CN105335729A - Method and system for identifying road visibility based on automobile data recorder - Google Patents
Method and system for identifying road visibility based on automobile data recorder Download PDFInfo
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- CN105335729A CN105335729A CN201510782350.2A CN201510782350A CN105335729A CN 105335729 A CN105335729 A CN 105335729A CN 201510782350 A CN201510782350 A CN 201510782350A CN 105335729 A CN105335729 A CN 105335729A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V20/00—Scenes; Scene-specific elements
- G06V20/50—Context or environment of the image
- G06V20/56—Context or environment of the image exterior to a vehicle by using sensors mounted on the vehicle
- G06V20/588—Recognition of the road, e.g. of lane markings; Recognition of the vehicle driving pattern in relation to the road
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Abstract
The invention discloses a method and a system for identifying road visibility based on an automobile data recorder, belonging to the field of automobile safety technology. According to the invention, the method comprises the following steps: when an automobile runs on the road, identifying a reference object as a preset target reference object by the automobile data recorder, acquiring the time for judging the reference object as a target reference object and the time that the target reference object disappears, and acquiring the automobile average running speed of the target reference object in the time on the automobile data recorder, thus calculating the visual range of the current automobile running road. The system enables the automobile data recorder to increase a new function of identifying road condition visibility, thus improving the function and application of the automobile data recorder, improving the warning and judgment capability of a driver on road running safety, and being greatly convenient for an automobile driver.
Description
Technical field
The present invention relates to technical field of vehicle safety, in particular a kind of method and system based on running recording instrument of automobile identification road visibility.
Background technology
Along with the raising of people's living standard, the demand of automobile constantly increases, and existing automobile pollution constantly increases, and the demand of driver to advanced security DAS (Driver Assistant System) improves day by day thus.Drive recorder travels the instrument of image in way and the relevent information such as sound as registration of vehicle, producing evidence for traffic hazard, to monitor as driving etc. in technology apply comparatively perfect.
At present in trap for automobile driving safety field, by various technological means, the road conditions of vehicle front in driving process are identified, early warning with share, it is following development trend, but in current adopted technology, can't accurately He timely the visibility of vehicle front road conditions (visibility) state be identified.Such as, in high speed traveling process, travel the visibility conditions in front can change at any time, such as mountain road, through the road behind mountain tunnel, the visibility data therefore only issued by expressway access place can not assist driver to the judgement of road conditions safe driving well.Therefore, how making driver in the road conditions travelled, can get visibility information quickly and easily at any time, can carry out early warning and share further, for other driver provides with reference to warning, be a urgent problem.
Therefore, prior art has yet to be improved and developed.
Summary of the invention
The technical problem to be solved in the present invention is, for the above-mentioned deficiency of prior art, a kind of method and system based on running recording instrument of automobile identification road visibility are provided, object is to solve because visibility data publication in transport information is not enough, to make in vehicle traveling process driver not by obtaining road visibility information at any time in order to carry out the problem effectively judged to road driving safe condition.Present invention achieves the method for the drive recorder identification road visibility by automobile is installed, even if the drive recorder of automobile adds function: the visibility identifying travel.By on drive recorder according to identification target with reference to the time of object and the travel speed of automobile, calculate the visibility in running car road conditions, further increase the function application of drive recorder, improve driver to the early warning of automobile place road traffic safety and judgement, greatly facilitate driver.
The technical scheme that technical solution problem of the present invention adopts is as follows:
Based on a method for running recording instrument of automobile identification road visibility, wherein, comprise step:
A, when running car is on road, and with reference to object appear within the scope of running recording instrument of automobile camera view time, running recording instrument of automobile acquires object of reference volume image and judges whether the current object of reference volume image acquired successfully is identified;
B, when described object of reference volume image is successfully identified, judge that the current success of running recording instrument of automobile identifies with reference to object as target with reference to object, and obtain and be currently successfully identified as the time of target with reference to object, saved as the first recognition time;
C, when described target disappears with reference to object within the scope of running recording instrument of automobile camera view, obtain the time that current described target disappears with reference to object, and saved as the second recognition time;
D, calculating obtain running car average velocity between the first recognition time, the second recognition time in the time period;
E, according to described first recognition time, the second recognition time and automotive average speed, calculate the visual range of current running car road.
The described method based on running recording instrument of automobile identification road visibility, wherein, also comprises in described steps A:
A1, when the described current object of reference volume image acquired successfully is not identified, running recording instrument of automobile continues to obtain other object of reference volume image within the scope of camera view, and continues to judge whether the object of reference volume image acquired successfully is identified.
