Automatic calibration of naked eye 3D display system and control method thereof

Abstract

The present invention discloses an automatic calibration naked-eye 3D display system and a control method thereof, wherein the automatic calibration naked-eye 3D display system comprises a calibration plate mobile device, a naked-eye 3D display device and a calibration main control device; the calibration plate mobile device comprises a calibration plate and a calibration plate moving driving mechanism, the calibration plate moving driving mechanism is connected to the calibration plate and can drive the calibration plate to move; the naked-eye 3D display device is a naked-eye 3D display device to be calibrated, and the mapping relationship between the display grating parameters and the spatial position is determined according to the calibration algorithm and the system; the calibration main control device is connected to the naked-eye 3D display device, controls the naked-eye 3D display device to change the grating parameters, and searches for the optimal grating parameters that match the depth of the calibration plate. The automatic calibration naked-eye 3D display system and the control method thereof proposed by the present invention can ensure the accuracy of the grating visual area position calibration and meet the requirements of the naked-eye 3D display.

Description

Technical Field

[0001] The present invention belongs to the technical field of 3D display, and relates to a display system, and in particular to an automatic calibration naked-eye 3D display system and a control method thereof. Background Art

[0002] With the development and progress of science and technology, people's requirements for the clarity and comfort of watching naked-eye 3D devices are gradually increasing. The existing naked-eye 3D display system can no longer meet people's requirements today.

[0003] In view of this, a system for automatically calibrating naked-eye 3D displays is designed to meet the requirement of accurately calculating the mapping relationship between the world coordinate system position obtained by the camera and the grating parameters. Summary of the invention

[0004] The present invention provides an automatic calibration system for a naked-eye 3D display and a control method, which can ensure the accuracy of the calibration of the position of a grating visible area and meet the requirements of a naked-eye 3D display.

[0005] To solve the above technical problem, according to one aspect of the present invention, the following technical solution is adopted:

[0006] An automatic calibration naked eye 3D display system, the automatic calibration naked eye 3D display system comprising a calibration board mobile device, a naked eye 3D display device and a calibration main control device;

[0007] The calibration plate moving device comprises a calibration plate, a linear slide rail, and a servo motor; the servo motor controls the linear slide rail to move in the z-axis direction, thereby driving the calibration plate to move;

[0008] The naked-eye 3D display device includes a naked-eye 3D stereoscopic display panel and a human eye detection camera module for human eye detection; the naked-eye 3D display device is a naked-eye 3D display device to be calibrated, and the mapping relationship between the display grating parameters and the spatial position needs to be determined according to the calibration algorithm and the system;

[0009] The calibration main control device includes a host device running a calibration program and a display, and the host device is connected to the display;

[0010] The calibration master control device is a device that runs the calibration program, is connected to the naked-eye 3D display device, controls the naked-eye 3D display device to change the grating parameters, and searches for the optimal grating parameters that match the depth of the calibration plate;

[0011] The calibration main control device is connected to the calibration plate moving device at the same time, and controls the servo motor to move the calibration plate on the slide rail so that the calibration plate reaches the specified depth position;

[0012] When placing the calibration plate and the naked-eye 3D stereoscopic display panel, the naked-eye 3D stereoscopic display panel and the calibration plate need to remain parallel, and the center point position of the naked-eye 3D stereoscopic display panel and the center point position of the calibration plate remain aligned, and the distance between the two is within the effective viewing range of the naked-eye 3D.

[0013] As an embodiment of the present invention, the host device is connected to the servo motor of the calibration plate moving device, controls the relative movement and absolute movement of the calibration plate, is connected to the 3D display module of the naked-eye 3D display, and traverses the output to find the optimal parameters.

[0014] As an implementation mode of the present invention, during the calibration process, the red-green / red-blue interval image on the calibration plate is acquired by the depth camera of the naked-eye 3D display device, which is used to calibrate the mapping relationship between the camera and the visible area of ​​the calibration plate.

[0015] As an embodiment of the present invention, the naked-eye 3D display device is fixed in position and does not move. The image of the calibration plate is obtained by a depth camera device, and the coordinates of the visible area in the camera coordinate system are calculated to form an accurate mapping relationship with the human eye position obtained by human eye detection.

