CN110709803A - Data processing method and device - Google Patents

Data processing method and device Download PDF

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Publication number
CN110709803A
CN110709803A CN201780091767.1A CN201780091767A CN110709803A CN 110709803 A CN110709803 A CN 110709803A CN 201780091767 A CN201780091767 A CN 201780091767A CN 110709803 A CN110709803 A CN 110709803A
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acceleration
axial
angular
head
delay time
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CN201780091767.1A
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Chinese (zh)
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韩超
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Shenzhen Royole Technologies Co Ltd
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Shenzhen Royole Technologies Co Ltd
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer

Abstract

A data processing method and device are provided, wherein the method comprises the following steps: the method comprises the steps of obtaining motion state parameters of the head of a user in the process of wearing the head-mounted display equipment, compensating the motion state parameters according to preset delay time, and adjusting a display picture output by the head-mounted display equipment by using the compensated motion state parameters. The embodiment of the invention can realize the synchronization of the display picture and the head motion state of the user, and effectively reduce the vertigo feeling when the head-mounted display equipment is used.

Description

Data processing method and device Technical Field
The invention relates to the technical field of intelligent wearing, in particular to a data processing method and device.
Background
Head-mounted playing devices represented by Virtual Reality (VR) glasses are rapidly developed and increasingly popularized, and the head-mounted playing devices can bring wonderful audio-visual enjoyment to users. When a user rotates the angle of view or moves the head of the user during the process of watching a VR image by using the head-mounted playing device, a processor of the head-mounted playing device receives and processes the motion data of the user's head from the sensor and displays the change on a screen for a certain time, which causes a delay of a displayed picture, and in a full-angle screen such as a VR, the delay causes a dazzling feeling of the user.
Disclosure of Invention
The embodiment of the invention discloses a data processing method and a data processing device, which can realize the synchronization of a display picture and the head motion state of a user and effectively reduce the vertigo feeling when a head-mounted display device is used.
The first aspect of the embodiments of the present invention discloses a data processing method, including:
the method comprises the steps of obtaining motion state parameters of the head of a user in the process of wearing the head-mounted display device.
And compensating the motion state parameters according to a preset delay time.
And adjusting the display picture output by the head-mounted display equipment by using the compensated motion state parameters so as to enable the display picture to be synchronous with the motion state of the head of the user.
A second aspect of the embodiments of the present invention discloses a data processing apparatus, including:
the acquisition module is used for acquiring the motion state parameters of the head of a user in the process of wearing the head-mounted display equipment.
And the compensation module is used for compensating the motion state parameters according to the preset delay time.
And the adjusting module is used for adjusting the display picture output by the head-mounted display equipment by using the compensated motion state parameters so as to enable the display picture to be synchronous with the motion state of the head of the user.
A third aspect of an embodiment of the present invention discloses a computer-readable storage medium, where the storage medium stores instructions that, when executed on a computer, enable the computer to implement the data processing method according to the first aspect.
A fourth aspect of the embodiments of the present invention discloses a computer program product containing instructions, which, when run on a computer, causes the computer to implement the data processing method according to the first aspect.
The embodiment of the invention can acquire the motion state parameter of the head of the user in the process of wearing the head-mounted display equipment, compensate the motion state parameter according to the preset delay time, and adjust the display picture output by the head-mounted display equipment by using the compensated motion state parameter, thereby realizing the synchronization of the display picture and the motion state of the head of the user and effectively reducing the vertigo feeling when the head-mounted display equipment is used.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor.
FIG. 1 is a flow chart of a data processing method according to an embodiment of the present invention;
FIG. 2a is a schematic diagram of a head movement of a user according to an embodiment of the present invention;
FIG. 2b is a schematic diagram of another head movement of a user according to the present disclosure;
fig. 3 is a schematic structural diagram of a data processing apparatus according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the invention discloses a data processing method and a data processing device, which can realize the synchronization of a display picture and the head motion state of a user and effectively reduce the vertigo feeling when a head-mounted display device is used.
The head-mounted display device in the embodiment of the invention can also be called as video glasses, glasses type displays, portable cinemas and the like, and can realize the playing of multimedia files, including 3D images, 3D videos and the like.
Fig. 1 is a schematic flow chart of a data processing method according to an embodiment of the present invention. The data processing method described in this embodiment includes:
101. the head-mounted display equipment acquires the motion state parameters of the head of a user in the process of wearing the head-mounted display equipment.
