CN105046968B - A kind of motor bus identification and grasp shoot method, apparatus and system - Google Patents
A kind of motor bus identification and grasp shoot method, apparatus and system Download PDFInfo
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- CN105046968B CN105046968B CN201510347158.0A CN201510347158A CN105046968B CN 105046968 B CN105046968 B CN 105046968B CN 201510347158 A CN201510347158 A CN 201510347158A CN 105046968 B CN105046968 B CN 105046968B
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Abstract
The invention discloses a kind of identification of motor bus and grasp shoot method and system, including：Scanning type laser device, motor bus identifying device, intelligent candid device, radio transmitting device, the vertical rod of scanning constant formula laser aid and intelligent candid device；The scanning type laser device uses separate unit rotary scanning type laser range finder, is fixedly installed in the vertical rod in the side in turnpike driving section or isolation strip, its plane of scanning motion is vertical with the track direction；The motor bus identifying device, the appearance profile information of reception is matched with contour of the vehicle profile information model library, and coordinates multiple echo detection technique, identifies motor bus；The intelligent candid device is captured according to the instruction of the motor bus vehicle recognition unit, obtains the headstock or tailstock image information and the number-plate number of motor bus traveling.The system is not affected by the weather, it is easy to is installed and is safeguarded, motor bus recognition accuracy is high, and intelligence degree height uses manpower and material resources sparingly input.
Description
Technical field
The present invention relates to technical field of intelligent traffic, a kind of specific motor bus identification and grasp shoot method, apparatus and system.
Background technology
Expressway traffic safety always receives much concern, and to be the dead group of group hinder normal in especially big traffic accident with motor bus
Visitor, to prevent fatigue driving, it is ensured that long-distance passenger transportation safety, country puts into effect rules and regulations 2:00 AM must not go up height to 5 motor buses
Speed traveling.
Manually detected in this regard, current executive mode is charge station, motor bus is forbidden to let pass, while strengthening section night
Artificial inspection.As can be seen here, existing executive mode is completely dependent on artificial mode and is checked that not only efficiency is low, Er Qieyi
Cause the waste of manpower and materials.
The content of the invention
The present invention for it is above-mentioned it is existing manually perform mode, with reference to scanning type laser rangefinder, utilize multiple echo skill
Art is easy for installation there is provided one kind is simple in construction, and performance is stable, and the degree of accuracy is high, intelligent high and permanent life-span motor bus identification
And grasp shoot method, apparatus and system.
In a first aspect, the present invention provides a kind of motor bus identification and grasp shoot method, including：
Multiple cross-section datas of vehicle to be measured are obtained using scanning type laser rangefinder；
According to the multiple cross-section data, the appearance profile in the vehicle scan face to be measured is obtained；
Using multiple echo detection method, whether vehicle to be measured has side glass described in interpretation；
The characteristic information extraction from the contour of the vehicle profile, by the characteristic information and contour of the vehicle profile information model
Storehouse is matched, and whether has side glass according to the vehicle to be measured, and whether judge the vehicle to be measured is motor bus；
If the vehicle to be measured is motor bus, the vehicle to be measured is captured by camera.
The characteristic information includes：The height of the vehicle to be measured, vehicle commander, overall width, vehicular sideview flatness information and/or
Vehicle roof flatness information.
The contour of the vehicle profile information model library includes：All vehicles pass through scan-type under a variety of different travel speeds
Laser range finder, the contour of the vehicle profile and the corresponding characteristic information of the vehicle of acquisition.
Whether the use multiple echo detection method, vehicle to be measured described in interpretation has side glass, specifically includes：
Obtain the echo information that each pulse laser reflects within effective time from the different objects of same launch angle；
The echo information that all laser beams that a circle is obtained are scanned using rotary scanning type rangefinder is launched according to scanning
Order is arranged, and forms the multiple waveform that a frame carries multiple echo information；
An echo curve in the multiple waveform is chosen, current time contour of the vehicle profile is fitted；
Choose the second trip echo curve in the multiple waveform, judge position that second trip echo curve reflects whether
The effective coverage of car body contoured interior, if effective coverage, then an echo for judging this orientation angle is that glass-reflected is formed
's；
With reference to vehicle by when scanning to vehicle all frame waveforms, identification per in frame once, second trip echo curve, and
Whole vehicular sideview appearance profile sectional view is fitted with the sequencing matching of sweep time, so as to tell vehicular sideview glass
Glass information.
Methods described also includes：The picture for the vehicle to be measured captured according to the camera, extracts the vehicle to be measured
The number-plate number.