The described method based on running recording instrument of automobile identification road visibility, wherein, described step D specifically comprises:
D1, the travel speed V1, the V2 that acquire the automobile obtained in each predetermined interval in the time period between the first recognition time, the second recognition time, V3, V4 ..., Vn, and calculate, the running car average velocity V acquired within the described time period:
V=(V1+V2+V3+V4+...+Vn)/n。
The described method based on running recording instrument of automobile identification road visibility, wherein, the object of reference described in described steps A is light pole, constant mark or white marking lines; Predetermined interval described in described step D1 is 0.3 second.
The described method based on running recording instrument of automobile identification road visibility, wherein, in described step e, the computing formula of described visual range is:
Visual range=(the second recognition time-the first recognition time) * running car average velocity.
Based on a system for running recording instrument of automobile identification road visibility, wherein, comprising:
Obtain and identification module with reference to object, for working as running car at road, and when appearing within the scope of running recording instrument of automobile camera view with reference to object, running recording instrument of automobile acquires object of reference volume image and judges whether the current object of reference volume image acquired successfully is identified;
First recognition time acquisition module, for successfully being identified when described object of reference volume image, judge that the current success of running recording instrument of automobile identifies with reference to object as target with reference to object, and obtain and be currently successfully identified as the time of target with reference to object, saved as the first recognition time;
Second recognition time acquisition module, for when described target disappears with reference to object within the scope of running recording instrument of automobile camera view, obtains the time that current described target disappears with reference to object, and is saved as the second recognition time;
Running car average velocity calculate and acquisition module, for calculating and obtaining the running car average velocity between the first recognition time, the second recognition time in the time period;
Visual range computing module, for according to described first recognition time, the second recognition time and automotive average speed, calculates the visual range of current running car road.
Further, described acquisition with reference to object also comprises with identification module:
Continue to obtain and recognition unit with reference to object, for when the described current object of reference volume image acquired successfully is not identified, running recording instrument of automobile continues to obtain other object of reference volume image within the scope of camera view, and continues to judge whether the object of reference volume image acquired successfully is identified.
The described system based on running recording instrument of automobile identification road visibility, wherein, described running car average velocity calculates and specifically comprises with acquisition module:
Travel speed acquiring unit, for acquiring travel speed V1, the V2 of the automobile obtained in each predetermined interval in the time period between the first recognition time, the second recognition time, V3, V4 ..., Vn;
Running car average velocity computing unit, for calculating, acquiring the running car average velocity V within the described time period:
V=(V1+V2+V3+V4+...+Vn)/n。
The described system based on running recording instrument of automobile identification road visibility, wherein, described is light pole, constant mark or white marking lines with reference to object; Described predetermined interval is 0.3 second.
The described system based on running recording instrument of automobile identification road visibility, wherein, in described visual range computing module, the computing formula of described visual range is:
Visual range=(the second recognition time-the first recognition time) * running car average velocity.
Method and system based on running recording instrument of automobile identification road visibility provided by the present invention, make running recording instrument of automobile add New function: to have the function that can identify road conditions visibility.By identifying that on drive recorder target is with reference to the time of object and the travel speed of automobile, calculate the visibility in running car road conditions, further increase the function application of drive recorder, improve driver to the early warning of automobile place road traffic safety and judgement, further, the road conditions visibility data acquired can be shared, greatly facilitate the understanding of other driver to traffic information, improve early warning degree and the degree of safety of running car.
Accompanying drawing explanation
Fig. 1 is the process flow diagram of the method preferred embodiment that the present invention is based on running recording instrument of automobile identification road visibility.
Fig. 2 is the functional schematic block diagram of the system preferred embodiment that the present invention is based on running recording instrument of automobile identification road visibility.
Embodiment
For making object of the present invention, technical scheme and advantage clearly, clearly, developing simultaneously referring to accompanying drawing, the present invention is described in more detail for embodiment.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Refer to Fig. 1, Fig. 1 is the process flow diagram of the method preferred embodiment that the present invention is based on running recording instrument of automobile identification road visibility.As described in Figure 1, the described method based on running recording instrument of automobile identification road visibility, comprises the following steps:
Step S110, when running car is on road, and when appearing within the scope of running recording instrument of automobile camera view with reference to object, running recording instrument of automobile acquires object of reference volume image and judges whether the current object of reference volume image acquired successfully is identified;
When the present invention specifically implements, described reference object includes but not limited to light pole, constant mark or white marking lines etc., when running car is on road, and when this reference object of institute appears within the scope of running recording instrument of automobile camera view, running recording instrument of automobile acquires object of reference volume image and judges whether the current object of reference volume image acquired successfully is identified; Such as, when running car is on road, the a certain light pole in roadside enters within the scope of the camera view of running recording instrument of automobile, can be identified by the object of reference volume image taken camera, because automobile driving speed is very fast, therefore, namely the profile that can clearly be identified with reference to object by drive recorder can be determined successfully to be identified with reference to object.
