CN102682607A - Active vehicle identification system and active vehicle identification method - Google Patents
Active vehicle identification system and active vehicle identification method Download PDFInfo
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- CN102682607A CN102682607A CN2012101005450A CN201210100545A CN102682607A CN 102682607 A CN102682607 A CN 102682607A CN 2012101005450 A CN2012101005450 A CN 2012101005450A CN 201210100545 A CN201210100545 A CN 201210100545A CN 102682607 A CN102682607 A CN 102682607A
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Abstract
The invention discloses an active vehicle identification system and an active vehicle identification method. The active vehicle identification system is used for identifying a vehicle running on a road, and comprises a video camera, an image identification system and luminous marks, wherein the luminous marks are arranged on the vehicle running on the road; the video camera is arranged above the road, and faces the road and the vehicle; and the image identification system is used for analyzing an image recorded by the video camera, and identifying the luminous marks in the image. The active vehicle identification system and the active vehicle identification method have the advantage of higher identification accuracy.
Description
Technical field
The present invention relates to be applied to the recognition system and the recognition methods of field of traffic, particularly a kind of vehicle is recognition system and initiatively recognition methods of vehicle initiatively.
Background technology
At present, along with the develop rapidly of technology of Internet of things, intelligent transportation system (ITS) has obtained obvious improvement, and is applied to gradually in the urban transportation management and control.In present stage, intelligent transportation system (ITS) is mainly used in problems such as solving the road network operational efficiency is low, the automobile energy consumption high, the exhaust emissions amount is big, traffic safety accident occurrence frequency height.For example, adaptive control system SCOOT 170 city operations at present of Britain's Transport and Road Research Laboratory development in the whole world.SCOOT comes to detect in real time traffic data through the wagon detector that is installed in this crossing, upper reaches, crossing; Utilize traffic model to optimize the signal timing dial parameter; And rely on hardware devices such as communication network, signal controlling machine to implement control, have higher accuracy.According to statistics, the SCOOT system can make the average vehicle delay time reduce by 12%.And the key that realizes this system is vehicle detection, location and identification.At present, industry has been developed multiple vehicle location recognition system, mainly comprises magnetic cognition technology, ripple frequency cognition technology and video-aware technology frequently.Wherein, the traffic parameter that the video-aware technology can be gathered is maximum, and the image of collection cost reusable and system with installation and operation is lower, becomes the core technology that industry puts forth effort to develop.
For example, on Dec 8th, 2010, the disclosed patent No. was that 200920351708.6 Chinese patent has promptly disclosed the automatic identifier of a kind of license plate comprehensively.The automatic identifier of this license plate comprises video camera, car plate identifier, sensor and light filling unit; Its identifier external tapping is connected with analog video camera, sensor and light filling unit respectively; Main employing is a main control chip towards the DSP of multimedia application specially in the car plate identifier, and the interface of this CPU disposal system is connected with power supply power supply modular converter, RS232 level switch module, network data transmission module, data and program storage and image capture module; License plate image that the system that its each several part constituted can collect through analog video camera and identification result data are passed to host computer through the video data signal of CPU disposal system output by Ethernet interface and are carried out data transmission.
Yet this system need carry out image recognition through utilizing computing machine after car plate is taken pictures.In link to the car plate licence plate because the environment at sunshine of day and night differs greatly on the road, very difficult assurance clap image between consistance, this has just brought big difficult to computer Recognition.In the image recognition link, because car plate itself only is a part very little on the body of a motor car, road, vehicle integral body are taken pictures can obtain more much bigger than car plate digital picture itself data volume far away.As far as computer system, googol needs huge storage space according to amount, is difficult for simultaneously realizing fast processing, and this has just limited the efficient and the practical range of this system.On the other hand, the information on the car plate can be regarded as X-Y scheme, and computing machine is higher to the difficulty of X-Y scheme identification at present, needs the software of complex design and the debugging of specialty.This has just increased the cost of this system's operation.
Summary of the invention
In view of this, be necessary to provide the higher vehicle of a kind of recognition accuracy initiatively recognition system and initiatively recognition methods of vehicle.
A kind of vehicle is recognition system initiatively, is used for the vehicle of travels down is discerned, and comprises video camera, image identification system; Also comprise luminescent marking; This luminescent marking is arranged on the vehicle of this travels down, and this camera is installed in the top of this road, and this video camera is towards this road and vehicle set; This image identification system is used to analyze the image of this camera record, and identifies the luminescent marking in the said image.
The initiatively recognition methods of a kind of vehicle is characterized in that, this vehicle initiatively recognition methods adopts initiatively recognition system identification vehicle of a kind of vehicle; This vehicle initiatively recognition system is used for the vehicle of travels down is discerned, and comprises video camera, image identification system, also comprises luminescent marking; This luminescent marking is arranged on the vehicle of this travels down; This camera is installed in the top of this road, and this video camera is towards this road and vehicle set, and this image identification system is used to analyze the image of this camera record; And identifying the luminescent marking in the said image, this vehicle initiatively recognition methods comprises the steps: on vehicle, to be provided with luminescent marking; Utilize the image that goes of vehicle on this camera record road; Utilize this image identification system to detect the image of this camera record, identify the luminescent marking in the said image.
