CN106063257B - Method for managing traffic information and machine-readable medium - Google Patents
Method for managing traffic information and machine-readable medium Download PDFInfo
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- CN106063257B CN106063257B CN201480076400.9A CN201480076400A CN106063257B CN 106063257 B CN106063257 B CN 106063257B CN 201480076400 A CN201480076400 A CN 201480076400A CN 106063257 B CN106063257 B CN 106063257B
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- 238000000034 method Methods 0.000 title claims abstract description 38
- 238000012545 processing Methods 0.000 claims abstract description 19
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- 230000003044 adaptive effect Effects 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 8
- 238000010586 diagram Methods 0.000 description 8
- 238000004891 communication Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000006870 function Effects 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/09—Arrangements for giving variable traffic instructions
- G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
- G08G1/0967—Systems involving transmission of highway information, e.g. weather, speed limits
- G08G1/096766—Systems involving transmission of highway information, e.g. weather, speed limits where the system is characterised by the origin of the information transmission
- G08G1/096783—Systems involving transmission of highway information, e.g. weather, speed limits where the system is characterised by the origin of the information transmission where the origin of the information is a roadside individual element
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/09—Arrangements for giving variable traffic instructions
- G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
- G08G1/0967—Systems involving transmission of highway information, e.g. weather, speed limits
- G08G1/096708—Systems involving transmission of highway information, e.g. weather, speed limits where the received information might be used to generate an automatic action on the vehicle control
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/09—Arrangements for giving variable traffic instructions
- G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
- G08G1/0967—Systems involving transmission of highway information, e.g. weather, speed limits
- G08G1/096733—Systems involving transmission of highway information, e.g. weather, speed limits where a selection of the information might take place
- G08G1/096741—Systems involving transmission of highway information, e.g. weather, speed limits where a selection of the information might take place where the source of the transmitted information selects which information to transmit to each vehicle
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Abstract
The invention provides a traffic information management technology. In an exemplary embodiment, there is provided a method for managing traffic information, including: receiving one or more images of an intersection; processing the image to obtain traffic information of the intersection; and transmitting the traffic information to a participant associated with the intersection.
Description
Technical Field
The present invention relates generally to the field of traffic information management, and more particularly to systems and methods for managing traffic information and machine-readable media including executable instructions for performing the methods.
Background
Traffic information management technologies such as "Car-to-Car" (Car 2Car) technologies have been recently researched and developed in an attempt to make intersections safe and less congested. In the "vehicle-to-vehicle" technology, vehicles communicate with each other to manage and share traffic information, such as information on the layout of an intersection, based on sensor information acquired by a sensor (such as a radar or a laser scanner) and environmental information.
As a problem in the conventional art, a special sensor and a high-precision positioning system must be used to generate accurate sensor information. In fact, a car without sensors may not be able to participate in this conventional technique. However, the sensors used are often very expensive and have to be additionally installed.
Further, another problem is to keep up-to-date information about the layout of the intersection. Sometimes there are road closures, limited time building or even reconstruction of intersections. If the information about the layout of an intersection does not reflect the actual layout of the intersection, this may lead to inconsistencies, and the functions of conventional techniques relying on this information may even no longer work.
Disclosure of Invention
Aspects of the present invention are directed to systems and methods for managing traffic information, and machine-readable media comprising executable instructions for performing methods that may solve one or more of the above and other problems of the prior art.
According to an exemplary embodiment of the present invention, there is provided a method for managing traffic information, including: receiving one or more images of an intersection; processing the image to obtain traffic information of the intersection; and transmitting the traffic information to a participant associated with the intersection.
According to an example of this embodiment, the step of receiving one or more images of an intersection comprises: one or more images are received from cameras already installed around the intersection.
According to an example of the present embodiment, the step in which the image is processed to retrieve traffic information of an intersection includes: the received image is compared with a reference image of the intersection to derive a change in layout of the intersection.
According to an example of the present embodiment, the step in which the image is processed to retrieve traffic information of an intersection includes: the images are processed to derive the position or movement of the participant associated with the intersection.
According to an example of this embodiment, wherein receiving one or more images of an intersection comprises: images are received from a plurality of cameras at different locations around the intersection.
According to an example of the present embodiment, the step of transmitting the traffic information to the participants associated with the intersection comprises: traffic information is broadcast to all participants associated with the intersection.
According to another exemplary embodiment of the present invention, there is provided a method for managing traffic information, including: receiving traffic information at a participant associated with an intersection; associating traffic information with sensor information from the sensors; and sending the combined traffic and sensor information to the participants, wherein the traffic information is obtained by processing one or more images of the intersection.
