CN114816065B - Screen backlight adjusting method, virtual reality device and readable storage medium - Google Patents
Screen backlight adjusting method, virtual reality device and readable storage medium Download PDFInfo
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- CN114816065B CN114816065B CN202210461411.5A CN202210461411A CN114816065B CN 114816065 B CN114816065 B CN 114816065B CN 202210461411 A CN202210461411 A CN 202210461411A CN 114816065 B CN114816065 B CN 114816065B
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- 238000000034 method Methods 0.000 title claims abstract description 51
- 210000001747 pupil Anatomy 0.000 claims abstract description 195
- 238000013507 mapping Methods 0.000 claims description 18
- 210000001508 eye Anatomy 0.000 abstract description 27
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 208000003464 asthenopia Diseases 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 210000005252 bulbus oculi Anatomy 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 210000004087 cornea Anatomy 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 230000004424 eye movement Effects 0.000 description 1
- 210000000744 eyelid Anatomy 0.000 description 1
- 238000001028 reflection method Methods 0.000 description 1
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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
- G06F3/011—Arrangements for interaction with the human body, e.g. for user immersion in virtual reality
- G06F3/013—Eye tracking input arrangements
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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
- G06F3/048—Interaction techniques based on graphical user interfaces [GUI]
- G06F3/0484—Interaction techniques based on graphical user interfaces [GUI] for the control of specific functions or operations, e.g. selecting or manipulating an object, an image or a displayed text element, setting a parameter value or selecting a range
- G06F3/04847—Interaction techniques to control parameter settings, e.g. interaction with sliders or dials
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/10—Intensity circuits
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/01—Indexing scheme relating to G06F3/01
- G06F2203/011—Emotion or mood input determined on the basis of sensed human body parameters such as pulse, heart rate or beat, temperature of skin, facial expressions, iris, voice pitch, brain activity patterns
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/01—Indexing scheme relating to G06F3/01
- G06F2203/012—Walk-in-place systems for allowing a user to walk in a virtual environment while constraining him to a given position in the physical environment
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- Computer Hardware Design (AREA)
- Eye Examination Apparatus (AREA)
Abstract
The invention relates to the technical field of display control of VR equipment, in particular to a screen backlight adjusting method, virtual reality equipment and a readable storage medium, wherein the method comprises the following steps: determining pupil size according to the acquired pupil image; and adjusting the backlight brightness of the VR equipment according to the pupil size, wherein when the pupil size is larger than a threshold value, the backlight brightness of the VR equipment is reduced, and when the pupil size is smaller than the threshold value, the backlight brightness of the VR equipment is increased. The backlight brightness of the VR equipment is adjusted through the pupil size, so that the power consumption of a screen can be effectively reduced while the excessive fatigue of eyes of a user is avoided, the standby time of VR products is prolonged, the contrast of screen pictures can be effectively improved, and the experience of the user is enhanced.
Description
Technical Field
The invention relates to the technical field of display control of VR equipment, in particular to a screen backlight adjusting method, virtual reality equipment and a readable storage medium.
Background
VR (Virtual Reality) headsets are devices that use a head-mounted display to seal a person's vision to the outside world, guiding the user to create a feeling of being in a Virtual environment. To avoid excessive eye loss when the user wears the VR headset, the display of the headset needs to adjust the screen backlight to prevent the user from being in an excessively bright or excessively dark, uncomfortable light environment for a long period of time.
The screen backlight adjustment mode of the electronic device in the market is to adjust according to the ambient light around the user, that is, obtain the ambient light intensity around the user through a photosensitive sensor, and increase or decrease the backlight of the screen according to the ambient light intensity.
However, this kind of adjustment mode is only applicable to the condition that the screen of equipment is in same space with the external world, to VR head-mounted device, its screen is in two relatively independent spaces with external environment light, and VR equipment can not directly adjust the backlight of screen according to external environment light, therefore, in the relevant technical scheme, electronic equipment is difficult to be applicable to VR equipment through the mode that the ambient light adjusted the screen backlight.
