CN114596421A - Parameter detection method, device and equipment - Google Patents

Abstract

The invention provides a parameter detection method, a parameter detection device and parameter detection equipment, and solves the problem that the actual rotation angle of the equipment cannot be recorded accurately in real time by using the conventional method for detecting the rotation delay and the angle drift of VR display equipment, so that the accuracy of a measurement result is poor. The apparatus of the present invention comprises: the device comprises VR display equipment to be tested and a camera unit which are positioned in a camera bellows, wherein the camera unit is fixed at the center of an eyepiece of the VR display equipment; the driving device drives the rotating mechanism to rotate, the camera obscura is driven to rotate in three preset directions respectively, and the three preset directions correspond to the directions of three coordinate axes of a three-dimensional coordinate system formed by taking the VR display device as an original point respectively. The invention can realize the accurate control and real-time recording of the actual rotation angle of the VR display equipment, and improve the accuracy of the subsequent measurement results of the rotation delay and the angle drift of the VR display equipment.

Description

A parameter detection method, device and equipment

technical field

The present invention relates to the technical field of data processing, and in particular, to a parameter detection method, device and equipment.

Background technique

Virtual reality (Virtual Reality, VR) technology is a computer simulation system that can create and experience virtual worlds. The system simulation of the immersion user is immersed in the simulation environment.

Among them, rotation delay and angle drift are two important indicators for users to purchase VR display devices. Detecting whether the rotational delay and angular drift of the VR display device meet the standards has also become an important detection item before the product leaves the factory. The method often used in the existing detection scheme is to mark and encode several specific positions on the platform, collect the positions and times of these marks in turn during the measurement process, perform linear fitting and estimation on the rotation process, and indirectly complete the display equipment. Position measurement cannot accurately record the actual angle of equipment rotation in real time, which in turn affects the error of fitting calculation, resulting in the problem of poor accuracy of measurement results.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a parameter detection method, device and device, which are used to solve the problem that the existing method for detecting the rotation delay and angular drift of VR display device cannot accurately record the actual angle of the device rotation in real time, thereby affecting the fitting The error of calculation results in the problem of poor accuracy of measurement results.

In order to achieve the above object, the present invention provides a parameter detection device, comprising:

dark box;

A virtual reality VR display device to be tested and a camera unit located in the camera obscura, and the camera unit is fixed at the center of the eyepiece of the VR display device;

a rotating mechanism, the rotating mechanism is connected with the camera obscura;

a driving device, the driving device is connected with the rotating mechanism, the driving device drives the rotating mechanism to rotate, and the rotating mechanism drives the camera obscura to rotate in three preset directions respectively, the three preset directions respectively correspond to the directions of the three coordinate axes of the three-dimensional coordinate system formed with the VR display device as the origin;

and a processor, where the processor is respectively connected to the VR display device, the camera unit and the driving device.

Wherein, the rotating mechanism includes: a plurality of rotating shafts, and the driving device includes: a plurality of servo motors;

Wherein, the servo motor drives the corresponding rotating shaft to rotate in the corresponding preset direction, so as to drive the camera obscura to rotate in the corresponding preset direction.

The present invention also provides a parameter detection method, which is applied to the parameter detection device of the above-mentioned embodiment, including:

Acquiring the virtual reality VR image and the color value of each pixel of the VR image, the color values of different pixels are different, and the VR image is a spherical image with the VR display device to be tested as the center of the sphere;

In the case that the VR display device displays the VR image, recording the cumulative rotation angle of the driving device at each moment, and respectively acquiring each plane image captured by the camera unit at each moment;

Obtain the rotation angle of the VR image at each moment according to the color values of a plurality of preset pixel positions on each plane image;

According to the cumulative rotation angle of the driving device at each moment and the rotation angle of the VR image at each moment, the rotation delay time and the angle drift of the VR display device are calculated and obtained;

Wherein, the driving device drives the VR display device to rotate in three preset directions respectively, and the three preset directions respectively correspond to the three coordinate axes of the three-dimensional coordinate system formed with the VR display device as the origin. The camera unit is fixed at the center of the eyepiece of the VR display device, and each plane image is a partial image of the VR image.

Wherein, the acquiring the virtual reality VR image and the color value of each pixel of the VR image includes:

Drawing a VR image to obtain the position coordinates of each pixel of the VR image;

Based on the position coordinates of each pixel, color coding is performed on each pixel to obtain the color value of each pixel, and the position coordinates of each pixel and the color value have a preset correspondence relation.

