WO2023036218A1

WO2023036218A1 - Method and apparatus for determining width of viewpoint

Info

Publication number: WO2023036218A1
Application number: PCT/CN2022/117710
Authority: WO
Inventors: 贺曙; 徐万良
Original assignee: 未来科技（襄阳）有限公司
Priority date: 2021-09-08
Filing date: 2022-09-08
Publication date: 2023-03-16
Also published as: CN113781560B; CN113781560A

Abstract

The present application provides a method for determining the width of a viewpoint, comprising: displaying a target image such that a second device photographs the target image in real time to obtain a first group of images and a second group of images, respectively segmenting two images in the first group of images and two images in the second group of images to obtain a first area, a second area, a third area, and a fourth area, and calculating a first pixel average difference between the first area and the second area and a second pixel average difference between the third area and the fourth area; if the first pixel average difference reaches a first preset value, recording first position coordinates when the second device photographs the first group of images; if the second pixel average difference reaches a second preset value, recording second position coordinates when the second device photographs the second group of images; and determining the width of a viewpoint corresponding to a first device according to the first position coordinates, the second position coordinates, and an attachment angle of a grating corresponding to the first device.

Description

Method and device for determining viewpoint width

technical field

The present application belongs to the field of naked-eye 3D, and in particular relates to a method for determining the width of a viewpoint and a device thereof.

Background technique

Naked-eye 3D, short for Autostereoscopy, is a general term for technologies that achieve stereoscopic visual effects without the help of external tools such as polarized glasses.

In the naked-eye 3D system with human eye tracking, the device collects images through the front camera and tracks the position of the human eye, then calculates the viewpoint corresponding to the current position of the human eye, collects images through the set front camera and tracks the human eye The process of positioning needs to determine the width of each viewpoint in the naked-eye 3D system.

At present, the width of the viewpoint is mainly deduced through optical design, but in actual use, a grating is often used on a variety of third-party devices, and it is impossible to obtain the exact optical parameters of the screen of the device, such as glass thickness, optical The thickness of the glue, the size of the assembly gap, etc., which leads to the inability to accurately determine the width of the viewpoint.

Contents of the invention

The purpose of this application is to provide a method and device for determining the width of the viewpoint, which can quickly determine the width of the viewpoint corresponding to the device when the optical parameters of the screen of the device are unknown, and then use the width of the viewpoint to determine the 3D image or 3D image displayed by the device. The video is adjusted to improve the viewing experience of the user.

The first aspect of the embodiment of the present application provides a method for determining the width of a viewpoint, including:

The first device displays the target image in a stereoscopic mode, so that the second device shoots the target image in real time to obtain a first group of images and a second group of images, and respectively The two images and the two images in the second group of images are divided to obtain the first area, the second area, the third area and the fourth area, and the calculation of the first area and the second area The first pixel average difference and the second pixel average difference between the third area and the fourth area, wherein the first group of images and the second group of images are the second device in The different positions are obtained by shooting the target image at the same time with two cameras arranged on the second device, and the two cameras of the second device are on the same horizontal line, and the center distance between the two cameras of the second device is is a preset distance, the first area and the second area correspond to two images in the first group of images, and the third area and the fourth area correspond to the second group of images The two images in the image correspond to each other;

If the first device receives the first coordinate recording instruction sent by the second device when the average difference of the first pixels reaches the first preset value, the first device records the photograph taken by the second device The first position coordinates of the first group of images;

If the first device receives the second coordinate recording instruction sent by the second device when the second pixel average difference reaches a second preset value, the first device records the the second location coordinates when the second group of images was taken;

The first device determines the width of the viewpoint corresponding to the first device according to the first position coordinates, the second position coordinates, and the lamination angle of the grating corresponding to the first device.

The second aspect of the embodiment of the present application provides a method for determining the width of a viewpoint, including:

The second device shoots the target image displayed by the first device in stereo mode in real time to obtain a first group of images and a second group of images, the first group of images and the second group of images are the The second device obtains the target image by shooting the target image simultaneously with two cameras arranged on the second device at different positions, and the two cameras of the second device are at the same horizontal line, and the two cameras of the second device The distance between the centers of the cameras is the preset distance;

The second device respectively segments two images in the first group of images and two images in the second group of images to obtain a first region, a second region, a third region and a fourth region area, wherein the first area and the second area correspond to two images in the first set of images, and the third area and the fourth area correspond to the second set of images The two images in correspond to;

The second device respectively calculates a first pixel average difference between the first area and the second area and a second pixel average difference between the third area and the fourth area;

If the first pixel average difference reaches a first preset value, the second device sends a first coordinate recording instruction to the first device, so that the first device records the first coordinate position, and the The first position coordinates are the coordinates of the position of the second device when capturing the first group of images;

If the second pixel average difference reaches a second preset value, the second device sends a second coordinate recording instruction to the first device, so that the first device records the second position coordinates, and according to The lamination angle of the grating corresponding to the first position coordinate, the second position coordinate and the first device determines the width of the viewpoint corresponding to the first device, and the second position coordinate is the width of the viewpoint corresponding to the first device. The coordinates of the location of the second device when capturing the second group of images.

