CN105487322A - Lens structure of double image capturing and velocity measuring method utilizing same - Google Patents
Lens structure of double image capturing and velocity measuring method utilizing same Download PDFInfo
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- CN105487322A CN105487322A CN201610057300.2A CN201610057300A CN105487322A CN 105487322 A CN105487322 A CN 105487322A CN 201610057300 A CN201610057300 A CN 201610057300A CN 105487322 A CN105487322 A CN 105487322A
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000010276 construction Methods 0.000 claims description 22
- 230000001815 facial effect Effects 0.000 claims description 11
- 238000013479 data entry Methods 0.000 claims description 10
- 229920000535 Tan II Polymers 0.000 claims description 6
- 238000012360 testing method Methods 0.000 claims description 5
- 230000003287 optical effect Effects 0.000 abstract 1
- 230000007547 defect Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B17/00—Details of cameras or camera bodies; Accessories therefor
- G03B17/02—Bodies
- G03B17/17—Bodies with reflectors arranged in beam forming the photographic image, e.g. for reducing dimensions of camera
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/64—Devices characterised by the determination of the time taken to traverse a fixed distance
- G01P3/68—Devices characterised by the determination of the time taken to traverse a fixed distance using optical means, i.e. using infrared, visible, or ultraviolet light
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Abstract
The invention belongs to the technical field of photographing systems, and especially relates to a lens structure of double image capturing. The lens structure comprises a camera, a lens and two plane reflection elements. The lens is disposed in the joint portion of the camera. The two plane reflection elements are symmetrically disposed on the front end of the lens with a straight line where the central axis of the lens is located being a symmetrical axis. The two plane reflection elements are adjustable in angle. Compared with the prior art, the lens structure has the advantages that a plane reflection element pair is additionally disposed on the front end of the lens of the camera so as to change optical paths that enter a photographing apparatus; the photographing range is increased on the basis of only one camera; and less space is occupied. A method can obtain images in front of and at the back of a target vehicle that is photographed, thereby overcoming the disadvantages of conventional traffic photographing equipment.
Description
Technical field
The invention belongs to Camcording system technical field, particularly relate to a kind of slur as the lens construction of capture and use it to carry out the method tested the speed.
Background technology
Camera-shooting and recording device has now been widely used in the fields such as video monitoring, image location, outward appearance detection.For strengthening the management and control ability to traffic, to ensure the happy operation of traffic, modern general mode of shooting with video-corder vehicle in use adopts camera-shooting and recording device to be arranged on traffic route, to monitor the ruuning situation of traffic or to carry out traffic evidence obtaining.But, the existing this mode of shooting with video-corder also exists distinct disadvantage: camera-shooting and recording device can only take the image in single area, capture is greatly range-restricted, can only to shoot with video-corder before it for vehicle in use or below in the image of one side, and cannot the another side of vehicle be shot with video-corder, thus the more complete information of object vehicle being shot cannot be obtained.To shoot with video-corder the image in multiple region, often needing to increase more camera lens and supporting camera, cost and equipment maintenance cost can be made like this to increase, also need more installing space in addition.
In addition, application mode current on ITS tests the speed also is that a set of camera joined by employing camera lens, but is subject to the restriction of the camera lens depth of field, less between speed trial ground, causes the limitation in use.To increase between speed trial ground, ensureing that the image definition taken reaches requirement simultaneously, two covers or more complete equipment may be needed.
In view of this, necessaryly provide a kind of slur as the lens construction of capture and use it to carry out the method tested the speed, it is by increasing the reflecting element sheet group of adjustable-angle in camera lens front end, thus change enters the light path of shooting with video-corder instrument, on the basis only needing a camera, increase and shoot with video-corder scope, and it is little to take up room.The method can obtain the image on two sides before and after object vehicle being shot, solves the defect of original traffic camera-shooting and recording device.
Summary of the invention
The object of the invention is to: for the deficiencies in the prior art, and the lens construction of a kind of slur as capture and method are provided, it is by increasing the reflecting element sheet group of adjustable-angle in camera lens front end, thus change enters the light path of shooting with video-corder instrument, on the basis only needing a camera, increase and shoot with video-corder scope, and it is little to take up room.The method can obtain the image on two sides before and after object vehicle being shot, solves the defect of original traffic camera-shooting and recording device.
