CN102789693A - Method for automatically identifying road symbols and vehicle-bone identification device - Google Patents
Method for automatically identifying road symbols and vehicle-bone identification device Download PDFInfo
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- CN102789693A CN102789693A CN2012102837327A CN201210283732A CN102789693A CN 102789693 A CN102789693 A CN 102789693A CN 2012102837327 A CN2012102837327 A CN 2012102837327A CN 201210283732 A CN201210283732 A CN 201210283732A CN 102789693 A CN102789693 A CN 102789693A
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Abstract
The invention provides a method for automatically identifying road symbols and a vehicle-bone identification device, wherein the method provides a method for identifying road symbols, and the device realizes a voice broadcast function of the road symbols. A driver is prompted to pay attention through automatically identifying the road symbols and adopting a voice mode, so the error probability for the driver to identify the road symbols can be greatly reduced.
Description
Technical field
The present invention relates to the road sign automatic identification field, particularly when driving, a kind of car-mounted device is discerned road sign and a kind of road sign automatic identifying method and the vehicle-mounted recognition device of voice broadcast so that the driver is pointed out automatically.
Background technology
Road signs are the graphical symbols that show traffic law and road information; It can make traffic law obtain image, concrete, simple and clear expression; Also expressed the content that is difficult to text description simultaneously, in order to regulate the traffic, to indicate direction of traffic to guarantee the facility of The coast is clear and traffic safety.Be applicable to highway, urban road and all accommodation roads, have the character of decree, vehicle, pedestrian must observe.Main effect is 1, road information is provided, and plays the effect of road language; 2, commander's control traffic ensures traffic safety; 3, the guiding that shows the way improves driving efficient; 4, for vehicle supervision department the law enforcement foundation is provided.At present, road and traffic sign plates mainly contains main mark and auxiliary sign two big classes, and main mark comprises following several types:
(1) warning notice: the warning vehicle, the pedestrian notes the sign of location at risk, road the place ahead.
(2) prohibitory sign: forbid or the sign of limiting vehicle, certain traffic behavior of pedestrian.
(3) Warning Mark: the sign that indication vehicle, pedestrian advance.
(4) fingerpost: the sign that transmits road direction, place, range information.
(5) tourist district's sign: the sign that tourist attractions direction, distance are provided.
(6) road construction safety notice: the current sign in announcement road construction district.
Auxiliary sign is attached under the main mark, plays the sign of aid illustration effect.
At present; Annual because the property loss of vehicle collision institute ten million in the whole world is in hundred billion yuan, and the personnel death is the million people approximately, and the traffic hazard of 70-90% be human factor necessarily; Wherein 56% is that driver's identification error causes, wherein just comprises the identification to road sign.Therefore, need to strengthen identification to road sign.
Summary of the invention
The object of the invention just provides a kind of road sign method and the vehicle-mounted recognition device of identification automatically.
At first the present invention provides a kind of road sign method of identification automatically, may further comprise the steps:
A, obtain the image information of road sign;
B, the image information of road sign is delivered image processing engine, image processing engine will be through algorithm identified graph image characteristic, returns in the road sign of identification image and represents meaning and return the text description that identifies;
C, the text description content of road sign is carried out voice reminder.
Further, in the method that a kind of road sign on is discerned automatically: also comprise among the described step C, the text description content of road sign and the positional information in current place are preserved.
Further, in the method that a kind of road sign on is discerned automatically: described positional information is a GPS information.
Further, in the method that a kind of road sign on is discerned automatically: before described steps A, further comprising the steps of:
A01, obtain local gps signal, and will scan the text description content of the road sign of preserving and the positional information in current place, if preserve this ground road sign the text description content turn to step C, otherwise turn to steps A.
The present invention also provides a kind of road sign according to the aforesaid right requirement vehicle-mounted recognition device of the method for identification automatically; Comprise microprocessor, obtain the image acquiring device of the image information of road sign; Image information is handled the image processing engine of the word content that forms road sign, the text description content of road sign is carried out the sound broadcasting device of voice reminder; Described image acquiring device, image processing engine, sound broadcasting device are connected with described microprocessor respectively.