The third aspect of the embodiment of the present application provides an apparatus for determining a viewpoint width, including a first device, and the first device includes:

a display unit, configured to display the target image in a stereoscopic mode, so that the second device shoots the target image in real time to obtain a first group of images and a second group of images, and respectively compares the first group of images The two images in the image and the two images in the second group of images are divided to obtain the first area, the second area, the third area and the fourth area, and the calculation of the first area and the second The first pixel average difference value of the area and the second pixel average difference value between the third area and the fourth area, wherein the first group of images and the second group of images are the second The device is obtained by simultaneously shooting the target image with two cameras installed on the second device at different positions, and the two cameras of the second device are on the same horizontal line, and the two cameras of the second device The distance between centers is a preset distance, the first area and the second area correspond to two images in the first group of images, the third area and the fourth area correspond to the second The two images in the group image correspond;

A recording unit, configured to record the first coordinate recording instruction sent by the second device when the first pixel average difference reaches a first preset value, if the first device receives the first coordinate recording instruction. The first position coordinates when the second device captures the first group of images; if the first device receives the second set and sends the second pixel average difference value to a second preset value the second coordinate recording instruction, record and record the second position coordinates when the second device captures the second group of images;

The determining unit is configured to determine the width of the viewpoint corresponding to the first device according to the first position coordinates, the second position coordinates, and the lamination angle of the grating corresponding to the first device.

Compared with related technologies, in the embodiments provided in this application, in the embodiments provided in this application, when determining the viewpoint width of the first device, the second device can shoot the first device at different positions Obtaining a plurality of images, and dividing the plurality of images to obtain two image regions, and calculating the pixel average difference of the two image regions, and then when the pixel average difference reaches a preset value, the first A device records the position coordinates of the second device when the preset value is reached, and then the first device calculates the position coordinates of the second device at different positions and the bonding angle of the grating. The width of the corresponding viewpoint, so that when the optical parameters of the screen of the first device are unknown, the width of the corresponding viewpoint of the first device can be quickly determined, and then the stereoscopic display displayed by the first device can be made based on the width of the viewpoint. Image or stereoscopic video can be adjusted to improve user viewing experience.

Description of drawings

Fig. 1 is the functional block diagram that the position indicator of related art constitutes;

Fig. 2 is the structural block diagram of the position detection system provided by the present application;

Fig. 3 is a structural block diagram of the button detection circuit shown in Fig. 2;

Fig. 4 is a structural block diagram of the pressure detection circuit shown in Fig. 2;

5 is a schematic diagram of a data communication transmission benchmark of a digital stylus;

Fig. 6 is a schematic diagram of data communication between a digital stylus and a tablet.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them.

Please refer to FIG. 1, which is a schematic diagram of an embodiment of a method for determining the width of a viewpoint provided by the embodiment of the present application, including:

101. The target image displayed by the first device in stereo mode, so that the second device shoots the target image displayed by the first device in stereo mode in real time to obtain a first group of images and a second group of images, and respectively segment the two images in the first group of images and the two images in the second group of images to obtain the first region, the second region, the third region and the fourth region, and calculate the A first pixel average difference between the first area and the second area and a second pixel average difference between the third area and the fourth area.

In this embodiment, the first group of images and the second group of images are obtained by the second device shooting the target image at different positions through two cameras installed on the second device at the same time , and the two cameras of the second device are on the same horizontal line, the distance between the centers of the two cameras of the second device is a preset distance, the first area and the second area are different from the first group of images corresponding to the two images in the image, the third area and the fourth area correspond to the two images in the second group of images, and the second device has an image acquisition function and a communication function For any terminal device, the target image is a half-black half-color image, and the color in the half-color refers to visible colors such as white, red, green, and yellow. It can be understood that when the second device captures the target image to obtain the first group of images and the second group of images, the first group of images and the second group of images Each image in the image may not only contain the target image, but may also include other content, so what needs to be determined here is the average pixel difference of the screen area, not the average pixel difference of each image value, the screen area is the display area of the target image on the screen of the first device. In addition, while displaying the target image, the first device may also display the location coordinates of the second device in real time on the screen corresponding to the first device, or directly display the location coordinates of the camera of the second device. location coordinates.

102. If the first device receives the first coordinate recording instruction sent by the second device when the first pixel average difference reaches a first preset value, the first device records the second The first location coordinates of the location where the device is when capturing the first group of images.

In this embodiment, the second device divides the first group of images to obtain the first area and the second area, and calculates the After the first pixel average difference, it can be judged whether the first pixel average difference reaches the first preset value, and if the first pixel average difference reaches the first preset value, then the first The second device may send the first coordinate recording instruction, and the first device records the first position coordinates of the position where the second device is at when the first group of images is taken according to the first coordinate recording instruction .

103. If the first device receives the second coordinate recording instruction sent by the second device when the second pixel average difference reaches a second preset value, the first device records the first The second location coordinates of the location where the second device is when capturing the second group of images.

