CN221043013U - Integrated internal reference calibration equipment - Google Patents
Integrated internal reference calibration equipment Download PDFInfo
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- CN221043013U CN221043013U CN202322857742.3U CN202322857742U CN221043013U CN 221043013 U CN221043013 U CN 221043013U CN 202322857742 U CN202322857742 U CN 202322857742U CN 221043013 U CN221043013 U CN 221043013U
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- 230000000007 visual effect Effects 0.000 claims description 3
- 230000000712 assembly Effects 0.000 abstract description 8
- 238000000429 assembly Methods 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 11
- 238000007599 discharging Methods 0.000 description 3
- 238000005286 illumination Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
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- 238000013461 design Methods 0.000 description 1
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Abstract
The utility model aims to provide integral internal parameter calibration equipment which can be compatible with camera parameter calibration of various angles of view. The automatic fish-eye device comprises a product jig and a camera bellows, wherein a rotating platform is arranged in the camera bellows, a plurality of switching assemblies are uniformly distributed on the rotating platform, a plurality of product jigs are arranged at the movable ends of the plurality of switching assemblies in a one-to-one correspondence mode, a plurality of drawing cards and a fish-eye box are further arranged in the camera bellows, and the switching assemblies drive the product jigs to switch between the drawing cards and the fish-eye box. The method is applied to the technical field of camera internal parameter calibration.
Description
Technical Field
The utility model is applied to the technical field of camera internal parameter calibration, and particularly relates to integrated internal parameter calibration equipment.
Background
Along with development and popularization of an intelligent driving system of an automobile, the function borne by a vehicle-mounted camera is not a traditional driving record any more, and the vehicle-mounted camera system needs to analyze and judge environmental information according to pictures captured by the camera. The camera and the surrounding environment are required to establish an accurate position relationship, and the calibration of the camera parameters is a very critical link in image measurement or machine vision application, and the accuracy of the calibration result and the stability of the algorithm directly influence the accuracy of the working generation result of the camera.
The parameter calibration of the camera utilizes a calibration model to shoot a calibration checkerboard pattern within the depth of field distance of the product, extracts angular point position information to perform camera internal reference calculation, and finally outputs an internal reference result and a distortion coefficient.
The traditional parameter calibration equipment is generally only compatible with the detection of camera products at fixed angles or at different angles in a small range, the compatibility is poor, and manufacturers need to replace the calibration equipment when detecting cameras with different specifications, so that the detection cost is greatly increased.
The problem can be well solved if the parameter calibration equipment compatible with cameras of different specifications can be developed.
Disclosure of utility model
The utility model aims to solve the technical problem of overcoming the defects of the prior art and providing integrated internal reference calibration equipment which can be compatible with camera parameter calibration of various angles of view.
The technical scheme adopted by the utility model is as follows: the automatic fish-eye device comprises a plurality of product jigs and a camera bellows, wherein a rotating platform is arranged in the camera bellows, a plurality of switching assemblies are uniformly distributed on the rotating platform, the product jigs are arranged at the movable ends of the switching assemblies in a one-to-one correspondence mode, a plurality of drawing cards and a fish-eye box are further arranged in the camera bellows, and the switching assemblies drive the product jigs to switch between the drawing cards and the fish-eye box.
According to the scheme, the rotating platform is connected with the product jigs, so that multi-station operation is realized, and the synchronous feeding, discharging and detecting are facilitated. The switching assembly is used for driving the product jig to switch between the picture card and the fish-eye box, so that the field of view of a product to be tested is moved to the picture card when the parameters of the small-angle camera are calibrated, and the camera test with the field of view angle smaller than 180 degrees is realized; when the parameters of the large-angle camera are calibrated, the switching component moves the field of view of the product to be measured to the fish-eye box, so that the parameters of the camera with the field of view angle larger than 180 degrees are calibrated. And furthermore, the device is compatible with testing of products with different specifications through one device, meanwhile, the calibration device is compact in structure and small in occupied space, and the model changing cost and the site cost are effectively reduced.
