CN107888892B - The visual field test method and system of VR equipment - Google Patents

Abstract

The present invention provides a field of view testing method and system for a VR device, wherein the method includes: shooting an image projected on a VR screen to obtain a first image; setting a rectangle along the center of the first image; Project the first image of the rectangle on the VR screen and shoot it to obtain the second image; then take the center of the second image as the starting point, find the four sides of the rectangle around the starting point in the second image respectively, and determine the rectangle Whether the four sides of the rectangle are all in the second image; if the four sides of the rectangle are in the second image, then increase the length and width of the rectangle set in the first image by a predetermined value, and re-shoot the screen; if If one of the sides of the rectangle is not in the second image, it is determined that the field of view of the VR device is the length and width of the current rectangle. The invention can simply and effectively test the field of view of the VR equipment, improve the production quality of the VR equipment, and make it meet the requirements of users.

Description

Method and system for testing field of view of VR equipment

technical field

The present invention relates to the technical field of optical testing, and more specifically, to a method and system for testing a field of view of a VR device.

Background technique

VR (Virtual Reality, virtual reality) can generate an interactive three-dimensional environment for users through the comprehensive use of computer graphics systems and various control devices, and make users feel immersive. At present, VR technology can be widely used in many fields such as life entertainment, urban planning, interior design, industrial simulation, road and bridge design, etc. When the VR device is displayed, the user cannot see the external scene, but can only see the virtual image.

In a VR device, a virtual image that can be seen by the human eye is generated on the VR screen through the VR lens. Then in the VR device, the size of the field of view of the VR device determines the virtual image that the user observes on the VR screen. Therefore, it is particularly important to test the field of view of VR equipment. However, currently there is no effective testing method for testing the field of view of a VR device, which will undoubtedly affect the quality of the VR device, thereby reducing user experience.

SUMMARY OF THE INVENTION

In view of the above problems, the purpose of the present invention is to provide a method and system for testing the field of view of VR equipment, so as to solve the problem that the field of view of VR equipment cannot be tested at present.

The present invention provides a field of view testing method for a VR device, comprising:

Shooting the image projected on the VR screen to obtain the first image;

A rectangle is set along the center of the first image, and the length and width of the rectangle are determined according to the length and width of the first image;

Projecting the first image with a rectangle set on the VR screen, and shooting the first image with a rectangle set on the VR screen to obtain a second image;

Taking the center of the second image as the starting point, search for the four sides of the rectangle around the starting point in the second image, and determine whether the four sides of the rectangle are all in the second image; wherein,

If the four sides of the rectangle are all in the second image, the length and width of the rectangle set in the first image are respectively increased by predetermined values, and the screen projection shooting is performed again;

If one of the sides of the rectangle is not in the second image, determine that the field of view of the VR device is the length and width of the current rectangle.

In addition, a preferred method is: increase the length and width of the rectangle set in the first image by a predetermined value, and re-shoot the screen, and place the rectangle whose length and width are respectively increased by a predetermined value on the first image , and re-shoot the first image in which the rectangle whose length and width are respectively increased by a predetermined value is placed, so as to re-acquire the second image.

In addition, a preferred manner is: during the process of putting the rectangle whose length and width are increased by predetermined values into the first image, the center of the rectangle whose length and width are respectively increased by predetermined values coincides with the center of the first image.

In addition, a preferred manner is: in the process of arranging a rectangle along the center of the first image, the color of the rectangle arranged along the center of the first image is different from the color of the first image.

In addition, a preferred manner is: both the initial length and width of the rectangle are smaller than the length and width of the first image.

In addition, the preferred method is: to find the four sides of the rectangle along the four sides of the starting point in the second image respectively refers to searching for the four sides of the rectangle in the four directions of the top, bottom, left and right of the starting point in the second image. side.