In this embodiment, the second device obtains the third area and the fourth area by segmenting the second group of images, and calculates the After the second pixel average difference, it can be judged whether the second pixel average difference reaches the second preset value, and if the second pixel average difference reaches the second preset value, the first The second device may send the second coordinate recording instruction, and the first device records the second position where the second device is at when the second group of images is taken according to the second coordinate recording instruction. coordinate.

104. The first device determines the width of the viewpoint corresponding to the first device according to the first position coordinates, the second position coordinates, and the lamination angle of the grating corresponding to the first device.

In this embodiment, after the first device records the first position coordinates and the second position coordinates, it can acquire the bonding angle of the corresponding grating of the first device (the bonding angle is the The lamination angle of the grating of the 3D film pasted on the first device, in addition, here is not limited to the way of obtaining the lamination angle of the grating, for example, can be input by the user), and according to the first position coordinates, the second The two position coordinates and the bonding angle determine the width of the viewpoint corresponding to the first device.

In an embodiment, the first device determining the width of the viewpoint corresponding to the first device according to the first position coordinates, the second position coordinates, and the lamination angle of the grating corresponding to the first device includes:

The first device determines the first position of the second device according to the bonding angle and the first position coordinates, and the first position is when the first pixel average difference reaches the first preset the position of the second device at the time of value;

The first device determines a second position of the second device according to the bonding angle and the second position coordinates, and the second position is when the average difference of the second pixels reaches the second preset the position of the second device at the time of value;

The first device determines a width of the viewpoint based on the first position and the second position.

In this embodiment, the first device may calculate the first position by the following formula based on the bonding angle and the first position coordinates, the first position is when the average difference of the first pixels reaches the The position where the second device captures the first group of images when the first preset value is mentioned:

X ₀ ′=x ₀ +(y ₀ -y)*tan(a)

Wherein, X ₀ ′ is the first position, the coordinates of the first position are (x ₀ , y ₀ ), y is a preset constant, and a is the bonding angle;

The first device may calculate the second position by the following formula based on the bonding angle and the second position coordinates, the second position is when the average difference of the second pixels reaches the second preset The position where the second device captures the second group of images when the value is:

X ₁ '=x ₁ +(y ₁ -y)*tan(a);

Wherein, X ₁ ′ is the second position, and the coordinates of the second position are (x ₁ , y ₁ );

After the first device calculates the first position and the second position according to the formula, it can calculate the width of the viewpoint corresponding to the first device by the following formula based on the first position and the second position :

VW=abs(X ₀ ′-X ₁ ′);

Wherein, VW is the width of the viewpoint corresponding to the first device, and abs is an absolute value function.

The calculation of the width of the viewpoint will be described below in conjunction with FIG. 2 . FIG. 2 is a schematic diagram of the calculation of the width of the viewpoint provided by the embodiment of the present application, wherein 201 is the first position coordinate (x ₀ , y _{0 ), and 202 is the first position coordinate (x 0 , y 0} ). Two position coordinates (x ₁ , y ₁ ), 203 is the coordinate of the preset constant y in the coordinate system (it can be understood that the preset constant y can be set to half the width of the screen area, and of course it can also Set according to the actual situation, there is no specific limitation), taking the calculation of the first position X ₀ ′ as an example for illustration, when calculating the first position X ₀ ′, the lamination angle a of the grating is known After obtaining the first position coordinates (x ₀ , y ₀ ), convert the preset constant 203 to the same direction as the Y-axis direction of the first position coordinates, and then use the formula X ₀ ′ =x ₀ +(y ₀ -y)*tan(a) to calculate the first position, similarly the second position can be calculated, and then calculated by the formula VW=abs(X ₀ ′-X ₁ ′) The absolute value of the difference between the first position and the second position, that is, the width of the viewpoint corresponding to the first device.

It should be noted that after the first device obtains the width of the viewpoint corresponding to the first device, based on the width of the viewpoint, the 3D image displayed or the played 3D image when the first device operates in stereo mode The video is adjusted. Specifically, when the first device adjusts the 3D image displayed or the 3D video played when the first device operates in stereoscopic mode based on the width of the viewpoint, the first device may obtain the Corresponding to the width of the grating, then, according to the width of the grating and the width of the viewpoint, determine the arrangement and layout of the viewpoint corresponding to the first device, and adjust the The stereoscopic images displayed by the first device are adjusted while operating in the stereoscopic mode. That is to say, after obtaining the width of the viewpoint, since the width of the grating of the first device is known, the arrangement of the grating of the 3D film pasted on the screen of the first device can be deduced , and then the 3D image displayed or the 3D video played when the first device operates in the stereo mode can be adjusted according to the change of the position of the human eyes, so as to provide users with a better 3D display effect.