Second aspect, the invention provides a kind of motor bus identifying device, the device includes：
Scanning element, multiple cross-section datas for obtaining vehicle to be measured using scanning type laser rangefinder；
Appearance profile acquiring unit, for according to the multiple cross-section data, obtaining the outer of the vehicle scan face to be measured
Shape profile；
Glass detection unit, for using multiple echo detection method, whether vehicle to be measured described in interpretation has side glass；
Vehicle identifying unit, for the characteristic information extraction from the contour of the vehicle profile, by the characteristic information and car
Appearance profile information model storehouse is matched, and whether has side glass according to the vehicle to be measured, judge described in treat measuring car
Whether it is motor bus；
Unit is captured, for when the vehicle to be measured is motor bus, the vehicle to be measured to be captured by camera.
The third aspect, the present invention provides a kind of scanning type laser rangefinder identification motor bus capturing system, it is characterised in that
Including：Scanning type laser device, intelligent candid device and above-mentioned motor bus identifying device；
The scanning type laser device is used for the appearance profile information for obtaining current vehicle, and the motor bus identifying device connects
The appearance profile information of the vehicle is received, by the way that the appearance profile information and contour of the vehicle profile information model library are carried out
Match somebody with somebody, and coordinate multiple echo detection technique, identify motor bus, the intelligent candid device is according to the motor bus identifying device
Instruction capture, obtain motor bus traveling headstock or tailstock image information and the number-plate number.
The scanning type laser device uses separate unit rotary scanning type laser range finder, is fixedly installed in turnpike driving
In vertical rod in the side or isolation strip in section, and the height on range sweep track ground is no less than 6m, its plane of scanning motion and institute
State track direction vertical.
Optionally, the scan frequency and angular resolution of the rotary scanning type laser range finder be respectively 25-100Hz and
0.25-1 degree correspondence is adjustable；
The scanning distance of the rotary scanning type laser range finder is more than 30m under 10% reflectivity, and scanning angle is 0-
180 degree.
The motor bus vehicle recognition unit, by recognizing the side glass of vehicle, to distinguish motor bus and lorry.
The intelligent candid device is fixedly installed in the vertical rod in the side in turnpike driving section or isolation strip, can
Road side is installed along with the scanning type laser device, both sides of the road can be also separately mounted to.
The rotary scanning type laser range finder is connected with the motor bus vehicle recognition unit by network.
The intelligent candid device is connected with the motor bus vehicle recognition unit by signal wire.
Using road surface direction as straight line is referred to, using vehicle heading as positive direction, with the scanning type laser device
Installation site includes as zero point, the relative mounting positions of the intelligent candid device according to the difference of the demand of candid photograph：
When needing to capture headstock, the intelligent candid device is arranged on reference in positive direction, with the scanning type laser
Device is separated by a distance；
When needing to capture the tailstock, the intelligent candid device is arranged on reference in negative direction, with the scanning type laser
Device is separated by a distance.
The present invention has the beneficial effect that：
By the present invention, laser scanning data information is matched with contour of the vehicle profile information model library, while using many
Ripple detection technique is returned, vehicular sideview glass is differentiated with reference to multiframe scanning information, motor bus is recognized accurately and triggers and grabs automatically
Clap, above-mentioned technical proposal of the invention has the following advantages that：The system is stable to be not affected by the weather；It is easily installed maintenance；Greatly
Car recognition accuracy is high；Intelligence degree height uses manpower and material resources sparingly input.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these figures.
Fig. 1 is a kind of schematic flow sheet of motor bus identification and grasp shoot method provided for one embodiment of the invention；
Fig. 2 is the schematic flow sheet for the multiple echo detection method that another embodiment of the present invention is provided；
Fig. 3 provides scanning recognition glass schematic diagram for another embodiment of the present invention；
The structural representation for the motor bus identifying device that Fig. 4 provides for one embodiment of the invention；
A kind of identification of motor bus and the structural representation of capturing system that Fig. 5 provides for one embodiment of the invention；
A kind of identification of motor bus and the structural representation of capturing system that Fig. 6 provides for another embodiment of the present invention；
The motor bus appearance profile hum pattern that Fig. 7 obtains for the scanning that another embodiment of the present invention is provided；
The lorry appearance profile hum pattern that Fig. 8 obtains for the scanning that another embodiment of the present invention is provided；
Wherein, 1 is rotary scanning type laser range finder, and 2 be motor bus identifying device, and 3 be intelligent candid device, and 4 be solid
Determine the vertical rod of scanning type laser device, 5 be the vertical rod of fixed intelligent candid device.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
As shown in figure 1, the present invention one implements to provide a kind of identification of motor bus and grasp shoot method, this method includes following step
Suddenly：
S1：Multiple cross-section datas of vehicle to be measured are obtained using scanning type laser rangefinder.