Corresponding to the above method, the present invention provides a field of view testing system for VR equipment, including:

The first image acquisition unit is used to capture the image projected on the VR screen to acquire the first image;

a rectangle setting unit, configured to set a rectangle along the center of the first image acquired by the first image acquisition unit, the length and width of the rectangle are determined according to the length and width of the first image;

The second image acquisition unit is used to project the rectangle set by the rectangle setting unit into the first image, project the first image with the rectangle on the VR screen, and project the first image with the rectangle projected on the VR screen. Shooting an image to obtain a second image;

The field of view determination unit is used to take the center of the second image acquired by the second image acquisition unit as a starting point, search for the four sides of the rectangle around the starting point in the second image respectively, and determine whether the four sides of the rectangle are all within the second In the image; wherein, if the four sides of the rectangle are all in the second image, the length and width of the rectangle set in the first image are respectively increased by a predetermined value, and the projection screen is re-shot;

If one of the sides of the rectangle is not in the second image, determine that the field of view of the VR device is the length and width of the current rectangle.

The method and system for testing the field of view of a VR device provided by the present invention above obtains a first image by shooting an image projected on a VR screen; a rectangle is set along the center of the first image, and the length and width of the rectangle are according to the first image. The length and width of an image are determined; the first image with a rectangle is projected on the VR screen and photographed to obtain a second image; then starting from the center of the second image, the Find the four sides of the rectangle around the starting point, and determine whether the four sides of the rectangle are in the second image; if the four sides of the rectangle are in the second image, increase the length and width of the rectangle set in the first image respectively Predetermine the value, and perform screen projection shooting again; if one of the sides of the rectangle is not in the second image, determine that the field of view of the VR device is the length and width of the current rectangle. The invention can simply and effectively test the field of view of the VR equipment, improve the production quality of the VR equipment, meet the requirements of users, and improve the user experience.

To the accomplishment of the foregoing and related ends, one or more aspects of the invention include the features particularly pointed out in the detailed description hereinafter. The following description and accompanying drawings detail certain exemplary aspects of the invention. These aspects are indicative, however, of but a few of the various ways in which the principles of the invention may be employed. Furthermore, the invention is intended to include all such aspects and their equivalents.

Description of drawings

Other objectives and results of the present invention will become clearer and easier to understand by referring to the following description in conjunction with the accompanying drawings, and with a more comprehensive understanding of the present invention. In the attached image:

Fig. 1 is the first flowchart of the field of view test method of the VR equipment according to the embodiment of the present invention;

2 is a second flow chart of a method for testing a field of view of a VR device according to an embodiment of the present invention;

Fig. 3 is a logical structural block diagram of a field of view testing system for a VR device according to an embodiment of the present invention.

The same reference numerals indicate similar or corresponding features or functions throughout the drawings.

Detailed ways

Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

Aiming at the aforementioned problem that the field of view of the VR device cannot be tested at present, the present invention obtains the first image by shooting the image projected on the VR screen; a rectangle is set along the center of the first image, and the length and width of the rectangle are Determined according to the length and width of the first image; project the first image with a rectangle on the VR screen and shoot it to obtain the second image; then take the center of the second image as the starting point, respectively in the second image Find the four sides of the rectangle around the starting point, and determine whether the four sides of the rectangle are in the second image; if the four sides of the rectangle are in the second image, set the length and width of the rectangle in the first image Respectively increase the predetermined values, and perform screen projection shooting again; if one of the sides of the rectangle is not in the second image, determine that the field of view of the VR device is the length and width of the current rectangle. The invention can simply and effectively test the field of view of the VR equipment, improve the production quality of the VR equipment, meet the requirements of users, and improve the user experience.

To illustrate the field of view testing method for a VR device provided by the present invention, FIG. 1 shows a first flow of the field of view testing method for a VR device according to an embodiment of the present invention.