The foregoing is provided merely for the purpose of facilitating understanding of the technical solutions of the present invention and is not intended to represent an admission that the foregoing is prior art.
Disclosure of Invention
The invention mainly aims to provide a method for adjusting screen backlight, which aims to solve the problem of poor user product experience.
In order to achieve the above object, the present invention provides a method for adjusting a screen backlight, including:
determining pupil size according to the acquired pupil image;
And adjusting the backlight brightness of the VR equipment according to the pupil size, wherein when the pupil size is larger than a threshold value, the backlight brightness of the VR equipment is reduced, and when the pupil size is smaller than the threshold value, the backlight brightness of the VR equipment is increased.
Optionally, the step of determining the pupil size according to the acquired pupil image includes:
extracting pupil parameter information in the pupil image;
Establishing a mapping model corresponding to the pupil according to the pupil parameter information;
and determining the pupil size of the wearer at the current moment according to the mapping model.
Optionally, after the step of determining the pupil size according to the acquired pupil image, the method includes:
Determining a gaze point location of the wearer based on an eye tracking technique;
Determining a backlight area needing to adjust the backlight brightness according to the fixation point position;
and adjusting the backlight brightness in the backlight area.
Optionally, the step of determining the backlight area needing to adjust brightness according to the gaze point position includes:
Establishing a mapping relation between the gaze point position and a screen of the VR device;
determining a gaze location associated with the gaze point location in the VR screen based on the mapping relationship;
and determining an adjusting area taking the gazing position as a center based on a preset range parameter, and taking the adjusting area as the backlight area needing to adjust the backlight brightness.
Optionally, after the step of determining the gaze point position of the wearer based on the eye tracking technique, the method further comprises:
Determining whether the fixation point position is within a preset backlight adjustment area range;
When the fixation point position is within the range of the preset backlight adjusting area, executing the step of determining a backlight area needing to adjust the backlight brightness according to the fixation point position;
otherwise, the backlight brightness is reduced based on the preset linear relation.
Optionally, after the step of determining the pupil size according to the acquired pupil image, the method further includes:
Obtaining a reference pupil size;
Determining the reference backlight brightness corresponding to the reference pupil size;
And adjusting the backlight brightness according to the relative size relation between the reference pupil size and the pupil size based on the reference backlight brightness.
Optionally, the step of adjusting the backlight brightness according to the relative size relationship between the reference pupil size and the pupil size based on the reference backlight brightness includes:
Acquiring the current backlight brightness corresponding to the pupil size;
determining a brightness adjustment interval from the current backlight brightness to the reference backlight brightness according to the relative size relation between the reference pupil size and the pupil size, wherein the brightness adjustment interval is a positive interval when the pupil size is larger than the pupil size, is a negative interval when the pupil size is smaller than the pupil size, and is a null interval when the pupil size is equal to the pupil size;
and adjusting the backlight brightness according to the brightness adjustment interval, wherein when the pupil size is equal to the reference pupil size, the adjustment action is stopped.
Optionally, before the step of obtaining the reference pupil size, the method further includes:
Collecting the pupil image of the wearer under preset brightness, wherein the preset brightness is the light brightness of the pupil of the wearer under a relatively natural state;
and taking the pupil size corresponding to the pupil image as the reference pupil size.
In addition, the present invention also provides a virtual reality device, including: the device comprises a memory, a processor and a screen backlight adjusting program which is stored in the memory and can run on the processor, wherein the screen backlight adjusting program realizes the steps of the screen backlight adjusting method according to any one of the above when being executed by the processor.
Furthermore, the present invention provides a computer-readable storage medium storing a screen backlight adjustment program which, when executed by a processor, implements the steps of the screen backlight adjustment method described in the above embodiments.