Wherein, the rotary scanning type laser range finder employed in this step, is to drive semiconductor by driving radiating circuit
Laser diode launches 905nm infrared light, the echo laser being reflected back is received by laser pick-off circuit, according to timing module
Record from the time interval for being transmitted into reception, calculate the reverberation distance of individual pulse laser direction, scanning type laser is surveyed
Speculum in distance meter, drives backspin to turn in the motor at the uniform velocity rotated, makes laser pulse light beam one scanning plane of formation, will scan
The distance of all laser scanning points is arranged by scanning sequency in face, is a frame complete scan data.Such laser range finder is surveyed
Away from accurate, Vehicle Detail can be effectively differentiated, vehicle window is recognized.
S2：According to the multiple cross-section data, the appearance profile in the vehicle scan face to be measured is obtained.
S3：Using multiple echo detection method, whether vehicle to be measured has side glass described in interpretation.
Wherein, the multiple echo technology of use, is to be directed to sound wave or light wave, and some incidence letter is understood in body surface
Number reflect, the incoming signal that another part is not reflected can continue according to physical characteristic to propagate forward in new medium,
The new object until running into, repetition occurs foregoing part reflection, partly continues the phenomenon propagated forward, is circulated with this, then
In effective time after a pulse signal transmitting, receiving terminal can receive the signal that different objects are reflected, and obtain multiple
Echo information, the distance of multi-level object is can determine that using the echo information by known method.
S4：The characteristic information extraction from the contour of the vehicle profile, by the characteristic information and contour of the vehicle profile information
Model library is matched, and whether has side glass according to the vehicle to be measured, and whether judge the vehicle to be measured is motor bus.
Wherein, the characteristic information includes：Height, vehicle commander, overall width, the vehicular sideview flatness information of the vehicle to be measured
And/or vehicle roof flatness information.The contour of the vehicle profile information model library includes：All vehicles are in a variety of different travelings
By scanning type laser rangefinder under speed, the contour of the vehicle profile and the corresponding characteristic information of the vehicle of acquisition.
Specifically, this step is first by the characteristic information of vehicle to be measured and default vehicle's contour information database
The characteristic information of various is matched.But be due to that part lorry is identical with the characteristic information of motor bus, then just for
Characteristic information carries out matching and cannot be distinguished by part lorry and motor bus；Because lorry does not have side glass and motor bus has side glass
Glass, then this step further judge the side glass information of vehicle to be measured, if there is side glass, judge the vehicle to be measured as
Motor bus.
S5：If the vehicle to be measured is motor bus, the vehicle to be measured is captured by camera.
Further, this method also includes：
The picture for the vehicle to be measured captured according to the camera, extracts the number-plate number of the vehicle to be measured.
As shown in Fig. 2 step S3 detects the method for differentiating vehicular sideview glass using multiple echo, following step is specifically included
Suddenly：
S31：Obtain the echo that each pulse laser reflects within effective time from the different objects of same launch angle
Information；
Specifically, as shown in figure 3, after a pulse laser emission goes out in scanning plane, the shape on motor bus side glass
Into a pip a, a part of laser signal reflects echo information of acquisition, and another part laser signal passes through glass
Continuation is propagated forward, and when running into in-car object formation pip b, now most signal is reflected back acquisition second trip echo
Signal；
S32：The echo information for all laser beams that a circle is obtained will be scanned using rotary scanning type rangefinder according to scanning
Shooting sequence is arranged, and forms the multiple waveform that a frame carries multiple echo information；
Specifically, the circle of scanning one is 360 degree of rotation sweep.And then by the echo information of all laser pulses of a frame in
According to scanning shooting sequence arrangement, the complete oscillogram for possessing an echo curve and secondary clawback curve is formed.