In order to achieve the above object, the present invention adopts following technical scheme:
A kind of slur is as the lens construction of capture, comprise camera, camera lens and two facial plane reflecting elements, camera lens is arranged at the interface of camera, two facial plane reflecting elements with the central shaft place straight line of camera lens for axis of symmetry is arranged at the front end of camera lens symmetrically, and the angle adjustable of plane reflecting element.
Improve as the one of slur of the present invention as the lens construction of capture, the distance between one end of the close described camera lens of plane reflecting element described in two sides be less than plane reflecting element described in two sides away from described camera lens one end between distance.
Improve as the one of slur of the present invention as the lens construction of capture, the angle between two facial plane reflecting elements is 2 θ, 10 ° of < θ < 80 °.
Improve as the one of slur of the present invention as the lens construction of capture, the distance between the contact point of two facial plane reflecting elements and camera lens is 1/6 ~ 2/3 of the length of plane reflecting element.
Improve as the one of slur of the present invention as the lens construction of capture, image store unit and image output unit is provided with in camera, the output terminal of described image store unit is connected with the input end of described image output unit, the described output terminal of image output unit is connected with the input end of display unit, image store unit for storing before object vehicle being shot image and image below, image output unit be used for by image before object vehicle being shot and below image output to display unit.
Improve as the one of slur of the present invention as the lens construction of capture, also timing unit is provided with in camera, computing unit, data entry element and data outputting unit, the output terminal of described data entry element is all connected with the input end of described computing unit with the output terminal of described timing unit, the output terminal of described computing unit is connected with the input end of described data outputting unit, timing unit is used for carrying out timing to object vehicle being shot by the time in certain region, data entry element is used for the angle of typing plane reflecting element, computing unit is used for the length according to the angle calculation region of plane reflecting element, and calculate the speed of a motor vehicle of object vehicle being shot, data outputting unit is used for exporting the speed of a motor vehicle calculated to other equipment.
During use, the present invention is installed on the top in section being shot, when object vehicle being shot enter first shoot with video-corder region time, light path, after the reflection of plane reflecting element, by camera lens, enters camera, thus shoots with video-corder and obtain image before object vehicle being shot;
In like manner, when object vehicle being shot advance to second shoot with video-corder region time, shot with video-corder the image below obtaining object vehicle being shot by said method.
By adjusting the angle at θ angle, namely adjust the angle of the two symmetrical plane reflecting elements installed, just can according to actual conditions needs, adjust first and shoot with video-corder region and second and shoot with video-corder distance between region, reach the demand that the most reasonably tests the speed.
Relative to prior art, the present invention at least tool has the following advantages:
The first, without the need to increasing camera-shooting and recording device, the basis of a camera can increase the scope of shooting with video-corder, thus add the utilization factor of large resource, reduce the input of fund and various resource.
The second, the present invention original to shoot with video-corder on basis only need increase by one group of plane reflecting element can reach shoot with video-corder vehicle front-back the object of image, take up room little, Installation and Debugging are convenient.
3rd, without the need to increasing relevant support equipment, both can increase between speed trial ground, again can distance as required between flexible speed trial ground.
In a word, the present invention is by increasing the plane reflecting element group of adjustable-angle in camera lens front end, thus change enters the light path of shooting with video-corder instrument, on the basis only needing a camera, increase and shoot with video-corder scope, and it is little to take up room.The method can obtain the image on two sides before and after object vehicle being shot, solves the defect of original traffic camera-shooting and recording device.
Present invention also offers a kind of slur that uses and carry out the method tested the speed as the lens construction of capture, comprise the following steps:
S1, regulates the angle of plane reflecting element, and by this angle input camera, camera calculates first and shoots with video-corder region and second and shoot with video-corder distance D between region;
S2, enters into first when shooting with video-corder region before object vehicle being shot, starts timing, until object vehicle being shot will sail out of second below when shooting with video-corder region, timing terminates, and timing is T second;
S3, calculates the speed of a motor vehicle, vehicle velocity V=D/T.
The one using slur to carry out as the lens construction of capture the method tested the speed as the present invention is improved, and described first shoots with video-corder region and described second computing formula of shooting with video-corder the length L in region is:
L＝h×tan2θ-h×tan(2θ-FOV/2)；
Described first shoot with video-corder shoot with video-corder region in region and described second a lateral edges close to each other between the computing formula of distance d1 be: d1=2h × tan (2 θ-FOV/2);
Described first shoot with video-corder that region and described second shoots with video-corder region mutual away from a lateral edges between the computing formula of distance d2 be: d2=2h × tan2 θ;
Wherein, θ is the angle between the central shaft place straight line of plane reflecting element and described camera lens, and h is one end height overhead of the close described camera lens of plane reflecting element, and FOV is viewing field of camera angle.
