CN208820953U - The device at rapid survey video camera inclination angle and field angle - Google Patents
The device at rapid survey video camera inclination angle and field angle Download PDFInfo
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- CN208820953U CN208820953U CN201821737137.5U CN201821737137U CN208820953U CN 208820953 U CN208820953 U CN 208820953U CN 201821737137 U CN201821737137 U CN 201821737137U CN 208820953 U CN208820953 U CN 208820953U
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Abstract
The utility model relates to the devices at a kind of rapid survey video camera inclination angle and field angle, including video camera fixed station, for fixing the position of video camera；Imageable target test board, on the video camera fixed station within the scope of the imaging viewing field of video camera, and the imaging viewing field upper end is corresponding with the upper end of imageable target test board, the imaging viewing field lower end is corresponding with the lower end of imageable target test board, for being imaged according to concentric circles figure；Three axial adjustment frame in high precision, for adjusting the position of test board；Computer is controlled, for adjusting the height of three axial adjustment frames.Using the device at the rapid survey video camera inclination angle and field angle, the initialization relative position of fixed tested video camera and imageable target test board is imaged concentric circles figure using video camera, simple to operate, favorable repeatability can quick obtaining result.
Description
Technical field
The utility model relates to photoelectricity test field, more particularly to measurement video camera inclination angle and field angle testing field, tools
Body refers to the device of a kind of rapid survey video camera inclination angle and field angle.
Background technique
Video camera is usually made of optical system, imaging system, control system, and the inclination angle of video camera and field angle are camera shootings
Two important indicators of machine system characterize the imaging viewing field orientation and imaging angle range of video camera respectively.
Currently, the measurement for video camera imaging inclination angle, there has been no cross relevant report in the prior art；And camera field of view
The common scaling method in angle is that video camera is mounted on turntable, to the asterism borescopic imaging placed at focal surface of collimator tube, rotation
Turntable makes video camera be moved to the most edge of the other end from the most edge of one end to the imaging in asterism hole.Turntable rotation at this time
Angle is the field angle of video camera, and by 90 degree of camera rotation, the view in another direction can be measured using identical method
Rink corner.
This method is equivalent with following formula:
In existing field angle test method, the distance L that can also be moved by video camera along optical axis1-L2And corresponding view
The width difference W of field1-W2Obtain the field angle of video camera:
In addition, the field angle of video camera can by the position of fixation object to be calibrated, by the certain angle of camera rotation,
The position difference for the uncalibrated image that comparison rotation front and back obtains, calculates the field of view angle of video camera.
Above-mentioned several method all assumes that the imaging plane of video camera in the horizontal direction, has fixation after not being suitable for installation
The video camera (such as: more mesh panoramic cameras with fixed angle) at inclination angle, and video camera mounting surface be usually it is fixed,
The measurement of the field angle in another direction is relatively complicated, greatly influences the efficiency of test.
Utility model content
The shortcomings that the purpose of the utility model is to overcome the above-mentioned prior arts provides a kind of simplified operating procedure, mentions
High testing efficiency, the rapid survey video camera inclination angle of quick obtaining field angle and the device of field angle.
To achieve the goals above, the rapid survey video camera inclination angle of the utility model and the device of field angle are as follows:
The device at the rapid survey video camera inclination angle and field angle, is mainly characterized by, and the system includes:
Video camera fixed station, imageable target test board, three axial adjustment frames of high-precision, control computer, the imaging mesh
Mapping test plate (panel) is on the video camera fixed station within the scope of the imaging viewing field of video camera, and the imaging viewing field upper end and institute
The upper end for the imageable target test board stated is corresponding, three axial adjustment frame of high-precision and horizontal plane, with it is described at
As target detection plate is connected, the control computer is connected with three axial adjustment frame of high-precision.
Preferably, the imageable target test board is posted using center as positioning identifier point horizontal and vertical respectively
Graduated scale.
Preferably, the imageable target test board includes the concentric circles figure patch group for respectively corresponding different field angles.
Preferably, the concentric circles figure patch group be centered on positioning identifier point, radius beFigure
Patch group.
Preferably, the imageable target test board is above and below the imaging scale in video camera, bilateral symmetry, and it is in and takes the photograph
The center of camera visual field.