One preferable scheme is, the switching assembly includes bottom support and upset support, the bottom support cooperation sets up on the rotating platform, the upset support rotates and sets up on the bottom support, be provided with on the bottom support and drive upset support pivoted drive unit, the product tool sets up on the upset support, the drawing card is located on the horizontal direction of rotating platform's the position of detecting, the fish-eye box is located rotating platform's the top of detecting position, drive unit drives upset support rotates, and then drives the visual field of the product of awaiting measuring is in the drawing card with switch between the fish-eye box.
The switching assembly further comprises a driving motor and a movable plate, wherein the movable plate is in sliding fit with the inner side of the overturning bracket through a linear guide rail, the driving motor is fixedly arranged on the overturning bracket, and the movable plate is in transmission connection with the movable end of the driving motor.
Preferably, the switching assembly further comprises a rotating motor, the bottom bracket is in rotating fit on the rotating platform, and the rotating motor is in transmission connection with the bottom bracket.
The product jig comprises a base and a clamping cover, wherein the base is matched with the clamping cover to clamp a product to be tested, and the base is arranged at the movable end of the switching assembly through a fine adjustment platform.
In one preferred scheme, a first horizontal moving mechanism and a vertical moving mechanism are further arranged in the camera bellows, the picture card is arranged on the movable end of the first horizontal moving mechanism, and the fish-eye box is arranged on the movable end of the vertical moving mechanism.
The distance increasing component comprises a distance increasing mirror and a second horizontal moving mechanism, wherein the distance increasing mirror is arranged at the movable end of the second horizontal moving mechanism, and the distance increasing mirror is matched with the switching component.
The preferable scheme is that a feeding port is arranged on the side wall of the camera bellows.
In a preferred scheme, the edge of the picture card is provided with an illuminating lamp.
Drawings
FIG. 1 is a schematic perspective view of a camera bellows according to the present utility model;
FIG. 2 is a first perspective view of the present utility model;
FIG. 3 is a second perspective view of the present utility model;
FIG. 4 is an enlarged view of portion A of FIG. 3;
FIG. 5 is a third perspective view of the present utility model;
Fig. 6 is an enlarged view of a portion B in fig. 5.
Detailed Description
Embodiment one:
As shown in fig. 1 to 6, in this embodiment, the present utility model includes two sets of product jigs 1 and a camera bellows 2, a rotating platform 3 is disposed in the camera bellows 2, two sets of switching assemblies 4 are symmetrically disposed on the rotating platform 3, the two sets of product jigs 1 are correspondingly disposed on the movable ends of the two sets of switching assemblies 4, and a graphic card 5 and a fish-eye box 6 are also disposed in the camera bellows 2.
As shown in fig. 4 and 6, in this embodiment, the switching component 4 includes a bottom bracket 401, a turnover bracket 402, and a rotating motor 405, where the bottom bracket 401 is rotationally matched with the rotating platform 3, the rotating motor 405 is fixed on the rotating platform 3 and is in transmission connection with the bottom bracket 401, the turnover bracket 402 is rotationally arranged on the bottom bracket 401, a driving unit 403 driving the turnover bracket 402 to rotate is arranged on the bottom bracket 401, the product fixture 1 is arranged on the turnover bracket 402, the graphic card 5 is located in a horizontal direction of a detection position of the rotating platform 3, the fish-eye box 6 is located above the detection position of the rotating platform 3, and the driving unit 403 drives the turnover bracket 402 to rotate, so as to drive a field of view of a product to be detected to be switched between the graphic card 5 and the fish-eye box 6. The driving unit 403 drives the turnover bracket 402 to switch between a horizontal state and a vertical state, so that the product jig is aligned to the graphic card 5 and the fish-eye box 6 in different states, and the device selects a detection tool according to the product specification. The chart 5 is a chart board provided with a checkerboard or a lattice, the inner wall of the fish-eye box 6 is provided with a checkerboard pattern, calibration points and the like, and the image of the product to be detected is analyzed by the upper computer after the image is captured, so that the parameters of the product to be detected are determined.
As shown in fig. 6, specifically, the turnover bracket 402 is U-shaped, two ends of the turnover bracket 402 are respectively connected with two ends of the bottom bracket 401 in a rotating manner, the driving unit 403 is a motor, the driving unit 403 is fixed on the bottom bracket 401, and a movable end of the driving unit 403 is in transmission connection with the turnover bracket 402 through a gear set. The product fixture 1 is located in the middle of the turnover bracket 402. The structure of the rear bracket can be prevented from rotating through the design arranged in the middle, and the view field of the product to be detected is shielded.
