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Traffic sign recognition method and device

A technology for traffic sign recognition and traffic signs, which is applied in the field of traffic sign recognition and devices, can solve the time-consuming problems of traffic sign recognition, and achieve the effects of saving calculation time, improving accuracy, and improving efficiency

Active Publication Date: 2009-04-08
NEUSOFT REACH AUTOMOBILE TECH (SHENYANG) CO LTD
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Problems solved by technology

[0012] The invention solves the time-consuming problem of identifying traffic signs in the prior art

Method used

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  • Traffic sign recognition method and device
  • Traffic sign recognition method and device

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Embodiment Construction

[0036] Through the analysis of existing traffic sign recognition methods, it can be obtained that for color extraction based on RGB space, the division of color regions is realized by examining the component differences of the three spatial channels R, G, and B. With the aforementioned example of the red pixel, the component difference is the difference between the absolute values ​​of the components of the three channels, so the requirement for the accuracy of the component value is relatively high. However, due to the influence of illumination and the like, there may be deviations in obtaining the component value from the image captured by the camera device. In addition, for different environmental conditions of shooting images such as lighting, the determination of the threshold range required for color region division in RGB space often depends on experience, which also increases the deviation of color region division.

[0037] For the color extraction based on HSI space, ...

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Abstract

The invention relates to a traffic sign identification method and a device thereof. The traffic sign identification method adopts relative variables of three components in an RGB space as new variables for dividing a color region; the new relation of corresponding variables in the RGB and the HIS spaces is obtained by the variables and the expression of color tone in the transformation formula of the universal RGB-HIS spaces, and a first threshold value scope in the color region is divided according to a color tone variable H in the HSI space; and a second threshold value scope of the relative variables in the corresponding RGB space is obtained, thereby abstracting the color of an image to achieve to obtain the interested region of the traffic sign according to the value of the relative variables obtained from the image. The traffic sign identification method and the device thereof have good real time, as well as higher identification efficient and accuracy.

Description

technical field [0001] The invention relates to a traffic sign recognition method and device. Background technique [0002] Traffic signs are an important part of the traffic system, which have the functions of regulating traffic, warning drivers, and providing useful information. Traffic signs have distinct color characteristics, mainly red, yellow, and blue. Existing vision-based traffic sign recognition methods generally include the following steps: firstly, an image containing traffic signs is obtained through a camera device, and then the region of interest of the traffic sign is obtained from the image, and then segmented according to its shape, and template matching or A classification method for identifying traffic signs. Therefore, obtaining the ROI of traffic signs is one of the key steps in recognizing traffic signs. [0003] Existing methods for obtaining ROIs of traffic signs are mainly realized through color extraction based on Hue, Saturation and Intensity ...

Claims

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Application Information

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IPC IPC(8): G08G1/00G06K9/00
Inventor 刘威董卉陈雪袁淮
Owner NEUSOFT REACH AUTOMOBILE TECH (SHENYANG) CO LTD
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