CN104167196A - Backlight brightness adjusting method and device and electronic device - Google Patents

Backlight brightness adjusting method and device and electronic device Download PDF

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Publication number
CN104167196A
CN104167196A CN201410419178.XA CN201410419178A CN104167196A CN 104167196 A CN104167196 A CN 104167196A CN 201410419178 A CN201410419178 A CN 201410419178A CN 104167196 A CN104167196 A CN 104167196A
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eyes
standard
current
eyes image
distance
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CN201410419178.XA
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CN104167196B (en
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白立朋
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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Abstract

The invention belongs to the field of electronic devices and provides a backlight brightness adjusting method and device and an electronic device. The method comprises the steps of acquiring the current eye image; comparing the current eye image with a standard eye image to obtain a comparison result, wherein the standard eye image is an eye image of a user obtained when backlight brightness meets the eye comfort requirement of the user; adjusting backlight brightness according to the comparison result. According to the method, the current eye image is compared with the pre-obtained standard eye image, and backlight brightness is adjusted according to the comparison result. Due to the fact that the standard eye image is an eye image of a user obtained when backlight brightness meets the eye comfort requirement of the user, backlight brightness obtained finally through adjustment is backlight brightness suitable for a specific user, and personalized backlight brightness adjustment can be conducted for different users.

