CN105070058A - Accurate traffic analysis method and system based on real-time traffic video - Google Patents
Accurate traffic analysis method and system based on real-time traffic video Download PDFInfo
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- CN105070058A CN105070058A CN201510488609.2A CN201510488609A CN105070058A CN 105070058 A CN105070058 A CN 105070058A CN 201510488609 A CN201510488609 A CN 201510488609A CN 105070058 A CN105070058 A CN 105070058A
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Abstract
The invention provides an accurate traffic analysis method and system based on a real-time traffic video. The method comprises the following steps: 1) carrying out real-time traffic monitoring on each street and road in a city to obtain real-time video data of the streets and roads; 2) processing the traffic video data, and converting the traffic video data into traffic pictures; 3) analyzing the traffic pictures, and carrying out identification and analysis on the traffic pictures through the conventional image identification and analysis technology to generate formatted data suitable for being stored in a database; 4) matching streets and roads whose real-time traffic videos are obtained with all streets and roads to find out streets and roads whose traffic videos are not obtained yet; 5) obtaining traffic information of the streets and roads whose traffic videos are not obtained yet through a Gaode map; and 6) forming the final complete traffic information according to the real-time traffic video analysis data and Gaode map data. A user can check the traffic information of the whole city accurately through a mobile phone or an intelligent terminal according to the accurate traffic analysis method and system, so that the user can avoid jammed road sections, and plan a driving line; and time cost and fuel cost are saved.
Description
Technical field
The present invention relates to the network communications technology, cell-phone customer terminal development technique, video processing technique, picture recognition technology, particularly relate to a kind of accurate road condition analyzing method and system based on real-time road video.
Background technology
Along with the progress in epoch and the raising of quality of life, automobile progresses into ordinary family, and the increasing degree of automobile is far longer than the construction speed of urban road, and therefore traffic congestion day by day becomes the problem of puzzlement common people daily life.
How to solve the problem of traffic congestion, few in number for way driver at present, and not necessarily effectively reliable.Way obtains a traffic information by listening to local Traffic Announcement, and usual Traffic Announcement just carries out the report of road conditions at regular intervals between being all, and road conditions report content is provided by driver.Therefore the problem of Traffic Announcement is listened to have following: 1) to report section limited 2) road conditions reported have certain delay.The second way obtains traffic information by GPS device, and some GPS device can be driver's planning travelling line in conjunction with real-time road.The method has following problem: 1) be not that each GPS device has road conditions planning function.2) equipment relies on too strong, when not having GPS device, cannot learn traffic information.
Therefore need for numerous car owners provide method and the system conveniently can inquiring about real-time road condition information, to solve the imperfect of current traffic information acquisition, time delay, the problems such as equipment dependence.
Summary of the invention
The invention provides a kind of accurate road condition analyzing method and system based on real-time road video, can allow user whenever and wherever possible, the convenient real-time road condition information obtaining city, place accurately.
For this reason, the technical scheme of technical solution problem of the present invention is: a kind of accurate road condition analyzing method based on real-time road video, comprises the following steps:
1) each street erection video frequency pick-up head in urban district, obtains the real-time video in street;
2) processing real-time video is road conditions video, is road conditions picture by this road conditions Video Quality Metric;
3) road conditions picture identified and analyze, generating the formatted data being applicable to database purchase;
4) street obtaining real-time road video is mated with whole street, find out the street also not obtaining road conditions video;
5) traffic information in road conditions video street is not obtained by high moral map;
6) formatted data in step 3) and Gao De map datum gather the finally complete traffic information of formation.
Wherein, described step 2) in the sharpness of road conditions video must ensure by system identification and can analyze.
In described step 3), the analytical approach of road conditions picture is as follows: a, system obtain the road conditions picture in each street integral point moment, and road conditions picture uses the naming rule of street name first letter of pinyin _ time point to name, and preserves in the application server simultaneously; B, make each street road conditions picture reference picture and preserve in the application server, reference picture comprises three kinds, be the reference picture that street blocks up respectively, use the naming rule of street name first letter of pinyin _ time point _ YD to carry out the reference picture named, street comparatively blocks up; Use the naming rule of street name first letter of pinyin _ time point _ JYD to carry out the reference picture named, street is unimpeded, use the naming rule of street name first letter of pinyin _ time point _ CT to name; Vehicle in the reference picture in each street is evenly distributed, and in the reference picture that street blocks up, following distance is two meters, and in the reference picture that street comparatively blocks up, following distance is ten meters, and in the reference picture that street is unimpeded, following distance is 200 meters; When calculating following distance, needs are with the convergent-divergent multiple of the video frequency pick-up head in each street for radix, according to the physical length in street, calculate the engineer's scale in different street, thus determine the following distance in the reference picture of different streets; The rise time of c, foundation street name, road conditions picture determines reference picture, and road conditions picture compares respectively with corresponding reference picture, the reference picture that selected comparative result is the most close, according to the title of reference picture, directly draws analysis result.
