Semi-automatic calibration jig for two-viewpoint naked eye 3D display equipment

Abstract

The utility model discloses a semi-automatic calibration jig for two-viewpoint naked-eye 3D display equipment. The semi-automatic calibration jig comprises a jig body, a camera support, a display screen support, a left camera, a right camera, a left display screen and a right display screen. The jig body comprises a front support, a rear support and a connecting bottom plate, the front support and the rear support are connected through the connecting bottom plate, the front support and the rear support are parallel, and the front support is used for placing display equipment; the rear support is provided with a shooting window, the camera support is installed at the shooting window of the rear support, and the left camera and the right camera are both arranged on the camera support. The display screen supports are arranged on the two sides of the rear support, and the left display screen and the right display screen are arranged on the tops of the display screen supports respectively. The utility model has the advantages that the calibration jig is adopted to unify the viewing distance and the interpupillary distance, the problem of calibration inconsistency caused by the difference of the visual functions of calibration operators is solved, the uniformity of calibration data is improved, and the naked eye 3D viewing effect is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of 3D display, in particular to a semi-automatic calibration fixture for a 2-viewpoint naked-eye 3D display device. Background Art

[0002] After sticking a 3D glass film on the display screen of an electronic device and using dedicated image-taking software to convert ordinary videos into 3D display video files, the ordinary display screen can be converted into a 3D display screen.

[0003] Since the pasting positions of 3D glass films on different mobile phones may be slightly different, in order to achieve the best viewing effect, the image arrangement software needs to be calibrated so that the image arrangement of the display screen matches the pasting position of the 3D glass film.

[0004] The calibration of the existing display screen layout software relies on manual work. During the calibration process, the layout software will display a striped pattern for calibration, and the user is required to manually adjust the layout parameters little by little according to the viewed effect to achieve the best viewing effect.

[0005] However, manual calibration has the following problems: 1. The manual adjustment process is slow and cumbersome, and the calibration speed is slow; 2. Due to the different pupil distances and visual functions of different people, the calibration data is not uniform, which affects the uniformity of the calibration data and the deviation of the software algorithm; 3. The pixel of the front camera of the mobile phone or the front camera of the tablet is not enough, and the assembly tolerance leads to non-uniform calibration data, which affects the uniformity of the calibration data and the deviation of the software algorithm; 4. Due to the different personal visual functions (3D fusion capabilities) of different people, the calibration data is not uniform, which affects the uniformity of the calibration data and the deviation of the software algorithm. Utility Model Content

[0006] In order to solve the inaccuracy problem of the above-mentioned manual calibration of naked-eye 3D display equipment and image arrangement software, a semi-automatic calibration fixture is designed.

[0007] A semi-automatic calibration jig for a 2-viewpoint naked-eye 3D display device, comprising a jig body, a camera bracket, a display bracket, a left camera, a right camera, a left display screen, and a right display screen;

[0008] The fixture body includes a front bracket, a rear bracket and a connecting bottom plate, wherein the front bracket and the rear bracket are connected via the connecting bottom plate, and the front bracket and the rear bracket are parallel, and the front bracket is used to place the display device;

[0009] The rear bracket is provided with a shooting window, the camera bracket is installed at the shooting window of the rear bracket, and the left camera and the right camera are both arranged on the camera bracket;

[0010] The display screen brackets are arranged on both sides of the rear bracket, and the left display screen and the right display screen are arranged on the top of the display screen brackets respectively;

[0011] The left display screen is used to display the images captured by the left camera, and the right display screen is used to display the images captured by the right camera.

[0012] Preferably, the distance between the front bracket and the rear bracket is 31 cm.

[0013] Preferably, an equipment placement plate is provided on the front bracket.

[0014] , A semi-automatic calibration jig for viewpoint naked-eye 3D display devices as described in claim 1, characterized in that the jig body is tiltedly arranged on a display screen bracket.

[0015] Preferably, a stopper is provided on the equipment placement plate.

[0016] Preferably, two camera baffles are provided on the camera bracket, and the side surfaces of the left camera and the right camera are respectively connected to the two camera baffles.