Description

A kind of control method of backlight illumination, device and electronic equipment
Technical field
The invention belongs to electronic device field, relate in particular to a kind of control method, device and electronic equipment of backlight illumination.
Background technology
Along with scientific and technical development, electronic equipment is widely used in the mankind's life.People can use electronic equipment reading electronic book, browsing page, watch video or play games, but carry out these whens operation, all need eyes to stare at the display screen of electronic equipment.If user stares at display screen for a long time, and the backlight illumination of display screen is while being not suitable for user, and it is very uncomfortable that user's eyes can be felt.
Although existing electronic equipment has had the function of adjusting backlight luminance, but, existing electronic equipment is when carrying out backlight illumination adjusting, be actually developer, according to the sensation of oneself or according to the next data of investigation, ambient brightness be set, and then ambient brightness is corresponding with backlight illumination, according to the variation of ambient brightness, carry out adjusting backlight luminance.Can find out, the result of existing automatic adjusting backlight luminance is that the backlight illumination that is applicable to environment regulates, and under same environment, all use is used this electronic equipment per family under same backlight illumination.And each user of use electronic equipment, under identical environment, may be not identical to the requirement of backlight illumination, so, existing back light brightness regulating method can not be applicable to each concrete user completely, can not to the requirement of backlight illumination, carry out adaptive adjusting backlight luminance according to each user.
Summary of the invention
The embodiment of the present invention provides a kind of control method, device and electronic equipment of backlight illumination, the control method that is intended to solve the backlight illumination that prior art provides, can not carry out according to each user the problem of adaptive adjusting backlight luminance to the requirement of backlight illumination.
On the one hand, provide a kind of control method of backlight illumination, described method comprises:
Obtain current eyes image;
Current eyes image and standard eyes image are contrasted, obtain comparing result, described standard eyes image is backlight illumination when meeting eyes of user comfort level and requiring, the user's who obtains eyes image;
According to comparing result adjusting backlight luminance.
Further, described obtain current eyes image before, also comprise:
Obtain standard eyes image;
Obtain eye contour and the pupil profile of standard eyes image;
According to the distance between left and right of described eye contour and the distance between the upper and lower of described eye contour, obtain standard eyes gap ratio value;
According to the distance between left and right of described pupil profile and the distance between left and right of described eye contour, obtain standard interocular distance ratio.
Further, described current eyes image and standard eyes image are contrasted, obtain comparing result and comprise:
Obtain eye contour and the pupil profile of current eyes image;
According to the distance between the upper and lower of described eye contour and the distance between left and right of described eye contour, obtain current eyes spacing ratio;
According to the distance between left and right of described pupil profile and the distance between left and right of described eye contour, obtain current interocular distance ratio;
Described current eyes spacing ratio, current interocular distance ratio are contrasted with described standard eyes gap ratio value, standard interocular distance ratio respectively, obtain comparing result.
Further, describedly according to comparing result adjusting backlight luminance, comprise:
If comparing result shows current eyes image comparison with standard eyes image, pupil becomes greatly, eyes are opened wide, improves backlight brightness values;
If comparing result shows current eyes image comparison with standard eyes image, pupil diminishes, eyes are opened littlely, reduces backlight brightness values.
On the other hand, provide a kind of regulating device of backlight illumination, described device comprises:
The first image acquisition unit, for obtaining current eyes image;
Contrast unit, for current eyes image and standard eyes image are contrasted, obtains comparing result, and described standard eyes image is that backlight illumination meets eyes of user comfort level when requirement, the user's who obtains eyes image;
Brightness adjusting unit, for according to comparing result adjusting backlight luminance.
Further, described device also comprises:
The second image acquisition unit, for obtaining standard eyes image;
Profile acquiring unit, for obtaining eye contour and the pupil profile of standard eyes image;
Standard eyes gap ratio value acquiring unit, for obtaining standard eyes gap ratio value according to the distance between left and right of described eye contour and the distance between the upper and lower of described eye contour;
Standard interocular distance ratio acquiring unit, for obtaining standard interocular distance ratio according to the distance between left and right of described pupil profile and the distance between left and right of described eye contour.
Further, described contrast unit comprises:
Profile acquisition module, for obtaining eye contour and the pupil profile of current eyes image;
Current eyes spacing ratio acquisition module, for obtaining current eyes spacing ratio according to the distance between the upper and lower of described eye contour and the distance between left and right of described eye contour;
Current interocular distance ratio acquisition module, for obtaining current interocular distance ratio according to the distance between left and right of described pupil profile and the distance between left and right of described eye contour;
Contrast module, for described current eyes spacing ratio, current interocular distance ratio are contrasted with described standard eyes gap ratio value, standard interocular distance ratio respectively, obtains comparing result.
Further, described brightness adjusting unit comprises:
The first brightness regulation module, if show current eyes image comparison with standard eyes image for comparing result, pupil becomes greatly, eyes are opened wide, improves backlight brightness values;
The second brightness regulation module, if show current eyes image comparison with standard eyes image for comparing result, pupil diminishes, eyes are opened littlely, reduces backlight brightness values.
On the one hand, provide a kind of electronic equipment again, described electronic equipment comprises the regulating device of backlight illumination as above.
In the embodiment of the present invention, current eyes image and the standard eyes image obtaining are in advance compared, if current eyes image is compared with standard eyes image, according to comparison result, carry out adjusting backlight luminance.Because standard eyes image is that backlight illumination is when meeting eyes of user comfort level and requiring, the user's who obtains eyes image, so the final backlight illumination obtaining that regulates is the backlight illumination that is applicable to concrete user, can, for different users, carry out personalized backlight illumination adjusting.
Accompanying drawing explanation
Fig. 1 is the realization flow figure of the control method of the backlight illumination that provides of the embodiment of the present invention one;
Fig. 2 is the standard eyes gap ratio value of the standard of obtaining eyes image and the realization flow figure of standard interocular distance ratio that the embodiment of the present invention one provides;
Fig. 3 is the eye contour extracting and the pupil profile schematic diagram that the embodiment of the present invention one provides;
Fig. 4 be the eye contour that provides of the embodiment of the present invention one between left and right apart from L and eye contour between the upper and lower apart from H schematic diagram;
Fig. 5 is provide current eyes image and standard eyes image are contrasted of the embodiment of the present invention one, obtains the realization flow figure of comparing result;
Fig. 6 is the structured flowchart of the regulating device of the backlight illumination that provides of the embodiment of the present invention two.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
In embodiments of the present invention, first obtain current eyes image; Current eyes image and standard eyes image are contrasted again, obtain comparing result, described standard eyes image is backlight illumination when meeting eyes of user comfort level and requiring, the user's who obtains eyes image; Finally according to comparing result adjusting backlight luminance.
Below in conjunction with specific embodiment, realization of the present invention is described in detail:
Embodiment mono-
Fig. 1 shows the realization flow of the control method of the backlight illumination that the embodiment of the present invention one provides, and details are as follows:
In step S101, obtain current eyes image.
In embodiments of the present invention, user, by electronic equipment reading electronic book, browsing page, when watching video or playing games, needs eyes to stare at the display screen of electronic equipment.
When the backlight brightness values of display is large not, user feels the backlight bright not of display, and eyes can be opened wide, pupil becomes large, attempt to obtain more light; When the backlight brightness values of display is too large, user feels the backlight too bright of display, and little-trend elongated shape that eyes can be opened, pupil diminish.
Electronic equipment can Real-time Obtaining user eyes image.Concrete, can take by the camera of electronic equipment, obtain user's eyes image.
In step S102, current eyes image and standard eyes image are contrasted, obtain comparing result, described standard eyes image is backlight illumination when meeting eyes of user comfort level and requiring, the user's who obtains eyes image.