As shown in Figure 1, the field of view testing method of the VR equipment provided by the present invention includes:

S110: Shoot the image projected on the VR screen to obtain a first image;

S120: setting a rectangle along the center of the first image, the length and width of the rectangle are determined according to the length and width of the first image;

S130: Project the first image with a rectangle set on the VR screen, and shoot the first image with a rectangle set on the VR screen to obtain a second image;

S140: Take the center of the second image as the starting point, search for the four sides of the rectangle around the starting point in the second image, and determine whether the four sides of the rectangle are all in the second image; if the four sides of the rectangle are all in the second image , then go to S150, if one of the sides of the rectangle is not in the second image, go to S160;

S150: Increase the length and width of the rectangle set in the first image by predetermined values respectively, and then return to S130;

S160: Determine the field of view of the VR device as the length and width of the current rectangle.

It should be noted that in the above step S120, setting a rectangle along the center of the first image refers to setting a rectangle centered on the center of the first image, and the initial length and width of the rectangle set along the center of the first image are equal to Less than the length and width of the first image.

In addition, in the above step S150, the length and width of the rectangle set in the first image are respectively increased by predetermined values, and in the process of re-shooting the screen, the rectangle whose length and width are respectively increased by predetermined values is placed on the first image. In the first image, the first image in which the rectangle whose length and width are respectively increased by a predetermined value is placed is re-shot, so as to re-acquire the second image.

Further, during the process of placing the rectangle whose length and width are respectively increased by a predetermined value into the first image, the center of the rectangle whose length and width are respectively increased by a predetermined value coincides with the center of the first image. That is to say, when reacquiring the second image, a rectangle is also set along the center of the first image, and the length and width of the rectangle are the values obtained by increasing the length and width of the current rectangle by predetermined values respectively.

In addition, in order to better distinguish it from the first image, in the process of arranging a rectangle along the center of the first image, the color of the rectangle arranged along the center of the first image is different from the color of the first image.

In addition, the aforementioned searching for the four sides of the rectangle around the starting point in the second image refers to searching for the four sides of the rectangle along four directions above, below, left and right of the starting point in the second image.

In order to illustrate the present invention more clearly, FIG. 2 shows the second process of the field of view testing method of the VR device according to the embodiment of the present invention; as shown in FIG. 2:

S210: Shoot the image projected on the VR screen to generate an image A whose length*width is M*N pixels;

S220: Taking the center of the image A as the center, draw a green rectangle D whose length*width is (0.5M+2)*(0.5N+2);

S230: putting D into image A, using a camera to shoot image A with D placed therein, and obtaining image B;

S240: Taking the center of the image B as the starting point, search for the four sides L1, L2, L3 and L4 of the green rectangle D along the four directions above, below, left and right of the starting point in the image B; if the green rectangle The four sides L1, L2, L3 and L4 of D are all in the image B, then enter S250, if one of the sides of the green rectangle D is not in the image B, then enter S260;

S250: Increase the length and width of the green rectangle D by 2 pixels respectively, and then return to S230;

S260: The field of view of the VR device is the length and width of the current green rectangle D.

Corresponding to the above method, the present invention provides a field of view testing system for a VR device. FIG. 3 shows a logical structure of the field of view testing system for a VR device according to an embodiment of the present invention.

As shown in FIG. 3 , the field of view testing system 300 of a VR device provided by the present invention includes a first image acquisition unit 310 , a rectangle setting unit 320 , a second image acquisition unit 330 , and a field of view determination unit 340 .

Wherein, the first image acquisition unit 310 is used to shoot the image projected on the VR screen to acquire the first image; the rectangle setting unit 320 is used to set a rectangle along the center of the first image acquired by the first image acquisition unit 310 , the length and width of the rectangle are determined according to the length and width of the first image; the second image acquisition unit 330 is used to place the rectangle set by the rectangle setting unit 320 into the first image, and project the first image with the rectangle on the on the VR screen, and shoot the first image projected on the VR screen with a rectangle to obtain the second image; Starting point, find the four sides of the rectangle around the starting point in the second image, and determine whether the four sides of the rectangle are all in the second image; where, if the four sides of the rectangle are all in the second image, set the The length and width of the rectangle in the first image are respectively increased by a predetermined value, and the screen shooting is performed again; if one of the sides of the rectangle is not in the second image, it is determined that the field of view of the VR device is the length and width of the current rectangle.