Wherein, obtaining the rotation angle of the VR image at each moment according to the color values of a plurality of preset pixel positions on each plane image includes:

According to the color values of the plurality of preset pixel positions on each plane image, the position coordinates of the plurality of preset pixel positions on each plane image corresponding to the VR image are obtained;

According to the position coordinates of a plurality of preset pixel points on each plane image corresponding to the VR image, the rotation angle of the VR image at each moment is calculated.

The plurality of preset pixel positions include: pixel positions in the plane image corresponding to the center of the field of view of the camera unit and pixel positions located at four vertices of the plane image.

The present invention also provides a parameter detection device, comprising:

The first acquisition module is used to acquire the virtual reality VR image and the color value of each pixel of the VR image. The color values of different pixels are different, and the VR image is centered on the VR display device to be tested. spherical image;

A second acquisition module, configured to record the cumulative rotation angle of the driving device at each moment when the VR display device displays the VR image, and to acquire each plane image captured by the camera unit at each corresponding moment;

a first processing module, configured to obtain the rotation angle of the VR image at each moment according to the color values of a plurality of preset pixel point positions on each plane image;

a first calculation module, configured to calculate the rotation delay time and angular drift of the VR display device according to the cumulative rotation angle of the driving device at each moment and the rotation angle of the VR image at each moment;

Wherein, the driving device drives the VR display device to rotate in three preset directions respectively, and the three preset directions respectively correspond to the three coordinate axes of the three-dimensional coordinate system formed with the VR display device as the origin. The camera unit is fixed at the center of the eyepiece of the VR display device, and each plane image is a partial image of the VR image.

The present invention also provides a parameter detection device, comprising a memory, a processor, and a program stored on the memory and running on the processor; the processor implements the above-mentioned parameters when executing the program Detection method.

The present invention also provides a computer-readable storage medium on which a computer program is stored, and when the program is executed by a processor, implements the steps in the above-mentioned parameter detection method.

The above-mentioned technical scheme of the present invention has at least the following beneficial effects:

In the embodiment of the present invention, through the virtual reality VR display device to be tested and the camera unit located in the camera obscura, the camera unit is fixed at the center of the eyepiece of the VR display device; the camera unit and the rotating mechanism of the driving device are respectively connected to the VR display device. , a processor of a camera unit and a driving device, wherein the driving device drives the rotating mechanism to rotate, and drives the camera obscura to rotate in three preset directions respectively, and the three preset directions respectively correspond to the three-dimensional coordinate system formed by the VR display device as the origin. The directions of the three coordinate axes, in this way, the rotating mechanism is driven by the driving device to rotate, which drives the camera obscura, that is, the VR display device, to rotate in three preset directions respectively. The VR display device to be tested can rotate freely, and can realize the VR Accurate control and real-time recording of the actual rotation angle of the display device, thereby improving the accuracy of the subsequent measurement of the rotation delay and angle drift of the VR display device.

Description of drawings

FIG. 1 shows one of the schematic structural diagrams of a parameter detection device according to an embodiment of the present invention;

FIG. 2 shows the second schematic structural diagram of the parameter detection device according to the embodiment of the present invention;

3 shows a schematic flowchart of a parameter detection method according to an embodiment of the present invention;

FIG. 4 shows a schematic diagram of a VR image according to an embodiment of the present invention;

FIG. 5 is a schematic diagram showing the rotation angle of the VR device and the rotation angle of the VR image over time according to an embodiment of the present invention;

6 is a schematic block diagram of a parameter detection device according to an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a parameter detection device according to an embodiment of the present invention.

Detailed ways

In order to make the technical problems, technical solutions and advantages to be solved by the present invention more clear, the following will be described in detail with reference to the accompanying drawings and specific embodiments.

Aiming at the problem that the existing method for detecting the rotation delay and angle drift of the VR display device cannot accurately record the actual angle of the device rotation in real time, thereby affecting the error of the fitting calculation and causing the poor accuracy of the measurement result, the present invention provides a parameter Detection method, device and equipment.

1 to 2 are schematic structural diagrams of a parameter detection device provided by an embodiment of the present invention. The parameter detection device includes: a camera obscura 1; a virtual reality VR display device 2 to be tested and a camera unit 3 located in the camera obscura 1, and the camera unit 3 is fixed at the center of the eyepiece of the VR display device 2; Connection, driving device, the driving device is connected with the rotating mechanism, the driving device drives the rotating mechanism to rotate, and the rotating mechanism drives the camera obscura 1 to rotate in three preset directions respectively, and the three preset directions respectively correspond to the VR display device 2 The direction of the three coordinate axes of the three-dimensional coordinate system formed by the origin; the processor 4, the processor 4 is respectively connected to the VR display device 2, the camera unit 3 and the driving device.

