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Traffic sign identification system

A technology for recognition systems and traffic signs, applied in character and pattern recognition, image analysis, instruments, etc., can solve the problems of less consideration of comprehensive road environment information, no ground markings, etc., and achieve the effect of reducing impact

Active Publication Date: 2015-02-18
WUHU LION AUTOMOTIVE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0003] However, the current vehicle video processing system has less consideration for the comprehensive information of the road environment. There is no correlation model between ground markings, traffic lights, and traffic signs. Most of them still recognize and analyze traffic signs, traffic markings, and traffic signs separately. Signal light information

Method used

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Embodiment Construction

[0017] Such as figure 1 As shown, the present invention acquires the external road environment image in front of the vehicle during the driving process from the camera installed on the rear side of the interior rearview mirror of the vehicle. Install a high-dynamic camera at the position of the interior rearview mirror of the vehicle to collect traffic sign information (including traffic markings, traffic signs, and traffic lights) on the road ahead of the road. Recognize various traffic signs from road environment images respectively.

[0018] Such as figure 2 As shown, the recognition system recognizes the traffic marking process as follows:

[0019] (1) Carry out inverse projection transformation to the image, and convert the image into a top view;

[0020] (2) Calculate the segmentation threshold in the small neighborhood, and then use the threshold to segment the area with higher brightness to obtain the traffic marking area of ​​interest in the image.

[0021] (3) A...

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Abstract

The invention discloses a traffic sign identification system. The traffic sign identification system is characterized by comprising a high-dynamic camera which is installed at the position of an inner rear-view mirror of a vehicle, and the system collects traffic sign information of the road pavement ahead, then identifies traffic markings, traffic lights and traffic signs respectively from a road environment image and establishes corresponding space-time correlation models. Due to the structure and a method, time-space correlation criterions of traffic sign identification results are established by combination of time and space relationship, various traffic signs are identified in the same image, the traffic sign identification results are fused to acquire a credible output result, and influence caused by traffic sign identification error on intelligent driving is reduced.

Description

technical field [0001] The invention relates to the field of intelligent traffic, in particular to a traffic sign recognition system. Background technique [0002] At present, in terms of smart car driving, visual sensors have been widely used because of their low cost and various types of recognition. Various instruction information in the road environment, such as ground markings, traffic lights, traffic signs, etc., have strong instructions for driving, and the settings between them have a strong correlation. [0003] However, the current vehicle video processing system has less consideration for the comprehensive information of the road environment. There is no correlation model between ground markings, traffic lights, and traffic signs. Most of them still recognize and analyze traffic signs, traffic markings, and traffic signs separately. Signal light information. [0004] Establish a reasonable traffic sign association model in the recognition system to provide reaso...

Claims

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Application Information

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IPC IPC(8): G06K9/62G06K9/46G06T7/00
CPCG06V20/582G06V20/588
Inventor 谷明琴陈效华王海孙锐
Owner WUHU LION AUTOMOTIVE TECH CO LTD
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