S33：An echo curve in multiple waveform is chosen, current time contour of the vehicle profile is fitted；
S34：Choose the second trip echo curve in multiple waveform, judge position that second trip echo curve reflects whether
The effective coverage of car body contoured interior, if effective coverage, then an echo for judging this orientation angle is that glass-reflected is formed；
Specifically, for the pulse laser that some launches at a certain angle, partial pulse laser is formed through glass-reflected
Echo curve, and another part reflects to form second trip echo curve through glass through object in vehicle body, then secondary returning curve
A line echo curve corresponding with the second trip echo curve belongs to the pulse laser formation of same angular emission, if secondary returning
Wave profile is in interior of body, that is, the effective coverage belonged in car body profile, then an above-mentioned echo curve is through glass-reflected shape
Into.
S35：With reference to vehicle by when scanning to vehicle all frame waveforms, identification per in frame once, secondary returning curve
Line, is recognized in the manner described above, and fits whole vehicular sideview appearance profile section with the sequencing matching of sweep time
Figure, so as to tell vehicular sideview glass information.
Specifically, due to being likely to occur mistake, then only according to a frame in pulse laser emission formation multiple waveform without
Method accurately confirms glass information, then needs to obtain all frames of scanning vehicle, to the echo curve and second trip echo of every frame
Curve sorts in the way of in step S32, forms the multiple waveform fitting of multiframe, and fits car by sweep time sequencing
The appearance profile information of side, and then differentiate vehicular sideview and whether there is glass.
A kind of motor bus recognition methods is present embodiments provided, measuring car is treated using the scanning of rotary scanning type laser range finder
, and multiple echo technology is combined, the type for treating measuring car is effectively and accurately recognized, the system architecture is simple, install
Convenient, performance is stable, the degree of accuracy is high, the intelligent high and life-span is permanent.
As shown in figure 4, another embodiment of the present invention provides a kind of structural representation of motor bus identifying device, the device
Including：Scanning element 401, appearance profile acquiring unit 402, glass detection unit 403, vehicle identifying unit 404 and candid photograph are single
Member 405；Wherein：
Scanning element, multiple cross-section datas for obtaining vehicle to be measured using scanning type laser rangefinder；
Appearance profile acquiring unit, for according to the multiple cross-section data, obtaining the outer of the vehicle scan face to be measured
Shape profile；
Glass detection unit, for using multiple echo detection method, whether vehicle to be measured described in interpretation has side glass；
Vehicle identifying unit, for the characteristic information extraction from the contour of the vehicle profile, by the characteristic information and car
Appearance profile information model storehouse is matched, and whether has side glass according to the vehicle to be measured, judge described in treat measuring car
Whether it is motor bus；
Unit is captured, for when the vehicle to be measured is motor bus, the vehicle to be measured to be captured by camera.
It is as shown in Figure 5 and Figure 6 a kind of scanning type laser rangefinder identification motor bus shown in another embodiment of the present invention
Capturing system, the system includes：Scanning type laser device 1, motor bus identifying device 2, intelligent candid device 3, scanning constant formula
The vertical rod 4 of laser aid, the vertical rod 5 of fixed intelligent candid device.
The scanning type laser device is used for the appearance profile information for obtaining current vehicle, and the motor bus identifying device connects
The appearance profile information of the vehicle is received, by the way that the appearance profile information and contour of the vehicle profile information model library are carried out
Match somebody with somebody, and coordinate multiple echo detection technique, identify motor bus, the intelligent candid device is according to the motor bus identifying device
Instruction capture, obtain motor bus traveling headstock or tailstock image information and the number-plate number.
The rotary scanning type laser range finder is fixedly mounted in the vertical rod 4, and the height on range sweep track ground
Degree is no less than 6m, and the plane of scanning motion of the rotary scanning type laser range finder is vertical with the track direction.The intelligent candid
Device is fixedly mounted in the vertical rod 5, and vertical rod 4 and vertical rod 5 are at a distance.The motor bus vehicle recognition unit
It is connected with the rotary scanning type laser range finder by netting twine, is connected with the intelligent candid device by signal wire.
The rotary scanning type laser range finder uses wavelength for 905 nanometers of infrared light, scan frequency and angle-resolved
Rate is respectively that 25-100Hz with 0.25-1 degree is corresponding adjustable, and effective scanning distance is more than 30m, scanning angle under 10% reflectivity
For 0-180 degree.
Using road surface direction as straight line is referred to, using vehicle heading as positive direction, with the scanning type laser device
Installation site includes as zero point, the relative mounting positions of the intelligent candid device according to the difference of the demand of candid photograph：
1) when needing to capture headstock, the intelligent candid device is arranged on reference in positive direction, is swashed with the scan-type
Electro-optical device is separated by a distance；
2) when needing to capture the tailstock, the intelligent candid device is arranged on reference in negative direction, is swashed with the scan-type
Electro-optical device is separated by a distance.