Optionally, the camera unit 3 is a high-definition camera. The camera unit 3 is fixed at the center of the eyepiece of the VR display device 2, and the camera unit 3 moves synchronously with the VR display device, that is, the camera unit 3 rotates with the rotation of the VR display device.

It should be noted that the virtual reality VR display device 2 and the camera unit 3 to be tested are both placed in the camera obscura 1, which can avoid the influence of external light on the measurement accuracy.

Here, the processor 4 and the drive can be integrated in one device.

It should be noted that, since the VR display device 2 is placed in the camera obscura 1, the rotating mechanism drives the camera obscura 1 to rotate in three preset directions respectively, that is, the rotating mechanism drives the VR display device 2 to rotate in three preset directions respectively.

Here, the three-dimensional coordinate system is a three-dimensional Cartesian coordinate system, and the three coordinate axes under the coordinate system are the x coordinate axis, the y coordinate axis, and the z coordinate axis, respectively. Since the rotation mechanism can drive the VR display device 2 to rotate in three preset directions respectively, the detection of rotation delay and angular drift of the VR display device in three rotational degrees of freedom can be realized.

Optionally, the rotating mechanism includes: a plurality of rotating shafts, and the driving device includes: a plurality of servo motors (not shown in the figure); wherein, the servo motors drive corresponding rotating shafts in corresponding preset directions Rotate to drive the camera obscura 1 to rotate in the corresponding preset direction.

Specifically, each of the multiple rotating shafts is driven by a servo motor, that is, each rotating shaft of the multiple rotating shafts is controlled by a servo motor to control the rotation angle.

As an optional implementation, the plurality of rotating shafts include: a first rotating shaft 5 , a second rotating shaft 6 and a third rotating shaft 7 , the first rotating shaft 5 , the second rotating shaft 6 and the The third rotating shafts 7 are respectively distributed in the three preset directions. The driving device includes: a first servo motor, a second servo motor and a third servo motor.

Specifically, the three preset directions include the x-axis direction, the y-axis direction, and the z-axis direction of the three-dimensional coordinate system formed with the VR display device 2 as the origin.

Here, the first rotation axis 5 is distributed in the y-axis direction, and the first rotation axis 5 may be referred to as the pitch rotation axis; the second rotation axis 6 is distributed in the x-axis direction, and the second rotation axis 6 may be referred to as the tumbling rotation axis ; The third rotation axis 7 is distributed in the z-axis direction, and the third rotation axis 7 can be called the yaw rotation axis.

Here, specifically, the first servo motor is used to drive the first rotation shaft 5 to rotate, and the first rotation shaft 5 drives the dark box 1 to rotate in the y-axis direction; the second servo motor is used to drive the second rotation shaft 6 to rotate, and the second rotation The shaft 6 drives the dark box 1 to rotate in the x-axis direction; the third servo motor is used to drive the third rotating shaft 7 to rotate, and the third rotating shaft 7 drives the dark box 1 to rotate in the z-axis direction.

In order to realize the simultaneous measurement of the rotational delay time and the angular drift in the three preset directions, that is, the three rotational degrees of freedom, further, as shown in FIG. Also includes:

The first support 8 connected with the first rotating shaft 5, the dark box 1 is fixed to the first support 8; the second support 9 is connected to the first rotating shaft 5 and the second rotating shaft 6 respectively; the second rotating shaft 6 is respectively connected and the third bracket 10 of the third rotating shaft 7 .

Wherein, when the first servo motor drives the first rotating shaft 5 to rotate, the first rotating shaft 5 drives the first bracket 8 and the dark box 1 to rotate in the first preset direction. For example, the first preset direction is the y-axis direction.

When the second servo motor drives the second rotating shaft 6 to rotate, the second rotating shaft 6 drives the second bracket 9 , the first rotating shaft 5 and the dark box 1 to rotate in the second preset direction. For example, the second preset direction is the x-axis direction.

It should be noted that, in this case, it does not affect the first rotating shaft 5 to drive the first bracket 8 and the dark box 1 to rotate in the first preset direction, that is, when the second servo motor drives the second rotating shaft 6 to rotate Meanwhile, when the first servo motor drives the first rotating shaft 5 to rotate, the camera obscura 1 can rotate in the second preset direction and the first preset direction at the same time.

When the third servo motor drives the third rotating shaft 7 to rotate, the third rotating shaft 7 drives the third bracket, the second rotating shaft 6 and the dark box 1 to rotate in a third preset direction. For example, the third preset direction is the z-axis direction.

It should be noted that, in this case, it does not affect the first rotating shaft 5 to drive the first bracket 8 and the dark box 1 to rotate in the first preset direction, and the second rotating shaft 6 to drive the second support 9 to rotate in the second preset direction. , that is, when the third servo motor drives the third rotating shaft 7 to rotate, the second servo motor drives the second rotating shaft 6 to rotate, and the first servo motor drives the first rotating shaft 5 to rotate, the camera obscura 1 It can rotate in the third preset direction, the second preset direction and the first preset direction at the same time.

