CN102722985A - Laser video vehicle detection system - Google Patents
Laser video vehicle detection system Download PDFInfo
- Publication number
- CN102722985A CN102722985A CN2012102166676A CN201210216667A CN102722985A CN 102722985 A CN102722985 A CN 102722985A CN 2012102166676 A CN2012102166676 A CN 2012102166676A CN 201210216667 A CN201210216667 A CN 201210216667A CN 102722985 A CN102722985 A CN 102722985A
- Authority
- CN
- China
- Prior art keywords
- laser
- video
- vehicle
- camera
- picture
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Traffic Control Systems (AREA)
- Closed-Circuit Television Systems (AREA)
Abstract
The invention relates to a method for combining laser and a video analysis technology. A light spot is formed on the road surface through a laser, a camera points at the light spot area and takes a picture, and the light spot occurs on the picture taken by the camera. Because a certain angle is formed between laser beams and the field-of-view direction of the camera, when a vehicle enters the picture and touches the laser beams, the light spot on the picture of the camera moves; the displacement is analyzed through video, and whether a vehicle reaches the light spot area can be judged; if a front light spot and a rear light spot are formed on the travel path of the vehicle, the time difference of the vehicle passing through the two light spots can be detected, so that the aim of measuring the speed of the vehicle is fulfilled; and moreover, in order to make the detected area cover the section of the whole road, a plurality of laser beams can be formed according to certain intervals.
Description
Technical field
The present invention relates to a kind of vehicle detection and velocity measuring technique that is used for field of traffic, be specifically related to the vehicle detecting system that a kind of laser technology combines with video technique.
Background technology
Detecting vehicle is the indispensable technology in the traffic control system with measuring road speed.Existing mainstream technology mainly contains following three kinds of forms:
1. radar: utilize the Doppler effect of radiowave to come the vehicle in going is positioned and tests the speed.The cost of this technology is higher, and the fashionable Installation and Debugging in field that are applied in multilane are relatively more difficult, occur the wrong report between the neighboring trace easily.
2. ground induction coil detects: the toroidal inductance that is utilized in the laying road surface under detects vehicle to the sensitivity characteristic of metal.The significant disadvantages of this technology is to destroy the road surface, and the coil under the road surface is often damaged by pressure or because of alternately being damaged of winter and summer, so its construction and maintenance cost height.
Video technique: adopt video camera to take the video image of the vehicle on the highway, computing machine carries out analytical calculation to Video stream information, thereby obtains relevant information of vehicles.This technology be difficult to overcome since the interference that variation caused of surround lighting and night automobile headlamp interference.Can't not use under the situation of surround lighting having.
Summary of the invention
The purpose of this invention is to provide round-the-clockly, do not destroy the road surface, Installation and Debugging are easy, the vehicle detecting system that accuracy of detection and accuracy are high.
In order to achieve the above object, the present invention adopts following technical scheme:
This laser video vehicle detecting system comprises laser instrument, and video camera, laser instrument and video camera are installed on the support of highway top, and the two at intervals; Laser beam is beaten on the road surface and is formed a luminous point, and this light point area of camera is taken, and will occur the image of this luminous point on the picture of shot by camera.After the vehicle that sails into touches this Shu Jiguang, laser will move on on the vehicle body from ground, so tangible displacement will take place the luminous point image on the picture of video camera.Through video analysis, can calculate this displacement, when it surpasses certain threshold value, can judge car and arrive.
Laser instrument and video camera all point to the road surface with the road surface with certain angle, and laser instrument emission beam of laser is beaten on the road surface; This light point area of camera is taken, and this luminous point will occur on the picture of shot by camera.The displacement that calculates this luminous point through video analysis can judge whether that vehicle reaches.
Two sublasers, its light beam is beaten the front and back position at direction of traffic respectively.Through to shot by camera to video pictures analyze, thereby detect the mistiming of vehicle through two luminous points, can calculate the speed of passing through of vehicle by analysis meter.And can judge the direction of traffic of vehicle.
For detection zone covers whole highway section, can adopt many sublasers, get multiple laser by certain intervals.If get row's laser spot, but the arrival information of measuring vehicle then; If get two row's laser spots, but then arrival information, the speed of a motor vehicle and the direction of traffic of measuring vehicle.