The specific implementation process of the present embodiment is：In the plane of scanning motion of rotary scanning type laser range finder, work as motor bus
When driving into, Spline smoothing, motor bus identification can occur for the partial dot on the wavy curve of rotary scanning type laser range finder collection
The point of these generation steps is extracted and preserved as characteristic point by device；Motor bus is crossing sweeping for rotary scanning type laser range finder
During retouching plane, laser gathers multiframe wavy curve with its intrinsic scan frequency, is put down until motor bus rolls scanning away from
Face, each of which frame waveform is all the complete oscillogram for possessing an echo curve and secondary clawback curve.Motor bus is recognized
Device is matched the characteristic point of each echo curve of frame waveform during this, extracts effective characteristic point, and intend
The appearance profile information sectional view including vehicle roof and vehicle side of synthesis as shown in Figure 7 and Figure 8；Then using height
Degree, vehicle commander, overall width, vehicular sideview flatness information and/or vehicle roof flatness information, by outside section of outline information and vehicle
Shape profile information model library is matched, and identifies motor bus.
Wherein, in described sectional view and contour of the vehicle profile information model library matching process, according to appearance profile information
With the second trip echo calibration curve information in all frames, vehicular sideview glass is told, as shown in Figure 5 includes at the top of lorry and lorry
The appearance profile information sectional view of side, side glass is contrasted with Fig. 4, distinguishes motor bus and similar vehicle.
The motor bus identifying device judges current slot after motor bus is identified, if night 2:00 AM is to 5
The period of point, then send semaphore and trigger traveling image and the number-plate number that the intelligent candid device captures motor bus headstock
(according to Fig. 6 erection sequence, then capturing the traveling image and the number-plate number of the motor bus tailstock), then by being wirelessly transferred dress
Put and send motor bus image and car plate data to data center.
The present embodiment recognizes motor bus using separate unit rotary scanning type laser range finder, and simple installation is obtained for scanning
Waveform, only need to be fitted to after contour of the vehicle section of outline figure, matched with the contour of the vehicle profile information model library set up, and
Coordinate multiple echo detection technique, by recognizing side glass, distinguished to similar lorry, to recognize motor bus and capture.In addition,
Using laser range finder, range error is small, can effectively recognize glass；For high-frequency rotating laser, in certain scanning distance scope
Interior, the distance between adjacent scanning element is very small, and the precision that this allows for contour of the vehicle section of outline is very high.
Embodiment of above is only suitable to the explanation disclosure, and limitation not of this disclosure, about the common of technical field
Technical staff, in the case where not departing from spirit and scope of the present disclosure, can also make a variety of changes and modification, therefore all
Equivalent technical scheme falls within the category of the disclosure, and the scope of patent protection of the disclosure should be defined by the claims.
Claims (9)
1. a kind of motor bus identification and grasp shoot method, it is characterised in that including：
Multiple cross-section datas of vehicle to be measured are obtained using scanning type laser rangefinder；
According to the multiple cross-section data, the appearance profile in the vehicle scan face to be measured is obtained；
Using multiple echo detection method, whether vehicle to be measured has side glass described in interpretation；
The characteristic information extraction from the contour of the vehicle profile, the characteristic information is entered with contour of the vehicle profile information model library
Row matching, and whether side glass is had according to the vehicle to be measured, whether judge the vehicle to be measured is motor bus；
If the vehicle to be measured is motor bus, the vehicle to be measured is captured by camera.
2. according to the method described in claim 1, it is characterised in that the characteristic information includes：The height of the vehicle to be measured,
Vehicle commander, overall width, vehicular sideview flatness information and/or vehicle roof flatness information.
3. according to the method described in claim 1, it is characterised in that the contour of the vehicle profile information model library includes：It is all
Vehicle passes through scanning type laser rangefinder, the contour of the vehicle profile of acquisition and vehicle correspondence under a variety of different travel speeds
Characteristic information.
4. according to the method described in claim 1, it is characterised in that the use multiple echo detection method, treated described in interpretation
Whether measuring car has side glass, specifically includes：
Obtain the echo information that each pulse laser reflects within effective time from the different objects of same launch angle；
The echo information for all laser beams that a circle is obtained will be scanned using rotary scanning type rangefinder according to scanning shooting sequence
Arrangement, forms the multiple waveform that a frame carries multiple echo information；
An echo curve in the multiple waveform is chosen, current time contour of the vehicle profile is fitted；
The second trip echo curve in the multiple waveform is chosen, judges position that second trip echo curve reflects whether in car body
The effective coverage of contoured interior, if effective coverage, then an echo for judging this orientation angle is glass-reflected formation；
With reference to vehicle by when scanning to vehicle all frame waveforms, identification per in frame once, second trip echo curve, and to sweep
The sequencing matching for retouching the time fits whole vehicular sideview appearance profile sectional view, so as to tell vehicular sideview glass letter
Breath.
