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Traffic information reading method based on coding traffic sign

A technology for traffic information and traffic signs, applied in the field of traffic information reading based on coded traffic signs, can solve the problems of high technical requirements for identification equipment, inability to recognize traffic signs, slow recognition speed, etc., to improve the recognition speed and Accuracy, improve production efficiency, reduce the effect of the number of settings

Active Publication Date: 2014-12-03
NANJING GENERAL ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing automatic driving, driver-assisted driving and active safety warning systems do not have relatively mature technologies. The technologies used now still use image recognition technology to process the images of existing traffic signs. There are great limitations: 1. The recognition rate is very low; 2. The recognition speed is very slow; 3. The technical requirements for the recognition equipment are very high; 4. Traffic signs with text descriptions cannot be recognized

Method used

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  • Traffic information reading method based on coding traffic sign
  • Traffic information reading method based on coding traffic sign
  • Traffic information reading method based on coding traffic sign

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The method for reading traffic information based on coded traffic signs comprises the following steps:

[0036] like figure 1 As shown, a calibration area 1 and a traffic information area 2 are set on the traffic sign, the traffic information area is divided into four large information areas 21, the information area is divided into eight information sub-areas 211, and each information sub-area is assigned a value ; Calibration area draws calibration pattern 11; Form a standard traffic sign picture;

[0037] The corresponding value of the information sub-area in the same information area or the sum of the corresponding values ​​of any information sub-area corresponds to a kind of traffic information to form a standard list;

[0038] Make a traffic sign, blacken the information sub-area corresponding to the traffic sign and set it on the roadside;

[0039] Take a photo of the traffic sign in step 3 through the vehicle's front camera to obtain a physical picture;

[004...

Embodiment 2

[0059] For example, if a sign board is set up somewhere to close the right road 3000 meters ahead, the first-level information code of this coded traffic sign should be 1 (for all motor vehicles) after searching the above description; the second-level information code belongs to road construction Safety sign, so the second-level code should be 6; the third-level information code belongs to the front right road closed sign of the road construction safety sign, so the third-level code should be 4; the fourth-level code can be done as follows: 100 meters (1); 200 m (2); 300 m (3); 400 m (4); 500 m (5); 600 m (6); 700 m (7); 800 m (8); ...; The obtained four-level code should be 30;

[0060] The coding of this traffic sign is just 1, 6, 4, 30; Figure 5 shown.

[0061] Similarly, traffic sign boards can also be in other shapes, such as a circle. Correspondingly, the calibration area can be set in the center of the circle, while the large information area is multiple rings distri...

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Abstract

The invention relates to a traffic information reading method based on a coding traffic sign. The traffic information reading method comprises the following specific steps: arranging a calibration area and a traffic information area on a traffic sign board, dividing the traffic information area into a plurality of information regions, dividing the information regions into a plurality of information subareas, and assigning each information subarea; drawing a calibrating pattern in the calibration area; forming a standard traffic sign board picture; enabling the corresponding values of the information subareas in the same information region or the sum of the corresponding values of any one information subareas to correspond to one type of traffic information to form a standard list; manufacturing the traffic sign board; shooting the traffic sign board to obtain a real picture; and comparing the real picture with the standard traffic sign board picture to obtain traffic information by combining with the standard list. Traffic sign identification speed and accuracy can be improved, a traffic information integration level is high so as to reduce traffic sign board arrangement amounts, the traffic sign boards are unified, the production and manufacture efficiency of the traffic sign boards are improved so as to lower production cost, and the invention is suitable to widely popularize.

Description

technical field [0001] The invention relates to a traffic information reading method based on coded traffic signs. Background technique [0002] With the development of society, automobiles have become an indispensable means of transportation for people to travel; however, with the increase in the number of automobiles, the safe driving of automobiles has become an issue of great concern to the society, and the automatic driving technology of automobiles has gradually emerged. [0003] The existing automatic driving, driver-assisted driving and active safety warning systems do not have relatively mature technologies. The technologies used now still use image recognition technology to process the images of existing traffic signs. There are great limitations: 1. The recognition rate is very low; 2. The recognition speed is very slow; 3. The technical requirements for the recognition equipment are very high; 4. Traffic signs with text descriptions cannot be recognized. Conten...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/62G06T7/00
Inventor 陈杰刘玉忠
Owner NANJING GENERAL ELECTRONICS
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