Laser instrument and video camera are all installed perpendicular to the road surface, and laser instrument emission beam of laser is beaten on the road surface; This light point area of camera is taken, and this luminous point will occur on the picture of shot by camera.The displacement that calculates this luminous point through video analysis can judge whether that vehicle reaches.
Two sublasers, its light beam is beaten the front and back position at direction of traffic respectively.Through to shot by camera to video pictures analyze, thereby detect the mistiming of vehicle through two luminous points, can calculate the speed of passing through of vehicle by analysis meter.And can judge the direction of traffic of vehicle.
For detection zone covers whole highway section, can adopt many sublasers and Duo Zhi video camera, get multiple laser by certain intervals.If get row's laser spot, but the arrival information of measuring vehicle then; If get two row's laser spots, but then arrival information, the speed of a motor vehicle and the direction of traffic of measuring vehicle.
The video flowing of laser instrument and video camera carries out synchronous stroboscopic, and promptly video camera output video synchronizing signal removes to control laser instrument, makes laser instrument luminous in the time of the every frame picture exposure of video camera, and all the other times are not luminous.Under such mode of operation, the time shutter of video camera can be very short, and is very low to the light sensitivity of surround lighting, therefore just overcome the influence of all surround lightings.Can also utilize laser light source most effectively like this, and make the average power of laser instrument output minimum, thereby prolong the life-span of laser instrument.
Install bandpass filter additional before the sensor devices of video camera, its centre wavelength is the emission wavelength of laser instrument.The effect of bandpass filter is the light wave beyond the filtering optical maser wavelength, further eliminates the interference of sunlight or other surround lighting and automobile front and back lamp to camera review.
Video camera is the intelligent camera of band digital signal processor DSP, and the video analysis program is moved therein.Video camera also can be general video camera, and the video analysis program is moved in host computer.
Description of drawings
Fig. 1, the 5th, the present invention detect the ultimate principle figure of vehicle;
Fig. 2, the 6th, the present invention measure the ultimate principle figure of the speed of a motor vehicle;
Fig. 3,4,7, the 8th, the present invention adopt multiple laser to cover the ultimate principle figure of a section.
Embodiment
Scheme 1:
Laser instrument and video camera are installed on the support of highway top, and the two at intervals; They all point to the road surface with the road surface with certain angle; Laser instrument emission beam of laser is beaten on the road surface; This light point area of camera is taken, and this luminous point will occur on the picture of shot by camera.Its principle is as shown in Figure 1.Because the visual field direction of laser beam and video camera has certain angle, after vehicle got into picture and touched light beam, the luminous point on the picture of video camera will be subjected to displacement.Through this displacement of video analysis, can judge whether that vehicle arrives, and realizes vehicle location.
Like Fig. 3, shown in Figure 1, for detection zone covers whole highway section, can adopt many sublasers 2, get multiple laser by certain intervals.
For overcome surround lighting and night automobile headlamp interference; In order to prolong the life-span of laser instrument 2; Taked such measure: laser instrument 2 carries out synchronous stroboscopic with the video flowing of video camera 1; Be that video camera 1 output video synchronizing signal control laser instrument 2 is luminous, make laser instrument 2 luminous in the time of the every frame picture exposure of video camera, all the other times are not luminous.Under such mode of operation, the time shutter of video camera 1 can be very short, and is very low to the light sensitivity of surround lighting, therefore just overcome the influence of all surround lightings.Simultaneously can also utilize laser instrument 2 light sources most effectively, make the average power of laser instrument 2 outputs minimum, thus the life-span of having improved laser instrument 2.
In order further to overcome the influence of surround lighting, before the sensor devices of video camera 1, also can install bandpass filter additional, its centre wavelength is the emission wavelength of laser instrument 2.The effect of bandpass filter is the light wave beyond the filtering optical maser wavelength, eliminates the interference of sunlight or other surround lighting and automobile front and back lamp to camera review.
Adopt the video image information that said method obtained very clean; Almost there is not the interference of other picture noise; The displacement of the photoelectricity that is obtained is very clear; The good information environment has been created in this analytical calculation for image, and is therefore very low to the requirement of image analysis technology, reduced the cost of entire product.
Video camera can be band digital signal processor (DSP) intelligent camera, and the video analysis program is moved therein.Video camera also can be general video camera, and the video analysis program is moved in host computer.