Compared with prior art; Vehicle active recognition system of the present invention and vehicle active recognition methods are through being provided with this luminescent marking on the surface of this vehicle; Utilize this image identification system to analyze the image of this camera record; And identify the luminescent marking in the said image, because light and road surrounding environment that this luminescent marking sends differ greatly, this just makes this image identification system effectively this luminescent marking to be identified; Greatly improve the accuracy rate of this image identification system identification, thereby had the accuracy rate advantage of higher.
Description of drawings
Fig. 1 is the stereographic map that is provided with the vehicle of luminescent marking among vehicle active recognition system first embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the present invention is further described:
See also Fig. 1, shown in Figure 1 is the vehicle stereographic map of vehicle 10 in the recognition system initiatively of first embodiment of the invention, and this vehicle 10 comprises top 12, afterbody 14.This afterbody 14 comprises the rear wall 142 of the rear end that is positioned at vehicle 10.Middle part on this rear wall 142 is provided with a vehicle license 11.This vehicle license 11 is provided with the number (figure does not show) of sign testing vehicle register.This vehicle initiatively recognition system is used for the vehicle that goes on the road (figure does not show) is discerned.
Please with reference to Fig. 1, the vehicle of first embodiment of the invention active recognition system comprises the vehicle 10 of three luminescent markings 20, video camera (figure does not show), image identification system (figure does not show), road (figure does not show) and travels down.This video camera hangs on the top of road one side and is provided with towards this road and vehicle 10, is used to write down the current video of vehicle 10 on its contiguous road.This image identification system comprises host computer, image recognition program and connecting line.This connecting line connects video camera and this host computer on this road, sends the video of this camera record to this host computer and analyzes.This host computer and this image recognition program are used for the video of this video camera record is carried out real-time analysis; At first convert this vision signal into digital signal; Utilize image recognition program that the image of this camera record is analyzed again; And identify the luminescent marking 20 that occurs in these images, judge have vehicle 10 to cross on this road with this.At last, this image identification system can be exported to intelligent transportation system (ITS) with recognition result, supplies ITS to judge information such as traffic.
Please with reference to Fig. 1, the structure of these three luminescent markings 20 is identical, is the LED lamp or the Halogen lamp LED that can send IR.These luminescent markings 20 are electrically connected with battery in this vehicle 10, to obtain electric power.These three luminescent marking 20 spaces are arranged on the top 12 of this vehicle 10, and arrange along the direction of the vehicle body that is parallel to this vehicle 10.Certainly, this luminescent marking 20 can also be arranged on other positions on these vehicle 10 surfaces.This image identification system can identify the light that this luminescent marking 20 sends.This luminescent marking 20 is arranged according to predetermined dimension, is provided with the program of this predetermined dimension of identification in this image identification system, makes this luminescent marking 20 can produce the effect of similar bar code, identifies the identity information of vehicle.
This video camera also comprises optical filtering, before this optical filtering is arranged on the camera lens of this video camera, and the light setting of this optical filtering to should luminescent marking sending.This optical filtering is used for light filtering that non-this luminescent marking 20 is sent, so that reduce the data volume of this camera acquisition.Because the light that sends of this luminescent marking 20 is infrared light, so this optical filtering can the most of visible light of filtering, thereby the solar irradiation condition effect is dropped to minimum, assurance can both be discerned day and night smoothly.
Adopt the vehicle active recognition methods of the vehicle active recognition system of first embodiment of the invention to comprise the steps: at first, the luminescent marking 20 of arranging according to predetermined dimension is set on vehicle 10; Utilize the image that goes of vehicle 10 on this camera record road; Utilize this image identification system to analyze the image of this camera record, identify the luminescent marking 20 in the said image.When the interval of the pattern in the luminescent marking 20 during, be judged to be the luminescent marking 20 on the different vehicle 10 greater than 0.5 meter.