Wherein, the head of the user is likely to move during the process of wearing the head-mounted display device to watch the display picture (such as 3D video). As shown in fig. 2a, the user wears the head-mounted display device to swing the head to the left or the right, but may swing the head to the front or the back. As also shown in fig. 2b, the user wearing the head mounted display device translates left or right, but may also translate forward or backward. The above motion forms are only examples, and the head of the user may make any form of motion in an actual application scene.
Specifically, a sensor configured for the head-mounted display device may collect motion state parameters of the head of the user during wearing of the head-mounted display device, and a processor of the head-mounted display device reads the collected motion state parameters of the head of the user from the sensor, or the sensor reports the collected motion state parameters of the head of the user to the processor.
The motion state parameter may specifically include at least one of an angular velocity, an angular acceleration, an axial velocity, and an axial acceleration. As shown in fig. 2a, the motion state parameters may specifically include an angular velocity ω and an angular acceleration a of the user during head swingingω. As also shown in fig. 2b, the motion state parameters may specifically also include an axial velocity v and an axial acceleration a of the user while translating the headv。
In a possible implementation manner, the motion of the head of the user can be generally considered to include both the swing and the translation, that is, the motion state parameters specifically include: angular velocity omega and angular acceleration a corresponding to swing headωAnd the corresponding axial velocity v andaxial acceleration av。
The sensor may be a gravity sensor, a three-axis acceleration sensor, a gyroscope, or the like.
102. And the head-mounted display equipment compensates the motion state parameters according to a preset delay time.
The preset delay time specifically refers to a time period from the movement of the head of the user to the adjustment of the display screen of the head-mounted display device, that is, a time period from the movement of the head of the user to the reflection of the movement to the change of the display interface. The specific value of the preset delay period is mainly related to the performance of the processors, and can be considered equal on the same type of processors.
Specifically, the head-mounted display device obtains the motion state parameter and analyzes the motion state parameter, and then reflects the motion of the head of the user to the display interface, which takes the preset delay time, if the motion state parameter obtained from the sensor is directly used to adjust the display frame output by the head-mounted display device, the change of the display frame is easy to lag behind the motion state of the head of the user, so that the head-mounted display device can compensate the obtained motion state parameter, namely at least one of the angular velocity, the angular acceleration, the axial velocity and the axial acceleration, according to the preset delay time.
103. And the head-mounted display equipment adjusts the output display picture by utilizing the compensated motion state parameters so as to enable the display picture to be synchronous with the motion state of the head of the user.
Specifically, the head-mounted display device adjusts the output display frame by using the compensated motion state parameters (angular velocity and/or axial velocity), so that the change of the display frame can keep up with the motion state of the head of the user, and the display frame is synchronized with the motion state of the head of the user.
In one possible implementation, the motion state parameters may include an angular velocity ω and an angular acceleration aωThe angular velocity ω may specifically include three axes (i.e., X-axis, Y-axis, Z-axis)Axial) direction, angular acceleration aωSpecifically, angular accelerations in three (i.e., X, Y, and Z) axes may be included, and the embodiment of the present invention is described by taking compensation of angular velocity and/or angular acceleration in a single axis direction as an example. The head-mounted display device can be used for delaying for a period of time (denoted as T) according to the preset delay timedelay) And angular acceleration aωThe angular velocity ω is compensated for. For example, the head mounted display device delays for a predetermined delay time period TdelayAnd angular acceleration aωDetermining a compensation amount V omega for the angular velocity omega, and V omega is aω×TdelayThe angular velocity ω is further compensated by the angular velocity compensation amount V ω, and the compensated angular velocity is denoted by ω ', and ω' ═ ω + V ω ═ ω + aω×Tdelay。
In a possible implementation manner, whether the angular acceleration changes or not is considered, and if the angular acceleration changes, the angular acceleration is compensated first, and then the angular velocity is compensated by the compensated angular acceleration, so as to improve the accuracy of angular velocity compensation. It is assumed that the angular acceleration in the motion state parameter specifically includes the currently acquired first angular acceleration aω1And a second angular acceleration a acquired in advanceω2If the first angular acceleration changes relative to the second angular acceleration, i.e. aω1And aω2When the angular accelerations are not equal to each other, the head-mounted display device may first obtain the second angular acceleration aω2Rate of change RaωAccording to a predetermined delay period TdelayAnd a second angular acceleration aω2Rate of change RaωFor the first angular acceleration aω1Compensating, and recording the compensated first angular acceleration as aω1′And a is aω1′＝aω1+Raω×TdelayThen according to the preset delay time TdelayAnd a compensated first angular acceleration aω1′Determining a compensation amount V omega for the angular velocity omega, and V omega is aω1′×Tdelay＝(aω1+Raω×Tdelay)×TdelayFurther, the angular velocity ω is compensated by the angular velocity compensation amount V ω, and the compensated angular velocity is denoted by ω ', and ω' ═ ω + V ω ═ ω + (a)ω1+Raω×Tdelay)×Tdelay＝ω+aω1×Tdelay+Raω×Tdelay 2。
In one possible implementation, the second angular acceleration aω2Angular acceleration before the current time n x T, a second angular acceleration aω2Rate of change RaωSpecifically, the second angular acceleration a may beω2Average rate of change Ra within a preset statistical time period n x TωAnd Ra isω＝(aω1-aω2) And/n × T, wherein T is the time interval for the processor to read the motion state parameter from the sensor, and n is a positive integer.