Optionally, the first bracket 8 , the second bracket 9 and the third bracket 10 are all annular brackets. The radius of the first bracket 8 is smaller than the radius of the second bracket 9 , and the radius of the second bracket 9 is smaller than the radius of the third bracket 10 . In this way, when the three rotation axes rotate in their respective preset directions, they can not affect each other, and do not affect the camera obscura 1, that is, the VR display device 2, to rotate in the three preset directions at the same time.

The parameter detection device of the embodiment of the present invention passes through the virtual reality VR display device to be tested and the camera unit located in the camera obscura. The camera unit is fixed at the center of the eyepiece of the VR display device; the camera camera unit and the rotating mechanism of the driving device are respectively connected to The processor of the VR display device, the camera unit and the driving device, wherein the driving device drives the rotating mechanism to rotate, and drives the camera obscura to rotate in three preset directions respectively, and the three preset directions respectively correspond to the three-dimensional image formed by the VR display device as the origin. The directions of the three coordinate axes of the coordinate system are located. In this way, the rotating mechanism is driven by the driving device to rotate, and the camera obscura, that is, the VR display device, is rotated in three preset directions respectively. The VR display device to be tested can rotate freely and can Realize precise control and real-time recording of the actual rotation angle of the VR display device, thereby improving the accuracy of the subsequent measurement of the rotation delay and angle drift of the VR display device.

As shown in FIG. 3 , it is a schematic flowchart of a parameter detection method provided by an embodiment of the present invention. The method is applied to the parameter detection device as described above. Wherein, the method may include:

Step 301, acquiring a virtual reality VR image and the color value of each pixel of the VR image, the color values of different pixels are different, and the VR image is a spherical image with the VR display device to be tested as the center of the sphere;

In this step, the VR image is a pre-drawn virtual space image, that is, the VR image is a specially-made virtual space image.

Wherein, this step can specifically include:

Drawing a VR image to obtain the position coordinates of each pixel of the VR image;

Here, the VR image is a spherical image, and any pixel point on the spherical image can be uniquely determined by two-dimensional coordinates. The position coordinate of each pixel of the VR image may be the coordinate value in the corresponding polar coordinate system.

Based on the position coordinates of each pixel, color coding is performed on each pixel to obtain the color value of each pixel, and the position coordinates of each pixel and the color value have a preset correspondence relation.

可由二维坐标唯一确定，因此，可将P点处的颜色值作为其坐标

的函数进行编码着色。In this step, as shown in Figure 4, taking the color and polar coordinates of RGB (RGB is the color representing the three channels of red, green and blue) as an example, any pixel on the spherical image

It can be uniquely determined by two-dimensional coordinates, so the color value at point P can be used as its coordinates

function for encoding and coloring.

Optionally, let the color at any pixel point P be

Δθ分别为球面图像上单个像素点在两个维度上所对应的球心角(或电机步进角)，mod为取余函数。in,

Δθ is the spherical center angle (or motor step angle) corresponding to a single pixel on the spherical image in two dimensions, and mod is the remainder function.

Through the above-mentioned color coding process for the pixel points, the position coordinates of each pixel point and the color value have a preset corresponding relationship. That is to say, the position of the pixel in the spherical image, that is, the VR image, can be determined by the color value of the pixel, that is, the position coordinate.

Step 302, under the condition that the VR display device displays the VR image, record the cumulative rotation angle of the driving device at each moment, and obtain each plane image captured by the camera unit at the corresponding moment;

Optionally, the driving device drives the VR display device to rotate in three preset directions respectively, and the three preset directions respectively correspond to three coordinates of a three-dimensional coordinate system formed with the VR display device as an origin. In the direction of the axis, the camera unit is fixed at the center of the eyepiece of the VR display device, and each plane image is a partial image of the VR image.

It should be noted that the recording driving device accumulates the rotation angles at each moment, that is, records the time series of the rotation angles of the VR display device in the three preset directions.

Here, before the driving device drives the VR display device to rotate, it is necessary to ensure that the camera obscura 1 is in a stationary state.

Step 303, obtaining the rotation angle of the VR image at each moment according to the color values of a plurality of preset pixel positions on each plane image;

In this step, each plane image is a partial image of the VR image. As the driving device drives the VR display device to rotate in three preset directions, the plane images captured by the camera unit at corresponding moments are also the same. That is to say, the plane images captured by the capturing unit correspond to partial images of the VR images at different rotation angles.