In embodiments of the present invention, before execution step S101, also need to carry out following steps, these steps only need to be carried out once, standard eyes gap ratio value and the standard interocular distance ratio that by following steps, can get standard eyes image, idiographic flow as shown in Figure 2, comprising:
Step 1, obtain standard eyes image.
Wherein, standard eyes image is backlight illumination when meeting eyes of user comfort level and requiring, user's backlight illumination during applicable user namely, the user's who takes by camera eyes image.
User when using electronic equipment, can be first the backlight illumination of oneself adjusting display screen, when backlight illumination reaches the most comfortable state of own eye, the photo that comprises own eye by camera self-timer, using this photo as standard eyes image.
Follow-up, carry out backlight illumination while regulating, take this standard eyes image is reference frame, if photograph user when using display screen, in the eyes image that shooting obtains, the big or small comparison with standard image of the shape of eyes, pupil changes to some extent, will regulate adaptively the backlight illumination of display screen.
Step 2, the eye contour that obtains standard eyes image and pupil profile.
Wherein, can by profile extraction algorithm, from standard eyes image, extract eye contour and pupil profile, the eye contour extracting and pupil profile are as shown in Figure 3.
Step 3, according to described eye contour between left and right apart from and described eye contour between the upper and lower apart from obtaining standard eyes gap ratio value.
Wherein, can on the eye contour shown in Fig. 3 and pupil profile, choose several sampled points, such as, in Fig. 3, in eye contour, set 4 sampled points, be respectively eyes sampled point 1, eyes sampled point 2, eyes sampled point 3 and eyes sampled point 4; In pupil profile, 4 sampled points of same setting, are respectively pupil sampled point 1, pupil sampled point 2, pupil sampled point 3 and pupil sampled point 4.
As shown in Figure 4, coordinate position by eyes sampled point 2 and eyes sampled point 4 can calculate eye contour between left and right apart from L, coordinate position by eyes sampled point 1 and eyes sampled point 3 can calculate eye contour between the upper and lower apart from H, calculate the ratio of H and L, can obtain standard eyes gap ratio value, when the shape of human eye changes, eyes spacing ratio can change, so the variation by eyes spacing ratio can judge eyes, opens wide or opens little.
Step 4, according to described pupil profile between left and right apart from and described eye contour between left and right apart from obtaining standard interocular distance ratio.
Coordinate position by pupil sampled point 2 and pupil sampled point 4 can calculate pupil profile between left and right apart from L, due to conventionally changing not quite apart from L between left and right of human eye eye contour, so by calculate pupil between left and right apart from L and eye contour between left and right apart from the ratio between L, can know that pupil is become greatly or diminish.
Concrete, current eyes image and standard eyes image are contrasted, obtain the flow process of comparing result as shown in Figure 5, comprise the following steps:
Step 11, the eye contour that obtains current eyes image and pupil profile.
Step 12, according to described eye contour between the upper and lower apart from and described eye contour between left and right apart from obtaining current eyes spacing ratio.
Step 13, according to described pupil profile between left and right apart from and described eye contour between left and right apart from obtaining current interocular distance ratio.
Step 14, described current eyes spacing ratio, current interocular distance ratio are contrasted with described standard eyes gap ratio value, standard interocular distance ratio respectively, obtain comparing result.
Wherein, the standard eyes gap ratio value that the current eyes spacing ratio that step 12 is obtained and step 3 obtain contrasts, the standard interocular distance ratio that the current interocular distance ratio that step 13 is obtained and step 4 obtain contrasts, if the current eyes spacing ratio that step 12 obtains is greater than the standard eyes gap ratio value that step 3 obtains, and the current interocular distance ratio that step 13 obtains is greater than the standard interocular distance ratio that step 4 obtains, user's pupil becomes large, eyes and opens wide; If the current eyes spacing ratio that step 12 obtains is less than the standard eyes gap ratio value that step 3 obtains, and the current interocular distance ratio that step 13 obtains is less than the standard interocular distance ratio that step 4 obtains, user's pupil diminish, eyes open little, the shape of eyes trend elongated shape.
In step S103, according to comparing result adjusting backlight luminance.
In embodiments of the present invention, if comparing result shows current eyes image comparison with standard eyes image, pupil becomes greatly, eyes are opened wide, the backlight brightness values that represents display screen is less than normal, slowly improve backlight brightness values, then return to execution step S101, obtain next width eyes image, according to the comparing result of next width eyes image and standard eyes image adjusting backlight luminance again, until reaching the user that makes of standard, backlight illumination feels comfortable brightness.
If comparing result shows current eyes image comparison with standard eyes image, pupil diminishes, eyes are opened little, the backlight brightness values that represents display screen is bigger than normal, slowly reduce backlight brightness values, then return to execution step S101, obtain next width eyes image, according to the comparing result of next width eyes image and standard eyes image adjusting backlight luminance again, until backlight illumination reaches the user that makes of standard, feel comfortable brightness.
The present embodiment, compares current eyes image and the standard eyes image obtaining in advance, if current eyes image is compared with standard eyes image, according to comparison result, carrys out adjusting backlight luminance.Because standard eyes image is that backlight illumination is when meeting eyes of user comfort level and requiring, the user's who obtains eyes image, so the final backlight illumination obtaining that regulates is the backlight illumination that is applicable to concrete user, can, for different users, carry out personalized backlight illumination adjusting.
One of ordinary skill in the art will appreciate that all or part of step realizing in the various embodiments described above method is to come the hardware that instruction is relevant to complete by program, corresponding program can be stored in a computer read/write memory medium, described storage medium, as ROM/RAM, disk or CD etc.
Embodiment bis-
Fig. 6 shows the concrete structure block diagram of the regulating device of the backlight illumination that the embodiment of the present invention two provides, and for convenience of explanation, only shows the part relevant to the embodiment of the present invention.This device 6 can be the unit that is built in software unit, hardware cell or software and hardware combining in electronic equipment, and this electronic equipment can be mobile terminal, and this device 6 comprises:
Wherein, the first image acquisition unit 61, for obtaining current eyes image;
Contrast unit 62, for current eyes image and standard eyes image are contrasted, obtains comparing result, and described standard eyes image is that backlight illumination meets eyes of user comfort level when requirement, the user's who obtains eyes image;
Brightness adjusting unit 63, for according to comparing result adjusting backlight luminance.
Further, described device 6 also comprises:
The second image acquisition unit, for obtaining standard eyes image;
Profile acquiring unit, for obtaining eye contour and the pupil profile of standard eyes image;
Standard eyes gap ratio value acquiring unit, for obtaining standard eyes gap ratio value according to the distance between left and right of described eye contour and the distance between the upper and lower of described eye contour;
Standard interocular distance ratio acquiring unit, for obtaining standard interocular distance ratio according to the distance between left and right of described pupil profile and the distance between left and right of described eye contour.
Concrete, described contrast unit 62 comprises:
Profile acquisition module, for obtaining eye contour and the pupil profile of current eyes image;
Current eyes spacing ratio acquisition module, for obtaining current eyes spacing ratio according to the distance between the upper and lower of described eye contour and the distance between left and right of described eye contour;
Current interocular distance ratio acquisition module, for obtaining current interocular distance ratio according to the distance between left and right of described pupil profile and the distance between left and right of described eye contour;
Contrast module, for described current eyes spacing ratio, current interocular distance ratio are contrasted with described standard eyes gap ratio value, standard interocular distance ratio respectively, obtains comparing result.
Concrete, described brightness adjusting unit 63 comprises:
The first brightness regulation module, if show current eyes image comparison with standard eyes image for comparing result, pupil becomes greatly, eyes are opened wide, improves backlight brightness values;
The second brightness regulation module, if show current eyes image comparison with standard eyes image for comparing result, pupil diminishes, eyes are opened littlely, reduces backlight brightness values.
The regulating device of the backlight illumination that the embodiment of the present invention provides can be applied in the embodiment of the method one of aforementioned correspondence, and details, referring to the description of above-described embodiment one, do not repeat them here.
It should be noted that in said apparatus embodiment, included unit is just divided according to function logic, but is not limited to above-mentioned division, as long as can realize corresponding function; In addition, the concrete title of each functional unit also, just for the ease of mutual differentiation, is not limited to protection scope of the present invention.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any modifications of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.