Similarly, in one possible implementation, the motion state parameters may include axial velocity v and axial acceleration avThe axial velocity v may specifically include axial velocity in the directions of three axes (i.e., X-axis, Y-axis, Z-axis), and axial acceleration avThe axial acceleration in three-axis (i.e. X-axis, Y-axis, Z-axis) directions may be specifically included, and the embodiment of the present invention is described by taking compensation of axial velocity and/or axial acceleration in a single-axis direction as an example. The head-mounted display device can be used for delaying for a period of time (denoted as T) according to the preset delay timedelay) And axial acceleration avThe axial speed v is compensated. For example, the head mounted display device delays for a predetermined delay time period TdelayAnd axial acceleration avA compensation quantity Vv for the axial speed v is determined, and Vv ═ av×TdelayThe axial speed v is further compensated by a compensation amount Vv of the axial speed, where the compensated axial speed is denoted by v ', and v' ═ v + Vv ═ v + av×Tdelay。
In a possible implementation manner, whether the axial acceleration is changing or not needs to be considered, if the axial acceleration is changing, the axial acceleration is compensated firstly, and then the axial speed is compensated by the compensated axial acceleration, so that the accuracy of compensating the axial speed is improved. It is assumed that the axial acceleration in the motion state parameter specifically includes the currently acquired first axial acceleration av1And a second axial acceleration a acquired in advancev2If the first axis is plusThe speed being varied with respect to the second axial acceleration, i.e. av1And av2When the first axial acceleration a is not equal to the second axial acceleration a, the head-mounted display device may first obtain the second axial acceleration av2Rate of change RavAccording to a predetermined delay period TdelayAnd a second axial acceleration av2Rate of change RavFor the first axial acceleration av1Compensating, and recording the compensated first axial acceleration as av1′And a is av1′＝av1+Rav×TdelayThen according to the preset delay time TdelayAnd a compensated first axial acceleration av1′Determining a compensation quantity Vv for the axial speed v, and Vv ═ av1′×Tdelay＝(av1+Rav×Tdelay)×TdelayThe axial speed v is further compensated by a compensation amount Vv of the axial speed, where the compensated axial speed is denoted by v ', and v' ═ v + Vv ═ v + (a)v1+Rav×Tdelay)×Tdelay＝v+av1×Tdelay+Rav×Tdelay 2。
In one possible implementation, the second axial acceleration av2For the axial acceleration before the current time n x T, the second axial acceleration av2Rate of change RavIn particular, the second axial acceleration av2Average rate of change Ra within a preset statistical time period n x TvAnd Ra isv＝(av1-av2) And/n × T, wherein T is the time interval for the processor to read the motion state parameter from the sensor, and n is a positive integer.
It should be noted that the compensation methods for the angular velocity, the angular acceleration, the axial velocity, and the axial acceleration are merely examples, and include, but are not limited to, the compensation methods described above.
In the embodiment of the invention, the head-mounted display equipment can acquire the motion state parameters of the head of a user in the process of wearing the head-mounted display equipment, such as angular velocity, angular acceleration, axial velocity, axial acceleration and the like, the motion state parameters are compensated according to the preset delay time, and the display picture output by the head-mounted display equipment is adjusted by utilizing the compensated motion state parameters, so that the synchronization of the display picture and the motion state of the head of the user can be realized, and the vertigo feeling when the head-mounted display equipment is used is effectively reduced.
Fig. 3 is a schematic structural diagram of a data processing apparatus according to an embodiment of the present invention. The data processing apparatus described in this embodiment includes:
an obtaining module 301, configured to obtain a motion state parameter of a head of a user in a process of wearing the head-mounted display device.