And, further, when the described current object of reference volume image acquired successfully is not identified, running recording instrument of automobile continues to obtain other object of reference volume image within the scope of camera view, and continue to judge whether the object of reference volume image acquired successfully is identified, if namely enter light pole within the scope of camera view due to other barrier or due to the speed of a motor vehicle too fast, cause light pole can not be identified successfully, then drive recorder can continue other object of reference volume image in acquisition camera angular field of view and identify, successfully identified until have with reference to object.
Step S120, when described object of reference volume image is successfully identified, judge that the current success of running recording instrument of automobile identifies with reference to object as target with reference to object, and obtain and be currently successfully identified as the time of target with reference to object, saved as the first recognition time;
In the present invention specifically implements: when drive recorder successfully identifies with reference to subject image, as successfully identified lamp lamp stand within sweep of the eye at drive recorder, then determine that the current light pole identified is that target is with reference to object, and obtain the current concrete time successfully identified by light pole simultaneously, saved as the first recognition time T
1.
Step S130, when described target disappears with reference to object within the scope of running recording instrument of automobile camera view, obtain the time that current described target disappears with reference to object, and saved as the second recognition time;
In the present invention specifically implements, such as when the street lamp successfully identified in previous step 120 is from the disappearance within sweep of the eye of running recording instrument of automobile camera, obtain the concrete time that this is disappeared by the light pole successfully identified within the scope of drive recorder camera view, and saved as the second recognition time T
2.
Step S140, calculating obtain running car average velocity between the first recognition time, the second recognition time in the time period;
In the present invention specifically implements, described drive recorder can adopt GPS to obtain the travel speed put sometime of automobile, the travel speed that speed pickup also can be adopted to acquire automobile put sometime; And acquired at the first recognition time T by GPS or speed pickup
1, the second recognition time T
2between time period T
1~ T
2the travel speed V of the automobile obtained in each predetermined interval interior
1, V
2, V
3, V
4..., V
n, and calculate, the running car average velocity V acquired within the described time period, in the embodiment of the present invention, described predetermined interval is 0.3 second, namely at time period time period T
1~ T
2the interior travel speed obtaining an automobile every 0.3 second, when automobile driving speed is very fast, according to actual conditions, can adjust described predetermined interval.
Step S150, according to described first recognition time, the second recognition time and automotive average speed, calculate the visual range of current running car road.
In the specific implementation, the computing formula of described visual range is in the present invention: visual range=(the second recognition time-the first recognition time) * running car average velocity.Be specially, visual range S=(T
2-T
1) * V.
Further, the positional information of automobile is acquired by the GPS location of automobile, can form the visibility early-warning parameters of running car according to the location information data of a series of visual range data in the vehicle traveling process calculated, running car etc., line visibility of going forward side by side advanced warning grade divides as grade I, II, III, IV, V; Such as, described visibility early-warning parameters can comprise: time, place, section, visual range, visibility advanced warning grade etc.Described visibility advanced warning grade parameter sends by wireless network, provides the visibility in this section with reference to warning can to driving vehicle below.
Therefore the object of the invention is to solve because visibility data publication in transport information is not enough, to make in vehicle traveling process driver not by obtaining road visibility information at any time in order to carry out the problem effectively judged to road driving safe condition.Present invention achieves the method for the drive recorder identification road visibility by automobile is installed, even if the drive recorder of automobile adds new function: the visibility identifying travel.By on drive recorder according to identification target with reference to the time of object and the travel speed of automobile, calculate the visibility in running car road conditions, further increase the function application of drive recorder, improve driver to the early warning of automobile place road traffic safety and judgement, greatly facilitate driver.
Based on said method embodiment, present invention also offers a kind of system based on running recording instrument of automobile identification road visibility, as shown in Figure 2, described system comprises:
Obtain and identification module 210 with reference to object, for working as running car at road, and when appearing within the scope of running recording instrument of automobile camera view with reference to object, running recording instrument of automobile acquires object of reference volume image and judges whether the current object of reference volume image acquired successfully is identified; As detailed above.
First recognition time acquisition module 220, for successfully being identified when described object of reference volume image, judge that the current success of running recording instrument of automobile identifies with reference to object as target with reference to object, and obtain and be currently successfully identified as the time of target with reference to object, saved as the first recognition time; As detailed above.
