Track road sign recognition method and system

An identification method and road sign technology, which are applied in the field of track road sign identification methods and systems, can solve the problems of reducing the safety and comfort of autonomous parking, and achieve the effects of improving safety and comfort, and improving accuracy and reliability.

Active Publication Date: 2019-09-27
GUANGZHOU XIAOPENG CONNECTIVITY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it has been found in practice that due to the particularity of the parking scene, especially the multi-storey indoor parking lot, in order to improve the safety and comfort of autonomous parking, there are usually many trajectory road signs in the parking lot, such as turning road signs, Speed ​​bump road signs, etc. If the car does not consider these trajectory road signs during autonomous parking, and does not perform control operations such as early deceleration, the safety and comfort of autonomous parking will be reduced

Method used

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  • Track road sign recognition method and system
  • Track road sign recognition method and system
  • Track road sign recognition method and system

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0072] see figure 1 , figure 1 It is a schematic flowchart of a method for identifying track landmarks disclosed in an embodiment of the present invention. like figure 1 As shown, the method may include the following steps.

[0073] 101. The trajectory landmark recognition system acquires the moving features of the vehicle during parking, and extracts key features from the moving features through multiple sliding windows.

[0074] In the embodiment of the present invention, the trajectory landmark recognition system can recognize the trajectory landmarks during the user's driving and parking process, and combine the trajectory landmarks with the trajectory map. When the vehicle approaches the same parking lot again, based on the established trajectory The track map of road signs, start the autonomous parking function for autonomous parking, without user manipulation, it can slow down in advance when approaching the track road signs such as barrier gates, turning points, and...

Embodiment 2

[0114] see figure 2 , figure 2 It is a schematic flow chart of another track landmark recognition method disclosed in the embodiment of the present invention. like figure 2 As shown, the method may include the following steps.

[0115] 201. The trajectory landmark recognition system acquires the moving features of the vehicle during the parking process, and extracts key features from the moving features through multiple sliding windows.

[0116] In the embodiment of the present invention, the movement feature is some specific information of the vehicle during parking, which may include but not limited to speed, forward acceleration, vehicle stationary time, pitch angular velocity, and yaw angular velocity.

[0117] In the embodiment of the present invention, the sensor for acquiring the movement feature may include but not limited to a wheel speedometer, an accelerometer, a visual sensor, a gyroscope, and the like.

[0118] 202. The track landmark recognition system cal...

Embodiment 3

[0153] see image 3 , image 3 It is a structural schematic diagram of a track roadmark recognition system disclosed in an embodiment of the present invention. like image 3 As shown, the system can include:

[0154] The extraction unit 301 is configured to acquire the moving features of the vehicle during the parking process, and extract key features from the moving features through multiple sliding windows.

[0155] In the embodiment of the present invention, the movement feature is some specific information of the vehicle during parking, which may include but not limited to speed, forward acceleration, vehicle stationary time, pitch angular velocity, and yaw angular velocity.

[0156] In the embodiment of the present invention, the sensor for acquiring the movement feature may include, but not limited to, a wheel speedometer, an accelerometer, and a gyroscope.

[0157] In the embodiment of the present invention, the sliding window is a window with a specific length that...

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Abstract

The embodiment of the invention relates to the technical field of vehicle intelligent auxiliary driving, and discloses a track road sign recognition method and system. The method comprises the steps of obtaining the moving characteristics of a vehicle during a parking process, and extracting the key characteristics from the moving characteristics through a plurality of sliding windows; calculating the recognition credibility of a target track road sign corresponding to the key characteristic at the junction of the sliding window according to the key characteristic; determining an optimal target track road sign from the target track road signs according to the identification credibility; and obtaining the road sign information of the optimal target track road sign, and associating the road sign information with a position corresponding to the optimal target track road sign in the track map. By implementing the embodiment of the invention, the track road sign can be identified, the track road sign is combined with the track map, and the safety and comfort of the autonomous parking are improved.

Description

technical field [0001] The invention relates to the technical field of vehicle intelligent assisted driving, in particular to a method and system for identifying track road signs. Background technique [0002] With the rapid development of the automobile industry, people have higher and higher requirements for the functions of automobiles. Among them, autonomous memory parking (autonomous parking) is a high-level automatic parking. After building the parking lot map, the vehicle can automatically drive to the memory parking space or automatically find a parking space for parking. However, it has been found in practice that due to the particularity of the parking scene, especially the multi-storey indoor parking lot, in order to improve the safety and comfort of autonomous parking, there are usually many trajectory road signs in the parking lot, such as turning road signs, Speed ​​bump road signs, etc. If the car does not consider these trajectory road signs during autonomou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00G06K9/46G06K9/62
CPCG06V20/586G06V10/462G06F18/22
Inventor 柴文楠刘中元蒋少峰李良周建潘力澜
Owner GUANGZHOU XIAOPENG CONNECTIVITY TECH CO LTD
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