Scheme 2:
With scheme 1 difference is to adopt double laser instrument 2, and shown in Fig. 2 and 4, its light beam is beaten the front and back position at direction of traffic respectively.So just, can detect the mistiming of vehicle, get final product the speed of passing through of analytical calculation vehicle through two luminous points.
Scheme 3:
With scheme 1 difference be that laser instrument 2 is installed in the top perpendicular to the road surface with video camera 1, on the road surface, get one or row's luminous point.Shown in Fig. 5 and 7.
Scheme 4:
With scheme 2 differences be that laser instrument 2 is installed in the top perpendicular to the road surface with video camera 1, on the road surface, get one or row's luminous point.Shown in Fig. 6 and 8.
Be example to measure two tracks, as shown in Figure 4.Video camera 1 is erected at the middle in two tracks, and two groups of laser instruments 2 are set up on its both sides respectively.One group is sent 4 bundle laser, and another group is sent 6 bundle laser.They form two row's laser spots respectively.Any car the phenomenon of omission so just can not occur through touching one group of light beam up to I haven't seen you for ages.
If vehicle through two groups of above laser beam, can be used as the mean value of its mistiming the time parameter of design speed.
Every sublaser 2 luminous all with the video of the video camera synchronous stroboscopic that makes public.Video camera adds a bandpass filter, surround lighting or parasitic light beyond the filtering laser.Round-the-clock request for utilization can be satisfied like this, the serviceable life of laser instrument can be prolonged again.
The above is merely 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, characteristic etc. are approximate, identical, promptly allly are equal to replacement and modify etc. according to what patent claim of the present invention was done, all should still belong within the scope of patented claim protection of the present invention.
Claims (10)
1. a laser video vehicle detecting system comprises several laser instruments, several video cameras, and the back-end data disposal system, laser instrument and video camera are installed on the support of highway top side by side, and the two is at intervals; It is characterized in that:
The laser beam that described laser instrument is got forms a luminous point on the road surface, this light point area of camera is taken, and will occur the image of this luminous point on the picture of shot by camera; After the vehicle that sails into touches this Shu Jiguang, laser spot will move on on the vehicle body from ground, so tangible displacement will take place the luminous point image on the picture of video camera; Through video analysis, can calculate this displacement, when it surpasses certain threshold value, can judge car and arrive.
2. a kind of laser video vehicle detecting system as claimed in claim 1 is characterized in that:
Laser beam that described laser instrument is got and road surface form an acute angle angle, and laser instrument emission beam of laser is beaten on the road surface; This light point area of camera is taken, and this luminous point will occur on the picture of shot by camera; The displacement that calculates this luminous point through video analysis can judge whether that vehicle reaches.
3. a kind of laser video vehicle detecting system as claimed in claim 1 is characterized in that:
Laser beam that described laser instrument is got and road surface form a right angle angle, and laser instrument emission beam of laser is beaten on the road surface; This light point area of camera is taken, and this luminous point will occur on the picture of shot by camera; The displacement that calculates this luminous point through video analysis can judge whether that vehicle reaches.
4. like claim 1,2 or 1,3 described a kind of laser video vehicle detecting systems, it is characterized in that:
Said laser instrument comprises two groups of laser instruments, and the laser beam that these two groups of laser instruments are got is beaten the front and back position at direction of traffic respectively; Through to shot by camera to video pictures analyze, thereby detect the mistiming of vehicle through two luminous points, can calculate the speed of passing through of vehicle by analysis meter; And can judge the direction of traffic of vehicle.
5. like claim 1,2 or 1,3 described a kind of laser video vehicle detecting systems, it is characterized in that:
Said several laser instruments are installed on the support of highway top side by side; Its laser beam of getting covers each driving lane of this highway section, can measure the arrival information of whole highway section space vehicle through the displacement of this luminous point of video analysis calculating.
6. like claim 1,2 or 1,3 described a kind of laser video vehicle detecting systems, it is characterized in that:
Said several laser instruments are divided into two groups; The laser beam that these two groups of laser instruments are got is beaten the front and back position at direction of traffic respectively; The laser beam that these two groups of laser instruments are got covers each driving lane of this highway section; Through to shot by camera to video pictures analyze, thereby detect the mistiming of vehicle through two luminous points, can calculate the speed of passing through of whole highway section space vehicle by analysis meter; And can judge the direction of traffic of vehicle.