Preferably, the size of the image border of the frame and video camera of the imageable target test board matches unanimously.
Using the device at the rapid survey video camera inclination angle and field angle, fixed tested video camera and imageable target are tested
The initialization relative position of plate is imaged concentric circles figure using video camera, and simple to operate, favorable repeatability can
Quick obtaining result.Suitable for there is the test of fixed angle video camera, imageable target test board is carried out using three-dimensional trim holder
Rotation and translation operation, can obtain inclination angle and the field angle of video camera simultaneously, shorten the testing time, improve test effect
Rate.
Detailed description of the invention
Fig. 1 be the utility model rapid survey video camera inclination angle and field angle device aclinal when structural representation
Figure.
Fig. 2 is structural representation when having an inclination angle of the rapid survey video camera inclination angle of the utility model and the device of field angle
Figure.
Fig. 3 is on the imageable target test board of the rapid survey video camera inclination angle of the utility model and the device of field angle
Graduated scale.
Fig. 4 is on the imageable target test board of the rapid survey video camera inclination angle of the utility model and the device of field angle
Graduated scale and concentric circles.
Appended drawing reference:
1 target detection plate
2 three axial adjustment frames
3 concentric circles figures
4 control computers
5 fixed stations
6 tested video cameras
Specific embodiment
In order to more clearly describe the technology contents of the utility model, carry out combined with specific embodiments below into one
The description of step.
The device at the rapid survey video camera inclination angle and field angle, is mainly characterized by, and the system includes:
Video camera fixed station, imageable target test board, three axial adjustment frames of high-precision, control computer, the imaging mesh
Mapping test plate (panel) is on the video camera fixed station within the scope of the imaging viewing field of video camera, and the imaging viewing field upper end and institute
The upper end for the imageable target test board stated is corresponding, three axial adjustment frame of high-precision and horizontal plane, with it is described at
As target detection plate is connected, the control computer is connected with three axial adjustment frame of high-precision.
Preferably, the imageable target test board is posted using center as positioning identifier point horizontal and vertical respectively
Graduated scale.
Preferably, the imageable target test board includes the concentric circles figure patch group for respectively corresponding different field angles.
Preferably, the concentric circles figure patch group be centered on positioning identifier point, radius beFigure
Patch group.
Preferably, the imageable target test board is above and below the imaging scale in video camera, bilateral symmetry, and it is in and takes the photograph
The center of camera visual field.
Preferably, the size of the image border of the frame and video camera of the imageable target test board matches unanimously.
In specific embodiment of the present utility model, device includes video camera fixed station, imageable target test board 1, high-precision
Spend three axial adjustment frames and control computer.The initialization relative position of fixed tested video camera and imageable target test board 1.It is logical
The graduated scale for crossing 1 center of imageable target test board quickly judges whether tested video camera has inclination angle, if tested video camera inclination angle
For 0 (visual field is in horizontal direction), then carry out tested video camera directly to the feature concentric circles figure on imageable target test board 1
Imaging.The concentric circles of different radii represents the size of different field angles, by reading the same of video camera acquisition from control computer
Heart circular image, can be with the field angle of quick obtaining video camera；If tested video camera has fixed angle Q, pass through three axial adjustment frame tune
The position for saving imageable target test board 1, keeps it parallel with the imaging direction of tested video camera, and video camera surveys imageable target at this time
The imaging of concentric circles and graduated scale on test plate (panel) 1 in a standard zhou duicheng tuxing (i.e. scale up and down, left and right scale it is complete
It is equal), the angle that three axial adjustment frames are rotated along y-axis, the i.e. inclination angle of tested video camera are then read by control computer；Pass through
Control computer reads the water that video camera directly acquires tested video camera to the imaging figure of concentric circles on imageable target test board 1
Flat, vertical field of view angle.The utility model provides the device of a kind of rapid survey video camera inclination angle and field angle.
The utility model provides the device of a kind of rapid survey video camera inclination angle and field angle.Device includes that video camera is solid
Determine platform 5, imageable target test board 1, three axial adjustment frames 2 of high-precision and control computer 4.Control computer and three axial adjustment frames
It is connected, three axial adjustment frames are connected with imageable target test board 1；Tested video camera 6 is placed in fixed station, to transportable imaging
Target detection plate 1 is imaged.