The compensation module 302 is configured to compensate the motion state parameter according to a preset delay duration.
An adjusting module 303, configured to adjust a display frame output by the head-mounted display device by using the compensated motion state parameter, so that the display frame is synchronized with the motion state of the head of the user.
In some possible embodiments, the motion state parameter includes at least one of an angular velocity, an angular acceleration, an axial velocity, and an axial acceleration.
In some possible embodiments, the motion state parameters include the angular velocity and the angular acceleration, and the compensation module 302 is specifically configured to:
and determining the compensation amount of the angular velocity according to the preset delay time and the angular acceleration.
And compensating the angular velocity by using the compensation amount of the angular velocity.
In some possible embodiments, the angular acceleration includes a first angular acceleration obtained currently and a second angular acceleration obtained previously, and the compensation module 302 is specifically configured to:
and if the first angular acceleration changes relative to the second angular acceleration, compensating the first angular acceleration according to a preset delay time and the change rate of the second angular acceleration.
And determining the compensation amount of the angular velocity according to the preset delay time and the compensated first angular acceleration.
In some possible embodiments, the rate of change of the second angular acceleration is an average rate of change of the second angular acceleration over a preset statistical time period.
In some possible embodiments, the motion state parameters include the axial velocity and the axial acceleration, and the compensation module 302 is specifically configured to:
and determining the compensation amount of the axial speed according to the preset delay time and the axial acceleration.
And compensating the axial speed by using the compensation amount of the axial speed.
In some possible embodiments, the axial acceleration includes a first currently acquired axial acceleration and a second previously acquired axial acceleration, and the compensation module 302 is specifically configured to:
and if the first axial acceleration changes relative to the second axial acceleration, compensating the first axial acceleration according to a preset delay time and the change rate of the second axial acceleration.
And determining the compensation amount of the axial speed according to the preset delay time and the compensated first axial acceleration.
In some possible embodiments, the rate of change of the second axial acceleration is an average rate of change of the second axial acceleration over a preset statistical time period.
In some possible embodiments, the preset delay time period is a time period from the head of the user moving to the adjustment of the display screen.
It can be understood that the functions of the functional modules of the data processing apparatus in this embodiment may be specifically implemented according to the method in the foregoing method embodiment, and the specific implementation process may refer to the relevant description of the foregoing method embodiment, which is not described herein again.
In the embodiment of the present invention, the obtaining module 301 may obtain a motion state parameter of the head of the user during wearing the head-mounted display device, the compensating module 302 compensates the motion state parameter according to a preset delay time, and the adjusting module 303 adjusts the display frame output by the head-mounted display device by using the compensated motion state parameter, so as to achieve synchronization between the display frame and the motion state of the head of the user, and effectively reduce vertigo when the head-mounted display device is used.
An embodiment of the present invention further provides a computer-readable storage medium, where the storage medium stores instructions that, when executed on a computer, cause the computer to implement the above-mentioned method embodiment.
Embodiments of the present invention also provide a computer program product containing instructions, which when run on a computer, cause the computer to implement the above-described method embodiments.
It should be noted that, for simplicity of description, the above-mentioned embodiments of the method are described as a series of acts or combinations, but those skilled in the art will recognize that the present invention is not limited by the order of acts, as some steps may occur in other orders or concurrently in accordance with the invention. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and modules referred to are not necessarily required by the invention.
Those skilled in the art will appreciate that all or part of the steps in the methods of the above embodiments may be implemented by associated hardware instructed by a program, which may be stored in a computer-readable storage medium, and the storage medium may include: flash disks, Read-Only memories (ROMs), Random Access Memories (RAMs), magnetic or optical disks, and the like.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (20)

  1. A data processing method, comprising:
    acquiring motion state parameters of the head of a user in the process of wearing the head-mounted display equipment;
    compensating the motion state parameters according to a preset delay time;
    and adjusting the display picture output by the head-mounted display equipment by using the compensated motion state parameters so as to enable the display picture to be synchronous with the motion state of the head of the user.
  2. The method of claim 1, wherein the state of motion parameter comprises at least one of angular velocity, angular acceleration, axial velocity, and axial acceleration.
  3. The method of claim 2, wherein the motion state parameters include the angular velocity and the angular acceleration, and wherein compensating the motion state parameters according to a preset delay period comprises:
    determining the compensation amount of the angular velocity according to the preset delay time and the angular acceleration;
    and compensating the angular velocity by using the compensation amount of the angular velocity.