In sum, this vehicle active recognition system and vehicle active recognition methods utilize this image identification system to analyze the image of this camera record, and identify the luminescent marking 20 in the said image through this luminescent marking 20 is set on the surface of this vehicle 10.Compared with prior art, because light and road surrounding environment that this luminescent marking 20 sends differ greatly, this just makes this image identification system effectively this luminescent marking 20 to be identified, and has greatly improved the accuracy rate of this image identification system identification.And because this luminescent marking is an active illuminating, no matter day and night, this image identification system all can effectively be discerned.Through being used optical filter; Can a large amount of unnecessary information filterings be fallen; Effectively reduced the data volume that this image identification system will be handled, improved processing speed and reduced hardware and software cost, the traffic system of handling entire city for ITS provides possibility.In addition,, can play the effect of similar bar code, make this image identification system can identify the identity information of this vehicle 10 rapidly through this luminescent marking 20 is arranged along being parallel to vehicle body according to predetermined specification.These luminescent markings 20 are arranged along the direction that is parallel to vehicle body can reduce the change of vehicle 10 apart from the global shape of the far and near different and generation of video camera as far as possible.And, compare the digital mode on the Direct Recognition car plate 11 in the prior art, the employing of this luminescent marking 20 will be simplified the complexity of recognizer in this image identification system greatly, improve the accuracy of identification.When having a plurality of vehicles 10 to pass through on this road, because the spacing between the vehicle 10 will be much larger than the spacing of each pattern in this luminescent marking, so this image identification system can easily identify the information of a plurality of vehicles 10.
Understandable, this luminescent marking 20 can also send the bigger light of contrast of other and surrounding environment except that sending infrared light, be convenient to the identification of image identification system, for example, and to stronger gold-tinted of misty rain penetration power etc.When this luminescent marking 20 when sending infrared light, this video camera can also be equipment such as ir supervisor.This image identification system can also be connected through wired or wireless mode with a plurality of cameras, so that realize the monitoring of a plurality of crossings, system-wide section.
Obviously, those skilled in the art can carry out various changes and modification to the embodiment among the present invention and not break away from the spirit and scope of the present invention.Like this, if these in the embodiment of the invention are revised within the scope that belongs to claim of the present invention with modification and be equal to, then the embodiment among the present invention also is intended to comprise these changes and modification interior.
Claims (8)
1. a vehicle active recognition system is used for the vehicle of travels down is discerned, and comprises video camera, image identification system; It is characterized in that, also comprise luminescent marking, this luminescent marking is arranged on the vehicle of this travels down; This camera is installed in the top of this road; This video camera is towards this road and vehicle set, and this image identification system is used to analyze the image of this camera record, and identifies the luminescent marking in the said image.
2. vehicle according to claim 1 is recognition system initiatively, it is characterized in that said luminescent marking can send infrared light.
3. vehicle according to claim 2 is recognition system initiatively, it is characterized in that said luminescent marking is LED lamp or Halogen lamp LED, and said luminescent marking is electrically connected with the battery of this vehicle.
4. vehicle according to claim 1 is recognition system initiatively, it is characterized in that comprise a plurality of luminescent markings, said luminescent marking space is arranged on the surface of this vehicle.
5. according to the vehicle active recognition system of claim said 4, it is characterized in that said luminescent marking is arranged on the top of this vehicle, and said luminescent marking is arranged along the direction that is parallel to this vehicle body.
6. according to the vehicle active recognition system of claim said 5, it is characterized in that said luminescent marking is provided with according to predetermined specification space, this image identification system is provided with the program of this predetermined dimension of identification.
7. according to each described vehicle active recognition system in the claim 1 to 6, it is characterized in that this video camera also comprises optical filtering, before this optical filtering is arranged on the camera lens of this video camera, the light setting that the corresponding said luminescent marking of this optical filtering sends.
8. an initiatively recognition methods of vehicle is characterized in that, this vehicle identification method adopts each described vehicle active recognition system identification vehicle in the claim 1 to 7, comprises the steps:
Luminescent marking is set on vehicle;
Utilize the image that goes of vehicle on this camera record road;
Utilize this image identification system to detect the image of this camera record, identify the luminescent marking in the said image.
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| CN201210100545.0A CN102682607B (en) | 2012-04-08 | 2012-04-08 | Active vehicle recognition system and vehicle active identification method |
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| CN201210100545.0A CN102682607B (en) | 2012-04-08 | 2012-04-08 | Active vehicle recognition system and vehicle active identification method |
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| CN102682607B CN102682607B (en) | 2016-12-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017215301A1 (en) * | 2016-06-17 | 2017-12-21 | Boe Technology Group Co., Ltd. | Acquisition device, recognition device, vehicle identification system and method |
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| CN102682607B (en) | 2016-12-07 |
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Effective date of registration: 20190124 Address after: 201799 floor 5, C building, 333 National Convention and Exhibition Center, song Ze Avenue, Qingpu District, Shanghai. Patentee after: Weimar Automobile Technology Group Co.,Ltd. Address before: 510640 2414-2416 of the main building 371, five mountain road, Tianhe District, Guangzhou, Guangdong. Patentee before: GUANGDONG GAOHANG INTELLECTUAL PROPERTY OPERATION Co.,Ltd. Effective date of registration: 20190124 Address after: 510640 2414-2416 of the main building 371, five mountain road, Tianhe District, Guangzhou, Guangdong. Patentee after: GUANGDONG GAOHANG INTELLECTUAL PROPERTY OPERATION Co.,Ltd. Address before: 361010 No. 1511, Second Road, Huahubei, Huli District, Xiamen City, Fujian Province Patentee before: Li Fuwen |
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