Position of the video camera fixed station for fixed calibration video camera.Imageable target test board 1 is positioning mark with center
Know point, sticks graduated scale respectively horizontal and vertical.Imageable target test board 1 is carried out for being caught in three axial adjustment frames of high-precision
It is fixed.Control computer is used to adjust the height of three axial adjustment frames.
Also comprising the concentric circles figure patch demarcated on mapping test plate (panel), wherein different concentric radius of circles corresponds to different views
Rink corner.
The initialization relative position of fixed tested video camera and imageable target test board 1.By in imageable target test board 1
The graduated scale of the heart quickly judges whether tested video camera has inclination angle, if tested video camera inclination angle is 0 (visual field is in horizontal direction),
Tested video camera is imaged directly to the feature concentric circles figure on imageable target test board 1.Different radii it is concentric
Circle represents the size of different field angles, by reading the concentric circle diagram picture that video camera obtains from control computer, can quickly obtain
Take the field angle of video camera；
If tested video camera has fixed angle Q, the position of imaging target detection plate 1 is adjusted by three axial adjustment frames, makes it
Parallel with the imaging direction of tested video camera, video camera is to the concentric circles and graduated scale on imageable target test board 1 at this time
Imaging in a standard zhou duicheng tuxing (i.e. scale up and down, left and right scale it is essentially equal), then by control calculate it is machine-readable
The angle for taking three axial adjustment frames to rotate along y-axis, the i.e. inclination angle of tested video camera；Video camera is read to imaging by control computer
The imaging figure of concentric circles directly acquires the level of tested video camera, vertical field of view angle on target detection plate 1.
The imaging direction of the control tested video camera is parallel with the direction of imageable target test board 1, by taking the photograph to be measured
Camera is fixed on fixed station, and control computer adjusts three axial adjustment frames to initial position.Imaging mesh is adjusted by three axial adjustment frames
Mapping test plate (panel) 1 rotates along the y-axis direction, and it is parallel with imageable target test board 1 to adjust camera plane, reads from control computer
Rotational angle Q, due to the presence of inclination angle Q, the distance change of tested video camera camera lens and imageable target test board 1 L=D ×
(1-cosQ), by moving distance L along the x-axis direction, and again, adjustment imaging target detection plate 1 moves down it along in-plane
Dynamic, until it is in the center of tested video camera, the angle read in concentric circle diagram picture at this time is tested video camera
Field angle.
The method at this rapid survey video camera inclination angle and field angle:
1) using 1 center of imageable target test board as positioning identifier point, graduated scale is sticked respectively horizontal and vertical, such as
Shown in Fig. 3.
2) calibration PTZ camera is mounted on fixed station 5, adjusts calibration PTZ camera visual field in horizontal direction.It adjusts
Save three axial adjustment frames 2 and horizontal plane.Imageable target test board 1 is caught in three axial adjustment frames 2 of high-precision, is counted by control
Calculation machine 4 adjusts the height and angle of three axial adjustment frames 2, makes imageable target test board 1 above and below the imaging scale in video camera, is left
Right symmetrical, imageable target test board 1 is in the center of calibration PTZ camera visual field at this time.It is controlled by control computer 4
It makes three axial adjustment frames 2 to move horizontally, the image side for showing the frame of board imageable target test board 1 and calibration PTZ camera
Edge is just consistent, sets the position as the initialized location of three axial adjustment frames 2 by controlling computer 4, and record and calibrate at this time
The relative distance D at PTZ camera center and 1 center of imageable target test board.The direction of translatory motion of three axial adjustment frame 2
It is vertical with the plane where imageable target test board 1.
It 3) can according to the formula of the relative position of three axial adjustment frames 2 of calibration PTZ camera and initialization and field angle
To calculate the camera to be measured of any field angle under the initialized location in the areas imaging of imageable target test board 1, Ke Yi
On imageable target test board 1 centered on positioning identifier point, radius isConcentric circles demarcated.By what is demarcated
Concentric circles figure 3 is attached on imageable target test board 1, as shown in figure 4, completing the calibration before test.
