 100 meters.

[0047] Step 2, match the lane where the vehicle is located according to the positioning result, and generate the third-order curve equation of the lane line of the map data: y 1 =a 1 +b 1 +c 1 x i 2 +d 1 x i 3 .

[0048] a 1 Indicates a constant coefficient, b 1 Indicates the first-order coefficient, c 1 Ind...

Embodiment 2

[0065] Based on the content of the foregoing embodiments, as an optional embodiment, figure 2 A schematic structural diagram of a sensing data extraction system provided by an embodiment of the present invention, as shown in figure 2 As shown, the system includes: a map data acquisition module 101 , a map data curve equation generation module 102 , a perception data curve equation generation module 103 and a perception data extraction and uploading module 104 .

[0066] The map data acquiring module 101 is configured to acquire the current location, and load the map data within the set range of the current location.

[0067] The map data curve equation generation module 102 is configured to match the lane where the vehicle is located according to the positioning result, and generate a third-order curve equation of the lane line of the map data.

[0068] The perception data curve equation generation module 103 is used for processing the perception data of the lane line in fr...

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Abstract

The invention relates to a sensing data extraction method. The sensing data extraction method comprises the steps of acquiring current positioning, and loading map data within a setting range of the current positioning; matching a lane where a vehicle is located according to a positioning result, and generating a third-order curve equation of a lane line of the map data; processing sensing data ofa visual sensor on the lane line in front of a vehicle body, and generating a third-order curve equation of the lane line of the sensing data; and performing curve similarity matching on the third-order curve equations of the lane lines of the map data and the sensing data, and extracting and uploading the sensing data of which similarity is lower than a set threshold. By the method, the data quantity transmitted to a cloud is greatly reduced, the data transmission broadband application rate and the transmission speed are greatly improved, the memory occupied by cloud processing data quantityis smaller, so that the fabrication efficiency is improved.

Description

technical field [0001] The invention relates to the field of electronic maps, in particular to a method and system for extracting perception data. Background technique [0002] Crowdsourcing map is a new type of network geographic information service, which has the advantages of large amount of data, rich information and low cost, and has developed into an important source of geographic information. Crowdsourcing map is the result of collaborative editing by non-professional users limited by factors such as capacity and spatial distribution. In the process of crowdsourcing mapping, visual devices with cameras or optical devices such as lasers and radars are installed on the car body. During the driving process, the visual devices and optical devices will collect the lane lines of the road, the color of the lane lines, and the signs. Signs, traffic lights and other data. After receiving the data through an application program, it is packaged and then transmitted to its own ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C21/30G06F16/29
CPCG01C21/30G06F16/29
Inventor 尹阳李涛许伟宝刘奋
Owner WUHAN ZHONGHAITING DATA TECH CO LTD
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