CN107238942B

CN107238942B - Panoramic camera optical axis calibration device

Info

Publication number: CN107238942B
Application number: CN201710517281.1A
Authority: CN
Inventors: 李晓峰
Original assignee: Goertek Inc
Current assignee: Goertek Inc
Priority date: 2017-06-29
Filing date: 2017-06-29
Publication date: 2023-06-30
Anticipated expiration: 2037-06-29
Also published as: CN107238942A

Abstract

The invention relates to a panoramic camera optical axis calibration device, which comprises a box frame, wherein each surface of the box frame is provided with a picture card module and a light source module, the picture card module is arranged on the inner side of the light source module, and the picture card module and the light source module seal the box frame; the box comprises a box body frame, wherein one surface of the box body frame is provided with a passage opening penetrating through the inside of the box body frame, the outside of the box body frame is provided with a baseplate frame, a pushing module is connected to the baseplate frame in a sliding mode, the pushing module is arranged at the position corresponding to the passage opening, and the pushing module is used for sending a camera into the box body frame in a sliding mode. According to the panoramic camera optical axis calibration device, an ineffective area is filled up by an environment building method of full wrapping, the calibration precision of the panoramic camera optical axis is improved, and the quality of a camera is guaranteed.

Description

Panoramic camera optical axis calibration device

Technical Field

The invention relates to the field of panoramic cameras, in particular to a panoramic camera optical axis calibration device.

Background

Today, the technology is continuously advanced, the functions of products are continuously improved, and the requirements on the shooting pictures of the intelligent panoramic camera are continuously improved. In the related test of the optical axis calibration of the intelligent panoramic camera lens, a product needs to be positioned with high precision so as to avoid interference of irrelevant objects in the view angle of the lens. The single-lens angle of the double-lens intelligent panoramic camera is 230 degrees, so that in the construction of a test environment, how to realize more comprehensive visual field, more accurate product positioning and more efficient production are difficult to put in front of us.

At present, in the construction of a test environment for optical axis calibration of a dual-lens intelligent panoramic camera, a half-wrapping mode is generally adopted. This approach facilitates personnel access to and manipulation of the product, but creates a card-free area within the lens view. In the calculation sampling of the optical axis calibration of the dual-lens intelligent panoramic camera, the region cannot provide coordinate points, the calibration precision is affected, and then the shooting picture quality is affected. How to build a more comprehensive view, more accurate product positioning and more efficient production are important conditions for ensuring the product quality and realizing efficient production.

Disclosure of Invention

The invention aims to improve the accuracy of calibrating the optical axis of the panoramic camera and ensure the quality of the camera.

According to one aspect of the invention, there is provided a panoramic camera optical axis calibration device, comprising a box frame, wherein each surface of the box frame is provided with a graphic card module and a light source module, the graphic card module is arranged on the inner side of the light source module, and the graphic card module and the light source module seal the box frame; the box comprises a box body frame, wherein one surface of the box body frame is provided with a passage opening penetrating through the inside of the box body frame, the outside of the box body frame is provided with a baseplate frame, a pushing module is connected to the baseplate frame in a sliding mode, the pushing module is arranged at the position corresponding to the passage opening, and the pushing module is used for sending a camera into the box body frame in a sliding mode.

Preferably, the pushing module comprises a push rod, a fixing seat is arranged on one side, close to the box frame, of the push rod, the fixing seat is used for fixing a camera, a guide rail is arranged on the bottom plate frame, the push rod is connected to the guide rail in a sliding mode, and the push rod can slide to the inside of the box frame along the guide rail.

Preferably, the bottom plate frame is provided with a first positioning column, the first positioning column is located on one side of the guide rail, which is close to the box frame, the bottom of the ejector rod is provided with a first positioning hole, the first positioning hole is arranged on one side, which is far away from the box frame, of the ejector rod, and after the ejector rod slides to the inside of the box frame, the first positioning column is spliced with the first positioning hole.

Preferably, a first bushing is arranged in the first positioning hole, and the first positioning column is inserted into the first positioning hole and clamped in the first bushing.