Rω0=D × tan (ω 0/2)；
Rω1=D × tan (ω 1/2)；
Rω2=D × tan (ω 2/2)；
Rωn=D × tan (ω n/2)；
4) tested video camera is mounted on fixed station 5, imaging viewing field in horizontal direction, fixes tested video camera and imaging
The initialization relative position of target detection plate 1.Quickly judged by the graduated scale data at 1 center of imageable target test board to be measured
Whether video camera has inclination angle, if tested video camera inclination angle is 0 (visual field is in horizontal direction), makes tested video camera directly to imaging
Feature concentric circles figure 3 on target detection plate 1 is imaged, and the concentric circles of different radii represents the size of different field angles,
It, can be with the field angle of quick obtaining video camera, such as by reading the concentric circle diagram picture that tested video camera obtains from control computer 4
Shown in Fig. 1.
Due to video camera form, volume, weight etc., if the imaging viewing field of video camera and horizontal direction are inclined in unknown
Angle Q adjusts three axial adjustment frames 2 to initial position by the way that tested video camera is fixed on fixed station first.Pass through three axial adjustment frames
2 adjustment imaging target detection plates 1 rotate along the y-axis direction, and it is parallel with imageable target test board 1 to adjust camera plane, from control
Computer 4 processed reads rotational angle Q.Due to the presence of inclination angle Q, the level of tested video camera camera lens and imageable target test board 1
Distance change L=D × (1-cosQ), by moving distance L along the x-axis direction, and the edge of adjustment imaging target detection plate 1 again
Its in-plane moves up and down, and is at the center of tested video camera, and the angle read in concentric circle diagram picture at this time is
For the field angle of tested video camera, as shown in Figure 2.
Above-mentioned control computer 4 is connected with three axial adjustment frames 2, and three axial adjustment frames 2 are connected with imageable target test board 1；To
It surveys video camera and is placed in fixed station 5, transportable imageable target test board 1 is imaged.
Using the device at the rapid survey video camera inclination angle and field angle, fixed tested video camera and imageable target are tested
The initialization relative position of plate 1 is imaged concentric circles figure using video camera, and simple to operate, favorable repeatability can
Quick obtaining result.Suitable for there is the test of fixed angle video camera, imageable target test board 1 is carried out using three-dimensional trim holder
Rotation and translation operation, can obtain inclination angle and the field angle of video camera simultaneously, shorten the testing time, improve test effect
Rate.
In this description, the utility model is described with reference to its specific embodiment.But it is clear that still can be with
The spirit and scope that various modification can be adapted and converts without departing from the utility model.Therefore, the description and the appended drawings should be considered as
It is illustrative and not restrictive.
Claims (6)
1. the device at a kind of rapid survey video camera inclination angle and field angle, which is characterized in that the device includes:
Video camera fixed station, imageable target test board, three axial adjustment frames of high-precision, control computer, the imageable target are surveyed
Test plate (panel) is on the video camera fixed station within the scope of the imaging viewing field of video camera, and the imaging viewing field upper end and described
The upper end of imageable target test board is corresponding, three axial adjustment frame of high-precision and horizontal plane, with the imaging mesh
Mapping test plate (panel) is connected, and the control computer is connected with three axial adjustment frame of high-precision.
2. the device at rapid survey video camera according to claim 1 inclination angle and field angle, which is characterized in that it is described at
Picture target detection plate posts graduated scale horizontal and vertical using center as positioning identifier point respectively.
3. the device at rapid survey video camera according to claim 1 inclination angle and field angle, which is characterized in that it is described at
As target detection plate includes the concentric circles figure patch group for respectively corresponding different field angles.
4. the device at rapid survey video camera according to claim 3 inclination angle and field angle, which is characterized in that described is same
Heart circle diagram shape patch group be centered on positioning identifier point, radius beFigure patch group.
5. the device at rapid survey video camera according to claim 1 inclination angle and field angle, which is characterized in that it is described at
As target detection plate above and below the imaging scale in video camera, bilateral symmetry, and be in the center of camera field of view.
6. the device at rapid survey video camera according to claim 1 inclination angle and field angle, which is characterized in that it is described at
As the size of the image border of the frame and video camera of target detection plate matches unanimously.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821737137.5U CN208820953U (en) | 2018-10-25 | 2018-10-25 | The device at rapid survey video camera inclination angle and field angle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821737137.5U CN208820953U (en) | 2018-10-25 | 2018-10-25 | The device at rapid survey video camera inclination angle and field angle |
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