According to an example of the present embodiment, wherein the traffic information includes a change in layout of the intersection.
According to an example of this embodiment, wherein the traffic information comprises a position or movement of a participant associated with the intersection.
According to another exemplary embodiment of the present invention, there is provided a system for managing traffic information, including: one or more camera units configured to capture one or more images of the intersection; a processing unit configured to process the image to retrieve traffic information of the intersection; and a communication unit configured to transmit the traffic information to a participant associated with the intersection.
According to an example of the present embodiment, wherein the camera unit includes a camera unit that has been installed around an intersection.
According to an example of the present embodiment, wherein the processing unit compares the received image with a reference image of an intersection to take a change in layout of the intersection.
According to an example of this embodiment, wherein the traffic information comprises the position or movement of the participant.
According to an example of the present embodiment, wherein the camera unit includes a plurality of camera units at different positions around the intersection.
According to an example of the present embodiment, wherein the communication unit broadcasts the traffic information to all participants associated with the intersection.
According to another exemplary embodiment of the present invention, a machine-readable medium including executable instructions which, when executed by a machine, cause the machine to perform the method for managing traffic information of the above embodiment is provided.
Further scope of applicability of the present invention will become apparent from the detailed description given hereinafter. However, it should be understood that the detailed description and specific examples, while indicating preferred embodiments of the invention, are given by way of illustration only, since various changes and modifications within the spirit and scope of the invention will become apparent to those skilled in the art from this detailed description.
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The above and other aspects and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments, which, when taken in conjunction with the accompanying drawings, illustrate by way of example the principles of the invention.
FIG. 1 illustrates a flow diagram of a method for managing traffic information in accordance with a first embodiment of the present technique;
FIG. 2 illustrates a flow diagram of a method for managing traffic information in accordance with a second embodiment of the present technique;
FIG. 3 illustrates a block diagram of a system for managing traffic information in accordance with a third embodiment of the present technique;
fig. 4 shows a schematic diagram of an intersection to which the present technology is applied.
Detailed Description
In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the described exemplary embodiments. It will be apparent, however, to one skilled in the art, that the described embodiments may be practiced without some or all of these specific details. In other exemplary embodiments, well-known structures or process steps have not been described in detail in order to avoid unnecessarily obscuring the concepts of the present invention.
Referring initially to fig. 1, fig. 1 illustrates a flow diagram of a method for managing traffic information in accordance with a first embodiment of the present technique. The method comprises a step 101 of receiving one or more images of an intersection, wherein the intersection may be, for example, an entire intersection or an intersection with connected roads; a step 102 of processing the image to obtain traffic information of the intersection, wherein the traffic information may include information about a change in layout of the intersection and information about a position, a number, or a movement of a participant associated with the intersection; and a step 103 of sending traffic information to participants associated with the intersection, wherein the participants may include vehicles or pedestrians in the intersection or attempting to enter or pass through the intersection.
By taking traffic information from images of the intersection, this embodiment can maintain up-to-date traffic information and can also reduce the cost for the sensors.
In an example, in the step 101 of receiving one or more images of an intersection, the images of the intersection may be received from cameras already installed around the intersection, which may further reduce the cost for the cameras. These cameras may have been installed around intersections for different reasons (e.g., surveillance cameras or security cameras). These cameras can be mounted directly above the intersection or on a high-rise building near the intersection so that they can acquire images of the intersection in real time or at any predetermined frequency as needed. The accuracy of the image and thus the traffic information can be improved, for example, by using a camera having a fixed position and having a high resolution.
In another example, in the step 101 of receiving one or more images of an intersection, the images of the intersection may be received from a plurality of cameras at different locations around the intersection, which may avoid the intersection from being hidden from view. Information based on images from different cameras can be combined, for example, on an image processing level to first generate one single image of an intersection using images from different cameras and then analyze the single image for traffic information, or on a model level where images from each camera are first analyzed and then the obtained information is combined between different cameras.
In an example, the step 102 of processing the image can include comparing the received image to a reference image of the intersection to derive a change in the layout of the intersection. The reference image may be obtained and stored in advance. The reference image may reflect the underlying or previous layout of the intersection. If there is a difference between the received image and the reference image, certain areas with differences may be marked as unreliable in the transmitted traffic information so that the participant receiving this information can degrade its functionality (i.e., the function that needs this information to work properly now knows that it does not have this information and makes an adaptation, e.g., only 50% of the function may be used instead of 100%). One example is: the speed of the car may have to be reduced or a warning given to the driver etc. In another aspect, a message can be sent to a traffic management center so that manual corrections to the layout can be made. Furthermore, the cause of the change can be detected by image processing and integrated into the transmitted information. This may include some information about the construction being performed, the accident, etc.
