Recognition and early warning method of vehicle-borne traffic signal and symbol based on machine vision

Abstract

The present invention provides a recognition and early warning method of a vehicle-borne traffic signal and symbol based on machine vision. The method comprises a step of combining electronic map information, starting vehicle-borne camera, and detecting the video information of an intersection signal lamp, a step of carrying out framing processing on video information captured by the camera, and obtaining an image set sequence, a step of carrying out preprocessing on the image, wherein the preprocessing comprises the preprocessing compression, the gray processing, and the binarization processing of the image, a step of determining an alternative detection area through rectangle scanning, counting the red, green, yellow and black pixels of the area, and judging whether a current area is a traffic lamp and the state of the traffic lamp according to the counting result, a step of carrying out circle and triangle detection at the same time, and matching and judging traffic sign information, and a step of displaying a recognition result in a voice broadcasting or screen displaying manner, and thus carrying out early warning of the driver. The method has the advantages of low cost, convenient implementation, a chromatopsia driver can be assisted to identify traffic signals and traffic signs, and the range of application is wide.

Description

technical field [0001] The invention relates to the technical field of intelligent traffic early warning, in particular to a machine vision-based identification and early warning method for vehicle-mounted traffic signals and signs. Background technique [0002] With the development of the transportation industry, the problem of color-blind driving has attracted more and more attention. In China, people who are colorblind cannot obtain the right to drive a motor vehicle. This is inconvenient for color-blind people, and may force color-blind people to use improper means to obtain driving qualifications, which is not conducive to social stability. At present, a kind of driving glasses that can assist color blindness has been produced on the market, which is converted and recognized by applying the complementary color principle to the color blind side view with a fixed brightness ratio. Given that the current visual technology is immature and is greatly affected by light, it ...

AI Technical Summary

Problems solved by technology

[0004] However, the existing technologies all need to modify the traffic signal equipment to a certain extent, which has the disadvantages of high cost, difficult implementation, limited application range, etc., and it is difficult to meet the needs of the vast number of colorblind groups in China.

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