Based on an accurate road condition analyzing system for real-time road video, comprise video frequency pick-up head, video processing service device, application server, database server and WEB server; Described video frequency pick-up head is as the source analyzing data; Described video processing service device is for the treatment of real-time video, generation road conditions picture; Described application server is used for identifying and analyzing road conditions picture; Described database server is used for storing data information; Described WEB server provides final road conditions to check service to user; Described video frequency pick-up head is erected at can monitor on the higher buildings of whole street, VPN is set up between this video frequency pick-up head and video processing service device, and video processing service device is connected by internal switch with application server, and application server and WEB server, database server are connected by internal switch, WEB server is the uniform outlet providing service to final user simultaneously, WEB server also needs a fixing public network IP address, allows user's access; Described video processing service device, application server, database server and WEB server are all placed in machine room.
The present invention has objective and accurate road condition analyzing source data, and the transmission between source data and server is stable secure fast, simultaneously by high moral map completion road condition data.Therefore the present invention can provide the traffic information in whole street to intelligent terminal user, improve the accuracy of arterial street traffic information, and then make user hold overall road conditions, allow user to use the real-time video of intelligent terminal direct viewing road conditions simultaneously, allow user more directly understand road conditions, significantly improve the impression that user uses.
Accompanying drawing explanation
Fig. 1 is Organization Chart of the present invention;
Fig. 2 is process flow diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is explained in detail.
With reference to Fig. 2, a kind of accurate road condition analyzing method based on real-time road video, comprises following steps:
1) each street erection video frequency pick-up head in urban district, obtains the real-time video in street.Before each street erection in urban district video frequency pick-up head, need to build overall architecture with reference to Fig. 1, as the basis of subsequent analysis.
Fig. 1 describes the overall architecture of the accurate road condition analyzing based on real-time road video.Mainly comprise video frequency pick-up head, video processing service device, application server, database server and WEB server.Video frequency pick-up head is as the source analyzing data, video processing service device is for the treatment of real-time video, generation road conditions picture, application server is used for identifying and analyzing road conditions picture, and database server is used for storing data information, and WEB server provides final road conditions to check service to user.Need to set up video processing service device, application server, WEB server and database server in the machine room of specialty.Video processing service device with application server, adopt internal switch to be connected between application server with WEB server.Application server, internal switch between WEB server and database server, is also adopted to connect.WEB server is as the uniform outlet providing service to final user simultaneously, and WEB server also needs a fixing public network IP address, allows user's access.
After overall architecture completes, the selected street needing erection video frequency pick-up head, determines video frequency pick-up head decorating position, and video frequency pick-up head needs to be erected to monitor on the higher buildings of whole street, need broadband or intelligent acess, in order to transmit real-time road video data simultaneously.According to street situation and video frequency pick-up head decorating position situation, suitable camera is chosen to different street, in order to ensure the sharpness of real-time road video.Existing similar road condition analyzing system, road conditions information gathering terminal is usually with intelligent terminal, or vehicle is carrier, carrier is larger by the impact of artificial subjectivity, simultaneously road conditions information gathering terminal go wrong after not easy-maintaining and process, and data acquisition is undertaken by video frequency pick-up head in the present invention, not only objective unaffected, ensure uninterruptedly to carry out data acquisition in 24 hours simultaneously, due to the existence of video processing service device, any one video frequency pick-up head breaks down, staff can receive prompting within the very first time, solve fault in the location of the shortest time inner position fault video camera and failure cause.After video frequency pick-up head has set up, need to debug the VPN between video frequency pick-up head and video processing service device, guarantee that network normally connects, video processing service device normally can receive the real-time video that camera sends.
Existing similar road condition analyzing system, adopt wireless network to transmit between its road conditions basic data and server, therefore data transmission can by the impact of terminal quality, the impact of wireless network signal power more, transmission data, without encryption, are easily produced safety problem by intercepting and capturing.Road conditions basic data in the present invention and adopt VPN special line to transmit between server, not only data rate is protected, and transmit the interference be subject to little for data simultaneously, and the security that data are transmitted is protected.
