CN104091450A - Video tachymeter and video speed measurement method - Google Patents
Video tachymeter and video speed measurement method Download PDFInfo
- Publication number
- CN104091450A CN104091450A CN201410208606.4A CN201410208606A CN104091450A CN 104091450 A CN104091450 A CN 104091450A CN 201410208606 A CN201410208606 A CN 201410208606A CN 104091450 A CN104091450 A CN 104091450A
- Authority
- CN
- China
- Prior art keywords
- opening
- video
- camera
- protective cover
- camera lens
- 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.)
- Granted
Links
Abstract
The invention provides a video tachymeter and a video speed measurement method. The video tachymeter is installed on a support at the edge of a road. The video tachymeter is of a separation-combination type or an integrated one-piece type in the form. As for a video tachymeter of a separation-combination type, a camera is connected with a computer device, which is arranged outside the camera and used for carrying out vehicle speed calculation on a target vehicle according to image data acquired by the camera, through a data transmission line; for a video tachymeter of an integrated one-piece type, a camera and a calculation block are integrated in a built-in manner to realize directly speed measurement and output, storage and/or uploading of a speed measurement result. A protective cover is arranged on the support. The protective cover is provided with at least one opening. The video tachymeter includes at least one camera. Each camera includes an image processing unit and at least one lens. The at least one lens is capable of acquiring images of driving states of vehicles in the two directions of a road. The method for carrying out image acquisition synchronously in different directions of the road realizes driving speed detection of vehicles running on a road.
Description
Technical field
The present invention relates to electronic device field, be specifically related to a kind of video frequency velometer and video frequency speed-measuring method.
Background technology
At field of traffic, in order to guarantee road driving safety, conventionally need to carry out travel speed detection to the vehicle travelling on road.The mode of in prior art, the vehicle in travelling being carried out to speed detection has detections of radar, coil-induced detection and video image acquisition to detect several modes conventionally.Wherein detections of radar is to encounter vehicle reflection wave afterwards by transmitting radar wave receiving radar ripple, passes through afterwards the mode of both mistimings, calculates the travel speed of vehicle; It is by pre-plugged ground inductive coil on road that environment coil detects, when vehicle passes through described coil, the inductance value that vehicle body cutting magnetic line causes changes, afterwards, according to known coil spacing distance, by vehicle, roll the travel speed of the time difference measurements vehicle of adjacent windings.This kind of test mode can be referring to Fig. 1.The third is common video frequency speed-measuring mode, that video camera is facing one direction installed on road, by video camera, the vehicle travelling is carried out to image acquisition, afterwards by following the tracks of automobile image displacement time in presumptive area in video image in video image, and the distance of presumptive area, in conjunction with video calibration technique, the principle that equals speed divided by the time according to distance is carried out the calculating of car speed.
Existing video frequency speed-measuring is by the analysis to haplopia territory continuous videos image, analyzes the traveling process of vehicle, by analyzing vehicle location and traveling time, calculates the speed of a motor vehicle.Its shortcoming is that video camera setting height(from bottom), position and shooting angle are had relatively high expectations, and, because the visual range of single direction video camera is less, therefore shorter to vehicle tracking judging distance, cause the accurate discriminating of moving vehicle particular location to have larger error, and error can improve and increase along with the speed of a motor vehicle.
Summary of the invention
The object of this invention is to provide a kind of video frequency velometer and video frequency speed-measuring method, with by the different directions of road is carried out to the mode of image acquisition simultaneously, realize the travel speed of the vehicle moving on road is detected.
First aspect, the invention provides a kind of video frequency velometer, be installed on the support of road edge, described video frequency velometer comprises video camera and computer equipment, described video camera and computer equipment are separate in physical state, described video camera connects described computer equipment by data line, described computer equipment is for carrying out speed of a motor vehicle calculating according to the view data of described camera acquisition to target vehicle, on described support, be provided with a protective cover, this protective cover has at least one opening, it is characterized in that, described video frequency velometer comprises at least one video camera, this video camera comprises graphics processing unit and at least one camera lens, described at least one camera lens can gather the image of the vehicle running state of both direction on described road.