Here, the preset pixel positions and numbers on each plane image are the same.

Since the position coordinates of each pixel of the VR image have a preset corresponding relationship with the color value, each plane image is a partial image of the VR image, and the color values of multiple preset pixel positions on each plane image are known. , and the position coordinates of a plurality of preset pixels corresponding to each moment on the VR image can be obtained, and then the rotation angle of the VR image at each moment can be calculated through the position coordinates.

Step 304, according to the cumulative rotation angle of the driving device at each moment and the rotation angle of the VR image at each moment, calculate the rotation delay time and the angle drift of the VR display device;

In this step, referring to FIG. 5 , a schematic diagram of the rotation angle of the VR device and the rotation angle of the VR image over time. By taking the same moment, the corresponding rotation angle of the driving device at this moment and the rotation angle of the VR image at this moment, and calculating the difference between the two angles, the angle drift Δs can be obtained; by calculating when the driving device and the VR image reach the same rotation angle The difference between the corresponding times, the rotation delay time Δt is obtained.

As an optional implementation manner, method step 303 in this embodiment of the present invention may include:

According to the color values of the plurality of preset pixel positions on each plane image, the position coordinates of the plurality of preset pixel positions on each plane image corresponding to the VR image are obtained;

In this step, the position coordinates of the multiple preset pixel positions on each planar image corresponding to the VR image may be obtained by decoding the color values of the multiple preset pixel positions on each planar image.

Specifically, through the inverse process of the encoding process of obtaining the color value of the pixel point from the position coordinate of the pixel point, that is, the decoding process, the position coordinates of a plurality of preset pixel point positions on each plane image corresponding to the VR image are obtained .

Of course, the position coordinates and color values of each pixel can also be recorded, and the position coordinates of a plurality of preset pixel positions on each plane image corresponding to the VR image can be obtained by looking up a table.

According to the position coordinates of a plurality of preset pixel points on each plane image corresponding to the VR image, the rotation angle of the VR image at each moment is calculated.

Optionally, the plurality of preset pixel positions include: pixel positions in the plane image corresponding to the center of the field of view of the camera unit and pixel positions located at four vertices of the plane image.

It should be noted that the reason for selecting multiple preset pixel point positions can improve the calculation accuracy through multiple calculations. In particular, when the VR display device is rotated (rotated around the y-axis), the coordinates of the pixel position in the plane image corresponding to the center of the field of view of the camera unit remain unchanged. Therefore, in this case, it is necessary to According to the coordinates of the pixel positions located at the four vertices of the plane image, the angle of the pitch rotation in the VR image displayed by the VR display device is calculated.

In the parameter detection method of the embodiment of the present invention, by acquiring a virtual reality VR image and the color value of each pixel of the VR image, the color values of different pixels are different, and the VR image is based on the VR display device to be tested as The spherical image of the center of the sphere; when the VR display device displays the VR image, record the cumulative rotation angle of the driving device at each moment, and obtain each plane image captured by the camera unit at the corresponding moment; according to The color values of a plurality of preset pixel positions on each plane image are obtained to obtain the rotation angle of the VR image at each moment; according to the cumulative rotation angle of the driving device at each moment and the VR image at each moment The rotation angle is calculated to obtain the rotation delay time and the angle drift of the VR display device, wherein, the driving device drives the VR display device to rotate in three preset directions respectively, and the three preset directions Corresponding to the directions of the three coordinate axes of the three-dimensional coordinate system formed by the VR display device as the origin, the camera unit is fixed at the center of the eyepiece of the VR display device, and each plane image is the VR display device. Part of the image, in this way, can realize precise control and real-time recording of the actual rotation angle of the VR display device, and improve the accuracy of the measurement results for measuring the rotation delay and angle drift of the VR display device.

As shown in FIG. 6 , an embodiment of the present invention further provides a parameter detection device, which includes:

The first acquisition module 601 is used to acquire the virtual reality VR image and the color value of each pixel of the VR image, the color values of different pixels are different, and the VR image is centered on the VR display device to be tested. The spherical image of ;

The second acquisition module 602 is configured to record the cumulative rotation angle of the driving device at each moment when the VR display device displays the VR image, and to acquire each plane image captured by the camera unit at each corresponding moment ;

The first processing module 603 is configured to obtain the rotation angle of the VR image at each moment according to the color values of the plurality of preset pixel positions on each plane image;

The first calculation module 604 is configured to calculate the rotation delay time and the angle drift of the VR display device according to the cumulative rotation angle of the driving device at each moment and the rotation angle of the VR image at each moment;

Wherein, the driving device drives the VR display device to rotate in three preset directions respectively, and the three preset directions respectively correspond to the three coordinate axes of the three-dimensional coordinate system formed with the VR display device as the origin. The camera unit is fixed at the center of the eyepiece of the VR display device, and each plane image is a partial image of the VR image.