[0016] As an implementation manner of the present invention, the linear slide rail module in the calibration plate moving device only moves in the depth z-axis direction.

[0017] As an implementation mode of the present invention, the calibration plate is fixed on the slide rail by a bracket to ensure that it is perpendicular to the desktop.

[0018] According to another aspect of the present invention, the following technical solution is adopted: an automatic calibration system for naked-eye 3D display, characterized in that the automatic calibration system for naked-eye 3D display comprises a calibration board mobile device, a naked-eye 3D display device and a calibration main control device;

[0019] The calibration plate moving device comprises a calibration plate and a calibration plate moving driving mechanism, wherein the calibration plate moving driving mechanism is connected to the calibration plate and can drive the calibration plate to move;

[0020] The naked-eye 3D display device is a naked-eye 3D display device to be calibrated, and a mapping relationship between display grating parameters and spatial positions is determined according to a calibration algorithm and a system;

[0021] The calibration main control device is connected to the naked-eye 3D display device, controls the naked-eye 3D display device to change the grating parameters, and searches for the optimal grating parameters that match the depth of the calibration plate.

[0022] As an implementation mode of the present invention, the calibration main control device is simultaneously connected to the calibration plate moving device, and controls the servo motor to move the calibration plate on the slide rail so that the calibration plate reaches a specified depth position.

[0023] As an embodiment of the present invention, when placing the calibration plate and the naked-eye 3D stereoscopic display panel of the naked-eye 3D display device, the naked-eye 3D stereoscopic display panel and the calibration plate need to remain parallel, and the center point position of the naked-eye 3D stereoscopic display panel and the center point position of the calibration plate remain aligned, and the distance between the two is within the effective viewing range of the naked-eye 3D.

[0024] According to another aspect of the present invention, the following technical solution is adopted: a control method for automatically calibrating a naked-eye 3D display system, the control method comprising:

[0025] Step S1, program start, initialize the calibration plate moving module, naked eye 3D display module, and calibrate the main control module;

[0026] Step S2, controlling the linear slide rail to move the calibration plate to the calibration position, and ensuring that the center of the naked-eye 3D display is aligned with the calibration plate;

[0027] Step S3, obtaining the red-blue / red-green image on the calibration plate according to the depth camera module of the naked-eye 3D display, and determining the mapping relationship between the depth visible area position of the current calibration plate and the grating parameters;

[0028] Step S4, the calibration master control device sends a movement signal to the servo motor of the calibration board moving device through the port, sets the relative movement distance, and starts the calibration of the next distance;

[0029] Step S5: Calibrate the main control device and repeat the above process until the visible area of ​​the naked-eye 3D device is determined and the corresponding parameter mapping file is output.

[0030] The beneficial effect of the present invention is that the automatic calibration system and control method of the naked-eye 3D display proposed by the present invention can ensure the accuracy of the calibration of the grating visible area position and meet the requirements of the naked-eye 3D display. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 Schematic diagram of the composition of a system for automatically calibrating a naked-eye 3D display in one embodiment of the present invention.

[0032] Figure 2 Flow chart of a method for automatically calibrating a naked-eye 3D display system control method according to an embodiment of the present invention. DETAILED DESCRIPTION

[0033] The preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0034] In order to further understand the present invention, preferred embodiments of the present invention are described below in conjunction with examples. However, it should be understood that these descriptions are only for further illustrating the features and advantages of the present invention, rather than limiting the claims of the present invention.

[0035] The description in this section is only for several typical embodiments, and the present invention is not limited to the scope of the embodiments. The same or similar prior art means and some technical features in the embodiments are mutually replaced within the scope of the present invention.

[0036] The description of the steps in each embodiment in the specification is only for the convenience of explanation, and the implementation of the present application is not limited by the order of the steps. The "connection" in the specification includes both direct connection and indirect connection.

[0037] The present invention discloses an automatic calibration system for naked eye 3D display. Figure 1 FIG. 1 is a schematic diagram of a system for automatically calibrating a naked-eye 3D display according to an embodiment of the present invention; please refer to FIG. Figure 1 The system includes: a calibration board mobile device 11, a naked-eye 3D display device 12, and a calibration main control device 13; the calibration main control device 13 is connected to the calibration board mobile device 11 and the naked-eye 3D display device 12 to implement the entire calibration process.

