CN107576266A - Method based on the fast automatic generation road surface of a cloud height projection and vehicle scene key element - Google Patents
Method based on the fast automatic generation road surface of a cloud height projection and vehicle scene key element Download PDFInfo
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- CN107576266A CN107576266A CN201710683745.6A CN201710683745A CN107576266A CN 107576266 A CN107576266 A CN 107576266A CN 201710683745 A CN201710683745 A CN 201710683745A CN 107576266 A CN107576266 A CN 107576266A
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Abstract
The invention discloses a kind of method based on the fast automatic generation road surface of a cloud height projection and vehicle scene key element, shooting, collecting is carried out to the scene of the accident by the filming apparatus with data-transformation facility, and transfer data to server, plan Auto of the server based on cloud data, the automatic profile for drawing out object in plan, the relative position relation between objective fixed object.Manual measurement scaling and upper figure are not needed using technical solution of the present invention, significantly shortens and draws the time, realize the automation and intellectuality of scene of the accident processing, improve operating efficiency.
Description
Technical field
The present invention relates to three-dimensional point cloud analytical technology application field, more particularly to one kind are quick certainly based on point cloud height projection
Dynamic generation road surface and the method for vehicle scene key element.
Background technology
Domestic and international most of traffic-police draws plan in scene of a traffic accident exploration using calculating auxiliary CAD.It is existing
Some Computer Aided Drawing traffic accident situ map workflows：Traffic police is measured existing using tape measure and laser range finder
, software is aided in using computer graphics such as AutoCad, by putting the traffic accident scene diagram shape sign mould such as vehicle, root
Scene photo is drawn according to ratio.The ranging work of the method is by manually, and measurement workload is big, and measurement accuracy is horizontal by operating personnel
Influence, simultaneous graphic system quality is horizontal uneven because drawing personnel's.Second, all measurements, Plot Work must be in road traffics
The scene of the accident is completed, and can not be drawn after the revocation of scene.And traffic accident situ is done due to extraneous factors such as artificial, weather
Disturb, the scene of the accident is easy to be destroyed and disturbed in a short time, it is impossible to retains for a long time as criminal case crime scene.
Once being destroyed, irrecoverable, measurement data can not be retrieved or investigated if any omission, mistake.
Domestic and international most of traffic-police is remembered in scene of a traffic accident exploration using 360 degree of outdoor scenes of streetscape map type
Record figure.After looking around shooting to existing scene progress multi-angle with digital camera, 360 ° of panoramas can be generated by post-processing
Figure.The figure can be achieved with certain point as the center of circle, and original place rotates 360 ° around observation scene, and identifies the key elements such as scene of the accident vehicle.
The defects of technology is present：First, according to GA 49-2014《Traffic accident situ map is drawn》Regulation, 360 ° of outdoor scene records
Figure is unable to alternative plan views.Second, orthophotoquad derived from outdoor scene record figure can not also replace the legal effect of plan.Three
It is the double measurement carried out using outdoor scene record figure, error is too big, has exceeded the 5% of national regulation, has often reached 10%.
Sum it up, most of traffic-police still largely uses handwork side in scene of a traffic accident exploration both at home and abroad
The tradition such as formula, manual work mode mainly judges scene of a traffic accident measurement by human eye, hand is touched, tape measure amount, Hand drawing
Method, the defects of this method is primarily present the following aspects：
1）In terms of measurement data, test leakage, wrong survey, leakage picture, wrong phenomena such as drawing, happen occasionally；
2）Various limitations in measurement process, traffic accident occur all to survey to scene at sleet, thick fog weather and night etc.
Examine and bring very big difficulty, traffic accident is handled on highway, sky way and bridge higher requirement, it is desirable to most
The most scene of the accident information of collection in the short time, while it is unimpeded to be resumed traffic with most fast speed；
3）In terms of the processing of measurement data and live reconstruct, second extraction can not be carried out to scene of the accident information, measurement terminates
Afterwards, scene is removed, if it is incomplete to collect evidence, or when being conflicted between data, then can not be carried out secondary evidence obtaining, be made accident
Processing gets into a difficult position；
4）In terms of traffic accident scene diagram is drawn, occur many software for drawing in recent years, but because measurement still needs
Manual mode is carried out, and automaticity is not high, and very big spirit and physical load are brought to on-site law-enforcing policeman；
5）Scene of the accident data storage, file and retrieval in terms of, this method is extremely inconvenient, for great, difficult traffic accident
Shortage system, complete, visualization foundation are handled, the new ideas such as scene of the accident visualization recovery and digital stereoscopic rendering are just more difficult to
To realize.