It should also be noted that the position of the first device remains unchanged, the second device changes its own position, and the position coordinates of the camera of the second device are tracked by the first device, And record the position coordinates of the second device when changing its position, of course, it can also be in other ways, for example, the position of the second device remains unchanged, and the first device changes its position to record the camera of the second device The location coordinates are not specifically limited, as long as the location coordinates when the second device takes images of the first device at different positions can be recorded. It can be understood that when the position of the detector remains unchanged and the coordinates of the human eyes of the detector are recorded by changing the position of the target device, the specific execution process is as follows:

When the first device displays the target image in stereoscopic mode, the second device takes a picture of the first device, and the screen of the first device displays the position coordinates of the second device (of course The position coordinates of the camera of the second device may be displayed, not specifically limited), the first device adjusts its position until it receives the coordinate recording instruction of the second device, and records the position coordinates of the second device at the current position , the coordinate recording instruction is used by the second device to analyze the image obtained by shooting the first device to obtain the corresponding pixel average difference, and the pixel average difference reaches the first preset value or The second preset value is issued; then continue to adjust the position until the coordinate recording instruction sent by the second device is received again, and record the position coordinates of the second device at the current position, and the coordinate recording instruction is issued by the second device When the second device analyzes the image obtained by shooting the first device to obtain the corresponding pixel average difference value, and the pixel average difference value reaches the first preset value or the second preset value Sent; thus, the position coordinates of two different positions can be obtained, and the width of the viewpoint is calculated according to the position coordinates of the two different positions and the fitting angle.

To sum up, it can be seen that in the embodiments provided by this application, when determining the viewpoint width of the first device, the second device can capture multiple images of the first device at different positions , and segment a plurality of images to obtain two image regions, and calculate the pixel average difference between the two image regions, and then when the pixel average difference reaches a preset value, the first device records the reached The preset value is the position coordinates of the second device, and then the first device calculates the width of the viewpoint corresponding to the first device according to the position coordinates of the second device at different positions and the lamination angle of the grating , so that when the optical parameters of the screen of the first device are unknown, the width of the viewpoint corresponding to the first device can be quickly determined, and then the stereoscopic image or stereoscopic video displayed by the first device can be adjusted according to the width of the viewpoint. Make adjustments to improve user viewing experience.

Please refer to Figure 3. Figure 3 is a schematic diagram of the application scenario provided by the embodiment of the present application. In Figure 3, the position of the first device is fixed, the position of the second device changes, and the first device records the When the pixel average difference value of the image taken by the second device reaches the preset value, the position coordinates of the position of the second device, as shown in FIG. 3 , when it is necessary to determine When the viewing point width of the 3D film is set, the first device 301 displays the target image in stereoscopic mode, and the second device monitors the first device at different positions through two cameras arranged on the second device The device shoots the target image displayed in a stereo mode to obtain the corresponding image, and divides the image to obtain two image areas, and calculates the pixel average difference between the two image areas, and then judges the Whether the pixel average difference reaches the first preset value or the second preset value, if the pixel average difference reaches the first preset value or the second preset value, the The first device 301 sends the coordinate recording instruction, and after the first device 301 receives the coordinate recording instruction, the first device 301 records the position coordinates, as shown in FIG. 3 , the second device is at 302 position, the first pixel average difference value of the image captured by the first device 301 reaches the first preset value, and at this time, the first device 301 receives the first coordinate recording instruction , the first device 301 may record the coordinates of the first position where the second device is at the position 302; then the second device changes its position again and takes another shot of the first device 301, Obtaining the corresponding image, and dividing the image to obtain two image regions, and calculating the pixel average difference of the two image regions, and then determining whether the pixel average difference reaches the second preset value, If the second pixel average difference reaches the second preset value, the second device sends the second coordinate recording instruction to the first device 301, and at this time, the first device 301 The second coordinate recording instruction records the coordinates of the second position. As shown in FIG. preset value, at this time, the second device sends an instruction to record the coordinates of the second position to the first device 301, and the first device 301 records that the second device is in the 303 position according to the second coordinate recording instruction. The second position coordinates when the second device is in the position, and then the first device 301 can use the first position coordinates when the second device is in the position 302, the coordinates when the second device is in the position 303 Calculate the width of the viewpoint corresponding to the first device 301 by the lamination angle of the second position coordinates and the grating corresponding to the first device 301, and then calculate the width of the first device 301 according to the width of the viewpoint. 3D images or 3D videos displayed in stereoscopic mode can be adjusted. Therefore, when the optical parameters of the screen of the first device are unknown, the width of the viewpoint corresponding to the first device 301 can be quickly determined, and then the 3D displayed by the first device 301 can be adjusted according to the width of the viewpoint. Image or 3D video can be adjusted to improve user viewing experience.

It should be noted that, the second device shoots the first device at one position through two cameras installed on the second device to obtain a set of pictures of the first device captured at the position After imaging, the image is directly segmented to obtain the image area, and the pixel average difference corresponding to the image area is calculated, and it is judged whether the pixel average difference reaches the first preset value or the second preset value. If none of the preset values are reached, change the position of the second device and repeat the above steps until the pixel average difference of the image of the first device taken at a certain position reaches the first preset value, and when the first preset value is reached, send the coordinate recording instruction to the first device, so that the first device returns to the corresponding position coordinates, and then continue to adjust the position to perform the above steps, until the pixel average difference value of the image of the first device taken at another location reaches the second preset value, and obtain the location coordinates of the two locations from the first device, as The first location coordinates and the second location coordinates.