Preferably, the fixing base is provided with an insertion opening, the insertion opening is used for inserting the camera, the insertion opening is connected with a fixing strap, and the fixing strap is used for fastening the camera in the insertion opening.

Preferably, one end of the insertion opening is provided with a rotating shaft, the opposite end of the insertion opening is provided with a clamping seat, the fixing belt is wound on the rotating shaft, the free end of the fixing belt is provided with a buckle, and after the fixing belt tightens the camera, the buckle is clamped with the clamping seat.

Preferably, the light source module comprises a panel light and a light source fixing frame, the light source fixing frame is arranged on the box body frame, and the panel light is fixed on the light source fixing frame.

Preferably, the graphic card module comprises a graphic card body and a graphic card fixing frame, wherein the graphic card fixing frame is arranged on the box frame, the graphic card fixing frame is arranged on the inner side of the light source fixing frame, and the graphic card body is fixed on the graphic card fixing frame.

Preferably, a plurality of second positioning columns are arranged on the graphic card fixing frame, a plurality of second positioning columns are arranged at intervals, second positioning holes are formed in the graphic card body corresponding to the second positioning columns, and the graphic card body is fixed to the graphic card fixing frame through insertion between the second positioning columns and the second positioning holes.

Preferably, a second bushing is arranged in the second positioning hole, and the second positioning column is inserted into the second positioning hole and clamped in the second bushing.

The invention has the technical effects that the invalid area is filled up by the fully wrapped environment building method, the calibration precision of the optical axis of the panoramic camera is improved, and the quality of the camera is ensured.

Other features of the present invention and its advantages will become apparent from the following detailed description of exemplary embodiments of the invention, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.

Fig. 1 is a schematic structural diagram of a panoramic camera optical axis calibration device of the present invention.

Fig. 2 is a schematic diagram of an internal structure of the panoramic camera optical axis calibration device of the present invention.

Fig. 3 is a schematic structural view of the propulsion module of the present invention.

Fig. 4 is a schematic structural view of the fixing base of the present invention.

Fig. 5 is a schematic structural diagram of a light source module according to the present invention.

Fig. 6 is a schematic structural diagram of the card module of the present invention.

Detailed Description

Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise.

The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses.

Techniques and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate.

In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of exemplary embodiments may have different values.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

Referring to fig. 1 to 6, the panoramic camera optical axis calibration apparatus of the present invention includes a case frame 1. Each surface of the box frame 1 is provided with a graphic card module 2 and a light source module 3, and the graphic card module 2 is arranged on the inner side of the light source module 3, so that the light source module 3 can provide illumination for the graphic card module 2. The box body frame 1 is sealed by the image card module 2 and the light source module 3; one of the faces of the box frame 1 is provided with a passage opening 11 penetrating the inside. The outside of box frame 1 is equipped with the underframe frame 4, and sliding connection has propulsion module 5 on the underframe frame 4, and propulsion module 5 corresponds the position setting of access port 11, and propulsion module 5 is used for the camera to slide and send into the inside of box frame 1. In use, the camera is placed in the propulsion module 5, as shown with reference to fig. 2, the propulsion module 5 slides along the floor frame 4 and feeds the camera into the interior of the housing frame 1. The camera can read the coordinates of the graphic card body 22 on the graphic card module 2, compare the read coordinates with the original coordinates in the computer, and calibrate the optical axis of the camera through the computer program. Because all be equipped with drawing card module 2 on the each face of box frame 1 to the outside of every drawing card module 2 all is equipped with the light source module 3 for its illumination, has realized drawing card module 2 and has wrapped up the camera entirely, has built the environment of full parcel for the camera optical axis calibration. Therefore, the camera can read the coordinates of the image card body 22 in all directions, no invalid area exists, the calibration precision of the optical axis of the camera is improved, and the quality of the camera is ensured. In addition, the environment of full parcel has protected the picture card body, makes it avoid dirty, does benefit to the maintenance, has also reduced the maintenance frequency.