The embodiment of the invention provides a method for adjusting screen backlight, virtual reality equipment and a computer readable storage medium, wherein the method comprises the following steps: determining pupil size according to the acquired pupil image; and adjusting the backlight brightness of the VR equipment according to the pupil size, wherein when the pupil size is larger than a threshold value, the backlight brightness of the VR equipment is reduced, and when the pupil size is smaller than the threshold value, the backlight brightness of the VR equipment is increased. The backlight brightness of the VR equipment is adjusted through the pupil size, so that the power consumption of a screen can be effectively reduced while the excessive fatigue of eyes of a user is avoided, the standby time of VR products is prolonged, the contrast of screen pictures can be effectively improved, and the experience of the user is enhanced.
Drawings
Fig. 1 is a schematic hardware architecture diagram of a device for adjusting screen backlight according to an embodiment of the present invention;
FIG. 2 is a flowchart of a first embodiment of a method for adjusting a screen backlight according to the present invention;
FIG. 3 is a flowchart of a second embodiment of a method for adjusting a screen backlight according to the present invention;
Fig. 4 is a detailed flowchart of step S70 in the second embodiment of the method for adjusting a screen backlight of the present invention.
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
It should be understood that the drawings of the present invention illustrate exemplary embodiments of the invention, and that the invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
As an implementation, the adjustment device of the screen backlight may be as shown in fig. 1.
The embodiment of the invention relates to a device for adjusting screen backlight, which comprises: a processor 101, such as a CPU, a memory 102, and a communication bus 103. Wherein the communication bus 103 is used to enable connected communication among the components.
The memory 102 may be a high-speed RAM memory or a stable memory (non-volatilememory), such as a disk memory. As shown in fig. 1, a screen backlight adjustment program may be included in a memory 102 as a computer-readable storage medium; and the processor 101 may be configured to call up a screen backlight adjustment program stored in the memory 102 and perform the following operations:
determining pupil size according to the acquired pupil image;
and adjusting the backlight brightness of the VR equipment according to the pupil size.
In one embodiment, the processor 101 may be configured to call up a screen backlight adjustment program stored in the memory 102 and perform the following operations:
extracting pupil parameter information in the pupil image;
Establishing a mapping model corresponding to the pupil according to the pupil parameter information;
and determining the pupil size of the wearer at the current moment according to the mapping model.
In one embodiment, the processor 101 may be configured to call up a screen backlight adjustment program stored in the memory 102 and perform the following operations:
Determining a gaze point location of the wearer based on an eye tracking technique;
Determining a backlight area needing to adjust the backlight brightness according to the fixation point position;
and adjusting the backlight brightness in the backlight area.
In one embodiment, the processor 101 may be configured to call up a screen backlight adjustment program stored in the memory 102 and perform the following operations:
Establishing a mapping relation between the gaze point position and a screen of the VR device;
determining a gaze location associated with the gaze point location in the VR screen based on the mapping relationship;
and determining an adjusting area taking the gazing position as a center based on a preset range parameter, and taking the adjusting area as the backlight area needing to adjust the backlight brightness.
In one embodiment, the processor 101 may be configured to call up a screen backlight adjustment program stored in the memory 102 and perform the following operations:
Determining whether the fixation point position is within a preset backlight adjustment area range;
When the fixation point position is within the range of the preset backlight adjusting area, executing the step of determining a backlight area needing to adjust the backlight brightness according to the fixation point position;
otherwise, the backlight brightness is reduced based on the preset linear relation.
In one embodiment, the processor 101 may be configured to call up a screen backlight adjustment program stored in the memory 102 and perform the following operations:
Obtaining a reference pupil size;
Determining the reference backlight brightness corresponding to the reference pupil size;
And adjusting the backlight brightness according to the relative size relation between the reference pupil size and the pupil size based on the reference backlight brightness.