The method for determining the viewpoint width provided by the embodiment of the present application is described above from the perspective of the first device in conjunction with FIG. 1 , and the method for determining the viewpoint width provided in the embodiment of the present application is described below from the perspective of the second device in conjunction with FIG. 4 .

Please refer to FIG. 4 in conjunction with FIG. 4. FIG. 4 is a schematic diagram of another embodiment of the method for determining the viewpoint width provided by the embodiment of the present application, including:

401. The second device shoots in real time the target image displayed by the first device in a stereo mode, so as to obtain a first group of images and a second group of images.

In this embodiment, the first group of images and the second group of images are the second device simultaneously shooting the target image at different positions through two cameras set on the second device obtained, and the two cameras of the second device are on the same horizontal line, the distance between the centers of the two cameras of the second device is a preset distance, such as 65mm, and the second device is equipped with an image acquisition function and a communication function For any terminal device, the target image is a half-black half-color image, and the color in the half-color refers to visible colors such as white, red, green, and yellow. That is to say, when it is necessary to determine the width of the viewpoint corresponding to the first device (that is, the width of the viewpoint corresponding to the 3D film covered on the screen of the target device), the first device displays half black and half half in 3D mode. After that, the second device takes pictures of the first device at different positions to obtain the first group of images and the second group of images.

402. The second device respectively segments two images in the first group of images and two images in the second group of images to obtain a first area, a second area, a third area, and Fourth area.

In this embodiment, after the second device obtains the first group of images and the second group of images, it can respectively segment two images in the first group of images to obtain the The first area and the second area, and the two images in the second group of images are segmented to obtain the third area and the fourth area, that is, due to the setting on the second device When the two cameras of the two cameras capture the target image, the image captured by a single camera will include other content besides the target image. The purpose of the segmentation here is to ensure that the first area, the second area , the third area and the fourth area only include the target image, and do not include other content.

403. The second device respectively calculates a first pixel average difference between the first area and the second area and a second pixel average difference between the third area and the fourth area.

In this embodiment, the second device divides the first group of images and the second group of images to obtain the first region, the second region, the third region and the After the fourth area, the first pixel average difference between the first area and the second area can be calculated respectively, and the second pixel average difference between the third area and the fourth area can be calculated value. Specifically, the second device may calculate the first pixel average difference and the second pixel average difference by the following formula:

Wherein, aver_piexl is the average difference value of the first pixel or the average difference value of the second pixel, A is the screen area, Al is the first area or the third area, Ar is the second area or the The fourth area, w is the width of the first area or the width of the third area, h is the height of the second area or the height of the fourth area, the first area and the first area The two areas have the same width and the same height, and the third area and the fourth area have the same width and the same height.

It can be understood that when the second device captures the target image to obtain the first group of images and the second group of images, the first group of images and the second group of images The image may not only contain the target image, but may also include other content, so what needs to be determined here is the average pixel difference value of the screen area, not the pixel average difference value of the first group of images value, the screen area is the display area of the target image on the screen of the first device. In addition, while displaying the target image, the first device may also display the position coordinates of the second device in real time on the screen corresponding to the first device, or directly display the location coordinates of the camera of the second device location coordinates.

404. If the first pixel average difference reaches a first preset value, the second device sends a first coordinate recording instruction to the first device, so that the first device records the first position coordinates.

In this embodiment, after the second device analyzes the first group of images to obtain the first pixel average difference, it can determine whether the first pixel average difference reaches the first preset value, if the first pixel average difference reaches the first preset value, then the second device sends the first coordinate recording instruction to the first device, so that the first device The first coordinate recording instruction records the first position coordinates, wherein the first position coordinates are the coordinates of the position of the second device when capturing the first group of images. That is to say, the first device displays the position coordinates of the second device in real time, and when the second device determines that the average difference of the first pixels reaches the first preset value, it may send a message to the second device A device sends the first coordinate recording instruction, and after receiving the first coordinate recording instruction, the first device may record the position coordinates of the second device where the first group of images is taken .

It can be understood that, when the first pixel average difference value does not reach the first preset value, the second device changes position and shoots the first device again to obtain an image captured after the position change, and analyzing the image until the average pixel difference of the image captured after changing the position reaches the first preset value, sending the first coordinate recording instruction to the first device, so that the The first device records the location coordinates of the location.

405. If the second pixel average difference reaches a second preset value, the second device sends a second coordinate recording instruction to the first device, so that the first device records the second position coordinates, And determine the width of the viewpoint corresponding to the first device according to the first position coordinates, the second position coordinates, and the bonding angle of the grating corresponding to the first device.