Optionally, the first obtaining module 601 includes:

a drawing unit, used to draw a VR image, to obtain the position coordinates of each pixel of the VR image;

a first obtaining unit, configured to color-code each pixel based on the position coordinates of each pixel, to obtain the color value of each pixel, and the position coordinates of each pixel Has a preset correspondence with color values.

Optionally, the first processing module 603 includes:

a first processing unit, configured to obtain the position coordinates of the plurality of preset pixel positions on each plane image corresponding to the VR image according to the color values of the plurality of preset pixel positions on each plane image ;

The second processing unit is configured to calculate and obtain the rotation angle of the VR image at each moment according to the position coordinates of the plurality of preset pixel points on each plane image corresponding to the VR image.

Optionally, the plurality of preset pixel positions include: pixel positions in the plane image corresponding to the center of the field of view of the camera unit and pixel positions located at four vertices of the plane image.

The parameter detection device of the embodiment of the present invention obtains a virtual reality VR image and the color value of each pixel of the VR image, and the color value of different pixels is different, and the VR image is based on the VR display device to be tested. The spherical image of the center of the sphere; when the VR display device displays the VR image, record the cumulative rotation angle of the driving device at each moment, and obtain each plane image captured by the camera unit at the corresponding moment; according to The color values of a plurality of preset pixel positions on each plane image are obtained to obtain the rotation angle of the VR image at each moment; according to the cumulative rotation angle of the driving device at each moment and the VR image at each moment The rotation angle is calculated to obtain the rotation delay time and the angle drift of the VR display device, wherein, the driving device drives the VR display device to rotate in three preset directions respectively, and the three preset directions Corresponding to the directions of the three coordinate axes of the three-dimensional coordinate system formed by the VR display device as the origin, the camera unit is fixed at the center of the eyepiece of the VR display device, and each plane image is the VR display device. Part of the image, in this way, can realize precise control and real-time recording of the actual rotation angle of the VR display device, and improve the accuracy of the measurement results for measuring the rotation delay and angle drift of the VR display device.

It should be noted here that the above-mentioned device provided by the embodiment of the present invention can realize all the method steps realized by the above-mentioned method embodiment, and can achieve the same technical effect, and the same as the method embodiment in this embodiment is not repeated here. The parts and beneficial effects will be described in detail.

In order to better achieve the above purpose, as shown in FIG. 7 , an embodiment of the present invention further provides a parameter detection device, including a processor 700 and a transceiver 710, and the transceiver 710 receives and sends data under the control of the processor , the processor 700 is configured to perform the following processes:

Acquiring the virtual reality VR image and the color value of each pixel of the VR image, the color values of different pixels are different, and the VR image is a spherical image with the VR display device to be tested as the center of the sphere;

In the case that the VR display device displays the VR image, recording the cumulative rotation angle of the driving device at each moment, and respectively acquiring each plane image captured by the camera unit at each moment;

Obtain the rotation angle of the VR image at each moment according to the color values of a plurality of preset pixel positions on each plane image;

According to the cumulative rotation angle of the driving device at each moment and the rotation angle of the VR image at each moment, the rotation delay time and the angle drift of the VR display device are calculated and obtained;

Wherein, the driving device drives the VR display device to rotate in three preset directions respectively, and the three preset directions respectively correspond to the three coordinate axes of the three-dimensional coordinate system formed with the VR display device as the origin. The camera unit is fixed at the center of the eyepiece of the VR display device, and each plane image is a partial image of the VR image.

Optionally, the processor 700 is further configured to perform the following processes:

Drawing a VR image to obtain the position coordinates of each pixel of the VR image;

Based on the position coordinates of each pixel, color coding is performed on each pixel to obtain the color value of each pixel, and the position coordinates of each pixel and the color value have a preset correspondence relation.

Optionally, the processor 700 is further configured to perform the following processes:

According to the color values of the plurality of preset pixel positions on each plane image, the position coordinates of the plurality of preset pixel positions on each plane image corresponding to the VR image are obtained;

According to the position coordinates of a plurality of preset pixel points on each plane image corresponding to the VR image, the rotation angle of the VR image at each moment is calculated.

Optionally, the plurality of preset pixel positions include: pixel positions in the plane image corresponding to the center of the field of view of the camera unit and pixel positions located at four vertices of the plane image.