Be noted that, in the video measurement instrument of above-mentioned first aspect, the implication of " described video camera and computer equipment are separate in physical state " refers to: although described video camera and computer equipment belong to described video measurement instrument, but externally it seems that the two is presented as two independently parts, only can be provided with communication link to communicate between the two.Described communication link can be wireless, can be also wired, at this, is not particularly limited.
Be noted that described computer equipment, refer to that those have the equipment of calculating, storage and/or upload function, also can be called computing equipment, computing element, computing module, or other titles, at this, be not particularly limited.
According to the video frequency velometer described in preferred embodiment of the present invention, wherein, described protective cover has the first opening and the second opening, and described the first opening and the second opening are respectively towards road both direction.
According to the video frequency velometer described in preferred embodiment of the present invention; wherein; described protective cover vertically arranges; in this protective cover, be provided with two catoptrons; between two catoptrons, be setting angle; two catoptrons are respectively towards described the first opening and described the second opening; described position for video camera is in the bottom of described protective cover; described video camera comprises a camera lens; described camera lens is towards top; the projection of described two catoptrons covers described camera lens, so that described camera lens can gather two images in described catoptron simultaneously.
According to the video frequency velometer described in preferred embodiment of the present invention, wherein, described video camera comprises a camera lens, described protective cover is obliquely installed, described the first opening and the second opening lay respectively at two adjacent sides of described protective cover, described the first opening is positioned at the left surface of described protective cover, and described left surface is towards a direction of described road, and described camera lens is towards described the first opening;
Described the second opening is positioned at the downside of described protective cover; described downside is towards the other direction of described road; in described protective cover, be provided with a catoptron; described catoptron is positioned at described camera lens in the direction of described the first opening; towards described camera lens; described camera lens is setting angle with described the second opening, so that can gather the image in described the first opening and the described second opening visual field simultaneously.
According to the video frequency velometer described in preferred embodiment of the present invention, wherein, described video camera comprises two synchronous camera lenses, and described two camera lenses are respectively towards described the first opening and described the second opening.
According to the video frequency velometer described in preferred embodiment of the present invention, wherein, in described protective cover, be provided with two video cameras, described two video cameras comprise respectively a camera lens, and the camera lens of each video camera is respectively towards described the first opening and described the second opening.
Be noted that described video frequency velometer is a kind of product, also can be called video frequency speed-measuring device, video frequency speed-measuring equipment, video frequency speed-measuring system etc., at this, do not repeat.
In second aspect, the invention provides another video frequency velometer, be installed on the support of road edge, on described support, be provided with a protective cover, this protective cover has at least one opening, described video frequency velometer comprises at least one video camera and computing module, between described video camera and described computing module, integrate, between described video camera and described computing module, there is built-in communication link, described video camera comprises graphics processing unit and at least one camera lens, described at least one camera lens can gather the image of the vehicle running state of both direction on described road, described computing module is for carrying out speed of a motor vehicle calculating according to the view data of described camera acquisition to target vehicle.
Be noted that described computing module, refer to that those have the equipment of calculating, storage and/or upload function, also can be called computing equipment, computing element, computer equipment, or other titles, at this, be not particularly limited.
Preferably, described protective cover has the first opening and the second opening, and described the first opening and the second opening are respectively towards road both direction.
Preferably; wherein; described protective cover vertically arranges, and is provided with two catoptrons in this protective cover, is setting angle between two catoptrons; two catoptrons are respectively towards described the first opening and described the second opening; described position for video camera is in the bottom of described protective cover, and described video camera comprises a camera lens, and described camera lens is towards top; the projection of described two catoptrons covers described camera lens, so that described camera lens can gather two images in described catoptron simultaneously.
Preferably, wherein, described video camera comprises a camera lens, described protective cover is obliquely installed, described, described the first opening and the second opening lay respectively at two adjacent sides of described protective cover, and described the first opening is positioned at the left surface of described protective cover, described left surface is towards a direction of described road, and described camera lens is towards described the first opening; Described the second opening is positioned at the downside of described protective cover; described downside is towards the other direction of described road; in described protective cover, be provided with a catoptron; described catoptron is positioned at described camera lens in the direction of described the first opening; towards described camera lens; described camera lens is setting angle with described the second opening, so that can gather the image in described the first opening and the described second opening visual field simultaneously.