In one embodiment, the processor 101 may be configured to call up a screen backlight adjustment program stored in the memory 102 and perform the following operations:
Acquiring the current backlight brightness corresponding to the pupil size;
determining a brightness adjustment interval from the current backlight brightness to the reference backlight brightness according to the relative size relation between the reference pupil size and the pupil size, wherein the brightness adjustment interval is a positive interval when the pupil size is larger than the pupil size, is a negative interval when the pupil size is smaller than the pupil size, and is a null interval when the pupil size is equal to the pupil size;
and adjusting the backlight brightness according to the brightness adjustment interval, wherein when the pupil size is equal to the reference pupil size, the adjustment action is stopped.
In one embodiment, the processor 101 may be configured to call up a screen backlight adjustment program stored in the memory 102 and perform the following operations:
Collecting the pupil image of the wearer under preset brightness, wherein the preset brightness is the light brightness of the pupil of the wearer under a relatively natural state;
and taking the pupil size corresponding to the pupil image as the reference pupil size.
Based on the hardware architecture of the screen backlight adjusting device based on the VR device display control technology, the embodiment of the screen backlight adjusting method is provided.
The invention relates to a technical implementation for adjusting screen backlight in VR equipment by utilizing an eyeball tracking technology. The invention captures the gaze point position and pupil size of the user by utilizing the eye tracking technology, judges the area range of backlight adjustment according to the gaze point position of the user, and judges the brightness of the backlight adjustment according to the size of the gaze point pupil of the user. The design can prevent the user from being in an environment with too bright or too dark uncomfortable light for a long time when the user is immersed in the use scene, so that the eye discomfort of the user is caused, and the eyes of the user are protected. Meanwhile, the backlight brightness of a certain area can be accurately adjusted according to the fixation point, so that the power consumption of a screen can be greatly reduced, and the experience of a user is improved.
Referring to fig. 2, in a first embodiment, the method for adjusting screen backlight includes the steps of:
step S10, determining the pupil size according to the acquired pupil image;
In this embodiment, an optical camera built in the VR device can collect an image of the pupil of the eye of the wearer, and determine the pupil size of the wearer at the current moment according to the image.
Optionally, the pupil size may be determined by extracting pupil parameter information in the pupil image and establishing a mapping model corresponding to the pupil parameter information. The automatic determination module of pupil size is arranged in the VR equipment, the module can comprise an image processing module and an image calculation module, the image processing module extracts a light beam image from the pupil image, the image calculation module measures the diameter size of the light beam in the light beam image and the diameter size of the pupil in the pupil image, then a mapping relation is constructed between the diameter size of the light beam and the diameter size of the pupil to obtain corresponding diameter proportion data, and finally the corresponding pupil size is calculated according to the diameter proportion data.
Optionally, when the user just wears the VR device but does not yet turn on the VR screen, the VR device uses the pupil size of the pupil image acquired in this scene as the reference pupil size of the wearer, and the reference pupil size is used by the device to determine whether the eyes of the user are in a relatively comfortable light environment. At this time, the polishing device in the VR device emits light with preset brightness, acquires the pupil image of the wearer under the preset brightness, adjusts the brightness of the light used for simulating the pupil of the wearer under the comfortable scene, determines the corresponding pupil size in the pupil image, and adjusts the corresponding brightness based on the reference pupil size in the later brightness adjustment so as to keep the pupil of the user under the size for a long time and avoid eye fatigue of the user.
Optionally, before the step of determining the pupil size, it may be sent to the user whether the eye tracking brightness adjustment mode needs to be started, and if the eye tracking mode is not started by the user, a backlight mode with fixed brightness is used, and the backlight of the screen is not adjusted. If the user selects yes, the system starts an eyeball tracking mode, performs a pupil image acquisition step and determines the pupil size of the wearer according to the acquired pupil image.
Step S20, determining the gaze point position of the wearer;
In this embodiment, after the step of determining the pupil size of the wearer, the gaze point location of the wearer at that time is determined. Backlight brightness of a certain area in VR equipment is accurately adjusted according to the position of the fixation point, so that power consumption of a screen can be reduced while eye fatigue of a user is avoided.