Relative to prior art, the present invention is simple, can calculate the speed of a motor vehicle of object vehicle being shot rapidly, thus solves original velocity-measuring system because the restriction of the camera lens depth of field and problem little between the speed trial ground that causes.
Accompanying drawing explanation
Fig. 1 is structural representation and the index path of the present invention's (embodiment 1).
Fig. 2 is the structured flowchart of camera in the present invention's (embodiment 1).
Fig. 3 is the FB(flow block) of the method tested the speed of the present invention's (embodiment 2).
Embodiment
Embodiment 1
As depicted in figs. 1 and 2, a kind of slur provided by the invention is as the lens construction of capture, comprise camera 1, camera lens 2 and two facial plane reflecting elements 3, camera lens 2 is arranged at the interface of camera 1, two facial plane reflecting elements 3 with the central shaft place straight line of camera lens 2 for axis of symmetry is arranged at the front end of camera lens 2 symmetrically, and the angle adjustable of plane reflecting element 3, wherein, this axis of symmetry and place, ground plane orthogonal.By the angle of adjustment plane reflecting element 3, adjust the angle of the two symmetrical plane reflecting elements 3 installed in other words, thus according to actual conditions needs, the distance of shooting with video-corder between region (first shoots with video-corder region 5 and second shoots with video-corder region 6) can be adjusted, reach the demand that the most reasonably tests the speed.
Distance between one end of the close camera lens 2 of two facial plane reflecting elements 3 be less than two facial plane reflecting elements 3 away from camera lens 2 one end between distance.
Angle between two facial plane reflecting elements 3 is 2 θ, 10 ° of < θ < 80 °, thus according to actual conditions needs, can adjust the distance of shooting with video-corder between region, reach the demand that the most reasonably tests the speed.
Distance between the contact point of two facial plane reflecting elements 3 and camera lens 2 is 1/6 ~ 2/3 of the length of plane reflecting element 3.Namely plane reflecting element 3 is not directly contact with camera lens 2, but with intervally has certain distance.
Image store unit 11 and image output unit 12 is provided with in camera 1, the output terminal of image store unit 11 is connected with the input end of image output unit 12, the output terminal of image output unit 12 is connected with the input end of display unit 4, image store unit 11 is for image before the object vehicle being shot that stores camera lens 2 and shoot with video-corder and image below, image output unit 12 for by image before object vehicle being shot and below image output to display unit 4, this display unit can be display or the outdoor large screen of control center, also or the display panel of this camera.
Timing unit 13 is also provided with in camera 1, computing unit 14, data entry element 15 and data outputting unit 16, the output terminal of data entry element 15 is all connected with the input end of computing unit 14 with the output terminal of timing unit 13, the output terminal of computing unit 14 is connected with the input end of data outputting unit 16, timing unit 13 is for carrying out timing to object vehicle being shot by the time in certain region, data entry element 15 is for 3 angles of typing plane reflecting element, computing unit 14 is for the length in the 3 angle calculation regions according to plane reflecting element, and calculate the speed of a motor vehicle of object vehicle being shot, data outputting unit 16 is for exporting the speed of a motor vehicle calculated to other equipment, as the display of control center, be convenient to the ruuning situation of supervision traffic or carry out traffic evidence obtaining.
During use, the present invention is installed on the top in section being shot, when object vehicle being shot enter first shoot with video-corder region 5 time, light path is after the reflection of plane reflecting element 3, by camera lens 2, enter camera 1, thus shoot with video-corder and obtain image before object vehicle being shot and be stored in image store unit 11, then export display unit 4 to by image output unit 12.
In like manner, when object vehicle being shot advance to second shoot with video-corder region 6 time, shoot with video-corder by said method the image below that obtains object vehicle being shot and be stored in image store unit 11, then exporting display unit 4 to by image output unit 12.
In a word, the present invention at least tool have the following advantages:
The first, without the need to increasing camera-shooting and recording device, the basis of a camera 1 can increase the scope of shooting with video-corder, thus add the utilization factor of large resource, reduce the input of fund and various resource.