Referring to fig. 3, the pushing module 5 includes a push rod 51, and the push rod 51 is provided with a fixing seat 6 at a side close to the case frame 1, where the fixing seat 6 is used for fixing the camera. The floor frame 4 is provided with a guide rail 41, and the ejector rod 51 is slidably connected to the guide rail 41 and is slidable along the guide rail 41 into the box frame 1. In this way, after the camera is fixed to the fixing base 6, the driving mechanism can be used to drive the jack 51 to slide along the guide rail 41, and further slide and feed the camera into the inside of the cabinet frame 1.

Preferably, the floor frame 4 is provided with a first positioning column 42, and the first positioning column 42 is located on one side of the guide rail 41 close to the box frame 1. The bottom of the ejector pin 51 is provided with a first positioning hole (not shown in the drawing) provided at a side away from the tank frame 1. As the ejector rod 51 slides and enters the inside of the box frame 1, the first positioning hole at the bottom of the ejector rod 51 approaches the first positioning column 42, and when the camera is sent to a certain position inside the box frame 1, the first positioning column 42 is inserted into the first positioning hole. At this time, the camera stays at the position and is kept still so as to complete subsequent operations of coordinate reading and the like, and the stability of the camera stay can be ensured through the plugging of the first positioning column 42 and the first positioning hole. It is also possible to preselect the stay position of the camera in the housing frame at last, and then control the camera to reach this position by plugging the first positioning post 42 with the first positioning hole.

Further, a first bushing is provided in the first positioning hole, and the first positioning post is inserted into the first positioning hole and is clamped in the first bushing (not shown in the figure).

Referring to fig. 4, the holder 6 is provided with an insertion port 61, and the insertion port 61 is used for inserting the camera 7. The insertion port 61 is connected with a fixing band 62, and the fixing band 62 is used for fastening the camera 7 in the insertion port. In this way, after the camera 7 is inserted into the insertion port 61, the camera can be fastened by the fixing strap 62. The fixing belt 62 can fasten the camera 7 between the two lenses without shielding the lenses, so that the coordinate reading of the camera 7 on the graphic card body is not affected, and the calibration precision of the camera lenses is ensured.

Preferably, one end of the insertion port 61 is provided with a rotation shaft 63, and the opposite end of the insertion port 61 is provided with a clamping seat. The fixing belt 62 is wound on the rotating shaft 63, and the free end of the fixing belt is provided with a buckle. When it is necessary to tie the camera, the free end of the fixing strap can be pulled out of the spindle 63 and wrapped around the camera 7; when the free end of the fixing strap reaches the opposite end of the insertion opening 61, the buckle is engaged with the holder, thereby fastening the camera 7. Of course, the fixing method of the fixing band to the camera is not limited thereto, and the fixing band 62 may be made of an elastic material, both ends of the fixing band 62 may be fixed to the insertion port 61, the fixing band 72 may be elastically stretched when the camera 7 is inserted, and the fixing band 62 may be loosened after the camera 7 is inserted, and the fixing band 62 may be elastically contracted to tighten the camera 7.

Referring to fig. 5, the light source module 3 includes a panel lamp 32 and a light source holder 31, the light source holder 31 is provided on the cabinet frame 1, and the panel lamp 32 is fixed to the light source holder 31. The panel lamp 32 is used as a light source for illumination, so that each area of the graphic card body can be illuminated, and the camera can read the coordinates conveniently.

Referring to fig. 6, the graphic card module 2 includes a graphic card body 22 and a graphic card holder 21, the graphic card holder 21 is provided on the housing frame 1, and the graphic card body 22 is fixed on the graphic card holder 21. The card holder 21 is disposed inside the light source holder 31 to ensure that the panel lamp 32 can illuminate the card body 22.

Preferably, the card holder 21 is provided with a plurality of second positioning columns, and the plurality of second positioning columns are arranged at intervals. Wherein, the reference columns can also be arranged on the picture card fixing frame at equal intervals. The second positioning hole 23 is arranged on the picture card body 22 corresponding to the second positioning column, and the picture card body is fixed on the picture card fixing frame through the insertion connection between the second positioning column and the second positioning hole 23. The second positioning column and the second positioning hole are inserted and connected, so that the positioning and fixing functions can be achieved, and the graphic card body is flatly fixed on the graphic card fixing frame.