With the development of science and technology the equipment that current traffic police also uses digital camera in the processing scene of a traffic accident is entered to act
Therefore the shooting at scene, but still be confined to carry out simple qualitative analysis to scene of the accident photo.
The content of the invention
In view of the shortcomings of the prior art, present invention solves the technical problem that how being solved in processing scene of a traffic accident work
In work, measurement workload is big, traffic accident scene diagram shape sign mould is put and asked by artificial, double measurement precision are inaccurate
Topic.
In order to solve the above technical problems, the technical solution adopted by the present invention is a kind of fast automatic based on point cloud height projection
The method for generating road surface and vehicle scene key element, is shot by the filming apparatus with data-transformation facility to the scene of the accident
Collection, and server is transferred data to, plan Auto of the server based on cloud data, draw out automatically flat
The profile of object in the figure of face, the relative position relation between objective fixed object, comprises the following steps：
（1）Operating personnel reach traffic accident situ；
（2）Mark is placed in traffic accident situ, as datum mark, hand-held filming apparatus shows around road traffic accident
The circle of field one is shot；
（3）Shooting is finished, and photographed data is changed into the band normal cloud data of TXT forms and to intercept necessarily in filming apparatus
In the range of cloud data mode delimit traffic accident situ scope, then cloud data is sent to by wireless network
Server；
（4）Server reads the band normal cloud data of TXT forms, and information is stored in road traffic accident drafting system after reading
In；The marker feature included in identification cloud data, on the basis of marker feature is identified, according to putting for mark
Position, ground is identified, generate object identifies for the projection on ground, synthesis on ground ground and space others thing
Body three-dimensional information, the profile of object is calculated according to the height of object on the position ground of ground and projected on ground, formed existing
Field plan simultaneously preserves in the server；
（5）By mobile terminal, the download package from server contains road surface and the scene of the accident of vehicle scene key element and put down operating personnel
Face figure.
The height of the mark is 30-50 centimetres.
In step（2）In, described enclosed around traffic accident situ one shot in shooting process photo no less than 10
.
The server can with data storage and ratio chart subsequent query and to have access to, and by comprising various accidents show
Field data is directly used in accident reconstruction analysis.
The filming apparatus is mobile phone, camera, video camera or laser measuring apparatus.
The cloud data is the point cloud information comprising color, position, normal and mark.
It is using the beneficial effect of technical solution of the present invention：
1st, without manually drawing the profile of object on ground, the relative position relation between objective fixed object, it is not necessary to artificial
Scaling and upper figure are measured, significantly shortens and draws the time；
2nd, the image that can be provided in time according to server correctly provides handling suggestion, moreover it is possible to which the data as scene are stored in clothes
It is engaged in device；
3rd, the precision of drawing is improved, reduces difference of illustrator's level to drawing quality；
4th, the automation and intellectuality of scene of the accident processing are realized, improves operating efficiency.
Brief description of the drawings
Fig. 1 is the flow chart of the present invention；
Fig. 2 is the cloud data form TXT sectional drawings of the present invention；
Fig. 3 is the Marker Identity schematic diagram of the present invention；
Fig. 4 is the identification ground schematic diagram of the present invention；
Fig. 5 is the object of the present invention for the perspective view on ground.
Embodiment
The embodiment of the present invention is further described with reference to the accompanying drawings and examples, but is not to this hair
Bright restriction.
Fig. 1 shows the flow chart of the present invention, and one kind is showed based on the fast automatic generation road surface of point cloud height projection and vehicle
The method of field key element, shooting, collecting is carried out to the scene of the accident by the filming apparatus with data-transformation facility, and data are passed
It is defeated to arrive server, plan Auto of the server based on cloud data, the wheel of object in plan is drawn out automatically
Exterior feature, the relative position relation between objective fixed object, comprises the following steps：
（1）Operating personnel reach traffic accident situ；
（2）Mark is placed in traffic accident situ, as datum mark, hand-held filming apparatus shows around road traffic accident
The circle of field one is shot；
（3）Shooting is finished, and photographed data is changed into the band normal cloud data of TXT forms and to intercept necessarily in filming apparatus
In the range of cloud data mode delimit traffic accident situ scope, then cloud data is sent to by wireless network
Server；
（4）Server reads the band normal cloud data of TXT forms, and information is stored in road traffic accident drafting system after reading
In；The marker feature included in identification cloud data, on the basis of marker feature is identified, according to putting for mark
Position, ground is identified, generate object identifies for the projection on ground, synthesis on ground ground and space others thing
Body three-dimensional information, the profile of object is calculated according to the height of object on the position ground of ground and projected on ground, formed existing
Field plan simultaneously preserves in the server；
（5）By mobile terminal, the download package from server contains road surface and the scene of the accident of vehicle scene key element and put down operating personnel
Face figure.