Preferably, described video camera comprises two synchronous camera lenses, and described two camera lenses are respectively towards described the first opening and described the second opening.
Preferably, be provided with two video cameras in described protective cover, described two video cameras comprise respectively a camera lens, and the camera lens of each video camera is respectively towards described the first opening and described the second opening.
The third aspect, the invention provides a kind of video frequency speed-measuring method, described method comprises: the image of using the driving state of target vehicle of both direction on the video frequency velometer collection road as described in first aspect or second aspect, according to the view data of described video frequency velometer collection, target vehicle is carried out to speed of a motor vehicle calculating, described calculating is to be undertaken by the position of described target vehicle and traveling time.
Preferably, described calculating adopts following formula: the displacement of the speed of a motor vehicle=target vehicle/occur time corresponding to described displacement.That is, with the displacement of target vehicle, divided by there is traveling time corresponding to described displacement, can obtain the speed of a motor vehicle.
Preferably, the identification of described target vehicle is carried out according to car plate.
Owing to having adopted above technical characterictic, make the present invention than prior art, there is following advantage and good effect:
The present invention is provided with the video camera that can simultaneously gather the image of vehicle running state on road both direction, and by cable transmission to computing machine (or embedded computing module), by computing machine (or embedded computing module), according to marks such as car plates, identified the image that travels of same vehicle, judge same the vehicle mistiming between twice appearance and operating range on road, and judge accordingly the travel speed of vehicle, thereby calculate the accurate travel speed of vehicle.
Accompanying drawing explanation
Fig. 1 is the video frequency speed-measuring schematic diagram of prior art;
Fig. 2 is the structural representation of a kind of embodiment of a kind of video frequency velometer provided by the invention;
Fig. 3 is installment state figure embodiment illustrated in fig. 2;
Fig. 4 is the structural representation of the another kind of embodiment of a kind of video frequency velometer provided by the invention;
Fig. 5 is the structural representation of another embodiment of a kind of video frequency velometer provided by the invention;
Fig. 6 is the structural representation of another embodiment of a kind of video frequency velometer provided by the invention;
Fig. 7 is the video measurement method schematic diagram of the embodiment of the present invention.
Embodiment
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
The invention provides a kind of video frequency velometer, this kind of video frequency velometer can be installed on the support of road edge, camera/high-definition camera in described video frequency velometer transmits line by external data and connects the computer equipment in described video measurement instrument, described computer equipment (or adopts a kind of video camera and the embedded integral intelligent video camera of computing module for target vehicle being carried out to speed of a motor vehicle calculating according to the view data of described camera/high-definition camera collection, directly realize the result output of testing the speed and test the speed, storage, upload), on described support, be provided with a protective cover, video frequency velometer is placed in protective cover, this protective cover has at least one opening, described video frequency velometer comprises at least one video camera, this video camera comprises graphics processing unit and at least one camera lens, described at least one camera lens can gather the image of the vehicle running state of both direction on described road.
Preferably, described protective cover has the first opening and the second opening, and described the first opening and the second opening are respectively towards road both direction.
Fig. 2 is the structural representation of a kind of embodiment of video frequency velometer provided by the invention; as shown in Figure 2; in the present invention; protective cover 10 can be the structure of tubular; its material can be that timber, plastics or metal are made; for the protection of video camera 20, protective cover 10 is interior can arrange cable, thinks video camera 10 power supplies and/or the computing machine to control center by the image transmitting of video camera 10 collections.In this embodiment, video camera 20 is placed in the bottom of protective cover 10, and its camera lens 21 is towards the top of protective cover 10.The first opening 11 and the second opening 12 lay respectively at two relative sides of protective cover 10, when mounted, and can be respectively towards road both direction.
