CN1707545A - Overspeed vehicle photographic management system - Google Patents
Overspeed vehicle photographic management system Download PDFInfo
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- CN1707545A CN1707545A CN 200510071043 CN200510071043A CN1707545A CN 1707545 A CN1707545 A CN 1707545A CN 200510071043 CN200510071043 CN 200510071043 CN 200510071043 A CN200510071043 A CN 200510071043A CN 1707545 A CN1707545 A CN 1707545A
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Abstract
The present invention is one integrated overspeed vehicle monitoring system, which photographs overspeed vehicles, recognizes the license plate, completes image compression, decompression, record, storing and real-time transmission, transmits information, and completes vehicle information sorting, inquiry, law enforcement, etc in the information receiving end. It features the image data transmitting method. The overspeed vehicle photographing management system includes monitoring end and receiving end, and the monitoring end has set speed radar and road monitoring video camera. The image obtained with the road monitoring video camera is processed, stored and transmitted via GPRS or CDMA1X mobile communication network to the overspeed vehicle managing center server, before further treated in relevant work stations.
Description
Technical field
The present invention relates in the highway over-speed vehicles monitoring storage of compressed and decompressed, the record of the taking pictures of passing over-speed vehicles, car plate identification, image and real-time Transmission and information receiving end are realized the integrated system of bookkeepings such as letter sorting, inquiry, law enforcement to information of vehicles.
Background technology
The highway overspeed shooting be by be installed in fixedly hypervelocity monitoring equipment on the highway or vehicle-mounted mobile hypervelocity monitoring equipment to passing over-speed vehicles take pictures, car plate identification, recording storage, and the information of over-speed vehicles (this additional information of vehicle photo that comprises real-time grasp shoot) is sent to hypervelocity management center server and on-site law-enforcing workstation in real time by communication network, information of vehicles is inquired about and operation such as law enforcement by system, helped traffic police department to finish evidence obtaining and punishment accurately, in real time, efficiently over-speed vehicles.
In highway over-speed vehicles monitor procedure, identification to passing continuous vehicle is the difficult point of monitoring always, not enough or the radar of quantity can't effectively be differentiated continuous vehicle if video camera is taken pictures, will cause to capture the image information of first car, a large amount of leakage car phenomenons occurs, can't well finish monitoring over-speed vehicles.Realize effective identification, need design rational algorithm to address this problem to continuous vehicle.
No matter be mounted in fixing candid photograph of highway (especially highway) or vehicle-mounted mobile candid photograph mode, all be difficult to set up wired data transmission channel, need adopt wireless transmission method in the case.The method of present domestic solution wireless transmission generally adopts GPRS or CDMA1X network.This wireless network adopts the packet-switched data processing mode, and communication bandwidth is narrower, therefore requires picture size as much as possible little when transmitting vehicle image, therefore must adopt the mode of compression of images to transmit; And simultaneously because need in the comparison film vehicle especially vehicle license can accurately offer an explanation, thinking that law enforcement provides reliable basis, the requirement of comparison film sharpness is very high again.For satisfying this demand, need to select little and the image Compression technology that sharpness is very high of a kind of picture size.
Summary of the invention
Overspeed vehicle photographic management system monitoring client velocity radar sends the pulse microwave that frequency is 1000 megahertzes, if microwave is penetrated on actionless vehicle, is reflected, and its reflection wave frequency can not change, and remains 1000 megahertzes.Otherwise if vehicle is travelling, and speed is very fast, and so, according to the dobla effect, reflection wave frequency is just inequality with the emission wave frequency.By accurate mensuration to the fine variation of this microwave frequency, obtain the difference of frequency, just can draw the speed of automobile by converting.About per hour between 11 kilometers to 250 kilometers, the scope that tests the speed is big greatly for the scope that tests the speed of velocity radar, and degree of accuracy is also quite high, and error can be above 1 kilometer/hour.Radar all links to each other with computing machine by serial ports with the road monitoring dedicated video camera, if radar records the mobile object that movement velocity surpasses 10 kilometers/hour, will trigger the road monitoring dedicated video camera automatically vehicular traffic is carried out high-speed capture, and employing latest digital Flame Image Process (DSP) technology, the speed that is not less than 25 frames with average per second is carried out real-time fast identification processing to the car plate in the image, and the picture of choosing car plate position the best from the image of effective identification is stored, by GPRS or CDMA1X mobile communications network over-speed vehicles information is sent to the hypervelocity management center server, by server information is sent to relevant workstation in real time again, sorts, law enforcement, a processing such as inquiry.