Alternatively, the gaze point position of the wearer may be determined by an eye tracking technique, which is a technique that tracks the viewing position of the wearer in accordance with characteristic changes in the eyes and the periphery of the eyes. The eye tracking technology is realized based on an optical recording method: eye images of the wearer's eye movements are acquired by a camera or video camera, and then eye features are extracted from the acquired eye images for use in modeling an estimated gaze/gaze point. The ocular features may include: pupil position, pupil shape, iris position, iris shape, eyelid position, corner of the eye position, spot (also known as purkinje spot) position, and the like. The most mainstream eyeball tracking method is called pupil-cornea reflection method, a light source is irradiated to an eye, a reflection point formed on a cornea by the light source is called a flare (also called purkinje's flare), and the eye is photographed by an image acquisition device, thereby obtaining an eye image with the flare. When the eyeball rotates, the relative position relation between the pupil center and the facula correspondingly changes, a plurality of eye images with the facula, which are acquired by the image acquisition equipment, reflect corresponding mapping models, and the sight line/gaze point estimation of the wearer can be carried out according to the mapping models.
Step S30, determining a backlight area needing to adjust the backlight brightness according to the fixation point position;
In this embodiment, the backlight brightness of a certain area in the VR device is accurately adjusted according to the gaze point position.
Optionally, in order to determine the backlight area, a corresponding mapping relationship is constructed between the gaze location of the wearer acquired by the device and the screen picture, and based on the mapping relationship, the gaze location of the wearer in the screen of the VR device is determined, where the gaze location may be a data parameter formed by pixels, the gaze location is taken as an area center, and the range size of the adjustment area is determined according to a preset range parameter, and illustratively, the gaze location is taken as a center, the range parameter is 0.05, and the adjustment area is taken as a center area with a radius of 0.05. The range size of the adjustment area is taken as the range in which the backlight brightness needs to be adjusted.
Step S40, adjusting the backlight brightness of the VR device according to the pupil size, and adjusting the backlight brightness in the backlight area.
In this embodiment, the backlight brightness parameter of the VR device is determined according to the pupil size, so that the backlight brightness is adjusted according to the parameter, and the range that needs to be adjusted according to the backlight brightness parameter is determined according to the adjustment area corresponding to the gaze position. The equipment judges whether the pupil size is equal to a threshold value, and if so, the backlight brightness is not adjusted; and if the pupil size is not equal to the threshold value, controlling the backlight chip to increase the backlight brightness of the VR equipment, and when the pupil size is smaller than the threshold value, controlling the backlight chip to reduce the backlight brightness until the pupil size is equal to the threshold value, and stopping adjustment.
Optionally, in order to reduce the power consumption of the VR device, before the adjustment, the device determines whether the adjustment area corresponding to the gaze location is within a preset area range, and if not, directly reduces the backlight brightness according to a certain linear relationship; if so, the backlight brightness of the VR device is adjusted according to the pupil size.
In the technical scheme provided by the embodiment, the eye tracking technology is utilized to simulate the gaze point of the user in the VR scene, and the backlight adjusting area is set according to the position of the gaze point, so that the backlight presents the characteristic that the brightness in a certain area range around the position of the gaze point of the user is adjusted according to the pupil size of the user, and the backlight brightness in the area beyond the range of the gaze point of the user presents gradually decreasing. After determining the area range of backlight brightness adjustment, if the pupil of the user is enlarged along with the VR scene, the backlight chip is controlled to increase the backlight brightness, and if the pupil of the user is reduced, the backlight chip is controlled to reduce the backlight brightness, so that the adjustment of the backlight brightness is realized. The method has the advantages that the excessive eye fatigue of the user is avoided, the power consumption of the screen can be effectively reduced, the standby time of VR products is prolonged, the contrast of screen pictures can be effectively improved, and the experience of the user is enhanced.