In this embodiment, described protective cover 10 vertically arranges, and is provided with the first catoptron 13 and second catoptron 14 these two catoptrons in this protective cover 10, between two described catoptrons, is setting angle, and angle can arrange according to the actual requirements.The first catoptron 13 and the second catoptron 14 cover described camera lens 21 towards the projection of described the first opening 11 and described the second opening 12, two catoptrons respectively, so that described camera lens 21 can gather two images in described catoptron simultaneously.
Fig. 3 is installment state schematic diagram embodiment illustrated in fig. 2, and as seen from Figure 3, during installation, video frequency velometer can be positioned at the top at the edge of road, and the first opening 11 and the second opening 12 are respectively towards the both direction of road.In this embodiment, by two mirror surfaces before camera lens, make a video camera can see the video image of both direction.
For example, when vehicle is gone to B from A point, in video, can first see and be positioned at A point vehicle, the time of supposition is T1, when vehicle is gone to B point, in video, can again occur this vehicle, the time of supposition is T2, and the computing machine that video frequency velometer connects can pass through vehicle detection or the accurate positioned vehicle of number plate of vehicle.The time of passing through that now speed of vehicle can be ordered to B from A point by vehicle and distance calculate.
For example, V=(L1+L2)/(T2-T1);
Wherein L1 is the distance that vehicle A point is ordered to B, and L2 is Vehicle length.
In actual use, general video camera setting height(from bottom) is 6-12 rice, and the distance that A point is ordered to B is generally 50-100m, even there is a small amount of error in vehicle location now, and 1-2 rice for example, range rate error is also no more than 4%; Can be good at meeting the demand of practical application.And, obtain strict synchronous multidirectional video in same camera lens, and in multidirectional video, same vehicle all can occur, and keep at a certain distance away, this distance is greater than the error of Vehicle length or video frequency vehicle location positioning, for example, more than 30 meters.Then by video analysis, calculate vehicle through the time interval of specified point in these two videos, and in conjunction with actual distance calculation, obtain the actual speed of vehicle.Be noted that the parameters such as the above-mentioned distance that adopts of arguing, error are all exemplary, do not form the restriction to the present invention's application.
Fig. 4 is the installment state schematic diagram of an alternative embodiment of the invention, as seen from Figure 4, described video camera 20 is identical with the embodiment shown in Fig. 2 in this embodiment, only include a camera lens 21, described protective cover 10 is obliquely installed, described the first opening 11 and the second opening 12 lay respectively at two adjacent sides of described protective cover 10, described the first opening 11 is positioned at the left surface of described protective cover 10, described left surface is towards a direction of described road, and described camera lens 21 is towards described the first opening 11;
Described the second opening 12 is positioned at the downside of described protective cover; described downside is towards the other direction of described road; in described protective cover 10, be provided with the 3rd catoptron 45; described the 3rd catoptron 45 is positioned at described camera lens 21 in the direction of described the first opening 11; towards described camera lens 21; described camera lens 21 is setting angle with described the second opening 12, so that can gather the image in described the first opening 11 and described second opening 12 visuals field simultaneously.
The mode of testing the speed of this embodiment can be identical with the embodiment shown in Fig. 4, seldom repeats.
Fig. 5 is the installment state schematic diagram of another embodiment of the present invention, in this embodiment, described video camera 50 (corresponding video camera 20 above) comprises two synchronous camera lenses, be respectively the first camera lens 51 and the second camera lens 52, the first camera lens 51 and the second camera lens 52, when mounted, can be respectively towards the first opening and the second opening 12.Described the first camera lens 51 and the second camera lens 52 can be CCD (Charge-coupled Device, charge coupled cell) or CMOS camera lens, each camera lens each facing one direction or visual field.
In addition, the image acquisition that can realize a plurality of positions of both direction that the video frequency velometer in the present invention comprises, also can realize through the camera of strict synchro control by two.For example, in the embodiment shown in Fig. 6, protective cover 10 inside are provided with two video cameras 20, and 21, two camera lenses of each self-contained camera lens, respectively towards an opening of protective cover, seldom repeat.
In two embodiment shown in Fig. 5 and Fig. 6, the mode of car speed being calculated by video acquisition is identical with the embodiment shown in Fig. 3, therefore seldom repeats.
