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Method and system for rapidly positioning road guide sign

A technology of guiding signs and positioning methods, which is applied in the direction of instruments, character and pattern recognition, computer components, etc., can solve the problems of unsatisfactory positioning of road guiding signs, slow positioning of rectangular shape features, etc., and achieve accuracy Improving, shortening time, robust effect

Active Publication Date: 2012-07-25
SUN YAT SEN UNIV
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  • Abstract
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AI Technical Summary

Problems solved by technology

However, the detection of the rectangular shape features of road guide signs is easily affected by various external occlusions and interferences, which makes the positioning effect of road guide signs unsatisfactory, and the speed of locating the rectangular shape features is slow

Method used

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  • Method and system for rapidly positioning road guide sign
  • Method and system for rapidly positioning road guide sign
  • Method and system for rapidly positioning road guide sign

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Embodiment Construction

[0048] Depend on figure 1 Shown, a kind of fast location method of road guide sign, this method step comprises:

[0049] A. Acquire road images;

[0050] B. Divide the obtained road image into upper and lower two parts of the image;

[0051] C, adopt the blue detection model based on RGB color model, carry out the acquisition of valid candidate area to upper part image;

[0052] D. Perform horizontal long straight line detection on the obtained effective candidate area, and then locate the guide signs.

[0053] Depend on figure 2 As shown, the steps of an optimal embodiment of a fast positioning road guide sign of the present invention include:

[0054] S1. Acquiring road images;

[0055] S2. Divide the acquired road image into an upper part and a lower part of the image. Since the imaging of the road sign is in the upper part of the acquired road image, only the upper part of the image is detected, processed and positioned;

[0056] S3. Using the blue detection model b...

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Abstract

The invention discloses a method and system for rapidly positioning a road guide sign. The system comprises an acquiring unit, a cutting unit, a region acquiring unit and a positioning unit. The method comprises the following steps: acquiring a road image, cutting the acquired road image into an upper image and a lower image, acquiring an effective candidate region from the upper image by using a blue color detection module based on a RGB (red, green and blue) color model, carrying out horizontal long straight line detection to the acquired effective candidate region to position the road guide sign. Because the straight line feature detection replaces the traditional rectangular shape feature detection, the time spent in positioning the road guide sign can be shortened greatly, and the robustness can be improved greatly. The method and system for rapidly positioning the road guide sign can be widely applied to the field of the traffic sign recognition.

Description

technical field [0001] The invention relates to a method and system for locating traffic signs, in particular to a method and system for quickly locating road guide signs by detecting the straight line features of the upper or lower boundaries of the guide signs. Background technique [0002] Road guide signs are an important part of traffic signs. Road guide sign recognition is an important part of the assisted driving system, and road guide sign positioning is an essential part of road guide sign recognition. Therefore, road guide signs The development of road sign positioning is closely related to the development of high-performance and high-safety vehicles at home and abroad. The location of road guide signs is to install a vehicle-mounted camera in the vehicle, the camera shoots the road conditions, and detects and locates the guide signs on the road. Through the positioning of the road guide signs, the corresponding traffic sign information is given to the driver. Ach...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/32G06K9/46
Inventor 李熙莹罗玲王镇波陈玲
Owner SUN YAT SEN UNIV
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