The parameter detection device according to the embodiment of the present invention obtains a virtual reality VR image and the color value of each pixel of the VR image, and the color values of different pixels are different, and the VR image is based on the VR display device to be tested. The spherical image of the center of the sphere; when the VR display device displays the VR image, record the cumulative rotation angle of the driving device at each moment, and obtain each plane image captured by the camera unit at the corresponding moment; according to The color values of a plurality of preset pixel positions on each plane image are obtained to obtain the rotation angle of the VR image at each moment; according to the cumulative rotation angle of the driving device at each moment and the VR image at each moment The rotation angle is calculated to obtain the rotation delay time and the angle drift of the VR display device, wherein, the driving device drives the VR display device to rotate in three preset directions respectively, and the three preset directions Corresponding to the directions of the three coordinate axes of the three-dimensional coordinate system formed by the VR display device as the origin, the camera unit is fixed at the center of the eyepiece of the VR display device, and each plane image is the VR display device. Part of the image, in this way, can realize precise control and real-time recording of the actual rotation angle of the VR display device, and improve the accuracy of the measurement results for measuring the rotation delay and angle drift of the VR display device.

An embodiment of the present invention further provides a parameter detection device, including a memory, a processor, and a computer program stored on the memory and executable on the processor, and the processor implements the above-mentioned program when the processor executes the program Each process in the embodiment of the parameter detection method can achieve the same technical effect. In order to avoid repetition, it will not be repeated here.

Embodiments of the present invention also provide a computer-readable storage medium on which a computer program is stored. When the program is executed by a processor, each process in the above-mentioned embodiment of the parameter detection method can be implemented, and the same technical effect can be achieved. , in order to avoid repetition, it will not be repeated here. The computer-readable storage medium is, for example, a read-only memory (Read-Only Memory, ROM for short), a random access memory (Random Access Memory, RAM for short), a magnetic disk, or an optical disk.

As will be appreciated by one skilled in the art, the embodiments of the present application may be provided as a method, a system or a computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-readable storage media having computer-usable program code embodied therein, including but not limited to disk storage, optical storage, and the like.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the present application. It will be understood that each flow and/or block in the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to the processor of a general purpose computer, special purpose computer, embedded processor or other programmable data processing device to produce a machine such that the instructions executed by the processor of the computer or other programmable data processing device produce Means for implementing the functions specified in a flow or flow and/or a block or blocks of the flowchart.

These computer program instructions may also be stored in a computer-readable storage medium capable of directing a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce a paper product comprising the instruction means, The instruction means implements the functions specified in the flow or flows of the flowcharts and/or the block or blocks of the block diagrams.

These computer program instructions can also be loaded onto a computer or other programmable data processing device to cause the computer or other programmable device to perform a series of operational steps to produce a computer-implemented process, thereby causing the instructions to be executed on the computer or other programmable data processing device Steps are provided for implementing the functions specified in a flow or flows of the flowcharts and/or a block or blocks of the block diagrams.

The above are the preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, without departing from the principles of the present invention, several improvements and modifications can be made. These improvements and modifications It should also be regarded as the protection scope of the present invention.

Claims (13)