The radar direction should be parallel with the target travel direction when testing the speed, when not parallel and when having certain angle, will form range rate error, i.e. angle error.Angle error increases and increases along with angle.During actual testing the speed, when vehicle by approaching far away or by closely sailing when far away, the vehicle that at the uniform velocity travels since between vehicle and the radar angle changing, the speed that records is also changing, during with 80 kilometers/hour speed approachings, the speed that records when angle is 45 ° only is 56.55 kilometers/hour as vehicle.
The continuous vehicle that the convergence radar travels has certain rate curve through out-of-date.
The continuous vehicle that travels away from radar also has certain rate curve through out-of-date.
Even the continuous vehicle of process also can be distinguished according to the waveform of radar velocity measurement at the same rate, in addition with the different license plate numbers of car plate identification software identification, thereby can well realize identification to continuous vehicle, solved the low problem of continuous vehicle snapshot rate, also the advantage place of this system just.
The present invention has finished the compression of images that meets the JPEG2000 standard and has handled with reduction, and is integrated in the application of overspeed shooting management system.Domestic and international most popular image compression format is a jpeg format at present, then adopts image Compression technology JPEG2000 form of new generation among the present invention.JPEG is the abbreviation of English Joint Photographic Experts Group (Joint Photographic Experts Group), be first a cover still image compression international standard of under International Standards Organization (ISO) leads, being engaged in council's formulation of still image compression standard formulation, and name (being JPEG) as science with " ISO10918-1 ".JPEG2000 is responsible to define by the JPEG tissue equally, and formal name is called " ISO 15444 ", and this new standard was just formulated to finish and begin in 2000 and used, so also claim JPEG2000.
The photo of this road monitoring dedicated video camera gained adopts the JPEG2000 standard that the over-speed vehicles photo is carried out encoding process, and cataloged procedure is as follows:
The first step: original image is resolved into each composition (luminance signal and carrier chrominance signal).
Second step: image and its each composition are resolved into the histogram photo.Image sheet is the basic processing unit of original image and reconstructed image.
The 3rd step: each image sheet is implemented wavelet transformation.
The 4th step: the encoding block that the wavelet coefficient after decomposing is quantized and forms rectangle.
The 5th step: " bit plane " coefficient in the encoding block is carried out entropy coding.
The 6th step: have fault-tolerance for making code stream, in code stream, add corresponding identifier.
The 7th step: the meaning of describing image and its each composition with optional file layout.
Demoder is the inverse process of scrambler, at first code stream is carried out the entropy decoding, then de-quantization and inverse wavelet transform, reconstructed image data at last.
Abandoning the block coding mode that JPEG adopted with the difference of traditional JPEG, and adopting many parsings coded system based on discrete wavelet transform algorithm (Wavelet Transform) based on discrete cosine transform (Discrete Cosine Transform).The discrete wavelet transform algorithm has bright development prospect as a kind of more advanced modern spectrum analysis instrument in Flame Image Process and art of image analysis.JPEG2000 also unites the JPEG coded system of colored tableaux employing and the JBIG coded system of 2 value images employing in addition, becomes the universal coding mode of corresponding various images.Principle wherein is at first source image data to be carried out wavelet transform, then the wavelet coefficient after the conversion is quantized, and then the data after quantizing is carried out entropy coding, forms output code flow at last.The process object of JPEG2000 no longer is an entire image, but image is divided into some image sheets (image tiles), then each image sheet is carried out independently coding-decoding operation.Before each image sheet is carried out wavelet transformation, all image sheets are carried out horizontal displacement by deducting an identical quantitative value.