As shown in fig. 4, in this embodiment, the switching component 4 further includes a rotating motor 405, the bottom bracket 401 is rotationally matched with the rotating platform 3, the rotating motor 405 is in transmission connection with the bottom bracket 401, and the rotating motor 405 drives the bottom bracket 401 to rotate, so that gestures of different fields of view are provided during testing, and detection requirements of products of different specifications are compatible.
In this embodiment, the product fixture 1 includes base and clamping lid, the base with clamping lid snap fit presss from both sides tightly to the product that awaits measuring, the base passes through fine setting platform 101 setting is in the expansion end of switching component 4, through setting up fine setting platform 101 carries out the position adjustment of product fixture 1, and then adjusts the visual field area of the product that awaits measuring, and then acquires more test data and improve the reliability that the product detected.
As shown in fig. 2, in this embodiment, a first horizontal moving mechanism 201 and a vertical moving mechanism 202 are further disposed in the camera bellows 2, the graphics card 5 is disposed on the movable end of the first horizontal moving mechanism 201, and the fish-eye box 6 is disposed on the movable end of the vertical moving mechanism 202. By arranging the first horizontal moving mechanism 201 and the vertical moving mechanism 202, the relative distance between the picture card 5, the fish-eye box 6 and the product jig 1 is adjusted, and further the test of cameras with different depth of field is satisfied.
As shown in fig. 5 and 6, a distance increasing component is disposed between the rotating platform 3 and the graphic card 5, the distance increasing component includes a distance increasing mirror 7, a jacking component and a second horizontal moving mechanism 203, the distance increasing mirror 7 is disposed on a movable end of the second horizontal moving mechanism 203 through the jacking component, and the distance increasing mirror 7 is matched with the switching component 4. The jacking assembly comprises a movable frame and a jacking motor, a plurality of guide posts are arranged at the movable end of the second horizontal moving mechanism 203, the movable frame is in sliding fit with the guide posts, the output end of the jacking motor is provided with a screw rod in transmission fit with the movable frame, and the movable frame is driven to lift through the screw rod so as to drive the distance-increasing mirror 7 to change positions. The distance increasing mirror 7 is used for being matched with the image card 5 to simulate far-field imaging, the second horizontal moving mechanism 203 drives the distance increasing mirror 7 to move between the rotating platform 3 and the image card 5, so that different far-field effects are provided, camera testing requirements of different specifications are met, and the equipment compatibility range is improved.
As shown in fig. 1, a loading opening 204 is provided on a side wall of the camera bellows 2, and the loading opening 204 is provided with a shielding door structure, and the shielding door structure is used for blocking light and opening for an operator or an external manipulator to perform loading and unloading operations during loading and unloading.
As shown in fig. 2, an illumination lamp 501 is disposed at the edge of the graphic card 5, and the illumination lamp 501 is used for providing light for the graphic card 5.
As shown in fig. 2, the rotating platform 3 includes a turntable and a turntable motor, and the turntable is in transmission connection with an output end of the turntable motor, so that the two groups of product jigs 1 are driven to switch between a testing position and an up-down material position during testing.
The working principle of the utility model is as follows:
when the detection is carried out, an operator or an external manipulator carries out the feeding of the camera to be detected, and the camera to be detected is clamped and fixed on the product jig 1.
After the feeding is completed, the rotating platform 3 drives the camera to be tested to a test position, the switching assembly 4 drives the product jig 1 to turn over according to the type of the product input during clamping, so that the field of view of the camera to be tested covers a corresponding test pattern, the camera to be tested is electrically connected with the camera to be tested through the product jig 1, an image captured by the camera to be tested is acquired, and the image is analyzed by the upper computer so as to acquire parameters of the camera product.
After the test is completed, the rotating platform 3 drives the camera to return to the feeding and discharging station for discharging.
Embodiment two:
The present embodiment is different from the first embodiment in that:
The switching component 4 further comprises a driving motor and a movable plate 404, the movable plate 404 is in sliding fit with the inner side of the overturning bracket 402 through a linear guide rail, the driving motor is fixedly arranged on the overturning bracket 402, the movable plate 404 is in transmission connection with the movable end of the driving motor, and the product fixture 1 is arranged on the movable plate 404.