Referring to fig. 3, in the second embodiment, after the step S10, based on the first embodiment, the method further includes:
step S50, obtaining a reference pupil size;
step S60, determining the reference backlight brightness corresponding to the reference pupil size;
step S70, based on the reference backlight brightness, adjusting the backlight brightness according to the relative magnitude relation between the reference pupil size and the pupil size;
Optionally, the present embodiment provides a method for adjusting backlight brightness. When the user just wears the VR device but does not yet turn on the VR screen, the VR device determines a reference pupil size of the user, where the reference pupil size is used by the device to determine whether the user's eyes are in a relatively comfortable light environment. At this time, the polishing device in the VR device emits light with preset brightness, acquires the pupil image of the wearer under the preset brightness, adjusts the brightness of the light used for simulating the pupil of the wearer under the comfortable scene, determines the corresponding pupil size in the pupil image under the state, and adjusts the corresponding brightness based on the reference pupil size in the later brightness adjustment so as to keep the pupil of the user under the size for a long time and avoid the eye fatigue of the user.
Referring to fig. 4, fig. 4 is a schematic diagram of a refinement flow of step S70, where step S70 includes:
step S71, obtaining the current backlight brightness corresponding to the pupil size;
step S72, determining a brightness adjustment interval from the current backlight brightness to the reference backlight brightness according to the relative size relation between the reference pupil size and the pupil size;
Step S73, the backlight brightness is adjusted according to the brightness adjustment section.
Alternatively, the backlight brightness may be adjusted by adjusting the pupil size of the wearer. And determining a relative size difference between the pupil size at the current moment and the reference pupil size, and determining a brightness adjusting interval of the backlight brightness according to the relative size difference, wherein the adjusting interval can be a positive interval or a negative interval, and is a positive interval when the pupil size is larger than the reference pupil size and is a negative interval when the pupil size is smaller than the reference pupil size. And through a brightness adjusting module, the brightness corresponding to the pupil size at the current moment is gathered towards the brightness corresponding to the reference pupil size according to the adjusting parameters in the brightness adjusting interval, and when the pupil size of the wearer is detected to be equal to the reference pupil size, the device judges that the current backlight brightness is more comfortable display brightness of the wearer. It is emphasized that in this manner the decision threshold for the device to perform the brightness adjustment operation is the pupil size rather than the pupil size-associated backlight brightness.
Illustratively, the apparatus determines that the reference pupil size of the wearer is 3mm, the corresponding reference backlight brightness is 3500nits; when the pupil size of the wearer is detected to be 5mm at a certain moment and judged to be larger than the reference pupil size, which means that the brightness of a backlight screen of the VR equipment is lower, the backlight brightness at the moment is obtained and is 2000nits, a brightness adjustment interval is determined to be 1500nits, the backlight brightness of an adjustment area corresponding to the gaze position of the wearer is gradually changed from 2000nits to 3500nits according to the brightness adjustment interval, and when the pupil size of the wearer is detected to be close to the reference pupil size of 3mm, the backlight brightness is judged to be more comfortable brightness of the wearer.
Of course, alternatively, in another specific embodiment, the judging threshold value of the device for performing the brightness adjusting operation may also be the brightness of the backlight, that is, a reference backlight brightness is preset, and when the brightness of the screen backlight is higher or lower than the reference backlight brightness, the brightness adjusting operation is performed.
In the technical scheme provided by the embodiment, the pupil size of the wearer is taken as the threshold value, and the operation of adjusting the backlight brightness is performed according to the variation of the pupil size, so that the pupil of the user is kept at the size for a long time, the eye fatigue of the user is avoided, the contrast of a screen picture can be effectively improved, and the experience of the user is enhanced.
In addition, the present invention also provides a virtual reality device, including: the device comprises a memory, a processor and a screen backlight adjusting program which is stored in the memory and can run on the processor, wherein the screen backlight adjusting program realizes the steps of the screen backlight adjusting method according to any one of the above when being executed by the processor.
Furthermore, the present invention provides a computer-readable storage medium storing a screen backlight adjustment program which, when executed by a processor, implements the steps of the screen backlight adjustment method described in the above embodiments.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a computer readable storage medium (e.g. ROM/RAM, magnetic disk, optical disk) as described above, comprising instructions for causing a terminal device (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method according to the embodiments of the present invention.