5. according to the method described in claim 1, it is characterised in that methods described also includes：
The picture for the vehicle to be measured captured according to the camera, extracts the number-plate number of the vehicle to be measured.
6. a kind of motor bus identifying device, it is characterised in that the device includes：
Scanning element, multiple cross-section datas for obtaining vehicle to be measured using scanning type laser rangefinder；
Appearance profile acquiring unit, for according to the multiple cross-section data, obtaining the profile wheel in the vehicle scan face to be measured
It is wide；
Glass detection unit, for using multiple echo detection method, whether vehicle to be measured described in interpretation has side glass；
Vehicle identifying unit, for the characteristic information extraction from the contour of the vehicle profile, by outside the characteristic information and vehicle
Shape profile information model library is matched, and whether has side glass according to the vehicle to be measured, judges that the vehicle to be measured is
No is motor bus；
Unit is captured, for when the vehicle to be measured is motor bus, the vehicle to be measured to be captured by camera.
7. a kind of scanning type laser rangefinder recognizes motor bus capturing system, it is characterised in that including：Scanning type laser device,
Motor bus identifying device described in intelligent candid device and claim 6；
The scanning type laser device is used for the appearance profile information for obtaining current vehicle, and the motor bus identifying device receives institute
The appearance profile information of vehicle is stated, by the way that the appearance profile information is matched with contour of the vehicle profile information model library,
And coordinate multiple echo detection technique, motor bus is identified, the intelligent candid device is according to the motor bus identifying device
Instruction is captured, and obtains the headstock or tailstock image information and the number-plate number of motor bus traveling.
8. system as claimed in claim 7, it is characterised in that the scanning type laser device is swashed using separate unit rotary scanning type
Optar, is fixedly installed in the vertical rod in the side in turnpike driving section or isolation strip, its plane of scanning motion and scanning
Track direction is vertical.
9. system as claimed in claim 7, it is characterised in that the intelligent candid device is fixedly installed in turnpike driving
In vertical rod in the side or isolation strip in section, road side can be installed along with the scanning type laser device, can also divided
Not An Zhuan both sides of the road, using road surface direction as straight line is referred to, using vehicle heading as positive direction, with the scan-type
Laser aid installation site is wrapped as zero point, the relative mounting positions of the intelligent candid device according to the different of the demand of candid photograph
Include：
When needing to capture headstock, the intelligent candid device is arranged on reference in positive direction, with the scanning type laser device
It is separated by a distance；
When needing to capture the tailstock, the intelligent candid device is arranged on reference in negative direction, with the scanning type laser device
It is separated by a distance.
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| CN104064030A (en) * | 2014-07-01 | 2014-09-24 | 武汉万集信息技术有限公司 | Vehicle type identification method and vehicle type identification system |
| CN104361751A (en) * | 2014-10-27 | 2015-02-18 | 北京握奇智能科技有限公司 | Laser scanning based vehicle type recognition system for free flow charging |
| CN204406670U (en) * | 2015-01-30 | 2015-06-17 | 武汉万集信息技术有限公司 | A kind of vehicle length, width and height pick-up unit |
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2015
- 2015-06-19 CN CN201510347158.0A patent/CN105046968B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5554984A (en) * | 1993-02-19 | 1996-09-10 | Mitsubishi Jukogyo Kabushiki Kaisha | Electronic traffic tariff reception system and vehicle identification apparatus |
| CN103279996A (en) * | 2013-05-06 | 2013-09-04 | 华南理工大学 | Vehicle information detecting and recognizing system under multilane condition |
| CN104064030A (en) * | 2014-07-01 | 2014-09-24 | 武汉万集信息技术有限公司 | Vehicle type identification method and vehicle type identification system |
| CN104361751A (en) * | 2014-10-27 | 2015-02-18 | 北京握奇智能科技有限公司 | Laser scanning based vehicle type recognition system for free flow charging |
| CN204406670U (en) * | 2015-01-30 | 2015-06-17 | 武汉万集信息技术有限公司 | A kind of vehicle length, width and height pick-up unit |
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