[0038] The calibration plate moving device 11 includes a calibration plate and a calibration plate moving driving mechanism, wherein the calibration plate moving driving mechanism is connected to the calibration plate and can drive the calibration plate to move; the naked-eye 3D display device 12 is a naked-eye 3D display device to be calibrated, and the mapping relationship between the display grating parameters and the spatial position is determined according to the calibration algorithm and the system; the calibration main control device 13 is connected to the naked-eye 3D display device 12, controls the naked-eye 3D display device 12 to change the grating parameters, and searches for the optimal grating parameters that match the depth of the calibration plate.

[0039] like Figure 1 As shown, in one embodiment of the present invention, the calibration plate moving device 11 includes a calibration plate 111, a linear slide rail 112, and a servo motor 113; the servo motor controls the linear slide rail to move in the z-axis direction, thereby driving the calibration plate to move.

[0040] The naked-eye 3D display device 12 includes a naked-eye 3D stereoscopic display panel 121 and a human eye detection camera module 122 for human eye detection; the naked-eye 3D display device 12 is a naked-eye 3D display device to be calibrated, and the mapping relationship between the display grating parameters and the spatial position needs to be determined according to the calibration algorithm and system.

[0041] The calibration main control device 13 includes a host device 132 running a calibration program and a display 131, wherein the host device 132 is connected to the display 131; the calibration main control device 13 is a device running a calibration program, and the calibration main control device 13 is connected to the naked-eye 3D display device 12, controls the naked-eye 3D display device 12 to change the grating parameters, and searches for the optimal grating parameters that match the depth of the calibration plate.

[0042] The calibration main control device 13 is connected to the calibration plate moving device 11 at the same time, and controls the servo motor to move the calibration plate on the slide rail so that the calibration plate reaches a specified depth position.

[0043] When placing the calibration plate 111 and the naked-eye 3D stereoscopic display panel 121, the naked-eye 3D stereoscopic display panel 121 and the calibration plate 111 need to remain parallel, and the center point position of the naked-eye 3D stereoscopic display panel 121 remains aligned with the center point position of the calibration plate 111, and the distance between the two is within the effective viewing range of the naked-eye 3D.

[0044] The above is the composition of the automatic calibration naked eye 3D display system. The present invention also discloses a control method of the automatic calibration naked eye 3D display system. Figure 2 This is a flow chart of a method for automatically calibrating a naked-eye 3D display system control method according to an embodiment of the present invention; please refer to Figure 2 , the specific steps of the control method are as follows:

[0045] [Step S1] The program starts, initializes the calibration plate moving module, the naked eye 3D display module, and calibrates the main control module;

[0046] [Step S2] Control the linear slide rail to move the calibration plate to the calibration position, and ensure that the center of the naked-eye 3D display is aligned with the calibration plate;

[0047] [Step S3] Obtain the red-blue / red-green image on the calibration plate according to the depth camera module of the naked-eye 3D display, and determine the mapping relationship between the depth visible area position of the current calibration plate and the grating parameters;

[0048] [Step S4] The calibration master control device sends a movement signal to the servo motor of the calibration board moving device through the port, sets the relative movement distance, and starts the calibration of the next distance;

[0049] [Step S5] The calibration master device repeats the above process until the visible area of ​​the naked-eye 3D device is determined and the corresponding parameter mapping file is output.

[0050] In summary, the present invention proposes an automatic calibration system for naked-eye 3D display and a control method thereof, which can ensure the accuracy of the calibration of the position of the grating visible area and meet the requirements of the naked-eye 3D display.

[0051] It should be noted that the present application can be implemented in software and / or a combination of software and hardware; for example, it can be implemented using an application-specific integrated circuit (ASIC), a general-purpose computer, or any other similar hardware device. In some embodiments, the software program of the present application can be executed by a processor to implement the above steps or functions. Similarly, the software program of the present application (including related data structures) can be stored in a computer-readable recording medium; for example, a RAM memory, a magnetic or optical drive or a floppy disk and the like. In addition, some steps or functions of the present application can be implemented in hardware; for example, as a circuit that cooperates with a processor to perform various steps or functions.

