CN209000071U - A kind of lens distortion center calibration facility - Google Patents
A kind of lens distortion center calibration facility Download PDFInfo
- Publication number
- CN209000071U CN209000071U CN201822125271.6U CN201822125271U CN209000071U CN 209000071 U CN209000071 U CN 209000071U CN 201822125271 U CN201822125271 U CN 201822125271U CN 209000071 U CN209000071 U CN 209000071U
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- driving mechanism
- rotating frame
- scaling board
- camera lens
- calibration facility
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Abstract
The utility model discloses a kind of lens distortion center calibration facilities, the lens distortion center calibration facility includes rotating frame, the first driving mechanism, the second driving mechanism, first driving mechanism is connect with rotating frame, first driving mechanism is for driving rotating frame to rotate, scaling board is equipped in rotating frame, scaling board is connect with rotating frame by shaft, second driving mechanism is connect with scaling board, for second driving mechanism for driving scaling board relative rotation frame member, the front end of scaling board is equipped with camera lens placement platform.The lens distortion center calibration facility of the utility model can be cooperated by the first driving mechanism and the second driving mechanism, adjust the relative position between scaling board and camera lens, different photos is obtained convenient for camera lens, to realize the calibration to lens distortion.
Description
Technical field
The utility model relates to vision measurement imaging system caliberating device field, in particular to a kind of lens distortion center mark
Locking equipment.
Background technique
Image capturing system largely can all use camera lens, due to camera lens and sensor in assembling there are angle tilt,
Cause lens distortion center that can not be overlapped with center sensor, and can not determine center of distortion position, not can determine that center of distortion
Position is unfavorable for the post-processing to image, comes so center of distortion needs to calibrate.
Industry internal standard horizontal glass head center of distortion principle and method are mostly based at present " Zhang Zhengyou calibration ", refer to Zhang Zhengyou
The tessellated camera marking method in monoplane proposed in 1998 is taught, this method needs a gridiron pattern scaling board, passes through
Change the video camera photo that obtain three from the relative position between gridiron pattern scaling board different, can be counted with matlab or opencv
Calculate the center of distortion of camera lens.Current calibration is all to use manually to be adjusted gridiron pattern scaling board mostly, heavy workload,
Low efficiency, and calibration result stability is poor.
Utility model content
In view of the deficiencies of the prior art, the utility model aim is to provide a kind of safe and reliable, the strong camera lens of stability
Center of distortion calibration facility, adopts the following technical scheme that
A kind of lens distortion center calibration facility comprising rotating frame, the first driving mechanism, the second driving mechanism, institute
It states the first driving mechanism to connect with rotating frame, first driving mechanism is for driving the rotating frame to rotate, the rotation
Turn to be equipped with scaling board in frame, the scaling board is connect with the rotating frame by shaft, second driving mechanism and mark
Fixed board connection, second driving mechanism are used to that the scaling board to be driven to rotate relative to the rotating frame, the scaling board
Front end is equipped with camera lens placement platform, for placing camera lens.
The rotating frame bottom is equipped with circular arc type guide rail, the rotating frame as a further improvement of the utility model,
The bottom of frame is slidably connected with the arc-shaped rail, and the rotary shaft of the center of the arc-shaped rail and the rotating frame exists
On same straight line, first driving mechanism is for driving the rotating frame to rotate on the arc-shaped rail.
The scaling board includes chessboard compartment, AR glass and panel light source, institute as a further improvement of the utility model,
It states AR glass to be fixed on panel light source, the gridiron pattern layer is pressed together on AR glass.
Double-sided adhesive is equipped between the chessboard compartment and AR glass as a further improvement of the utility model,.
The AR glass includes tempered glass and the AR that is plated on tempered glass as a further improvement of the utility model,
Film.
It as a further improvement of the utility model, further include elevating mechanism, the elevating mechanism is for adjusting the mirror
The height of head placement platform.
The elevating mechanism includes casing, screw rod and handwheel as a further improvement of the utility model, described sleeve pipe and
Screw rod runs through the camera lens placement platform from vertical direction, and the handwheel is connect with screw rod, and the handwheel drives screw rod rotation,
The screw rod adjusts the height of the camera lens placement platform.
Camera lens placement platform bottom is equipped with sliding seat, the sliding seat as a further improvement of the utility model,
For adjusting the camera lens placement platform the distance between to the scaling board.
First driving mechanism and the second driving mechanism include electric rotating as a further improvement of the utility model,
Machine.