For showing more intuitively, provided Fig. 7 by embodiments of the invention, Fig. 7 is the video measurement method schematic diagram of the embodiment of the present invention.As seen from Figure 7, described video frequency speed-measuring method comprises: step 700, with the image of the driving state of target vehicle of both direction on aforementioned video frequency velometer collection road; Step 702, carries out speed of a motor vehicle calculating according to the view data of described video frequency velometer collection to target vehicle, and described calculating is to be undertaken by the position of described target vehicle and traveling time.
Particularly, described calculating can adopt following formula: the displacement of the speed of a motor vehicle=target vehicle/occur time corresponding to described displacement.That is, with the displacement of target vehicle, divided by there is traveling time corresponding to described displacement, just can obtain the speed of a motor vehicle.
Particularly, the identification of described target vehicle can be to carry out according to car plate, or carries out according to other features of vehicle.
The present invention is provided with the video camera that can simultaneously gather the image of vehicle running state on road both direction, and by cable transmission to computing machine, image while identifying travelling of same vehicle by computing machine according to marks such as car plates, judge same the vehicle mistiming between twice appearance and operating range on road, and judge accordingly the travel speed of vehicle, thereby calculate the accurate travel speed of vehicle.
The present invention is by the time interval of vehicle ad-hoc location in two visual fields of Complete Synchronization (time, frame per second, space) with apart from the accurate speed that calculates vehicle.And the present invention, in the same camera video ken, supports dual area world coordinates to demarcate, and carries out vehicle location detection and track following.Based on same video camera CCD (Charge-coupled Device, charge coupled cell), Video processing assembly in conjunction with mirror-reflection principle, obtain two video kens that correlativity is strong simultaneously, synchronously carry out vehicle tracking and measure, avoid clock synchronous to impact vehicle speed measuring.
It should be noted last that, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement technical scheme of the present invention, and not depart from the spirit and scope of technical solution of the present invention.
Claims (10)
1. a video frequency velometer, be installed on the support of road edge, described video frequency velometer comprises video camera and computer equipment, described video camera and computer equipment are separate in physical state, described video camera connects described computer equipment by data line, described computer equipment is for carrying out speed of a motor vehicle calculating according to the view data of described camera acquisition to target vehicle, on described support, be provided with a protective cover, this protective cover has at least one opening, it is characterized in that, described video frequency velometer comprises at least one video camera, this video camera comprises graphics processing unit and at least one camera lens, described at least one camera lens can gather the image of the vehicle running state of both direction on described road.
2. video frequency velometer as claimed in claim 1, is characterized in that, described protective cover has the first opening and the second opening, and described the first opening and the second opening are respectively towards road both direction.
3. video frequency velometer as claimed in claim 2; it is characterized in that; described protective cover vertically arranges; in this protective cover, be provided with two catoptrons; between two catoptrons, be setting angle; two catoptrons are respectively towards described the first opening and described the second opening; described position for video camera is in the bottom of described protective cover; described video camera comprises a camera lens; described camera lens is towards top; the projection of described two catoptrons covers described camera lens, so that described camera lens can gather two images in described catoptron simultaneously.
4. video frequency velometer as claimed in claim 2, it is characterized in that, described video camera comprises a camera lens, described protective cover is obliquely installed, described the first opening and the second opening lay respectively at two adjacent sides of described protective cover, described the first opening is positioned at the left surface of described protective cover, and described left surface is towards a direction of described road, and described camera lens is towards described the first opening;
Described the second opening is positioned at the downside of described protective cover; described downside is towards the other direction of described road; in described protective cover, be provided with a catoptron; described catoptron is positioned at described camera lens in the direction of described the first opening; towards described camera lens; described camera lens is setting angle with described the second opening, so that can gather the image in described the first opening and the described second opening visual field simultaneously.
5. video frequency velometer as claimed in claim 2, is characterized in that, described video camera comprises two synchronous camera lenses, and described two camera lenses are respectively towards described the first opening and described the second opening.
6. video frequency velometer as claimed in claim 2, is characterized in that, is provided with two video cameras in described protective cover, and described two video cameras comprise respectively a camera lens, and the camera lens of each video camera is respectively towards described the first opening and described the second opening.