2) processing real-time video is road conditions video, is road conditions picture by this road conditions Video Quality Metric.Video processing service device receives real-time video from video frequency pick-up head, by Real-time Video Compression and recompile, is formed in the road conditions video can watched in Intelligent mobile equipment, needs to ensure that the sharpness of road conditions video can be analyzed by system identification.If the sharpness of road conditions video by system identification, then can not cannot generate road conditions picture by road conditions video, and then cannot carry out subsequent step.After road conditions video generates, every ten second video processing service device automatically from road conditions video, capture current road conditions image and save as corresponding road conditions picture, the size of this road conditions picture controls at below 50KB, and road conditions picture must can be employed server identification and analysis.
For reaching better effect, need to set video processing service device starts to generate road conditions picture time to each camera, due to every ten seconds, video processing service device can generate road conditions picture, therefore video processing service device is needed to be dispersed between ten seconds to the time point average mark that each camera starts to generate road conditions picture, avoid video processing service device to occur concentrating generation road conditions picture, cause the situation of surge pressure, guarantee performance and the stability of video processing service device.
3) road conditions picture identified and analyze, generating the formatted data being applicable to database purchase.Dispose picture discriminance analysis system in the application server, system takes polling schemas, in common buffer, detect the picture needing to identify and analyze, detect that picture determines three reference pictures of this road conditions picture according to the rise time of street name, road conditions picture after existing.Road conditions picture and three corresponding reference pictures are identified respectively according to the picture recognition technology in " image identification method and device " that online network technique (Beijing) company limited of Baidu proposes, road conditions picture after matching identification and reference picture, find out the reference picture that comparing result is the most close, title according to reference picture draws analysis result, analysis result is formatd simultaneously, preserve in a database, delete the picture that discriminance analysis is crossed, guarantee that limited storage space can not be occupied full because of history picture.
The analytical approach of above-mentioned road conditions picture is specific as follows: a, system obtain the road conditions picture in each street integral point moment, and road conditions picture uses the naming rule of " street name first letter of pinyin _ time point " to name, and preserves in the application server simultaneously; B, make each street road conditions picture reference picture and preserve in the application server, reference picture comprises three kinds, be the reference picture that street blocks up respectively, use the naming rule of " street name first letter of pinyin _ time point _ YD " to carry out the reference picture named, street comparatively blocks up; Use the naming rule of " street name first letter of pinyin _ time point _ JYD " to carry out the reference picture named, street is unimpeded, use " street name first letter of pinyin _ time point _ CT " and naming rule name; Vehicle in the reference picture in each street is evenly distributed, and in the reference picture that street blocks up, following distance is two meters, and in the reference picture that street comparatively blocks up, following distance is ten meters, and in the reference picture that street is unimpeded, following distance is 200 meters; When calculating following distance, needs are with the convergent-divergent multiple of the video frequency pick-up head in each street for radix, according to the physical length in street, calculate the engineer's scale in different street, thus determine the following distance in the reference picture of different streets; The rise time of c, foundation street name, road conditions picture determines reference picture, and road conditions picture compares respectively with corresponding reference picture, the reference picture that selected comparative result is the most close, according to the title of reference picture, directly draws analysis result.
In above-mentioned analytical approach, the reference picture in street stored respectively according to the time period, reduced because of light, and the impact that the factors such as building effects produce picture comparison result strengthens the accuracy of road condition analyzing result; In whole road condition analyzing process, road conditions picture is produced by video frequency pick-up head, analyzes source data objective and accurate, also strengthens the accuracy of road condition analyzing result; Whole analytic process is carried out in the application server, and do not carry out data communication with other servers with mutual, analysis result directly draws by referring to picture file name, does not carry out other process, improves analysis speed.
The present invention analyze source data from camera video data compared with the source data of existing similar analysis method, more objective preparation, do not disturb by other factors, simultaneously in discriminance analysis process, the source data analyzed is not adulterated other data, thus make analysis result more accurate than additive method.
4) street obtaining real-time road video is mated with whole street, find out the street also not obtaining road conditions video.Due to odjective cause, the erection of video frequency pick-up head can not be exhaustive, therefore some does not set up the street of video frequency pick-up head owing to not having the generation of real time video data, road condition analyzing cannot be carried out, blind area is not produced when checking traffic information to allow user, need the street of setting up video frequency pick-up head to mate with whole street, find out the street also not obtaining road conditions video, its street name is using as the foundation by the supplementary traffic information of high moral map acquisition.