7. like right 1 described a kind of laser video vehicle detecting system, it is characterized in that:
The video flowing of said laser instrument and video camera carries out synchronous stroboscopic, and promptly video camera output video synchronizing signal removes to control laser instrument, makes laser instrument luminous in the time of the every frame picture exposure of video camera, and all the other times are not luminous.
8. like right 1 described a kind of laser video vehicle detecting system, it is characterized in that:
Install bandpass filter additional before the sensor devices of said video camera, its centre wavelength is the emission wavelength of laser instrument.
9. like right 1 described a kind of laser video vehicle detecting system, it is characterized in that:
Said video camera is the intelligent camera of band digital signal processor DSP, and the video analysis program is moved therein.
10. like right 1 described a kind of laser video vehicle detecting system, it is characterized in that: said video camera is general video camera, and the video analysis program is moved in host computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102166676A CN102722985A (en) | 2012-06-28 | 2012-06-28 | Laser video vehicle detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102166676A CN102722985A (en) | 2012-06-28 | 2012-06-28 | Laser video vehicle detection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102722985A true CN102722985A (en) | 2012-10-10 |
Family
ID=46948729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102166676A Pending CN102722985A (en) | 2012-06-28 | 2012-06-28 | Laser video vehicle detection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102722985A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104132618A (en) * | 2014-08-08 | 2014-11-05 | 张荣楠 | High-speed automatic vehicle length, width and height detection device |
| CN104575097A (en) * | 2015-01-05 | 2015-04-29 | 西安交通大学 | Parking space identification method and device by using laser light knife as auxiliary light source |
| CN104751643A (en) * | 2015-03-16 | 2015-07-01 | 深圳市砝石激光测控有限公司 | Accurate speed measurement method and system of large laser spot |
| CN105608907A (en) * | 2016-03-11 | 2016-05-25 | 昆山市工研院智能制造技术有限公司 | Vehicle detection system |
| CN107782907A (en) * | 2016-08-26 | 2018-03-09 | 合盈光电科技股份有限公司 | Traveling vehicle measurement system and related method |
| CN107784839A (en) * | 2016-08-26 | 2018-03-09 | 合盈光电科技股份有限公司 | Vehicle detection system and method thereof |
| RU2658120C1 (en) * | 2017-08-30 | 2018-06-19 | Илья Викторович Барский | Multi-purpose multiband laser meter for vehicle transmission with video fixation |
| CN113781798A (en) * | 2021-11-11 | 2021-12-10 | 四川九通智路科技有限公司 | Polarized light-based vehicle management and control method and system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07244796A (en) * | 1994-03-04 | 1995-09-19 | Mitsubishi Heavy Ind Ltd | Vehicle detector |
| JP2001357488A (en) * | 2000-06-13 | 2001-12-26 | Mitsubishi Heavy Ind Ltd | Vehicle dimension measuring device |
| CN2857132Y (en) * | 2005-12-12 | 2007-01-10 | 上海高德威智能交通系统有限公司 | Central mode type vehicle information acquisition system |
| CN101155297A (en) * | 2006-09-29 | 2008-04-02 | 欧普罗科技股份有限公司 | Monitoring camera and system combining laser positioning |
| CN101206229A (en) * | 2007-12-11 | 2008-06-25 | 长安大学 | Method for matching vehicle speed based on linear array CCD image |
| CN201429901Y (en) * | 2009-06-29 | 2010-03-24 | 山东神戎电子股份有限公司 | Road vehicle monitoring device |
-
2012
- 2012-06-28 CN CN2012102166676A patent/CN102722985A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07244796A (en) * | 1994-03-04 | 1995-09-19 | Mitsubishi Heavy Ind Ltd | Vehicle detector |
| JP2001357488A (en) * | 2000-06-13 | 2001-12-26 | Mitsubishi Heavy Ind Ltd | Vehicle dimension measuring device |
| CN2857132Y (en) * | 2005-12-12 | 2007-01-10 | 上海高德威智能交通系统有限公司 | Central mode type vehicle information acquisition system |
| CN101155297A (en) * | 2006-09-29 | 2008-04-02 | 欧普罗科技股份有限公司 | Monitoring camera and system combining laser positioning |
| CN101206229A (en) * | 2007-12-11 | 2008-06-25 | 长安大学 | Method for matching vehicle speed based on linear array CCD image |