[0017] Preferably, the camera bracket is also provided with two sets of waist holes for fixing the left camera and the right camera.

[0018] Preferably, the bottom of the display screen bracket has a bottom support plate

[0019] The utility model has the advantages that the calibration jig is used to unify the viewing distance and the pupil distance, thereby solving the problem of calibration inconsistency caused by differences in the visual functions of calibration workers, improving the uniformity of the calibration data, and further improving the naked-eye 3D viewing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of the utility model Figure 1 ;

[0021] Figure 2 This is a schematic diagram of the structure of the utility model Figure 2 ;

[0022] Figure 3 It is a side view of the utility model;

[0023] Figure 4 It is a schematic diagram of the structure of the utility model after removing the right display screen bracket.

[0024] In the figure: the fixture body 1, the front bracket 11, the rear bracket 12, the connecting bottom plate 13, the shooting window 14, the equipment placement plate 15, the block 16, the camera bracket 2, the camera baffle 21, the waist hole 22, the display bracket 3, the bottom support plate 31, the left camera 41, the right camera 42, the left display screen 51, and the right display screen 52. DETAILED DESCRIPTION

[0025] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0026] Figure 1 As shown, a semi-automatic calibration jig for a 2-view naked-eye 3D display device includes a jig body 1, a camera bracket 2, a display bracket 3, a left camera 41, a right camera 42, a left display screen 51, and a right display screen 52;

[0027] The fixture body 1 is composed of a front bracket 11, a rear bracket 12 and a connecting bottom plate 13. The front bracket 11 and the rear bracket 12 are connected by the connecting bottom plate 13. The fixture body is formed by bending a metal plate. The front bracket 11 is used to place the display device to be calibrated, and the rear bracket 12 is used to place the camera. In order to control the distance between the camera and the display device to be calibrated, the front bracket 11 and the rear bracket 12 are arranged in parallel.

[0028] A shooting window 14 is provided on the rear bracket 12, and the camera bracket 2 is installed at the shooting window 14 of the rear bracket 12. The left camera 41 and the right camera 42 are both arranged on the camera bracket 2, and the left camera 41 and the right camera 42 shoot the image on the display device to be calibrated through the shooting window 14;

[0029] The display screen bracket 3 is arranged on both sides of the rear bracket 12, and the left display screen 51 and the right display screen 52 are arranged on the top of the display screen bracket 3 respectively;

[0030] The left camera 41 is electrically connected to the left display screen 51 , and the right camera 42 is electrically connected to the right display screen 52 . The left display screen 51 is used to display the image captured by the left camera 41 , and the right display screen 52 is used to display the image captured by the right camera 42 .

[0031] The distance between the front bracket 11 and the rear bracket 12 is 31 cm, thereby ensuring that the distance between the camera and the display device is 31 cm, simulating the distance when the human eye views the screen, and the distance between the left camera 41 and the right camera 42 is a uniform average pupil distance of 6.5 mm; through the above setting, the effect of the human eye viewing the screen is simulated, so that the above-mentioned fixture is used to improve the consistency of the calibration of the image arrangement software.

[0032] A device placement plate 15 is provided on the front bracket 11 for placing the display device to be calibrated;

[0033] Furthermore, the fixture body 1 is tiltedly arranged on the display screen bracket 3. Specifically, the rear bracket 12 is tiltedly fixed on the display screen bracket 3, and the front bracket 11 and the rear bracket 12, so the front bracket 11 is also tilted relative to the display screen bracket 3 and the horizontal plane, so that when the display device is placed on the device placement plate 15, it is also in a tilted state leaning against the front bracket 11 without tipping over.

[0034] In order to prevent the display device from sliding off the device placement plate 15, a stopper 16 is provided on the device placement plate 15 to block the display device. Under the joint action of the device placement plate 15, the front bracket 11 and the stopper 16, the display device is limited and fixed; the stopper 16 is made of EVA material, which is elastic and soft to reduce scratches on the display device.