1. a parameter detection device, is characterized in that, comprises: dark box; A virtual reality VR display device to be tested and a camera unit located in the camera obscura, and the camera unit is fixed at the center of the eyepiece of the VR display device; a rotating mechanism, the rotating mechanism is connected with the camera obscura; a driving device, the driving device is connected with the rotating mechanism, the driving device drives the rotating mechanism to rotate, and the rotating mechanism drives the camera obscura to rotate in three preset directions respectively, the three preset directions respectively correspond to the directions of the three coordinate axes of the three-dimensional coordinate system formed with the VR display device as the origin; and a processor, where the processor is respectively connected to the VR display device, the camera unit and the driving device. 2. The device according to claim 1, wherein the rotating mechanism comprises: a plurality of rotating shafts, and the driving device comprises: a plurality of servo motors; Wherein, the servo motor drives the corresponding rotating shaft to rotate in the corresponding preset direction, so as to drive the camera obscura to rotate in the corresponding preset direction. 3. A parameter detection method, applied to the parameter detection device according to any one of claims 1 to 2, characterized in that, comprising: Acquiring the virtual reality VR image and the color value of each pixel of the VR image, the color values of different pixels are different, and the VR image is a spherical image with the VR display device to be tested as the center of the sphere; In the case that the VR display device displays the VR image, recording the cumulative rotation angle of the driving device at each moment, and respectively acquiring each plane image captured by the camera unit at each moment; Obtain the rotation angle of the VR image at each moment according to the color values of a plurality of preset pixel positions on each plane image; According to the cumulative rotation angle of the driving device at each moment and the rotation angle of the VR image at each moment, the rotation delay time and the angle drift of the VR display device are calculated and obtained; Wherein, the driving device drives the VR display device to rotate in three preset directions respectively, and the three preset directions respectively correspond to the three coordinate axes of the three-dimensional coordinate system formed with the VR display device as the origin. The camera unit is fixed at the center of the eyepiece of the VR display device, and each plane image is a partial image of the VR image. 4. The method according to claim 3, wherein the acquiring a virtual reality VR image and the color value of each pixel of the VR image comprises: Drawing a VR image to obtain the position coordinates of each pixel of the VR image; Based on the position coordinates of each pixel, color coding is performed on each pixel to obtain the color value of each pixel, and the position coordinates of each pixel and the color value have a preset correspondence relation. 5 . The method according to claim 3 , wherein the obtaining the rotation angle of the VR image at each moment according to the color values of a plurality of preset pixel point positions on each plane image, comprising: 6 . According to the color values of the plurality of preset pixel positions on each plane image, the position coordinates of the plurality of preset pixel positions on each plane image corresponding to the VR image are obtained; According to the position coordinates of a plurality of preset pixel points on each plane image corresponding to the VR image, the rotation angle of the VR image at each moment is calculated. 6 . The method according to claim 3 , wherein the plurality of preset pixel positions include: pixel positions in the planar image corresponding to the center of the field of view of the camera unit and pixel positions located in the planar image. 7 . The pixel position of the four vertices. 7. A parameter detection device, characterized in that, comprising: The first acquisition module is used to acquire the virtual reality VR image and the color value of each pixel of the VR image. The color values of different pixels are different, and the VR image is centered on the VR display device to be tested. spherical image; A second acquisition module, configured to record the cumulative rotation angle of the drive device at each moment when the VR display device displays the VR image, and to acquire each plane image captured by the camera unit at each corresponding moment; a first processing module, configured to obtain the rotation angle of the VR image at each moment according to the color values of a plurality of preset pixel point positions on each plane image; a first calculation module, configured to calculate the rotation delay time and angular drift of the VR display device according to the cumulative rotation angle of the driving device at each moment and the rotation angle of the VR image at each moment; Wherein, the driving device drives the VR display device to rotate in three preset directions respectively, and the three preset directions respectively correspond to the three coordinate axes of the three-dimensional coordinate system formed with the VR display device as the origin. The camera unit is fixed at the center of the eyepiece of the VR display device, and each plane image is a partial image of the VR image. 8. A parameter detection device, comprising a processor and a transceiver, the transceiver receiving and transmitting data under the control of the processor, wherein the processor is used to perform the following operations: Acquiring the virtual reality VR image and the color value of each pixel of the VR image, the color values of different pixels are different, and the VR image is a spherical image with the VR display device to be tested as the center of the sphere; In the case that the VR display device displays the VR image, recording the cumulative rotation angle of the driving device at each moment, and respectively acquiring each plane image captured by the camera unit at each moment; Obtain the rotation angle of the VR image at each moment according to the color values of a plurality of preset pixel positions on each plane image; According to the cumulative rotation angle of the driving device at each moment and the rotation angle of the VR image at each moment, the rotation delay time and the angle drift of the VR display device are calculated and obtained; Wherein, the driving device drives the VR display device to rotate in three preset directions respectively, and the three preset directions respectively correspond to the three coordinate axes of the three-dimensional coordinate system formed with the VR display device as the origin. The camera unit is fixed at the center of the eyepiece of the VR display device, and each plane image is a partial image of the VR image. 9. The parameter detection device according to claim 8, wherein the processor is further configured to perform the following process: Drawing a VR image to obtain the position coordinates of each pixel of the VR image; Based on the position coordinates of each pixel, color coding is performed on each pixel to obtain the color value of each pixel, and the position coordinates of each pixel and the color value have a preset correspondence relation. 10. The parameter detection device according to claim 8, wherein the processor is further configured to perform the following process: According to the color values of the plurality of preset pixel positions on each plane image, the position coordinates of the plurality of preset pixel positions on each plane image corresponding to the VR image are obtained; According to the position coordinates of a plurality of preset pixel points on each plane image corresponding to the VR image, the rotation angle of the VR image at each moment is calculated. 11 . The parameter detection device according to claim 8 , wherein the plurality of preset pixel positions include: pixel positions in the plane image corresponding to the center of the field of view of the camera unit and pixel positions located in the The pixel positions of the four vertices of the plane image. 12. A parameter detection device, comprising a memory, a processor, and a program stored on the memory and running on the processor; it is characterized in that, when the processor executes the program, the program as claimed in claim 1 is implemented The parameter detection method described in any one of to 4. 13. A computer-readable storage medium on which a computer program is stored, characterized in that, when the program is executed by a processor, the steps in the parameter detection method according to any one of claims 1 to 4 are implemented.

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