7. a video frequency velometer, be installed on the support of road edge, on described support, protective cover is set, this protective cover has at least one opening, it is characterized in that, described video frequency velometer comprises at least one video camera and computing module, and described video camera and described computing module integrate, described video camera comprises graphics processing unit and at least one camera lens, and described at least one camera lens can gather the image of the vehicle running state of both direction on described road; Described computing module is for carrying out speed of a motor vehicle calculating according to the view data of described camera acquisition to target vehicle.
8. video frequency velometer as claimed in claim 7; it is characterized in that; described protective cover has the first opening and the second opening; described the first opening and the second opening are respectively towards road both direction; and/or; described video camera comprises two synchronous camera lenses, and described two camera lenses are respectively towards described the first opening and described the second opening.
9. a video frequency speed-measuring method, described method comprises: the image of using the driving state of target vehicle of both direction on the video frequency velometer collection road as described in one of claim 1-8, according to the view data of described video frequency velometer collection, target vehicle is carried out to speed of a motor vehicle calculating, described calculating is to be undertaken by the position of described target vehicle and traveling time.
10. video frequency speed-measuring method as claimed in claim 9, is characterized in that, described calculating adopts following formula: the displacement of the speed of a motor vehicle=target vehicle/time corresponding to described displacement occurs, and/or the identification of described target vehicle is carried out according to car plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410208606.4A CN104091450B (en) | 2014-05-16 | 2014-05-16 | A kind of video frequency velometer and video frequency speed-measuring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410208606.4A CN104091450B (en) | 2014-05-16 | 2014-05-16 | A kind of video frequency velometer and video frequency speed-measuring method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104091450A true CN104091450A (en) | 2014-10-08 |
| CN104091450B CN104091450B (en) | 2017-08-01 |
Family
ID=51639163
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410208606.4A Active CN104091450B (en) | 2014-05-16 | 2014-05-16 | A kind of video frequency velometer and video frequency speed-measuring method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104091450B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105487322A (en) * | 2016-01-26 | 2016-04-13 | 东莞市普密斯精密仪器有限公司 | Lens structure of double image capturing and velocity measuring method utilizing same |
| CN106340185A (en) * | 2016-09-08 | 2017-01-18 | 杭州数梦工场科技有限公司 | Detection method of fee evasion vehicle and apparatus thereof |
| CN106872722A (en) * | 2017-04-25 | 2017-06-20 | 北京精英智通科技股份有限公司 | The measuring method and device of a kind of speed |
| CN113556452A (en) * | 2021-07-19 | 2021-10-26 | 柴勇 | Photographing device and photographing method |
| CN114267183A (en) * | 2021-12-22 | 2022-04-01 | 临沂鼎甲建筑科技有限公司 | Traffic control system with speed measuring function for town roads |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0918383A (en) * | 1995-06-28 | 1997-01-17 | Fuji Electric Co Ltd | Mobile object identification device |
| JP2001209885A (en) * | 2000-01-28 | 2001-08-03 | Nissin Electric Co Ltd | Number plate reader |
| CN101187671A (en) * | 2007-12-27 | 2008-05-28 | 北京中星微电子有限公司 | Method and device for determining automobile driving speed |
| CN101546111A (en) * | 2009-04-30 | 2009-09-30 | 浙江大学 | Method for twin-lens wide baseline catadioptric omnidirectional stereo imaging by using single camera and device thereof |
| CN101551585A (en) * | 2008-04-01 | 2009-10-07 | 晶宏半导体股份有限公司 | Image shooting device in panorama mode |