[0035] Two camera baffles 21 are provided on the camera bracket 2, and the sides of the left camera 41 and the right camera 42 are respectively connected to the two camera baffles 21, so as to ensure that the distance between the cameras is 6.5 mm per capita pupil distance;

[0036] Two sets of waist holes 22 are also provided on the camera bracket 2, which are used to fix the left camera 41 and the right camera 42 respectively, and the camera can be moved at the waist holes 22, so as to adjust the camera and the display device to achieve the optimal distance.

[0037] A bottom support plate 31 is provided at the bottom of the display screen bracket 3. When in use, the bottom support plate 31 is placed on a flat tabletop and serves as the base of the entire calibration fixture.

[0038] Semi-automatic calibration process:

[0039] 1) Placing the display device to be checked: First, place the display device on the device placement plate 15 and between the front bracket 11 and the stopper 16;

[0040] 2) Adjust the camera: adjust the distance between the camera and the display device to 31cm, and the distance between the cameras to 6.5mm;

[0041] 3) Calibration: Open the calibration software on the display device, display the calibration stripe pattern, and the left camera 41 and the right camera 42 simultaneously shoot the display device, and transmit the captured images to the left display screen 51 and the right display screen 52 for display;

[0042] 4) Parameter adjustment: observe the images displayed on the left display screen 51 and the right display screen 52 respectively, and compare them with the expected optimal image. According to the difference between the expected optimal pattern and the actual display pattern, adjust the parameters of the image arrangement software to adjust the actual display pattern to the expected optimal pattern.

[0043] In summary, this calibration is to standardize all external factors of calibration, set the average pupil distance at 6.5mm, fix the viewing distance between personnel and display devices at 31cm, and avoid calibration inconsistencies caused by differences in visual functions of calibration workers by using cameras instead of human eyes.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A semi-automatic calibration jig for a 2-viewpoint naked-eye 3D display device, characterized in that: It comprises a fixture body (1), a camera bracket (2), a display bracket (3), a left camera (41), a right camera (42), a left display screen (51) and a right display screen (52); The fixture body (1) comprises a front bracket (11), a rear bracket (12) and a connecting bottom plate (13), wherein the front bracket (11) and the rear bracket (12) are connected via the connecting bottom plate (13), and the front bracket (11) and the rear bracket (12) are parallel, and the front bracket (11) is used to place a display device; The rear bracket (12) is provided with a shooting window (14), the camera bracket (2) is installed at the shooting window (14) of the rear bracket (12), and the left camera (41) and the right camera (42) are both arranged on the camera bracket (2); The display screen bracket (3) is arranged on both sides of the rear bracket (12), and the left display screen (51) and the right display screen (52) are respectively arranged on the top of the display screen bracket (3); The left display screen (51) is used to display the images captured by the left camera (41), and the right display screen (52) is used to display the images captured by the right camera (42).

2. A semi-automatic calibration jig for a two-viewpoint naked-eye 3D display device as claimed in claim 1, characterized in that: The distance between the front support (11) and the rear support (12) is 31 cm.

3. A semi-automatic calibration jig for a two-viewpoint naked-eye 3D display device as claimed in claim 1, characterized in that: The front bracket (11) is provided with a device placement plate (15).

4. A semi-automatic calibration jig for a 2-viewpoint naked-eye 3D display device as claimed in claim 3, characterized in that: The fixture body (1) is arranged obliquely on the display screen bracket (3).

5. A semi-automatic calibration jig for a 2-viewpoint naked-eye 3D display device as claimed in claim 3, characterized in that: A stopper (16) is provided on the equipment placement plate (15).

6. A semi-automatic calibration jig for a 2-viewpoint naked-eye 3D display device as claimed in claim 1, characterized in that: The camera bracket (2) is provided with two camera baffles (21), and the side surfaces of the left camera (41) and the right camera (42) are respectively connected to the two camera baffles (21).

7. A semi-automatic calibration jig for a 2-viewpoint naked-eye 3D display device as claimed in claim 6, characterized in that: The camera bracket (2) is also provided with two groups of waist holes (22) for fixing the left camera (41) and the right camera (42).

8. The semi-automatic calibration jig for a 2-viewpoint naked-eye 3D display device according to claim 1, characterized in that: The bottom of the display screen bracket (3) is provided with a bottom supporting plate (31).

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