5) traffic information in road conditions video street is not obtained by high moral map.Dispose high moral map interface system in the application server.Determining the street of not setting up video frequency pick-up head, obtaining by calling high moral map interface the traffic information not setting up the street of video frequency pick-up head, as the side information of the overall traffic information in street.The traffic information avoided without video frequency pick-up head street is that empty situation occurs.
6) formatted data in step 3) and Gao De map datum gather the finally complete traffic information of formation.In WEB service, dispose real-time road system, the analysis result of road conditions picture and Gao De map datum are gathered, thus to having the street of video frequency pick-up head and having carried out all standing without the street of video frequency pick-up head, ensure that the globality of data.The traffic information in whole street is provided to user, allows user on intelligent terminal, watch the road conditions video in street simultaneously, represent the current current intelligence of street road conditions intuitively to user, the perception that prompting user uses.
Claims (4)
1., based on an accurate road condition analyzing method for real-time road video, comprise following steps:
1) each street erection video frequency pick-up head in urban district, obtains the real-time video in street;
2) processing real-time video is road conditions video, is road conditions picture by this road conditions Video Quality Metric;
3) road conditions picture identified and analyze, generating the formatted data being applicable to database purchase;
4) street obtaining real-time road video is mated with whole street, find out the street also not obtaining road conditions video;
5) traffic information in road conditions video street is not obtained by high moral map;
6) formatted data in step 3) and Gao De map datum gather the finally complete traffic information of formation.
2. a kind of accurate road condition analyzing method based on real-time road video according to claim 1, is characterized in that: described step 2) in the sharpness of road conditions video must ensure by system identification and can analyze.
3. a kind of accurate road condition analyzing method based on real-time road video according to claim 1, it is characterized in that: in described step 3), the analytical approach of road conditions picture is as follows: a, system obtain the road conditions picture in each street integral point moment, road conditions picture uses the naming rule of street name first letter of pinyin _ time point to name, and preserves in the application server simultaneously; B, make each street road conditions picture reference picture and preserve in the application server, reference picture comprises three kinds, the reference picture that street blocks up respectively, the naming rule of street name first letter of pinyin _ time point _ YD is used to carry out the reference picture named, street comparatively blocks up, use the naming rule of street name first letter of pinyin _ time point _ JYD to carry out the reference picture named, street is unimpeded, use the naming rule of street name first letter of pinyin _ time point _ CT to name; Vehicle in the reference picture in each street is evenly distributed, and in the reference picture that street blocks up, following distance is two meters, and in the reference picture that street comparatively blocks up, following distance is ten meters, and in the reference picture that street is unimpeded, following distance is 200 meters; When calculating following distance, needs are with the convergent-divergent multiple of the video frequency pick-up head in each street for radix, according to the physical length in street, calculate the engineer's scale in different street, thus determine the following distance in the reference picture of different streets; The rise time of c, foundation street name, road conditions picture determines reference picture, and road conditions picture compares respectively with corresponding reference picture, the reference picture that selected comparative result is the most close, according to the title of reference picture, directly draws analysis result.
4. based on an accurate road condition analyzing system for real-time road video, it is characterized in that: comprise video frequency pick-up head, video processing service device, application server, database server and WEB server; Described video frequency pick-up head is as the source analyzing data; Described video processing service device is for the treatment of real-time video, generation road conditions picture; Described application server is used for identifying and analyzing road conditions picture; Described database server is used for storing data information; Described WEB server provides final road conditions to check service to user; Described video frequency pick-up head is erected at can monitor on the higher buildings of whole street, VPN is set up between this video frequency pick-up head and video processing service device, and video processing service device is connected by internal switch with application server, and application server and WEB server, database server are connected by internal switch, WEB server is the uniform outlet providing service to final user simultaneously, WEB server also needs a fixing public network IP address, allows user's access; Described video processing service device, application server, database server and WEB server are all placed in machine room.
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| CN109448376A (en) * | 2018-11-27 | 2019-03-08 | 科大国创软件股份有限公司 | A kind of road condition analyzing method and system based on video |
| CN112232193A (en) * | 2020-10-15 | 2021-01-15 | 南京邮电大学 | WEB-based road detection real-time viewing and operating method |
| CN116881831A (en) * | 2023-09-07 | 2023-10-13 | 湖南省国土资源规划院 | Road identification method, system and storage medium based on remote sensing technology |
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