In this embodiment, after the second device analyzes the second group of images to obtain the second pixel average difference, it can determine whether the second pixel average difference reaches the second preset value, if the second pixel average difference reaches the second preset value, the second device sends the second coordinate record instruction to the first device, so that the first device records the The second position coordinates, and determine the width of the viewpoint corresponding to the first device according to the first position coordinates, the second position coordinates, and the lamination angle of the grating corresponding to the first device, wherein the The second position coordinates are the coordinates of the position of the second device when capturing the second group of images. That is to say, the first device displays the position coordinates of the second device in real time, and when the second device determines that the average difference of the second pixels reaches the second preset value, it may send a message to the second device A device sends the second coordinate recording instruction, and after receiving the second coordinate recording instruction, the first device can record the position coordinates of the position, and calculate the viewpoint according to the two position coordinates and the lamination angle width.

It can be understood that, when the second pixel average difference value does not reach the second preset value, the second device changes position and shoots the first device again to obtain an image captured after the position change, and analyzing the image until the average pixel difference of the image captured after changing the position reaches the second preset value, and sending the second coordinate recording instruction to the first device, so that the second A device records the location coordinates of the location.

It should be noted that, after the second device captures the first device at a position to obtain the image of the first device captured at the position, it directly analyzes the image to obtain the corresponding pixel average difference, and judge whether the pixel average difference reaches the first preset value or the second preset value, if not, then change the position of the second device and repeat the above steps until it finds The pixel average difference value of the image of the first device captured at a certain position reaches the first preset value, and when the first preset value is reached, sending the first coordinates to the first device Recording instructions, so that the first device records the corresponding position coordinates, and then continues to adjust the position to perform the above steps until the average pixel difference of the image of the first device captured at another position reaches the second preset value, sending the second coordinate record command to the first device, so that the first device records the coordinates of the position, and calculates the width of the viewpoint according to the coordinates of the two positions and the lamination angle.

The method for determining the viewpoint width provided by the embodiment of the present application is described above from the perspectives of the second device and the first device, and the method for determining the viewpoint width provided by the embodiment of the present application is described below from the perspective of interaction between the first device and the second device in conjunction with FIG. 5 Determine the method described.

Please refer to FIG. 5. FIG. 5 is a schematic diagram of another embodiment of the method for determining the viewpoint width provided by the embodiment of the present application, including:

501. The first device displays a target image in a stereoscopic mode.

502. The second device shoots the target image in real time to obtain a first group of images and a second group of images.

503. The second device respectively segments two images in the first group of images and two images in the second group of images to obtain a first area, a second area, a third area, and Fourth area.

504. The second device respectively calculates a first pixel average difference between the first area and the second area and a second pixel average difference between the third area and the fourth area.

It can be understood that steps 501 to 504 are similar to steps 401 to 403 in FIG. 4 , which have been described in detail in FIG. 4 above, and will not be repeated here.

505. If the first pixel average difference reaches a first preset value, the second device sends a first coordinate recording instruction to the first device.

506. The first device records the first location coordinates according to the first coordinate recording instruction.

507. If the second pixel average difference reaches a second preset value, the second device sends a second coordinate recording instruction to the first device.

508. The first device records the second location coordinates according to the second coordinate recording instruction.

It can be understood that steps 505 to 508 are similar to the steps of recording location coordinates in FIG. 1 and FIG. 4 , which have been described in detail in FIG. 1 and FIG. 4 , and will not be repeated here.

509. The first device determines the width of the viewpoint corresponding to the first device according to the first position coordinates, the second position coordinates, and the lamination angle of the grating corresponding to the first device.

It can be understood that step 510 is similar to step 104 in FIG. 1 , which has been described in detail in FIG. 1 above, and details are not repeated here.

It should be noted that, in each of the above embodiments, the width of the viewpoint corresponding to the first device calculated by the first device according to the first position coordinate, the second position coordinate and the lamination angle of the grating is For example, after the first device records the first position coordinates and the second position coordinates, it may send the first position coordinates and the second position coordinates to the second device, the second device calculates the width of the viewpoint corresponding to the first device according to the first position coordinates, the second position coordinates, and the lamination angle of the grating corresponding to the first device, and then the The width of the viewpoint corresponding to the first device is sent to the first device; in addition, the average pixel difference obtained by analyzing the first group of images and the second group of images may also be obtained by the first device Execution, the details are not limited here.

It should also be noted that the above-mentioned Figures 1 to 5 have described in detail the calculation of pixel average difference, position calculation and viewpoint width calculation. The calculation method described in FIG. 5 is the same, but the execution subject is different, and details are not repeated here.

The embodiments of the present application are described above from the perspective of the method for determining the viewpoint width, and the embodiments of the present application are described below from the perspective of the apparatus for determining the viewpoint width. The apparatus for determining the viewpoint width includes a first device 600 and a second device 700 .