In another example, the step 102 of processing the image may include processing the image to retrieve the position or movement of the participant associated with the intersection, which may replace, at least in part, the functionality of the sensors on the participant and further reduce costs. Position or movement information may be retrieved through image processing for identifying the participant and analyzing its position or movement. Commonly known methods for such image processing may be employed. Positioning can be improved by providing special markers in the real world that can be used by the camera as reference points.
In an example, the step 103 of sending traffic information to the participants can include broadcasting the traffic information to all participants associated with the intersection so that the participants can get up-to-date traffic information even without any sensors. The traffic information may be broadcast by adding a new broadcast/communication intersection, e.g. using 802.11p/DSRC with participants, or by distributing the intersection over a cellular network, preferably a low latency network like LTE.
Referring now to fig. 2, fig. 2 illustrates a flow diagram of a method for managing traffic information in accordance with a second embodiment of the present technology. The method includes a step 201 of receiving traffic information at a participant associated with an intersection, wherein the traffic information may include information regarding a change in a layout of the intersection or a position or movement of the participant associated with the intersection; step 202 of integrating traffic information with sensor information from sensors, wherein the sensors may be sensors at the participant, or may be sensors at other participants; and a step 203 of sending the combined traffic and sensor information to the participants, wherein the traffic information is obtained by processing one or more images of the intersection.
When implemented on the participant side, this embodiment can maintain up-to-date traffic information and can also reduce the cost for sensors.
In one example, the joint traffic and sensor information may also be shared with other participants associated with the intersection.
It is to be understood that although information from the sensors is employed in the second embodiment, the present technique may even be used for participants who do not have any sensors. For example, a participant without a sensor may receive traffic information for its own use or shared with other participants.
Referring now to fig. 3, fig. 3 shows a block diagram of a system for managing traffic information, which may include: one or more camera units 301 configured to capture one or more images of an intersection; a processing unit 302 configured to process the image to retrieve traffic information of the intersection; and a communication unit 303 configured to transmit the traffic information to the participants associated with the intersection, for example, by broadcasting the traffic information to all participants associated with the intersection.
By taking traffic information from images of the intersection, this embodiment can maintain the latest traffic information and can also reduce the cost for the sensor.
In an example, the camera unit 301 may include a camera unit that has been installed around an intersection, and may be a plurality of camera units at different locations around the intersection.
In an example, the processing unit 302 can compare the received image to a reference image of an intersection to derive a change in layout of the intersection. And the processing unit 302 may process the images to retrieve traffic information about the participant's location or movement.
The present technology also provides a machine-readable medium including executable instructions that, when executed by a machine, cause the machine to perform the method for managing traffic information according to the first and second embodiments.
Referring now to fig. 4, fig. 4 shows a schematic diagram of an intersection to which the present technology is applied. The monitoring cameras that have been disposed around the intersection can acquire an image of the intersection in real time and transmit it to the server. The server processes the image to obtain traffic information for the intersection and sends the information to vehicles around the intersection. The traffic information may be directly transmitted to the vehicle by the server, or may be first transmitted to a center (for example, a traffic management center, not shown) and then transmitted to the vehicle after being combined with the information from the center.
When receiving traffic information from the server, the vehicle may use the traffic information directly or after associating it with all sensors available at the vehicle or other vehicles. Traffic information may be notified to drivers and shared between vehicles.
It is obvious to those skilled in the art from the above embodiments that the present invention can be implemented by software and necessary hardware, or by hardware, firmware, etc. Based on this understanding, embodiments of the present invention may be implemented, in part, in software. The computer software may be stored in a readable storage medium such as a floppy disk, hard disk, optical disk, or flash memory of the computer. The computer software comprises a series of instructions to cause a computer (e.g. a personal computer, a service station or a network terminal) to perform the method or parts of the method according to the respective embodiments of the invention.
It is clear that the invention thus described can be varied in different ways. Such variations are not to be regarded as a departure from the spirit and scope of the invention, and all such modifications as would be obvious to one skilled in the art are intended to be included within the scope of the following claims.