Further, in the above-mentioned vehicle-mounted recognition device: also comprise vehicle GPS, memory storage; Described vehicle GPS, memory storage link to each other with described microprocessor respectively.
The present invention is through automatic identification road sign and adopt speech form to remind the driver to note, can significantly reduce the wrong chance that the driver discerns road sign.
Below through combining specific embodiment and accompanying drawing that the present invention is further explained.
Description of drawings
Accompanying drawing 1 is a process flow diagram of the present invention.
Accompanying drawing 2 is vehicle-mounted recognition device block diagrams of the present invention.
Accompanying drawing 3 is embodiment of the invention applicating flow charts.
Embodiment
Present embodiment is a kind of road sign vehicle-mounted recognition device of the method for identification automatically that has; As shown in Figure 2; This device comprises the image acquiring device of the image information of obtaining road sign; Image information is handled the image processing engine of the word content that forms road sign, the text description content of road sign is carried out the sound broadcasting device of voice reminder, vehicle GPS, memory storage and microprocessor; Image acquiring device, image processing engine, sound broadcasting device connect successively.Image acquiring device, image processing engine, sound broadcasting device, vehicle GPS, memory storage link to each other.
In the present embodiment; The image acquiring device that obtains the image information of road sign can be mounted in the video camera of vehicle outer side; The general at present ccd video camera that adopts; The image processing engine that image information is handled the word content that forms road sign is a lot of in the market, in the present embodiment, image processing engine, sound broadcasting device, vehicle GPS, memory storage can be adopted the inner resource of automatic navigator.
At present, according to the regulation of road signs national standard, road and traffic sign plates is divided into 4 types of kinds more than 200:
The first kind is warning road and traffic sign plates: be shaped as equilateral triangle, color is the yellow end, black surround, black pattern, and this road and traffic sign plates stands on the dangerous 20-50m of place at a distance.
Second type is alert order property road and traffic sign plates: be shaped as circle, color is the red limit of white background, red bar, black pattern; This road and traffic sign plates is arranged on to be forbidden or limits current crossing or place.
The 3rd type is indicative road and traffic sign plates: be shaped as circle, color is the white pattern in the blue end, and advancing of vehicle or pedestrian provided instructional information.
The 4th type is meant way road traffic mark board: in order to indication road direction, place, distance etc., be generally rectangle or square, being used for Ordinary Rd is the white pattern in the blue end, and what be used for highway is the white pattern in the green end.
In addition, also have complementary road and traffic sign plates to be placed under the traffic mark board of main stem road, on have literal or pattern to remark additionally.
In the present embodiment; In the storer of navigating instrument; Preserved these patterns and with its corresponding character meaning and audio description; Behind the road and traffic sign plates that image acquiring device obtains, just can discern these traffic mark boards through the traffic mark board storehouse that the special-purpose image processing engine of traffic combines to be kept in the navigating instrument internal memory, the audio description signal with the traffic mark board that recognizes broadcasts from sound broadcasting device then.
In navigating instrument, this device course of work is following: as shown in Figure 1.
A01, obtain local gps signal, and will scan the text description content of the road sign of preserving and the positional information in current place, if preserve this ground road sign the text description content turn to step C, otherwise turn to steps A;
A, obtain the image information of road sign;
B, the image information of road sign is delivered image processing engine, image processing engine will be through algorithm identified graph image characteristic, returns in the road sign of identification image and represents meaning and return the text description that identifies;
C, the text description content of road sign is carried out voice reminder.
In the present embodiment, whether the driver is about to get into special road section according to the motorway guide planks voice reminder, effectively reduces the careless traffic hazard that causes; And through discerning the service content (for example: whether refuelling station, dining room etc. are arranged) that motorway guide planks prompting highway section, the place ahead can provide; Reduce the driver and when driving, divert one's attention to seek these functions; This function also can memorize the GPS position of navigator record and the road conditions sight binding of service content, in order to using next time.
The present invention realizes through following technical scheme
1, the digital picture capturing device through customization obtains graph image, handles through GPU or DSP, accomplishes denoising, feature extraction and operation such as compressed and decompressed.