Please refer to FIG. 6. FIG. 6 is a schematic diagram of a virtual structure of a first device provided in an embodiment of the present application. The first device 600 includes:

The display unit 601 is configured to display the target image in a stereoscopic mode, so that the second device shoots the target image in real time to obtain a first group of images and a second group of images, and respectively compares the first group of images The two images in the image and the two images in the second group of images are divided to obtain the first area, the second area, the third area and the fourth area, and the calculation of the first area and the second The first pixel average difference between the two regions and the second pixel average difference between the third region and the fourth region, wherein the first group of images and the second group of images are the first group of images The second device is obtained by simultaneously shooting the target image with two cameras installed on the second device at different positions, and the two cameras of the second device are on the same horizontal line, and the two cameras of the second device The distance between centers is a preset distance, the first area and the second area correspond to two images in the first group of images, and the third area and the fourth area correspond to the first group of images The two images in the two sets of images correspond to each other;

The recording unit 602 is configured to: if the first device receives the first coordinate recording instruction sent by the second device when the first pixel average difference reaches a first preset value, the first device records The first position coordinates when the second device captures the first group of images; if the first device receives the second set when the second pixel average difference reaches a second preset value The second coordinate recording instruction sent is to record and record the second position coordinates when the second device captures the second group of images;

The determining unit 603 is configured to determine the width of the viewpoint corresponding to the first device according to the first position coordinates, the second position coordinates, and the lamination angle of the grating corresponding to the first device.

Please refer to FIG. 7, which is a schematic diagram of the virtual structure of the second device provided in the embodiment of the present application. The second device 700 includes:

The photographing unit 701 is configured to photograph the target image displayed by the first device in stereoscopic mode in real time to obtain a first group of images and a second group of images, the first group of images and the second group of images The second device obtains the target image by shooting the target image at different positions through the two cameras installed on the second device at the same time, and the two cameras of the second device are on the same horizontal line, the second device The distance between the centers of the two cameras is the preset distance;

A segmentation unit 702, configured to segment the two images in the first group of images and the two images in the second group of images respectively to obtain the first region, the second region, the third region and the second region Four areas, wherein the first area and the second area correspond to two images in the first set of images, and the third area and the fourth area correspond to the second set of images The two images in the image correspond to each other;

A calculation unit 703, configured to calculate a first pixel average difference between the first area and the second area and a second pixel average difference between the third area and the fourth area;

The transceiver unit 704 is configured to send a first coordinate recording instruction to the first device if the average difference value of the first pixel reaches a first preset value, so that the first device records the first coordinate position. The first position coordinates are the coordinates of the position of the second device when taking the first group of images; if the second pixel average difference reaches a second preset value, a second coordinate recording instruction is sent to the first device, so that the first device records the second position coordinates, and determines according to the first position coordinates, the second position coordinates, and the bonding angle of the corresponding grating The width of the viewpoint corresponding to the first device, and the second position coordinates are the coordinates of the position of the second device when capturing the second group of images.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit it; although the application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the various embodiments of the present application. scope.

Claims

A method for determining the width of a viewpoint, comprising:

The first device displays the target image in a stereoscopic mode, so that the second device shoots the target image in real time to obtain a first group of images and a second group of images, and respectively The two images and the two images in the second group of images are divided to obtain the first area, the second area, the third area and the fourth area, and the calculation of the first area and the second area The first pixel average difference and the second pixel average difference between the third area and the fourth area, wherein the first group of images and the second group of images are the second device in The different positions are obtained by shooting the target image at the same time with two cameras arranged on the second device, and the two cameras of the second device are on the same horizontal line, and the center distance between the two cameras of the second device is is a preset distance, the first area and the second area correspond to two images in the first group of images, and the third area and the fourth area correspond to the second group of images The two images in the image correspond to each other;

If the first device receives the first coordinate recording instruction sent by the second device when the average difference of the first pixels reaches the first preset value, the first device records the photograph taken by the second device The first position coordinates of the first group of images;

If the first device receives the second coordinate recording instruction sent by the second device when the second pixel average difference reaches a second preset value, the first device records the the second location coordinates when the second group of images was taken;

The first device determines the width of the viewpoint corresponding to the first device according to the first position coordinates, the second position coordinates, and the lamination angle of the grating corresponding to the first device.
The method according to claim 1, wherein the first device determines the second The width of the viewpoint corresponding to a device includes:

The first device determines the first position of the second device according to the bonding angle and the first position coordinates, and the first position is when the first pixel average difference reaches the first preset the location of said second device at the time of value;

The first device determines a second position of the second device according to the bonding angle and the second position coordinates, and the second position is when the average difference of the second pixels reaches the second preset the location of said second device at the time of value;

The first device determines a width of the viewpoint based on the first position and the second position.
The method according to claim 2, wherein the first device determining the first position of the second device according to the bonding angle and the first position coordinates comprises:

The first device calculates the first position by using the following formula:

X 0 ′=x 0 +(y 0 -y)*tan(a);

Wherein, X 0 ′ is the first position, the coordinates of the first position are (x 0 , y 0 ), y is a preset constant, and a is the lamination angle.
The method according to claim 3, wherein the first device determining the second position of the second device according to the bonding angle and the second position coordinates comprises:

The first device calculates the second position by using the following formula:

X 1 '=x 1 +(y 1 -y)*tan(a);

Wherein, X 1 ′ is the second position, and the coordinates of the second position are (x 1 , y 1 ).
The method according to claim 4, wherein the first device determining the width of the viewpoint according to the first position and the second position comprises:

The first device calculates the width of the viewpoint by the following formula:

VW=abs(X 0 ′-X 1 ′);

Wherein, VW is the width of the viewpoint, and abs is an absolute value function.
The method according to any one of claims 1 to 5, wherein the method further comprises:

Obtain the width of the raster;

determining the arrangement and layout of the viewpoint corresponding to the first device according to the width of the grating and the width of the viewpoint;

The stereoscopic image displayed when the first device operates in the stereoscopic mode is adjusted according to the arrangement and layout of the viewpoints and the position change of the user's eyes.
A method for determining the width of a viewpoint, comprising:

The second device shoots the target image displayed by the first device in stereo mode in real time to obtain a first group of images and a second group of images, the first group of images and the second group of images are the The second device obtains the target image by shooting the target image simultaneously with two cameras arranged on the second device at different positions, and the two cameras of the second device are at the same horizontal line, and the two cameras of the second device The distance between the centers of the cameras is the preset distance;

The second device respectively segments two images in the first group of images and two images in the second group of images to obtain a first region, a second region, a third region and a fourth region area, wherein the first area and the second area correspond to two images in the first set of images, and the third area and the fourth area correspond to the second set of images The two images in correspond to;

The second device respectively calculates a first pixel average difference between the first area and the second area and a second pixel average difference between the third area and the fourth area;

If the first pixel average difference reaches a first preset value, the second device sends a first coordinate recording instruction to the first device, so that the first device records the first coordinate position, and the The first position coordinates are the coordinates of the position of the second device when capturing the first group of images;

If the second pixel average difference reaches a second preset value, the second device sends a second coordinate recording instruction to the first device, so that the first device records the second position coordinates, and according to The lamination angle of the grating corresponding to the first position coordinate, the second position coordinate and the first device determines the width of the viewpoint corresponding to the first device, and the second position coordinate is the width of the viewpoint corresponding to the first device. The coordinates of the location of the second device when capturing the second group of images.
The method according to claim 7, wherein the second device calculates the first pixel average difference between the first area and the second area and the first pixel average difference between the third area and the fourth area The second pixel average difference consists of:

The second device calculates the first pixel average difference by the following formula:

Wherein, aver_piexl is the average difference value of the first pixel, w is the width of the first region, h is the height of the first region, Al is the first region, and Ar is the second region, so The first area and the second area have the same width and the same height;

The second device calculates the second pixel average difference by the following formula:

Wherein, aver_piexl is the average difference value of the second pixel, w is the width of the third region, h is the height of the third region, Al is the third region, Ar is the fourth region, and The third area and the fourth area have the same width and the same height.
An apparatus for determining a viewpoint width, characterized in that it includes a first device, and the first device includes:

a display unit, configured to display the target image in a stereoscopic mode, so that the second device shoots the target image in real time to obtain a first group of images and a second group of images, and respectively compares the first group of images The two images in the image and the two images in the second group of images are divided to obtain the first area, the second area, the third area and the fourth area, and the calculation of the first area and the second The first pixel average difference value of the area and the second pixel average difference value between the third area and the fourth area, wherein the first group of images and the second group of images are the second The device is obtained by simultaneously shooting the target image with two cameras installed on the second device at different positions, and the two cameras of the second device are on the same horizontal line, and the two cameras of the second device The distance between centers is a preset distance, the first area and the second area correspond to two images in the first group of images, the third area and the fourth area correspond to the second The two images in the group image correspond;

A recording unit, configured to record the first coordinate recording instruction sent by the second device when the first pixel average difference reaches a first preset value, if the first device receives the first coordinate recording instruction. The first position coordinates when the second device captures the first group of images; if the first device receives the second set and sends the second pixel average difference value to a second preset value the second coordinate recording instruction, record and record the second position coordinates when the second device captures the second group of images;

The determining unit is configured to determine the width of the viewpoint corresponding to the first device according to the first position coordinates, the second position coordinates, and the lamination angle of the grating corresponding to the first device.
The apparatus according to claim 9, further comprising a second device, the second device comprising:

a photographing unit, configured to photograph the target image displayed by the first device in a stereoscopic mode in real time, so as to obtain the first group of images and the second group of images;

a segmentation unit, configured to segment the two images in the first group of images and the two images in the second group of images respectively to obtain the first region, the second region, the a third area and said fourth area;

a calculation unit, configured to calculate a first pixel average difference between the first area and the second area and a second pixel average difference between the third area and the fourth area;

a transceiver unit, configured to send the first coordinate recording instruction to the first device if the first pixel average difference reaches the first preset value, so that the first device records the first A coordinate position, the coordinates of the first position being the coordinates of the position of the second device when capturing the first group of images; if the average difference of the second pixels reaches the second preset value, then sending the second coordinate recording instruction to the first device, so that the first device records the second position coordinates, and according to the first position coordinates, the second position coordinates and the first The lamination angle of the grating corresponding to a device determines the width of the viewpoint corresponding to the first device, and the second position coordinates are the coordinates of the position of the second device when shooting the second group of images .