The utility model has the beneficial effects that
The lens distortion center calibration facility of the utility model drives rotating frame to rotate by the first driving mechanism, and
Scaling board is set in rotating frame, and scaling board rotating frame is connected by shaft, and the second driving mechanism of setting is for driving calibration
Plate relative rotation frame member is equipped with camera lens placement platform in the front end of scaling board.It can be driven by the first driving mechanism and second
The cooperation of motivation structure, adjusts the relative position between scaling board and camera lens, different photos is obtained convenient for camera lens, to realize to camera lens
The calibration of distortion.
The above description is merely an outline of the technical solution of the present invention, in order to better understand the skill of the utility model
Art means, and being implemented in accordance with the contents of the specification, and in order to allow the above and other purpose, feature of the utility model
It can be more clearly understood with advantage, it is special below to lift preferred embodiment, and attached drawing is matched, detailed description are as follows.
Detailed description of the invention
Fig. 1 is the overall structure diagram of lens distortion center calibration facility in the utility model embodiment；
Fig. 2 is the partial structural diagram one of lens distortion center calibration facility in the utility model embodiment；
Fig. 3 is the partial structural diagram two of lens distortion center calibration facility in the utility model embodiment.
Description of symbols: 100, the first rack；110, crossbeam；120, mounting base；130, the first driving mechanism；140, rotating frame
Frame；150, scaling board；160, the second driving mechanism；170, workbench；180, circular arc type guide rail；200, the second rack；210, mirror
Head placement platform；220, sliding seat；231, upper mounting plate；232, lower installation board；233, screw rod；234, casing；235, handwheel；
240, computer；250, display.
Specific embodiment
The utility model is described in further detail in the following with reference to the drawings and specific embodiments, so that those skilled in the art
The utility model may be better understood and can be practiced, but illustrated embodiment is not as the restriction to the utility model.
As shown in Figure 1-3, for the lens distortion center calibration facility in the present embodiment, the lens distortion center calibration facility
Including rotating frame 140, the first driving mechanism 130, the second driving mechanism 160, the first driving mechanism 130 and rotating frame 140
Connection, the first driving mechanism 130 are equipped with scaling board 150, scaling board for driving rotating frame 140 to rotate in rotating frame 140
150 are connect with rotating frame 140 by shaft, and the second driving mechanism 160 is connect with scaling board 150, and the second driving mechanism 160 is used
In driving 150 relative rotation frame 140 of scaling board rotation, the front end of scaling board 150 is equipped with camera lens placement platform 210, for putting
Camera lens is set, in the present embodiment, the first driving mechanism 130 and the second driving mechanism 160 include rotating electric machine.
The lens distortion center calibration facility further includes the first rack 100, and the first rack 100 is equipped with crossbeam 110, crossbeam
Mounting base 120 is fixed on 110, the first driving mechanism 130 is fixedly connected with mounting base 120.
Preferably, 140 bottom of rotating frame is equipped with circular arc type guide rail 180, the bottom of rotating frame 140 and arc-shaped rail
180 are slidably connected, and the center of arc-shaped rail 180 and the rotary shaft of rotating frame 140 are on same straight line, the first driving machine
Structure 130 rotates along the vertical direction for driving rotating frame to rotate on arc-shaped rail 180.Rotating frame 140 can be increased
Stability in rotation.
In the present embodiment, scaling board 150 includes chessboard compartment, AR glass and panel light source, and AR glass is fixed on panel
On light source, chessboard compartment is pressed together on AR glass using 3M double-sided adhesive, guarantees the flatness of chessboard compartment, AR glass includes tempering
Glass and the AR film being plated on tempered glass, effect are to increase transmissivity to reduce reflectivity.
The lens distortion center calibration facility further includes the second rack 200, and the second rack 200 is equipped with sliding seat 220, sliding
Dynamic seat 220 is equipped with elevating mechanism, which includes upper mounting plate 231, lower installation board 232, casing 233,234 and of screw rod
Handwheel 235, casing 233 and screw rod 234 are set between mounting plate 231 and lower installation board 232, and casing 234 and screw rod 233 are from perpendicular
Histogram to run through camera lens placement platform 210, between casing 234 and camera lens placement platform 210 be equipped with gap, casing 234 be used for
The cooperation of screw rod 233 limits camera lens placement platform 210 in the horizontal direction, and handwheel 235 is connect with screw rod 234, and handwheel 235 can drive silk
Bar 234 rotates, and screw rod 234 drives camera lens placement platform 210 to go up and down.
Computer 240 and display 250, the first driving mechanism 130, the second driving mechanism are additionally provided in second rack 200
160 and camera lens to be measured connect with computer 240, computer 240 is for controlling the first driving mechanism 130 and the second driving mechanism
160 rotations, and control camera lens to be measured and shot, and calculate the center of distortion of camera lens to be measured according to the picture of shooting.