The beneficial effect of this image data processing method is: compare with the picture format of JPEG, owing to adopted the discrete wavelet transform algorithm, the JPEG2000 image can convert a series of more effectively " wavelets " of storage pixel module to, therefore, the image compression rate of JPEG2000 form can improve 10% to 30% again on the JPEG basis, and the image after the compression seems fine and smooth more level and smooth.JPEG can only support lossy compression method, and compression back data can not be restored fully, and JPEG2000 then can support to diminish and can't harm two kinds of compact models simultaneously, even allows from diminishing to the progressive decompress(ion) that can't harm.But this can not lose raw information for some requirement and emphasize that the application of less file size and better quality (as the over-speed vehicles image) provides good solution, so it is more suitable for preserving some significance map pictures.If adopt the image transmission of JPEG2000 form, when receiving end is opened, will no longer be to show line by line, but allow image by dim clear gradually demonstration, thereby fully save and utilize limited bandwidth, accelerated display speed, this mainly has benefited from the mode that it can realize progressive transmission, be the profile of first images, progressively transmit data then, and improve constantly picture quality.JPEG2000 also supports so-called " area-of-interest " characteristic, promptly can specify the compression quality of area-of-interest on the image arbitrarily, can also select the part of appointment to decompress earlier (perhaps when recovering, specifying the decompression in some zone to require), so just can give top priority to what is the most important zone (as car plate) easily.In this respect, JPEG can't realize.Compare with JPEG, JPEG2000 is the tool advantage on color treatments, and it can be used for handling the nearly information of 256 passages, and JPEG only is confined to the RGB data.That is to say that JPEG2000 can describe another color mode (for example CMYK pattern etc.) with single file layout.
Description of drawings
Fig. 1 embodiment of the invention overspeed vehicle photographic management system synoptic diagram;
The relation of speed that Fig. 2 radar records and radar and vehicle variable angle;
The continuous vehicle that Fig. 3 convergence radar travels is through out-of-date gained rate curve;
The continuous vehicle that Fig. 4 travels away from radar is through out-of-date gained rate curve;
Fig. 5 JPEG2000 coding principle;
The Code And Decode process of Fig. 6 JPEG2000.
Embodiment
As shown in Figure 1, be an overspeed vehicle photographic management system, overspeed vehicle photographic management system monitoring client velocity radar sends the pulse microwave that frequency is 1000 megahertzes, if microwave is penetrated on actionless vehicle, be reflected, its reflection wave frequency can not change, and remains 1000 megahertzes.Otherwise if vehicle is travelling, and speed is very fast, and so, according to the dobla effect, reflection wave frequency is just inequality with the emission wave frequency.By accurate mensuration to the fine variation of this microwave frequency, obtain the difference of frequency, just can draw the speed of automobile by converting.About per hour between 11 kilometers to 250 kilometers, the scope that tests the speed is big greatly for the scope that tests the speed of velocity radar, and degree of accuracy is also quite high, and error can be above 1 kilometer/hour.Radar all links to each other with computing machine by serial ports with the road monitoring dedicated video camera, if radar records the mobile object that movement velocity surpasses 10 kilometers/hour, will trigger the road monitoring dedicated video camera automatically vehicular traffic is carried out high-speed capture, and employing latest digital Flame Image Process (DSP) technology, the speed that is not less than 25 frames with average per second is carried out real-time fast identification processing to the car plate in the image, and the picture of choosing car plate position the best from the image of effective identification is stored, by GPRS or CDMA1X mobile communications network over-speed vehicles information is sent to the hypervelocity management center server, by server information is sent to relevant workstation in real time again, sorts, law enforcement, a processing such as inquiry.