  4. The method according to claim 3, wherein the angular acceleration includes a first angular acceleration acquired currently and a second angular acceleration acquired in advance, and the determining the compensation amount for the angular velocity according to the preset delay period and the angular acceleration includes:
    if the first angular acceleration changes relative to the second angular acceleration, compensating the first angular acceleration according to a preset delay time and the change rate of the second angular acceleration;
    and determining the compensation amount of the angular velocity according to the preset delay time and the compensated first angular acceleration.
  5. The method of claim 4, wherein the rate of change of the second angular acceleration is an average rate of change of the second angular acceleration over a preset statistical time period.
  6. The method of claim 2, wherein the kinematic state parameters include the axial velocity and the axial acceleration, and wherein compensating the kinematic state parameters according to a preset delay period comprises:
    determining the compensation amount of the axial speed according to the preset delay time and the axial acceleration;
    and compensating the axial speed by using the compensation amount of the axial speed.
  7. The method of claim 6, wherein the axial acceleration comprises a first currently acquired axial acceleration and a second previously acquired axial acceleration, and the determining the compensation amount for the axial velocity according to the preset delay time and the axial acceleration comprises:
    if the first axial acceleration changes relative to the second axial acceleration, compensating the first axial acceleration according to a preset delay time and the change rate of the second axial acceleration;
    and determining the compensation amount of the axial speed according to the preset delay time and the compensated first axial acceleration.
  8. The method of claim 7, wherein the rate of change of the second axial acceleration is an average rate of change of the second axial acceleration over a preset statistical time period.
  9. The method according to any one of claims 1 to 8, wherein the preset delay time is a time from the head movement of the user to the adjustment of the display screen.
  10. A data processing apparatus, comprising:
    the acquisition module is used for acquiring the motion state parameters of the head of a user in the process of wearing the head-mounted display equipment;
    the compensation module is used for compensating the motion state parameters according to a preset delay time;
    and the adjusting module is used for adjusting the display picture output by the head-mounted display equipment by using the compensated motion state parameters so as to enable the display picture to be synchronous with the motion state of the head of the user.
  11. The apparatus of claim 10, wherein the state of motion parameter comprises at least one of angular velocity, angular acceleration, axial velocity, and axial acceleration.
  12. The apparatus according to claim 11, wherein the motion state parameters include the angular velocity and the angular acceleration, and the compensation module is specifically configured to:
    determining the compensation amount of the angular velocity according to the preset delay time and the angular acceleration;
    and compensating the angular velocity by using the compensation amount of the angular velocity.
  13. The apparatus according to claim 12, wherein the angular acceleration includes a first angular acceleration currently acquired and a second angular acceleration previously acquired, and the compensation module is specifically configured to:
    if the first angular acceleration changes relative to the second angular acceleration, compensating the first angular acceleration according to a preset delay time and the change rate of the second angular acceleration;
    and determining the compensation amount of the angular velocity according to the preset delay time and the compensated first angular acceleration.
  14. The apparatus of claim 13, wherein the rate of change of the second angular acceleration is an average rate of change of the second angular acceleration over a preset statistical time period.
  15. The apparatus of claim 11, wherein the kinematic state parameters include the axial velocity and the axial acceleration, and wherein the compensation module is specifically configured to:
    determining the compensation amount of the axial speed according to the preset delay time and the axial acceleration;
    and compensating the axial speed by using the compensation amount of the axial speed.
  16. The apparatus according to claim 15, wherein the axial acceleration comprises a currently acquired first axial acceleration and a previously acquired second axial acceleration, and the compensation module is specifically configured to:
    if the first axial acceleration changes relative to the second axial acceleration, compensating the first axial acceleration according to a preset delay time and the change rate of the second axial acceleration;
    and determining the compensation amount of the axial speed according to the preset delay time and the compensated first axial acceleration.
  17. The apparatus of claim 16, wherein the rate of change of the second axial acceleration is an average rate of change of the second axial acceleration over a preset statistical time period.
  18. The device according to any one of claims 10 to 17, wherein the preset delay time is a time from the head movement of the user to the adjustment of the display screen.
  19. A computer-readable storage medium, characterized in that the storage medium stores instructions which, when run on a computer, cause the computer to implement the data processing method of any one of claims 1 to 9.
  20. A computer program product comprising instructions which, when run on a computer, cause the computer to carry out the data processing method according to any one of claims 1 to 9.
CN201780091767.1A 2017-11-14 2017-11-14 Data processing method and device Pending CN110709803A (en)

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