The second, the present invention original to shoot with video-corder on basis only need increase by one group of plane reflecting element 3 can reach shoot with video-corder vehicle front-back the object of image, take up room little, Installation and Debugging are convenient.
3rd, without the need to increasing relevant support equipment, both can increase between speed trial ground, again can distance as required between flexible speed trial ground.
In a word, the present invention is by increasing the plane reflecting element 3 groups of adjustable-angle in camera lens 2 front end of camera 1, thus change enters the light path of shooting with video-corder instrument, on the basis only needing a camera 1, increase and shoot with video-corder scope, and it is little to take up room.The method can obtain the image on two sides before and after object vehicle being shot, solves the defect of original traffic camera-shooting and recording device.
Embodiment 2
As shown in Figure 3, present embodiments provide a kind of slur that uses and carry out the method tested the speed as the lens construction of capture, comprise the following steps:
S1, the present invention is installed on the top in section being shot, regulate the angle of plane reflecting element 3, this angle is inputted in camera 1 by data entry element 15, the computing unit 14 of camera 1 calculates first and shoots with video-corder region 5 and second and shoot with video-corder distance D between region 6, in FIG, distance D is the intersection point on leftmost light and ground and the distance between rightmost light and the intersection point on ground;
S2, to enter into before object vehicle being shot first when shooting with video-corder region 5 while entering into the leftmost light place of Fig. 1 foremost (vehicle), the light path of vehicle front is after the reflection of plane reflecting element 3, by camera lens 2, enter camera 1, computing unit 14 starts timing, until object vehicle being shot will sail out of below second when shooting with video-corder region 6 (when namely the rearmost end of vehicle will to sail out of in Fig. 1 the light by limit), now, the light path of rear vehicle end is after the reflection of plane reflecting element 3, by camera lens 2, enter camera 1, computing unit 14 timing terminates, timing is T second,
S3, computing unit 14 calculates the speed of a motor vehicle, vehicle velocity V=D/T, and data outputting unit 16 exports the value of the speed of a motor vehicle to control center.
Wherein, first region 5 is shot with video-corder and the second computing formula of shooting with video-corder the length L in region 6 is:
L＝h×tan2θ-h×tan(2θ-FOV/2)；
First shoot with video-corder shoot with video-corder region 6 in region 5 and second a lateral edges close to each other between the computing formula of distance d1 (minimum distance) be: d1=2h × tan (2 θ-FOV/2);
First shoot with video-corder that region 5 and second shoots with video-corder region 6 mutual away from a lateral edges between the computing formula of distance d2 (maximum distance) be: d2=2h × tan2 θ;
Wherein, θ is the angle between the central shaft place straight line of plane reflecting element 3 and camera lens 2, and h is one end height overhead of the close described camera lens of plane reflecting element, and FOV is viewing field of camera angle.
In a word, the present invention is simple, can calculate the speed of a motor vehicle of object vehicle being shot rapidly, thus solves original velocity-measuring system because the restriction of the camera lens depth of field and problem little between the speed trial ground that causes.
The announcement of book and instruction according to the above description, those skilled in the art in the invention can also carry out suitable change and amendment to above-mentioned embodiment.Therefore, the present invention is not limited to embodiment disclosed and described above, also should fall in the protection domain of claim of the present invention modifications and changes more of the present invention.In addition, although employ some specific terms in this instructions, these terms just for convenience of description, do not form any restriction to the present invention.
Claims (8)
1. a slur is as the lens construction of capture, it is characterized in that: comprise camera, camera lens and two facial plane reflecting elements, described camera lens is arranged at the interface of described camera, plane reflecting element described in two sides with the central shaft place straight line of described camera lens for axis of symmetry is arranged at the front end of described camera lens symmetrically, and the angle adjustable of described plane reflecting element.
2. slur according to claim 1 is as the lens construction of capture, it is characterized in that: the distance between one end of the close described camera lens of plane reflecting element described in two sides be less than plane reflecting element described in two sides away from described camera lens one end between distance.
3. slur according to claim 1 is as the lens construction of capture, it is characterized in that: the angle described in two sides between plane reflecting element is 2 θ, 10 ° of < θ < 80 °.
4. slur according to claim 2 is as the lens construction of capture, it is characterized in that: the distance between the contact point of plane reflecting element described in two sides and described camera lens is 1/6 ~ 2/3 of the length of described plane reflecting element.