Second recognition time acquisition module 230, for when described target disappears with reference to object within the scope of running recording instrument of automobile camera view, obtains the time that current described target disappears with reference to object, and is saved as the second recognition time; As detailed above.
Running car average velocity calculate and acquisition module 240, for calculating and obtaining the running car average velocity between the first recognition time, the second recognition time in the time period; As detailed above.
Visual range computing module 250, for according to described first recognition time, the second recognition time and automotive average speed, calculates the visual range of current running car road, as detailed above.
Further, described acquisition with reference to object also comprises with identification module 210:
Continue to obtain and recognition unit 2100 with reference to object, for when the described current object of reference volume image acquired successfully is not identified, running recording instrument of automobile continues to obtain other object of reference volume image within the scope of camera view, and continues to judge whether the object of reference volume image acquired successfully is identified; As detailed above.
Further, described running car average velocity calculates and specifically comprises with acquisition module:
Travel speed acquiring unit 2410, for acquiring the travel speed V of the automobile obtained in each predetermined interval in the time period between the first recognition time, the second recognition time
1, V
2, V
3, V
4..., V
n; ; As detailed above.
Running car average velocity computing unit 2420, for calculating, acquiring the running car average velocity V within the described time period:
V=(V
1+ V
2+ V
3+ V
4+ ...+V
n)/n; As detailed above.
Further, in the described system based on running recording instrument of automobile identification road visibility, described reference object includes but not limited to light pole, constant mark or white marking lines; And described predetermined interval is 0.3 second.
Further, in described system, in described visual range computing module 250, the computing formula of described visual range is:
Visual range=(the second recognition time-the first recognition time) * running car average velocity.
Method and system based on running recording instrument of automobile identification road visibility provided by the present invention, make running recording instrument of automobile add New function: to have the function that can identify road conditions visibility.By identifying that on drive recorder target is with reference to the time of object and the travel speed of automobile, calculate the visibility in running car road conditions, further increase the function application of drive recorder, improve driver to the early warning of automobile place road traffic safety and judgement, further, the road conditions visibility data acquired can be shared, greatly facilitate the understanding of other driver to traffic information, improve early warning degree and the degree of safety of running car.
Should be understood that, application of the present invention is not limited to above-mentioned citing, for those of ordinary skills, can be improved according to the above description or convert, and all these improve and convert the protection domain that all should belong to claims of the present invention.
Claims (10)
1., based on a method for running recording instrument of automobile identification road visibility, it is characterized in that, comprise step:
A, when running car is on road, and with reference to object appear within the scope of running recording instrument of automobile camera view time, running recording instrument of automobile acquires object of reference volume image and judges whether the current object of reference volume image acquired successfully is identified;
B, when described object of reference volume image is successfully identified, judge that the current success of running recording instrument of automobile identifies with reference to object as target with reference to object, and obtain and be currently successfully identified as the time of target with reference to object, saved as the first recognition time;
C, when described target disappears with reference to object within the scope of running recording instrument of automobile camera view, obtain the time that current described target disappears with reference to object, and saved as the second recognition time;
D, calculating obtain running car average velocity between the first recognition time, the second recognition time in the time period;
E, according to described first recognition time, the second recognition time and automotive average speed, calculate the visual range of current running car road.
2. the method based on running recording instrument of automobile identification road visibility according to claim 1, is characterized in that, also comprise in described steps A:
A1, when the described current object of reference volume image acquired successfully is not identified, running recording instrument of automobile continues to obtain other object of reference volume image within the scope of camera view, and continues to judge whether the object of reference volume image acquired successfully is identified.
3. the method based on running recording instrument of automobile identification road visibility according to claim 1, it is characterized in that, described step D specifically comprises:
D1, acquire the travel speed V of the automobile obtained in each predetermined interval in the time period between the first recognition time, the second recognition time
1, V
2, V
3, V
4..., V
n, and calculate, the running car average velocity V acquired within the described time period:
V=(V
1+V
2+V
3+V
4+...+V
n)/n。
4. the method based on running recording instrument of automobile identification road visibility according to claim 3, is characterized in that, the object of reference described in described steps A is light pole, constant mark or white marking lines; Predetermined interval described in described step D1 is 0.3 second.
5. the method based on running recording instrument of automobile identification road visibility according to claim 4, is characterized in that, in described step e, the computing formula of described visual range is:
Visual range=(the second recognition time-the first recognition time) * running car average velocity.
