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Road warning mark detection and recognition method based on block recognition

A warning sign and recognition method technology, applied in character and pattern recognition, instruments, calculations, etc., can solve the problems of long running time, inability to meet the real-time performance of the vehicle, and low recognition accuracy, so as to improve accuracy, increase saturation, The effect of improving the detection effect

Active Publication Date: 2016-07-27
北京图迅丰达信息技术有限公司
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AI Technical Summary

Problems solved by technology

In the process of classification, the features used are mostly color or shape invariant moments, etc. Generally speaking, the current traffic sign recognition method has shortcomings such as low recognition accuracy, long running time, and inability to meet the real-time requirements of the vehicle.

Method used

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  • Road warning mark detection and recognition method based on block recognition
  • Road warning mark detection and recognition method based on block recognition
  • Road warning mark detection and recognition method based on block recognition

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Embodiment Construction

[0048] In order to facilitate those of ordinary skill in the art to understand and implement the present invention, the present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the implementation examples described here are only used to illustrate and explain the present invention, and are not intended to limit this invention.

[0049] please see figure 1 A method for detecting and recognizing road warning signs based on block recognition provided by the present invention comprises the following steps:

[0050] Step 1: Obtain the vehicle video, disassemble it into images arranged in chronological order, and retrieve the GPS and IMU data of the vehicle at the corresponding exposure time;

[0051] Step 2: Sampling and preprocessing the vehicle video. The specific method of preprocessing is as follows:

[0052] First of all, under the platform of VisualStudio2010, using GDAL, OpenCV ...

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Abstract

The invention discloses a road warning mark detection and recognition method based on block recognition. The method comprises the following steps of performing HSV (Hue, Saturation and Value) color spatial alternation on vehicle-mounted video data and performing binarization processing; extracting profile information of a binarization image, and judging the shape of the binarization image according to the geometrical characteristics of the binarization image so as to detect a warning mark region; extracting block features and HOG (Histogram of Oriented Gradient) features of the warning mark region; matching out the type of a mark to be recognized by using a mark base as the standard; and obtaining the mark detection result. The method has the advantages that the high mark recognition correct rate can be ensured; and the missing detection is effectively reduced, so that the better mark detection result is obtained. A good application value is realized in the field of intelligent traffic.

Description

technical field [0001] The invention relates to a traffic sign recognition method, in particular to a road warning sign detection and recognition method based on block recognition. Background technique [0002] The traffic sign on the road is a public sign with distinctive color and shape characteristics, which is used to manage traffic, indicate the direction of driving, and ensure the smooth flow of the road and the safety of driving. Traffic signs are an important carrier of traffic information, which can provide accurate traffic guidance for vehicles and pedestrians. Therefore, timely and accurate identification of traffic sign information is crucial to traffic safety. my country's road traffic signs can be divided into three categories: prohibition signs, warning signs and instruction signs. Among them, there are 40 kinds of prohibition signs, with red frames on a white background, mostly circular; 45 warning signs, with black frames on a yellow background, mostly trian...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00G06K9/32G06K9/54
CPCG06V20/582G06V20/62G06V10/20
Inventor 贾永红胡志雄周明婷
Owner 北京图迅丰达信息技术有限公司
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