2, will deliver the image processing engine through the pretreated graph image of hardware unit, processing engine will be through algorithm identified graph image characteristic, returns in the motorway guide planks of identification image and represents meaning and return the text description that identifies.
3, system carries out two types of processing to return results, carries out voice reminder according to pre-set threshold; Deposit the information that has set characteristic in the current identification content and the GPS information in current place in database as historical record according to setting.
4, according to the historical record of preserving management function is provided, for example: functions such as return visit and intelligent reminding are provided.At this moment; If the user is provided with sensitive information (for example be provided with and treat can the noon to remind my that place to have meal) and has opened intelligent reminding, so microprocessor under system software controls, time point left and right sides time at noon; Go for the pictograph information and its corresponding gps positional information of typing in the historical data base; When automobile has arrived near this position, software will remind user's next one highway section that the place of having a meal will be arranged, and please be careful like this.
Can find out from Fig. 2 and Fig. 3; Vehicle-mounted special-purpose camera is taken the road image on the way; Image is through GPU or dsp chip pre-service, because shooting environmental more complicated in the driving process, technological means such as necessary image enhancing and recovery, image segmentation and picture coding compression are requisite; Pretreated graph image is delivered the identification processing engine, and the recognition engine high speed processing is handled the graph image that contains the sensitive features pel, and non-sensitive graph image then abandons; Recognition system will be carried out intelligent sound according to the recognition result that threshold value is returned engine and reminded the while identifying information to preserve into historical data base, and algorithm flowchart of system is seen graph image recognition system arthmetic statement process flow diagram.
For historical data base; Native system provides the user can browse and the edit history keeping records; And allow user's setting whether to open the intelligent reminding function; This function possibly need service to give the user then to remind (for example to 12:00 at noon, about can remind the current highway section of user that food and beverage sevice can be provided according to historical record) the special scenes user that judges.
Claims (6)
1. the method that road sign is discerned automatically is characterized in that, may further comprise the steps:
A, obtain the image information of road sign;
B, the image information of road sign is delivered image processing engine, image processing engine will be through algorithm identified graph image characteristic, returns in the road sign of identification image and represents meaning and return the text description that identifies;
C, the text description content of road sign is carried out voice reminder.
2. the method for discerning automatically according to the described a kind of road sign of claim 1 is characterized in that: also comprise among the described step C, the text description content of road sign and the positional information in current place are preserved.
3. the method for discerning automatically according to the described a kind of road sign of claim 2, it is characterized in that: described positional information is a GPS information.
4. the method for discerning automatically according to the described a kind of road sign of claim 3 is characterized in that: before described steps A, further comprising the steps of:
A01, obtain local gps signal, and will scan the text description content of the road sign of preserving and the positional information in current place, if preserve this ground road sign the text description content turn to step C, otherwise turn to steps A.
5. plant the road sign according to claim 1 vehicle-mounted recognition device of the method for identification automatically; Comprise microprocessor; It is characterized in that: the image acquiring device that comprises the image information of obtaining road sign; Image information is handled the image processing engine of the word content that forms road sign, the text description content of road sign is carried out the sound broadcasting device of voice reminder; Described image acquiring device, image processing engine, sound broadcasting device are connected with described microprocessor respectively.
6. according to the described vehicle-mounted recognition device of claim 5, it is characterized in that: also comprise vehicle GPS and memory storage; Described vehicle GPS links to each other with described microprocessor respectively with memory storage.
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| CN103065489A (en) * | 2012-12-28 | 2013-04-24 | 天津爱迪尔软件开发有限公司 | Immediate navigation road condition system and navigation method |
| CN103489323A (en) * | 2013-09-16 | 2014-01-01 | 安徽工程大学 | Traffic light recognizing device |
| CN103712626A (en) * | 2014-01-09 | 2014-04-09 | 上海安吉星信息服务有限公司 | Guideboard broadcasting method for navigation system |
| CN104732245A (en) * | 2015-04-14 | 2015-06-24 | 万里运业股份有限公司 | Identification and pre-warning method of hazardous article conveying vehicle appearing in front of coach bus |
| CN105956641A (en) * | 2016-05-14 | 2016-09-21 | 李华敏 | Method for recognizing traffic sign board remotely and intelligently |
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