The radar direction should be parallel with the target travel direction when testing the speed, when not parallel and when having certain angle, will form range rate error, i.e. angle error.Angle error increases and increases along with angle.During actual testing the speed, when vehicle by approaching far away or by closely sailing when far away, the vehicle that at the uniform velocity travels is owing to angle between vehicle and the radar is changing, the speed that records is also changing, as vehicle during with 80 kilometers/hour speed approachings, gained speed as shown in Figure 2, the speed that records when angle is 45 ° only is 56.55 kilometers/hour.
The continuous vehicle that the convergence radar travels is seen Fig. 3 through out-of-date gained rate curve.
See Fig. 4 away from the continuous vehicle that radar travels through out-of-date gained rate curve.
3,4 as seen with reference to the accompanying drawings, even the continuous vehicle of process also can be distinguished according to the waveform of radar velocity measurement at the same rate, in addition with the different license plate numbers of car plate identification software identification, thereby can well realize identification to continuous vehicle, solved the low problem of continuous vehicle snapshot rate, also the advantage place of this system just.
The present invention has finished the compression of images that meets the JPEG2000 standard and has handled with reduction, and is integrated in the application of overspeed shooting management system.Domestic and international most popular image compression format is a jpeg format at present, then adopts image Compression technology JPEG2000 form of new generation among the present invention.JPEG is the abbreviation of English Joint Photographic Experts Group (Joint Photographic Experts Group), be first a cover still image compression international standard of under International Standards Organization (ISO) leads, being engaged in council's formulation of still image compression standard formulation, and name (being JPEG) as science with " ISO10918-1 ".JPEG2000 is responsible to define by the JPEG tissue equally, and formal name is called " ISO 15444 ", and this new standard was just formulated to finish and begin in 2000 and used, so also claim JPEG2000.
The photo of this road monitoring dedicated video camera gained adopts the JPEG2000 standard that the over-speed vehicles photo is carried out encoding process, its coding principle as shown in Figure 5, cataloged procedure is as follows:
The first step: original image is resolved into each composition (luminance signal and carrier chrominance signal).
Second step: image and its each composition are resolved into the histogram photo.Image sheet is the basic processing unit of original image and reconstructed image.
The 3rd step: each image sheet is implemented wavelet transformation.
The 4th step: the encoding block that the wavelet coefficient after decomposing is quantized and forms rectangle.
The 5th step: " bit plane " coefficient in the encoding block is carried out entropy coding.
The 6th step: have fault-tolerance for making code stream, in code stream, add corresponding identifier.
The 7th step: the meaning of describing image and its each composition with optional file layout.
Demoder is the inverse process of scrambler, at first code stream is carried out the entropy decoding, then de-quantization and inverse wavelet transform, reconstructed image data at last.
Adopted the over-speed vehicles photo example of JPEG2000 standard compression, original photo is the bitmap of BMP form, is of a size of the 384*288*24 position, and file size is 331830 bytes; After the compression of Joint Photographic Experts Group form, be of a size of 24151 bytes, the picture clarity after the compression descends, and it is fuzzy that the car plate part has shown; With after the JPEG2000 standard format compression, be of a size of 10122 bytes, size has only 41.91% of jpeg format photo, but sharpness especially the effect of car plate is better than JPEG.
The above only is preferred embodiment of the present invention; be not to limit to the present invention with this; therefore; all all and structure of the present invention, device, feature etc. are approximate, identical; be allly to replace and modify etc. according to patent claim of the present invention being equal to of doing, all should still belong within the scope of patented claim protection of the present invention.
Claims (4)
1, a kind of overspeed vehicle photographic management system is characterized in that: this overspeed vehicle photographic management system comprises monitoring client and receiving end, wherein:
This monitoring client is provided with velocity radar and road monitoring dedicated video camera, this velocity radar all is connected with computing machine by serial ports with the road monitoring dedicated video camera, this velocity radar is transmitted into the pulse microwave of certain frequency on the vehicle of operation, the frequency of the pulse microwave that reflection wave frequency that this pulse microwave reflects and velocity radar send changes, according to the dobla effect, calculate the travelling speed of operational vehicle by this frequency change, when the movement velocity that this velocity radar is checked and examined operational vehicle reaches certain value, trigger the work of road monitoring dedicated video camera, and this operational vehicle carried out high-speed capture, the treated storage of this road monitoring dedicated video camera picture shot back is sent to receiving end by GPRS or CDMA1X mobile communications network with over-speed vehicles information;
This receiving end comprises the hypervelocity management center server, and the picture information that this hypervelocity management center server receives is sent to a work of treatment such as relevant workstation sorts, enforces the law, inquiry in real time.