6., based on a system for running recording instrument of automobile identification road visibility, it is characterized in that, comprising:
Obtain and identification module with reference to object, for working as running car at road, and when appearing within the scope of running recording instrument of automobile camera view with reference to object, running recording instrument of automobile acquires object of reference volume image and judges whether the current object of reference volume image acquired successfully is identified;
First recognition time acquisition module, for successfully being identified when described object of reference volume image, judge that the current success of running recording instrument of automobile identifies with reference to object as target with reference to object, and obtain and be currently successfully identified as the time of target with reference to object, saved as the first recognition time;
Second recognition time acquisition module, for when described target disappears with reference to object within the scope of running recording instrument of automobile camera view, obtains the time that current described target disappears with reference to object, and is saved as the second recognition time;
Running car average velocity calculate and acquisition module, for calculating and obtaining the running car average velocity between the first recognition time, the second recognition time in the time period;
Visual range computing module, for according to described first recognition time, the second recognition time and automotive average speed, calculates the visual range of current running car road.
7. according to claim 6 based on the system of running recording instrument of automobile identification road visibility, it is characterized in that, described acquisition with reference to object also comprises with identification module:
Continue to obtain and recognition unit with reference to object, for when the described current object of reference volume image acquired successfully is not identified, running recording instrument of automobile continues to obtain other object of reference volume image within the scope of camera view, and continues to judge whether the object of reference volume image acquired successfully is identified.
8. according to claim 6 based on the system of running recording instrument of automobile identification road visibility, it is characterized in that, described running car average velocity calculates and specifically comprises with acquisition module:
Travel speed acquiring unit, for acquiring the travel speed V of the automobile obtained in each predetermined interval in the time period between the first recognition time, the second recognition time
1, V
2, V
3, V
4..., V
n;
Running car average velocity computing unit, for calculating, acquiring the running car average velocity V within the described time period:
V=(V
1+V
2+V
3+V
4+...+V
n)/n。
9. according to claim 8 based on the system of running recording instrument of automobile identification road visibility, it is characterized in that, described is light pole, constant mark or white marking lines with reference to object; Described predetermined interval is 0.3 second.
10. according to claim 6 based on the system of running recording instrument of automobile identification road visibility, it is characterized in that, in described visual range computing module, the computing formula of described visual range is:
Visual range=(the second recognition time-the first recognition time) * running car average velocity.
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| CN201510782350.2A CN105335729A (en) | 2015-11-16 | 2015-11-16 | Method and system for identifying road visibility based on automobile data recorder |
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|---|---|---|---|
| CN201510782350.2A CN105335729A (en) | 2015-11-16 | 2015-11-16 | Method and system for identifying road visibility based on automobile data recorder |
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| CN106448223A (en) * | 2016-11-10 | 2017-02-22 | 吕宏 | Haze-auto-adaptive expressway traveling speed early-warning device and method |
| CN108182819A (en) * | 2017-12-30 | 2018-06-19 | 周姣 | A kind of roading method and vehicle based on technology of Internet of things |
| CN108638957A (en) * | 2018-05-11 | 2018-10-12 | 长安大学 | The device and method of vehicle fog lamp is automatically turned under a kind of night low visibility |
| CN108749708A (en) * | 2018-05-11 | 2018-11-06 | 长安大学 | The device and method of vehicle fog lamp is automatically turned under a kind of low visibility |
| CN109145692A (en) * | 2017-06-28 | 2019-01-04 | 奥迪股份公司 | Vehicle drive assist system and method |
| CN110020642A (en) * | 2019-05-14 | 2019-07-16 | 江苏省气象服务中心 | A kind of visibility recognition methods based on vehicle detection |
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| CN106448223A (en) * | 2016-11-10 | 2017-02-22 | 吕宏 | Haze-auto-adaptive expressway traveling speed early-warning device and method |
| CN106448223B (en) * | 2016-11-10 | 2019-12-13 | 石家庄市长兴惠达科技有限公司 | Expressway driving speed early warning device and method capable of automatically adapting to haze |
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| CN109145692B (en) * | 2017-06-28 | 2022-01-07 | 奥迪股份公司 | Vehicle driving assistance system and method |
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| CN108749708A (en) * | 2018-05-11 | 2018-11-06 | 长安大学 | The device and method of vehicle fog lamp is automatically turned under a kind of low visibility |
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| CN110020642A (en) * | 2019-05-14 | 2019-07-16 | 江苏省气象服务中心 | A kind of visibility recognition methods based on vehicle detection |
| CN110020642B (en) * | 2019-05-14 | 2023-03-24 | 江苏省气象服务中心 | Visibility identification method based on vehicle detection |
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Application publication date: 20160217 |
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