Claims (8)
1. A method for managing traffic information, comprising:
receiving one or more images of an intersection;
processing the image to obtain traffic information of the intersection;
associating traffic information with sensor information from the sensors; and
the combined traffic and sensor information is sent to the participants associated with the intersection,
the received image is compared to a reference image of the intersection to derive a change in the layout of the intersection, and if there is a difference between the received image and the reference image, the particular area with the difference may be marked as unreliable in the transmitted traffic information, enabling a participant receiving this information to make an adaptive adjustment to the vehicle.
2. The method of claim 1, wherein the step of receiving one or more images of an intersection comprises:
one or more images are received from cameras already installed around the intersection.
3. The method of claim 1, wherein the step of processing the image to obtain traffic information for the intersection comprises:
the images are processed to derive the position or movement of the participant associated with the intersection.
4. The method of claim 1, wherein receiving one or more images of an intersection comprises:
images are received from a plurality of cameras at different locations around the intersection.
5. The method of any of claims 1-4, wherein the step of sending traffic information to participants associated with the intersection comprises:
traffic information is broadcast to all participants associated with the intersection.
6. The method of claim 1, wherein the traffic information includes a change in layout of an intersection.
7. The method of claim 1, wherein the traffic information comprises a location or movement of a participant associated with the intersection.
8. A machine-readable medium comprising executable instructions that, when executed by a machine, cause the machine to perform the method for managing traffic information of any of claims 1 to 7.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2014/073164 WO2015135118A1 (en) | 2014-03-11 | 2014-03-11 | Trafic information management |
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| CN106063257A CN106063257A (en) | 2016-10-26 |
| CN106063257B true CN106063257B (en) | 2020-06-30 |
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| CN (1) | CN106063257B (en) |
| DE (1) | DE112014006452T5 (en) |
| WO (1) | WO2015135118A1 (en) |
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| JP6916609B2 (en) * | 2016-11-21 | 2021-08-11 | パナソニック インテレクチュアル プロパティ コーポレーション オブ アメリカＰａｎａｓｏｎｉｃ Ｉｎｔｅｌｌｅｃｔｕａｌ Ｐｒｏｐｅｒｔｙ Ｃｏｒｐｏｒａｔｉｏｎ ｏｆ Ａｍｅｒｉｃａ | Intersection information distribution device and intersection information distribution method |
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| CN101470962A (en) * | 2007-12-25 | 2009-07-01 | 上海市延安中学 | Traffic signal lamp switching system and method |
| CN101739833B (en) * | 2008-12-22 | 2012-07-25 | 昆明理工大学 | Pre-formation no-wait traffic flow control method |
| CN101777254B (en) * | 2010-01-12 | 2011-11-16 | 南京信息工程大学 | Crossing traffic information inquiring system and method based on multimedia messages |
| CN102497477B (en) * | 2011-12-13 | 2014-08-27 | 芜湖罗比汽车照明系统有限公司 | Cell phone system for vehicle monitoring |
| CN103323011B (en) * | 2012-03-22 | 2016-03-30 | 佛山市顺德区顺达电脑厂有限公司 | Point-to-point guider and the method thereof sharing sight spot information |
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2014
- 2014-03-11 DE DE112014006452.1T patent/DE112014006452T5/en active Pending
- 2014-03-11 CN CN201480076400.9A patent/CN106063257B/en active Active
- 2014-03-11 WO PCT/CN2014/073164 patent/WO2015135118A1/en active Application Filing
Patent Citations (6)
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| EP1408693A1 (en) * | 1998-04-07 | 2004-04-14 | Matsushita Electric Industrial Co., Ltd. | On-vehicle image display apparatus, image transmission system, image transmission apparatus, and image capture apparatus |
| JP2007068041A (en) * | 2005-09-01 | 2007-03-15 | Matsushita Electric Ind Co Ltd | Wide-area surveillance panorama system |
| CN101436346A (en) * | 2007-11-20 | 2009-05-20 | 孙少炜 | Traffic intelligent management system and method |
| CN101561969A (en) * | 2009-05-18 | 2009-10-21 | 南京大学 | Events video monitoring guiding and issuing method and system thereof |
| CN102122437A (en) * | 2011-04-01 | 2011-07-13 | 上海千年工程建设咨询有限公司 | Road traffic management decision support device |
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Also Published As
| Publication number | Publication date |
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| CN106063257A (en) | 2016-10-26 |
| DE112014006452T5 (en) | 2016-12-22 |
| WO2015135118A1 (en) | 2015-09-17 |
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