| CN201429901Y (en) * | 2009-06-29 | 2010-03-24 | 山东神戎电子股份有限公司 | Road vehicle monitoring device |
Non-Patent Citations (1)
| Title |
|---|
| GWANG-GOOK LEE ETC.: "Pedestrian Counting using an IR Line Laser", 《INTERNATIONAL CONFERENCE ON CONVERGENCE AND HYBRID INFORMATION TECHNOLOGY 2008》, 31 December 2008 (2008-12-31), pages 482 - 485 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104132618A (en) * | 2014-08-08 | 2014-11-05 | 张荣楠 | High-speed automatic vehicle length, width and height detection device |
| CN104575097A (en) * | 2015-01-05 | 2015-04-29 | 西安交通大学 | Parking space identification method and device by using laser light knife as auxiliary light source |
| CN104751643A (en) * | 2015-03-16 | 2015-07-01 | 深圳市砝石激光测控有限公司 | Accurate speed measurement method and system of large laser spot |
| CN105608907A (en) * | 2016-03-11 | 2016-05-25 | 昆山市工研院智能制造技术有限公司 | Vehicle detection system |
| CN107782907A (en) * | 2016-08-26 | 2018-03-09 | 合盈光电科技股份有限公司 | Traveling vehicle measurement system and related method |
| CN107784839A (en) * | 2016-08-26 | 2018-03-09 | 合盈光电科技股份有限公司 | Vehicle detection system and method thereof |
| RU2658120C1 (en) * | 2017-08-30 | 2018-06-19 | Илья Викторович Барский | Multi-purpose multiband laser meter for vehicle transmission with video fixation |
| CN113781798A (en) * | 2021-11-11 | 2021-12-10 | 四川九通智路科技有限公司 | Polarized light-based vehicle management and control method and system |
| CN113781798B (en) * | 2021-11-11 | 2022-07-26 | 四川九通智路科技有限公司 | Polarized light-based vehicle management and control method and system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102722985A (en) | Laser video vehicle detection system | |
| CN105922991B (en) | Based on the lane departure warning method and system for generating virtual lane line | |
| KR101071362B1 (en) | Vehicular object ranging system and method of operation | |
| CN105785370B (en) | Object detection device and object detection method | |
| JP6659367B2 (en) | Object detection device and object detection method | |
| CN103455144B (en) | Vehicle-mounted man-machine interaction system and method | |
| CN101187671B (en) | Method and device for determining automobile driving speed | |
| CN104282158B (en) | A kind of traffic lights intelligent control method and system | |
| CN104050806B (en) | Method for detecting traffic infractions in a traffic light zone through rear end measurement by a radar device | |
| CN101498889B (en) | Multi-eye stereo camera shooting method and device | |
| JP2015506474A (en) | Method and apparatus for wheel independent speed measurement in a vehicle | |
| CN203479672U (en) | Split type automobile exhaust remote sensing testing device | |
| CN103593649A (en) | Lane line detection method for lane departure early warning | |
| CN102747696B (en) | Intelligent road sign and application method thereof | |
| CN102819951A (en) | Road target detection system, road target detection method and road target detection device | |
| CN106327880B (en) | A kind of speed recognition methods and its system based on monitor video | |
| CN109444872B (en) | Pedestrian and vehicle distinguishing method and device, computer equipment and storage medium | |
| KR102505867B1 (en) | Multi-vehicle data analysis and traffic signal control method and system using LiDar sensor | |
| CN103295403A (en) | Traffic flow visual inspection method | |
| KR20180065730A (en) | Vehicle speed correcting apparatus and method for speed detection accuracy of video-radar fusion | |
| WO2021116752A1 (en) | Systems and methods for selectively decelerating a vehicle | |
| CN101487970A (en) | Mirror-image stereo camera apparatus and method | |
| CN103149603A (en) | Road weather detection method based on video | |
| CN104091450A (en) | Video tachymeter and video speed measurement method | |
| JP6851111B2 (en) | Railroad crossing obstacle detection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| DD01 | Delivery of document by public notice |
Addressee: Tian Guocheng Document name: Notification that Application Deemed to be Withdrawn |
|
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121010 |