The height of the mark is 30-50 centimetres.
The server can with data storage and ratio chart subsequent query and to have access to, and by comprising various accidents show
Field data is directly used in accident reconstruction analysis.
The step（2）Enclosed around traffic accident situ one and shot in shooting process photo no less than 10.
The filming apparatus is mobile phone, camera, video camera or laser measuring apparatus.
The cloud data is the point cloud information comprising color, position, normal and mark.
Fig. 2 shows the cloud data form TXT sectional drawings of the present invention；
Fig. 3 shows the Marker Identity schematic diagram of the present invention；
Fig. 4 shows the identification ground schematic diagram of the present invention；
Fig. 5 shows the object of the present invention for the perspective view on ground.
It is using the beneficial effect of technical solution of the present invention：
1st, without manually drawing the profile of object on ground, the relative position relation between objective fixed object, it is not necessary to artificial
Scaling and upper figure are measured, significantly shortens and draws the time；
2nd, the image that can be provided in time according to server correctly provides handling suggestion, moreover it is possible to which the data as scene are stored in clothes
It is engaged in device；
3rd, the precision of drawing is improved, reduces difference of illustrator's level to drawing quality；
4th, the automation and intellectuality of scene of the accident processing are realized, improves operating efficiency.
Embodiments of the present invention are made that with detailed description above in association with accompanying drawing, but the present invention be not limited to it is described
Embodiment.To those skilled in the art, without departing from the principles and spirit of the present invention, these are implemented
Mode carries out various change, modification, replacement and modification and still fallen within protection scope of the present invention.
Claims (6)
- A kind of 1. method based on the fast automatic generation road surface of a cloud height projection and vehicle scene key element, it is characterised in that：It is logical Cross the filming apparatus with data-transformation facility and shooting, collecting is carried out to the scene of the accident, and transfer data to server, service Plan Auto of the device based on cloud data, the profile of object in plan, objective fixed object are drawn out automatically Between relative position relation, comprise the following steps：（1）Operating personnel reach traffic accident situ；（2）Mark is placed in traffic accident situ, as datum mark, hand-held filming apparatus shows around road traffic accident The circle of field one is shot；（3）Shooting is finished, and photographed data is changed into the band normal cloud data of TXT forms and to intercept necessarily in filming apparatus In the range of cloud data mode delimit traffic accident situ scope, then cloud data is sent to by wireless network Server；（4）Server reads the band normal cloud data of TXT forms, and information is stored in road traffic accident drafting system after reading In；The marker feature included in identification cloud data, on the basis of marker feature is identified, according to putting for mark Position, ground is identified, generate object identifies for the projection on ground, synthesis on ground ground and space others thing Body three-dimensional information, the profile of object is calculated according to the height of object on the position ground of ground and projected on ground, formed existing Field plan simultaneously preserves in the server；（5）By mobile terminal, the download package from server contains road surface and the scene of the accident of vehicle scene key element and put down operating personnel Face figure.
- 2. the side according to claim 1 based on the fast automatic generation road surface of a cloud height projection and vehicle scene key element Method, it is characterised in that：In step（2）In, the height of the mark is 30-50 centimetres.
- 3. the side according to claim 1 based on the fast automatic generation road surface of a cloud height projection and vehicle scene key element Method, it is characterised in that：In step（2）In, described enclosed around traffic accident situ one carries out shooting photo not in shooting process Less than 10.
- 4. the side according to claim 1 based on the fast automatic generation road surface of a cloud height projection and vehicle scene key element Method, it is characterised in that：The server can with data storage and ratio chart subsequent query and to have access to, and by comprising it is various Scene of the accident data are directly used in accident reconstruction analysis.
- 5. the side according to claim 1 based on the fast automatic generation road surface of a cloud height projection and vehicle scene key element Method, it is characterised in that：The filming apparatus is mobile phone, camera, video camera or laser measuring apparatus.
- 6. the side according to claim 1 based on the fast automatic generation road surface of a cloud height projection and vehicle scene key element Method, it is characterised in that：The cloud data is the point cloud information comprising color, position, normal and mark.
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| CN201710683745.6A CN107576266B (en) | 2017-08-11 | 2017-08-11 | Method for rapidly and automatically generating road surface and vehicle site elements based on point cloud height projection |
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| CN201710683745.6A CN107576266B (en) | 2017-08-11 | 2017-08-11 | Method for rapidly and automatically generating road surface and vehicle site elements based on point cloud height projection |
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| CN107576266B CN107576266B (en) | 2020-05-12 |
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