[0052] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0053] The description and application of the present invention here are illustrative, and it is not intended to limit the scope of the present invention to the above-mentioned embodiments. The effects or advantages involved in the embodiments may not be embodied in the embodiments due to interference from various factors, and the description of the effects or advantages is not used to limit the embodiments. The deformation and change of the embodiments disclosed here are possible, and the replacement of the embodiments and the various equivalent parts are well known to those of ordinary skill in the art. It should be clear to those skilled in the art that the present invention can be implemented in other forms, structures, arrangements, proportions, and with other components, materials and parts without departing from the spirit or essential features of the present invention. Other deformations and changes can be made to the embodiments disclosed here without departing from the scope and spirit of the present invention.

Claims

1. An automatic calibration system for naked eye 3D display, characterized in that: The automatic calibration naked-eye 3D display system comprises a calibration plate mobile device, a naked-eye 3D display device and a calibration main control device; The calibration plate moving device comprises a calibration plate, a linear slide rail, and a servo motor; the servo motor controls the linear slide rail to move in the z-axis direction, thereby driving the calibration plate to move; The naked-eye 3D display device comprises a naked-eye 3D stereoscopic display panel and a human eye detection camera module for human eye detection; the naked-eye 3D display device is a naked-eye 3D display device to be calibrated, and the mapping relationship between the display grating parameters and the spatial position is determined according to the calibration algorithm and the system; The calibration main control device includes a host device running a calibration program and a display, and the host device is connected to the display; The calibration master control device is a device that runs the calibration program, is connected to the naked-eye 3D display device, controls the naked-eye 3D display device to change the grating parameters, and searches for the optimal grating parameters that match the depth of the calibration plate; The calibration main control device is connected to the calibration plate moving device at the same time, and controls the servo motor to move the calibration plate on the slide rail so that the calibration plate reaches the specified depth position; When placing the calibration plate and the naked-eye 3D stereoscopic display panel, the naked-eye 3D stereoscopic display panel and the calibration plate are kept parallel, and the center point position of the naked-eye 3D stereoscopic display panel is kept aligned with the center point position of the calibration plate, and the distance between the two is within the effective viewing range of the naked-eye 3D; During the calibration process, the red-green / red-blue interval image on the calibration plate is acquired through the depth camera of the naked-eye 3D display device, which is used to calibrate the mapping relationship between the camera and the visual area of ​​the calibration plate.

2. The automatic calibration naked eye 3D display system according to claim 1, characterized in that: The host device is connected to the servo motor of the calibration plate moving device to control the relative movement and absolute movement of the calibration plate, and is connected to the 3D display module of the naked-eye 3D display to traverse the output to find the best parameters.

3. The automatic calibration naked eye 3D display system according to claim 1, characterized in that: The naked-eye 3D display device is fixed in position and does not move. The image of the calibration plate is obtained through a depth camera device. The coordinates of the visible area in the camera coordinate system obtained by calculation can form a mapping relationship with the human eye position obtained by human eye detection.

4. The automatic calibration naked eye 3D display system according to claim 1, characterized in that: The linear slide rail module in the calibration plate moving device only moves in the depth z-axis direction.

5. The automatic calibration naked eye 3D display system according to claim 1, characterized in that: The calibration plate is fixed on the slide rail by a bracket to ensure that it is perpendicular to the desktop.

6. A control method for automatically calibrating a naked-eye 3D display system according to any one of claims 1 to 5, characterized in that: The control method comprises: Step S1, program start, initialize the calibration plate moving module, naked eye 3D display module, and calibrate the main control module; Step S2, controlling the linear slide rail to move the calibration plate to the calibration position, and ensuring that the center of the naked-eye 3D display is aligned with the calibration plate; Step S3, obtaining the red-blue / red-green image on the calibration plate according to the depth camera module of the naked-eye 3D display, and determining the mapping relationship between the depth visible area position of the current calibration plate and the grating parameters; Step S4, the calibration master control device sends a movement signal to the servo motor of the calibration board moving device through the port, sets the relative movement distance, and starts the calibration of the next distance; Step S5: Calibrate the main control device and repeat the above process until the visible area of ​​the naked-eye 3D device is determined and the corresponding parameter mapping file is output.

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