5. slur according to claim 1 is as the lens construction of capture, it is characterized in that: in described camera, be provided with image store unit and image output unit, the output terminal of described image store unit is connected with the input end of described image output unit, the described output terminal of image output unit is connected with the input end of display unit, described image store unit for storing before object vehicle being shot image and image below, described image output unit be used for by image before object vehicle being shot and below image output to display unit.
6. slur according to claim 1 is as the lens construction of capture, it is characterized in that: in described camera, be also provided with timing unit, computing unit, data entry element and data outputting unit, the output terminal of described data entry element is all connected with the input end of described computing unit with the output terminal of described timing unit, the output terminal of described computing unit is connected with the input end of described data outputting unit, described timing unit is used for carrying out timing to object vehicle being shot by the time in certain region, described data entry element is used for the angle of typing plane reflecting element, described computing unit is used for the length according to the angle calculation region of plane reflecting element, and calculate the speed of a motor vehicle of object vehicle being shot, described data outputting unit is used for exporting the speed of a motor vehicle calculated to other equipment.
7. use the slur described in claim 1 to carry out the method tested the speed as the lens construction of capture, it is characterized in that, comprise the following steps:
S1, regulates the angle of plane reflecting element, and by this angle input camera, camera calculates first and shoots with video-corder region and second and shoot with video-corder distance D between region;
S2, enters into first when shooting with video-corder region before object vehicle being shot, starts timing, until object vehicle being shot will sail out of second below when shooting with video-corder region, timing terminates, and timing is T second;
S3, calculates the speed of a motor vehicle, vehicle velocity V=D/T.
8. use slur according to claim 7 carries out the method that tests the speed as the lens construction of capture, it is characterized in that: described first shoots with video-corder region and described second computing formula of shooting with video-corder the length L in region is:
L＝h×tan2θ-[h×tan(2θ-FOV/2)]；
Described first shoot with video-corder shoot with video-corder region in region and described second a lateral edges close to each other between the computing formula of distance d1 be: d1=2h × tan (2 θ-FOV/2);
Described first shoot with video-corder that region and described second shoots with video-corder region mutual away from a lateral edges between the computing formula of distance d2 be: d2=2h × tan2 θ;
Wherein, θ is the angle between the central shaft place straight line of plane reflecting element and described camera lens, and h is one end height overhead of the close described camera lens of plane reflecting element, and FOV is viewing field of camera angle.
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| CN201610057300.2A CN105487322A (en) | 2016-01-26 | 2016-01-26 | Lens structure of double image capturing and velocity measuring method utilizing same |
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| CN201610057300.2A CN105487322A (en) | 2016-01-26 | 2016-01-26 | Lens structure of double image capturing and velocity measuring method utilizing same |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108230677A (en) * | 2018-02-27 | 2018-06-29 | 吉林大学 | Travel condition of vehicle detection identification device based on position detection |
| CN112526158A (en) * | 2020-12-11 | 2021-03-19 | 济南和普威视光电技术有限公司 | Laser speed measurement system and method based on optical equipment |
| CN113239774A (en) * | 2021-05-08 | 2021-08-10 | 重庆第二师范学院 | Video face recognition system and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104036640A (en) * | 2014-05-16 | 2014-09-10 | 北京卓视智通科技有限责任公司 | Panoramic image acquisition device and panoramic image acquisition method |
| CN104091450A (en) * | 2014-05-16 | 2014-10-08 | 吴柯维 | Video tachymeter and video speed measurement method |
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2016
- 2016-01-26 CN CN201610057300.2A patent/CN105487322A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104036640A (en) * | 2014-05-16 | 2014-09-10 | 北京卓视智通科技有限责任公司 | Panoramic image acquisition device and panoramic image acquisition method |
| CN104091450A (en) * | 2014-05-16 | 2014-10-08 | 吴柯维 | Video tachymeter and video speed measurement method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108230677A (en) * | 2018-02-27 | 2018-06-29 | 吉林大学 | Travel condition of vehicle detection identification device based on position detection |
| CN112526158A (en) * | 2020-12-11 | 2021-03-19 | 济南和普威视光电技术有限公司 | Laser speed measurement system and method based on optical equipment |
| CN113239774A (en) * | 2021-05-08 | 2021-08-10 | 重庆第二师范学院 | Video face recognition system and method |
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Application publication date: 20160413 |