The lens distortion center calibration facility of the utility model drives rotating frame to rotate by the first driving mechanism, and
Scaling board is set in rotating frame, and scaling board rotating frame is connected by shaft, and the second driving mechanism of setting is for driving calibration
Plate relative rotation frame member is equipped with camera lens placement platform in the front end of scaling board.It can be driven by the first driving mechanism and second
The cooperation of motivation structure, adjusts the relative position between scaling board and camera lens, different photos is obtained convenient for camera lens, to realize to camera lens
The calibration of distortion.
Above embodiments are only preferred embodiments for fully illustrating the utility model, the guarantor of the utility model
It is without being limited thereto to protect range.Those skilled in the art made equivalent substitute or transformation on the basis of the utility model,
It is within the protection scope of the utility model.The protection scope of the utility model is subject to claims.
Claims (9)
1. a kind of lens distortion center calibration facility, it is characterised in that: including rotating frame, the first driving mechanism, the second driving
Mechanism, first driving mechanism are connect with rotating frame, and first driving mechanism is used to that the rotating frame to be driven to rotate,
Scaling board is equipped in the rotating frame, the scaling board is connect with the rotating frame by shaft, second driving machine
Structure is connect with scaling board, and second driving mechanism is for driving the scaling board to rotate relative to the rotating frame, the mark
The front end of fixed board is equipped with camera lens placement platform, for placing camera lens.
2. lens distortion center as described in claim 1 calibration facility, which is characterized in that the rotating frame bottom is equipped with circle
Camber guide rail, the bottom of the rotating frame are slidably connected with the arc-shaped rail, the center of the arc-shaped rail and institute
The rotary shaft of rotating frame is stated on same straight line, first driving mechanism is for driving the rotating frame in the circle
It is rotated on arc-shaped guide rail.
3. lens distortion center as described in claim 1 calibration facility, which is characterized in that the scaling board includes gridiron pattern
Layer, AR glass and panel light source, the AR glass are fixed on panel light source, and the gridiron pattern layer is pressed together on AR glass.
4. lens distortion center as claimed in claim 3 calibration facility, which is characterized in that the chessboard compartment and AR glass it
Between be equipped with double-sided adhesive.
5. lens distortion center as claimed in claim 4 calibration facility, which is characterized in that the AR glass includes tempered glass
With the AR film being plated on tempered glass.
6. lens distortion center as described in claim 1 calibration facility, which is characterized in that it further include elevating mechanism, the liter
Descending mechanism is used to adjust the height of the camera lens placement platform.
7. lens distortion center as claimed in claim 6 calibration facility, which is characterized in that the elevating mechanism include casing,
Screw rod and handwheel, described sleeve pipe and screw rod run through the camera lens placement platform from vertical direction, and the handwheel is connect with screw rod,
The handwheel drives screw rod rotation, and the screw rod adjusts the height of the camera lens placement platform.
8. lens distortion center as described in claim 1 calibration facility, which is characterized in that camera lens placement platform bottom is set
There is a sliding seat, the sliding seat is for adjusting the camera lens placement platform the distance between to the scaling board.
9. lens distortion center as described in claim 1 calibration facility, which is characterized in that first driving mechanism and second
Driving mechanism includes rotating electric machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822125271.6U CN209000071U (en) | 2018-12-18 | 2018-12-18 | A kind of lens distortion center calibration facility |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822125271.6U CN209000071U (en) | 2018-12-18 | 2018-12-18 | A kind of lens distortion center calibration facility |
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| Publication Number | Publication Date |
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| CN209000071U true CN209000071U (en) | 2019-06-18 |
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ID=66808286
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| Application Number | Title | Priority Date | Filing Date |
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| CN201822125271.6U Active CN209000071U (en) | 2018-12-18 | 2018-12-18 | A kind of lens distortion center calibration facility |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109448063A (en) * | 2018-12-18 | 2019-03-08 | 苏州艾微视图像科技有限公司 | A kind of lens distortion center calibration facility and method |
-
2018
- 2018-12-18 CN CN201822125271.6U patent/CN209000071U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109448063A (en) * | 2018-12-18 | 2019-03-08 | 苏州艾微视图像科技有限公司 | A kind of lens distortion center calibration facility and method |
| WO2020125336A1 (en) * | 2018-12-18 | 2020-06-25 | 苏州艾微视图像科技有限公司 | Lens distortion center calibration device and method |
| US11828674B2 (en) | 2018-12-18 | 2023-11-28 | Suzhou Aview Image Technology Co., Ltd. | Device and method for calibrating lens distortion center |
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