The foregoing description is only of the preferred embodiments of the present invention, and is not intended to limit the scope of the invention, but rather is intended to cover any equivalents of the structures or equivalent processes disclosed herein or in the alternative, which may be employed directly or indirectly in other related arts.
Claims (8)
1. A method for adjusting a screen backlight, applied to a VR device, the method comprising the steps of:
determining pupil size according to the acquired pupil image;
Determining a gaze point location of the wearer based on an eye tracking technique;
Determining whether the fixation point position is within a preset backlight adjustment area range;
When the fixation point position is in the range of the preset backlight adjusting area, determining a backlight area needing to adjust backlight brightness according to the fixation point position;
Adjusting the backlight brightness in the backlight area in the VR device according to the pupil size, wherein when the pupil size is larger than a threshold value, the backlight brightness of the backlight area in the VR device is increased, and when the pupil size is smaller than the threshold value, the backlight brightness of the backlight area in the VR device is reduced, and the backlight brightness exceeding the backlight area is gradually reduced;
And when the fixation point position is not in the range of the preset backlight adjustment area, reducing the backlight brightness of the VR device based on a preset linear relation.
2. The method of adjusting a screen backlight of claim 1, wherein the step of determining a pupil size from the acquired pupil image comprises:
extracting pupil parameter information in the pupil image;
Establishing a mapping model corresponding to the pupil according to the pupil parameter information;
and determining the pupil size of the wearer at the current moment according to the mapping model.
3. The method of adjusting a screen backlight of claim 1, wherein the step of determining a backlight area in which the backlight brightness needs to be adjusted according to the gaze point position comprises:
Establishing a mapping relation between the gaze point position and a screen of the VR device;
determining a gaze location associated with the gaze point location in the VR screen based on the mapping relationship;
and determining an adjusting area taking the gazing position as a center based on a preset range parameter, and taking the adjusting area as the backlight area needing to adjust the backlight brightness.
4. The method for adjusting a backlight of a screen according to claim 1, further comprising, after the step of determining a pupil size from the acquired pupil image:
Obtaining a reference pupil size;
Determining the reference backlight brightness corresponding to the reference pupil size;
And adjusting the backlight brightness in the backlight area according to the relative size relation between the reference pupil size and the pupil size based on the reference backlight brightness.
5. The method of adjusting a screen backlight of claim 4, wherein the step of adjusting the backlight brightness in the backlight region according to a relative size relationship between the reference pupil size and the pupil size based on the reference backlight brightness comprises:
Acquiring the current backlight brightness corresponding to the pupil size;
Determining a brightness adjustment interval from the current backlight brightness to the reference backlight brightness according to the relative size relation between the reference pupil size and the pupil size, wherein the brightness adjustment interval is a positive interval when the pupil size is larger than the reference pupil size, is a negative interval when the pupil size is smaller than the reference pupil size, and is a null interval when the pupil size is equal to the reference pupil size;
and adjusting the backlight brightness in the backlight area according to the brightness adjustment interval, wherein when the pupil size is equal to the reference pupil size, the adjustment action is stopped.
6. The method for adjusting a screen backlight of claim 4, wherein prior to the step of obtaining the reference pupil size, further comprising:
Collecting the pupil image of the wearer under preset brightness, wherein the preset brightness is the light brightness of the pupil of the wearer under a relatively natural state;
and taking the pupil size corresponding to the pupil image as the reference pupil size.
7. A virtual reality device, the virtual reality device comprising: memory, a processor and a screen backlight adjustment program stored on the memory and executable on the processor, which when executed by the processor, implements the steps of the screen backlight adjustment method according to any one of claims 1-6.
8. A computer-readable storage medium, on which a screen backlight adjustment program is stored, which, when being executed by a processor, implements the steps of the screen backlight adjustment method according to any one of claims 1-6.
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