| CN101833863A (en) * | 2010-05-17 | 2010-09-15 | 瑞斯康达科技发展股份有限公司 | Method and device for detecting vehicle flow speed, as well as method and system for controlling traffic lights |
| CN203288083U (en) * | 2013-03-19 | 2013-11-13 | 北京万集科技股份有限公司 | Laser 3D vehicle scanning device |
| CN203849866U (en) * | 2014-05-16 | 2014-09-24 | 吴柯维 | Video velocimetry |
-
2014
- 2014-05-16 CN CN201410208606.4A patent/CN104091450B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0918383A (en) * | 1995-06-28 | 1997-01-17 | Fuji Electric Co Ltd | Mobile object identification device |
| JP2001209885A (en) * | 2000-01-28 | 2001-08-03 | Nissin Electric Co Ltd | Number plate reader |
| CN101187671A (en) * | 2007-12-27 | 2008-05-28 | 北京中星微电子有限公司 | Method and device for determining automobile driving speed |
| CN101551585A (en) * | 2008-04-01 | 2009-10-07 | 晶宏半导体股份有限公司 | Image shooting device in panorama mode |
| CN101546111A (en) * | 2009-04-30 | 2009-09-30 | 浙江大学 | Method for twin-lens wide baseline catadioptric omnidirectional stereo imaging by using single camera and device thereof |
| CN101833863A (en) * | 2010-05-17 | 2010-09-15 | 瑞斯康达科技发展股份有限公司 | Method and device for detecting vehicle flow speed, as well as method and system for controlling traffic lights |
| CN203288083U (en) * | 2013-03-19 | 2013-11-13 | 北京万集科技股份有限公司 | Laser 3D vehicle scanning device |
| CN203849866U (en) * | 2014-05-16 | 2014-09-24 | 吴柯维 | Video velocimetry |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105487322A (en) * | 2016-01-26 | 2016-04-13 | 东莞市普密斯精密仪器有限公司 | Lens structure of double image capturing and velocity measuring method utilizing same |
| CN106340185A (en) * | 2016-09-08 | 2017-01-18 | 杭州数梦工场科技有限公司 | Detection method of fee evasion vehicle and apparatus thereof |
| CN106340185B (en) * | 2016-09-08 | 2019-08-20 | 杭州数梦工场科技有限公司 | The detection method and device of fee evasion vehicle |
| CN106872722A (en) * | 2017-04-25 | 2017-06-20 | 北京精英智通科技股份有限公司 | The measuring method and device of a kind of speed |
| CN113556452A (en) * | 2021-07-19 | 2021-10-26 | 柴勇 | Photographing device and photographing method |
| CN113556452B (en) * | 2021-07-19 | 2022-06-17 | 柴勇 | Photographing device and photographing method |
| CN114267183A (en) * | 2021-12-22 | 2022-04-01 | 临沂鼎甲建筑科技有限公司 | Traffic control system with speed measuring function for town roads |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104091450B (en) | 2017-08-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11915491B2 (en) | Controlling host vehicle based on detected door opening events | |
| EP3544856B1 (en) | Determining a road surface characteristic | |
| EP3548845B1 (en) | Navigation based on vehicle activity | |
| US11734848B2 (en) | Pseudo lidar | |
| US10699567B2 (en) | Method of controlling a traffic surveillance system | |
| EP3619643A1 (en) | Detection and classification systems and methods for autonomous vehicle navigation | |
| JP6659367B2 (en) | Object detection device and object detection method | |
| CN101498889B (en) | Multi-eye stereo camera shooting method and device | |
| CN104091450A (en) | Video tachymeter and video speed measurement method | |
| KR20140053723A (en) | Driving lane recognition method and system | |
| CN102806913A (en) | Novel lane line deviation detection method and device | |
| CN104981836A (en) | Obstacle detection device and obstacle detection method | |
| CN103686083A (en) | Real-time speed measurement method based on vehicle-mounted sensor video streaming matching | |
| WO2021136970A1 (en) | Systems and methods for detecting traffic lights | |
| CN203849866U (en) | Video velocimetry | |
| US20230117253A1 (en) | Ego motion-based online calibration between coordinate systems | |
| US20230007156A1 (en) | Dual sensor readout channel to allow for frequency detection | |
| CN104155470A (en) | Detecting method and system based on binocular camera for real-time vehicle speed |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220530 Address after: 246700 No. 8, Chang'an Avenue, economic development zone, Zongyang County, Tongling City, Anhui Province Patentee after: Anhui Shentong Technology Co.,Ltd. Address before: 27 Erlong Road, Xicheng District, Beijing 100088 Patentee before: Wu Kewei |
|
| TR01 | Transfer of patent right |