2, overspeed vehicle photographic management system as claimed in claim 1, it is characterized in that: the speed that this road monitoring dedicated video camera picture shot adopts DSP to be not less than 25 frames with average per second is carried out real-time fast identification to the car plate in the image and is handled, and the picture of choosing car plate position the best from the image of effective identification is stored.
3, overspeed vehicle photographic management system as claimed in claim 2 is characterized in that: the pictorial information of described storage adopts the JPEG2000 standard to carry out encoding process, and cataloged procedure is as follows:
The first step: original image is resolved into each composition, comprise luminance signal and carrier chrominance signal;
Second step: image and its each composition are resolved into the histogram photo;
The 3rd step: each image sheet is implemented wavelet transformation;
The 4th step: the encoding block that the wavelet coefficient after decomposing is quantized and forms rectangle;
The 5th step: " bit plane " coefficient in the encoding block is carried out entropy coding;
The 6th step: have fault-tolerance for making code stream, in code stream, add corresponding identifier;
The 7th step: the meaning of describing image and its each composition with optional file layout.
4, overspeed vehicle photographic management system as claimed in claim 3 is characterized in that: described image sheet is the basic processing unit of original image and reconstructed image.
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| CN 200510071043 CN1707545A (en) | 2005-05-23 | 2005-05-23 | Overspeed vehicle photographic management system |
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| CN 200510071043 CN1707545A (en) | 2005-05-23 | 2005-05-23 | Overspeed vehicle photographic management system |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100440972C (en) * | 2006-11-23 | 2008-12-03 | 北京航空航天大学 | Mobile device for measuring speed and taking snap pictures |
| CN101408718B (en) * | 2007-10-12 | 2011-01-19 | 上海宝康电子控制工程有限公司 | Road crossing motor vehicle driving person checking and controlling system |
| CN102024327A (en) * | 2009-09-16 | 2011-04-20 | 西安立人科技股份有限公司 | Multi-radar speed indicator communication method, communication manager and multilane snap shooting system |
| CN102147973A (en) * | 2010-02-08 | 2011-08-10 | 琦胜科技有限公司 | Speed-measuring picture-taking and image-pickup system as well as speed-measuring and picture-taking system |
| CN101762815B (en) * | 2010-01-11 | 2011-11-23 | 大连海事大学 | Maritime shore-based radar image transmission system and transmission method thereof |
| CN102768803A (en) * | 2012-07-31 | 2012-11-07 | 株洲南车时代电气股份有限公司 | Vehicle intelligent monitoring and recording system and method based on radar and video detection |
| US8830299B2 (en) | 2010-02-08 | 2014-09-09 | OOO “Korporazija Stroy Invest Proekt M” | Method and device for determining the speed of travel and coordinates of vehicles and subsequently identifying same and automatically recording road traffic offences |
| CN104064034A (en) * | 2013-03-24 | 2014-09-24 | 张生为 | Whole-process monitoring vehicle reminding system of highway |
| CN104200676A (en) * | 2014-09-16 | 2014-12-10 | 安徽达尔智能控制***有限公司 | Vehicle overspeed query system based on intelligent traffic |
| CN104952260A (en) * | 2015-06-26 | 2015-09-30 | 广西大学 | Wireless traffic monitoring device |
| CN104967817A (en) * | 2015-06-18 | 2015-10-07 | 黑龙江八一农垦大学 | Computer image processing system |