From the above, it can be seen that the field of view testing method and system of VR equipment provided by the present invention can be applied to the actual production line to test the field of view of VR equipment, and is simple and practical, which can improve the production quality of VR equipment and make it meet the needs of users. To meet the requirements of users and improve the user experience.

The method and system for testing the field of view of a VR device according to the present invention are described above by way of example with reference to the accompanying drawings. However, those skilled in the art should understand that various improvements can be made to the field of view testing method and system for VR equipment proposed in the present invention without departing from the content of the present invention. Therefore, the protection scope of the present invention should be determined by the contents of the appended claims.

Claims (7)

1. A field of view testing method of a VR device, comprising:

shooting an image projected on a VR screen to obtain a first image;

setting a rectangle along the center of the first image, wherein the length and the width of the rectangle are determined according to the length and the width of the first image;

projecting a first image with a rectangle on the VR screen, and shooting the first image with the rectangle projected on the VR screen to obtain a second image;

respectively searching four sides of the rectangle in the second image along the periphery of the starting point by taking the center of the second image as the starting point, and determining whether the four sides of the rectangle are in the second image; wherein,

if the four sides of the rectangle are in the second image, respectively increasing the length and the width of the rectangle arranged in the first image by preset values, and performing screen projection shooting again;

determining the field of view of the VR device to be the length and width of the current rectangle if one of the sides of the rectangle is not in the second image.

2. The visual field test method of the VR device of claim 1, wherein, in the process of increasing the length and width of the rectangle provided in the first image by predetermined values, respectively, and performing the screen-projection photographing again,

and projecting the rectangle with the length and the width respectively increased by the preset numerical value into the first image, and shooting the first image in which the rectangle with the length and the width respectively increased by the preset numerical value is projected again to obtain a second image again.

3. The method of claim 2, wherein, in projecting a rectangle having a length and a width increased by predetermined values, respectively, into the first image,

the center of the rectangle whose length and width are increased by predetermined values, respectively, coincides with the center of the first image.

4. The method of claim 1, wherein, in setting a rectangle along a center of the first image,

the color of a rectangle disposed along the center of the first image is different from the color of the first image.

5. The field of view testing method of the VR device of claim 1, wherein,

the initial length and width of the rectangle are both less than the length and width of the first image.

6. The field of view testing method of the VR device of claim 1, wherein,

finding the four sides of the rectangle in the second image along the four sides of the starting point respectively means finding the four sides of the rectangle in the second image along four directions above, below, left and right of the starting point respectively.

7. A field of view testing system of a VR device, comprising:

the first image acquisition unit is used for shooting an image projected on the VR screen to acquire a first image;

a rectangle setting unit configured to set a rectangle along a center of the first image acquired by the first image acquiring unit, wherein a length and a width of the rectangle are determined according to the length and the width of the first image;

the second image acquisition unit is used for projecting the rectangle set by the rectangle setting unit into the first image, projecting the first image with the rectangle projected on the VR screen, shooting the first image with the rectangle projected on the VR screen and acquiring a second image;

a field-of-view determining unit, configured to find four sides of the rectangle in the second image along the periphery of the starting point, respectively, with a center of the second image acquired by the second image acquiring unit as the starting point, and determine whether all the four sides of the rectangle are in the second image; wherein,

if the four sides of the rectangle are in the second image, respectively increasing the length and the width of the rectangle arranged in the first image by preset values, and performing screen projection shooting again;

and if one side of the rectangle is not in the second image, determining the field of view of the VR device to be the length and the width of the current rectangle.