The driving motor drives the movable plate 404 to adjust the position of the camera to be measured, and the first horizontal moving mechanism 201 and the vertical moving mechanism 202 are matched to provide a more comprehensive detection interval, so that the camera with more specifications can be adapted to perform parameter calibration.
While the embodiments of this utility model have been described in terms of practical aspects, they are not to be construed as limiting the meaning of this utility model, and modifications to the embodiments and combinations with other aspects thereof will be apparent to those skilled in the art from this description.
Claims (9)
1. Integral type internal reference calibration equipment, it includes a plurality of product tool (1) and camera bellows (2), its characterized in that: be provided with in camera bellows (2) and rotate platform (3), evenly distributed has a plurality of switching components (4) on rotating platform (3), a plurality of product tool (1) one-to-one sets up a plurality of on the activity end of switching components (4), still be provided with a plurality of picture cards (5) and fish-eye case (6) in camera bellows (2), switching components (4) drive product tool (1) are in switch between picture card (5) and fish-eye case (6).
2. The integrated internal reference calibration device of claim 1, wherein: the switching assembly (4) comprises a bottom support (401) and a turnover support (402), the bottom support (401) is matched with and arranged on the rotating platform (3), the turnover support (402) is rotationally arranged on the bottom support (401), a driving unit (403) for driving the turnover support (402) to rotate is arranged on the bottom support (401), the product jig (1) is arranged on the turnover support (402), the picture card (5) is positioned in the horizontal direction of the detection position of the rotating platform (3), the fish-eye box (6) is positioned above the detection position of the rotating platform (3), and the driving unit (403) drives the turnover support (402) to rotate so as to drive the visual field of a product to be detected to be switched between the picture card (5) and the fish-eye box (6).
3. The integrated internal reference calibration device of claim 2, wherein: the switching assembly (4) further comprises a driving motor and a movable plate (404), the movable plate (404) is in sliding fit with the inner side of the overturning bracket (402) through a linear guide rail, the driving motor is fixedly arranged on the overturning bracket (402), and the movable plate (404) is in transmission connection with the movable end of the driving motor.
4. The integrated internal reference calibration device of claim 2, wherein: the switching assembly (4) further comprises a rotating motor (405), the bottom bracket (401) is in rotating fit on the rotating platform (3), and the rotating motor (405) is in transmission connection with the bottom bracket (401).
5. The integrated internal reference calibration device of claim 1, wherein: the product jig (1) comprises a base and a clamping cover, wherein the base is matched with the clamping cover to clamp a product to be tested, and the base is arranged at the movable end of the switching assembly (4) through a fine adjustment platform (101).
6. The integrated internal reference calibration device of claim 1, wherein: still be provided with first horizontal movement mechanism (201) and vertical movement mechanism (202) in camera bellows (2), picture card (5) set up on the activity end of first horizontal movement mechanism (201), fish-eye case (6) set up the activity end of vertical movement mechanism (202).
7. The integrated internal reference calibration device of claim 1, wherein: the distance increasing component is arranged between the rotating platform (3) and the graphic card (5) and comprises a distance increasing mirror (7) and a second horizontal moving mechanism (203), the distance increasing mirror (7) is arranged at the movable end of the second horizontal moving mechanism (203), and the distance increasing mirror (7) is matched with the switching component (4).
8. The integrated internal reference calibration device of claim 1, wherein: a feeding port (204) is arranged on the side wall of the camera bellows (2).
9. The integrated internal reference calibration device of claim 1, wherein: an illuminating lamp (501) is arranged at the edge of the graphic card (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322857742.3U CN221043013U (en) | 2023-10-24 | 2023-10-24 | Integrated internal reference calibration equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322857742.3U CN221043013U (en) | 2023-10-24 | 2023-10-24 | Integrated internal reference calibration equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221043013U true CN221043013U (en) | 2024-05-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322857742.3U Active CN221043013U (en) | 2023-10-24 | 2023-10-24 | Integrated internal reference calibration equipment |
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| Country | Link |
|---|---|
| CN (1) | CN221043013U (en) |
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2023
- 2023-10-24 CN CN202322857742.3U patent/CN221043013U/en active Active
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