| CN106066612A (en) * | 2016-05-16 | 2016-11-02 | 烟台三航雷达服务技术研究所有限公司 | A kind of method and apparatus realizing radar remotely aobvious control |
| CN106469477A (en) * | 2016-08-31 | 2017-03-01 | 北京汇通天下物联科技有限公司 | A kind of driving event recording method and system |
| CN106856045A (en) * | 2015-12-08 | 2017-06-16 | 黄波 | It is a kind of based on wireless technology can anti-intrusion traffic surveillance and control system |
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- 2005-05-23 CN CN 200510071043 patent/CN1707545A/en active Pending
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100440972C (en) * | 2006-11-23 | 2008-12-03 | 北京航空航天大学 | Mobile device for measuring speed and taking snap pictures |
| CN101408718B (en) * | 2007-10-12 | 2011-01-19 | 上海宝康电子控制工程有限公司 | Road crossing motor vehicle driving person checking and controlling system |
| CN102024327A (en) * | 2009-09-16 | 2011-04-20 | 西安立人科技股份有限公司 | Multi-radar speed indicator communication method, communication manager and multilane snap shooting system |
| CN101762815B (en) * | 2010-01-11 | 2011-11-23 | 大连海事大学 | Maritime shore-based radar image transmission system and transmission method thereof |
| MD4332C1 (en) * | 2010-02-08 | 2015-09-30 | Общество С Ограниченной Ответственностью "Корпорация "Строй Инвест Проект М" | Process for determining the movement speed and coordinates of vehicles with their subsequent identification and automatic recording of traffic rules violations and device for its implementation |
| CN102147973A (en) * | 2010-02-08 | 2011-08-10 | 琦胜科技有限公司 | Speed-measuring picture-taking and image-pickup system as well as speed-measuring and picture-taking system |
| US8830299B2 (en) | 2010-02-08 | 2014-09-09 | OOO “Korporazija Stroy Invest Proekt M” | Method and device for determining the speed of travel and coordinates of vehicles and subsequently identifying same and automatically recording road traffic offences |
| WO2011094974A1 (en) * | 2010-02-08 | 2011-08-11 | 琦胜科技有限公司 | Velocity-measuring photographic and camera system and velocity-measuring photographic system |
| CN102918573B (en) * | 2010-02-08 | 2016-03-16 | “建筑投资项目M公司”有限责任公司 | Determine car speed and coordinate and follow-up identification and automatic the recording traffic method of breaking rules and regulations and the equipment realizing described method are carried out to it |
| CN102768803A (en) * | 2012-07-31 | 2012-11-07 | 株洲南车时代电气股份有限公司 | Vehicle intelligent monitoring and recording system and method based on radar and video detection |
| CN102768803B (en) * | 2012-07-31 | 2014-10-22 | 株洲南车时代电气股份有限公司 | Vehicle intelligent monitoring and recording system and method based on radar and video detection |
| CN104064034A (en) * | 2013-03-24 | 2014-09-24 | 张生为 | Whole-process monitoring vehicle reminding system of highway |
| CN104200676A (en) * | 2014-09-16 | 2014-12-10 | 安徽达尔智能控制***有限公司 | Vehicle overspeed query system based on intelligent traffic |
| CN104967817A (en) * | 2015-06-18 | 2015-10-07 | 黑龙江八一农垦大学 | Computer image processing system |
| CN104952260A (en) * | 2015-06-26 | 2015-09-30 | 广西大学 | Wireless traffic monitoring device |
| CN106856045A (en) * | 2015-12-08 | 2017-06-16 | 黄波 | It is a kind of based on wireless technology can anti-intrusion traffic surveillance and control system |
| CN106066612A (en) * | 2016-05-16 | 2016-11-02 | 烟台三航雷达服务技术研究所有限公司 | A kind of method and apparatus realizing radar remotely aobvious control |
| CN106469477A (en) * | 2016-08-31 | 2017-03-01 | 北京汇通天下物联科技有限公司 | A kind of driving event recording method and system |
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