Further, a second bushing is arranged in the second positioning hole 23, and the second positioning column is inserted into the second positioning hole and clamped in the second bushing.

While certain specific embodiments of the invention have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims

1. The panoramic camera optical axis calibration device is characterized by comprising a box frame (1), wherein each surface of the box frame (1) is provided with a graphic card module (2) and a light source module (3), the graphic card module (2) is arranged on the inner side of the light source module (3), and the graphic card module (2) and the light source module (3) seal the box frame (1); a passage opening (11) penetrating through the inside of the box frame (1) is formed in one face of the box frame (1), a baseplate frame (4) is arranged on the outer side of the box frame (1), a pushing module (5) is connected to the baseplate frame (4) in a sliding mode, the pushing module (5) is arranged at a position corresponding to the passage opening (11), and the pushing module (5) is used for enabling a camera to be sent into the box frame (1) in a sliding mode; the camera reads the coordinates of the graphic card body (22) on the graphic card module (2), compares the read coordinates with the original coordinates in the computer, and calibrates the optical axis of the camera through a computer program.

2. Panoramic camera optical axis calibration device according to claim 1, characterized in that the pushing module (5) comprises a push rod (51), the push rod (51) is provided with a fixing seat (6) at one side close to the box frame (1), the fixing seat (6) is used for fixing the camera, the bottom plate frame (4) is provided with a guide rail (41), the push rod (51) is slidably connected to the guide rail (41), and can slide to the inside of the box frame (1) along the guide rail (41).

3. The panoramic camera optical axis calibration device according to claim 2, wherein a first positioning column (42) is arranged on the bottom plate frame (4), the first positioning column (42) is located on one side of the guide rail close to the box frame (1), a first positioning hole is arranged at the bottom of the ejector rod (41), the first positioning hole is arranged on one side far away from the box frame (1), and after the ejector rod (51) slides to the inside of the box frame, the first positioning column (42) is spliced with the first positioning hole.

4. A panoramic camera optical axis calibration device as recited in claim 3 wherein a first bushing is provided in said first locating hole, said first locating post being inserted into said first locating hole and clamped in said first bushing.

5. Panoramic camera optical axis calibration device according to any one of claims 2 to 4, characterized in that the holder (6) is provided with an insertion opening (61), the insertion opening (61) being for inserting a camera, the insertion opening (61) being connected with a fixing strap (62), the fixing strap (62) being for fastening the camera in the insertion opening.

6. The panoramic camera optical axis calibration device of claim 5, wherein one end of the insertion port (61) is provided with a rotating shaft (63), the opposite end of the insertion port (61) is provided with a clamping seat, the fixing belt (62) is wound on the rotating shaft (63), the free end of the fixing belt (62) is provided with a buckle, and the buckle is clamped with the clamping seat after the fixing belt (62) tightens the camera.

7. The panoramic camera optical axis calibration device of any one of claims 1 to 4, wherein the light source module (3) comprises a panel light (32) and a light source mount (31), the light source mount (31) being disposed on the housing frame (1), the panel light (32) being fixed on the light source mount (31).

8. The panoramic camera optical axis calibration device of claim 7, wherein the graphics card module (2) comprises a graphics card body (22) and a graphics card holder (21), the graphics card holder (21) is disposed on the case frame (1), the graphics card holder (21) is disposed inside the light source holder (31), and the graphics card body (22) is fixed on the graphics card holder (21).

9. The panoramic camera optical axis calibration device according to claim 8, wherein a plurality of second positioning columns are arranged on the graphic card fixing frame (21), a plurality of second positioning columns are arranged at intervals, a second positioning hole (23) is formed in the graphic card body (22) corresponding to the second positioning columns, and the graphic card body is fixed on the graphic card fixing frame through insertion connection between the second positioning columns and the second positioning holes.

10. Panoramic camera optical axis calibration device according to claim 9, characterized in that a second bushing is arranged in the second positioning hole (23), and the second positioning post is inserted into the second positioning hole and clamped in the second bushing.