Claims (9)

1. a control method for backlight illumination, is characterized in that, described method comprises:
Obtain current eyes image;
Current eyes image and standard eyes image are contrasted, obtain comparing result, described standard eyes image is backlight illumination when meeting eyes of user comfort level and requiring, the user's who obtains eyes image;
According to comparing result adjusting backlight luminance.
2. the method for claim 1, is characterized in that, described obtain current eyes image before, also comprise:
Obtain standard eyes image;
Obtain eye contour and the pupil profile of standard eyes image;
According to the distance between left and right of described eye contour and the distance between the upper and lower of described eye contour, obtain standard eyes gap ratio value;
According to the distance between left and right of described pupil profile and the distance between left and right of described eye contour, obtain standard interocular distance ratio.
3. method as claimed in claim 2, is characterized in that, described current eyes image and standard eyes image is contrasted, and obtains comparing result and comprises:
Obtain eye contour and the pupil profile of current eyes image;
According to the distance between the upper and lower of described eye contour and the distance between left and right of described eye contour, obtain current eyes spacing ratio;
According to the distance between left and right of described pupil profile and the distance between left and right of described eye contour, obtain current interocular distance ratio;
Described current eyes spacing ratio, current interocular distance ratio are contrasted with described standard eyes gap ratio value, standard interocular distance ratio respectively, obtain comparing result.
4. the method as described in claim 1,2 or 3, is characterized in that, describedly according to comparing result adjusting backlight luminance, comprises:
If comparing result shows current eyes image comparison with standard eyes image, pupil becomes greatly, eyes are opened wide, improves backlight brightness values;
If comparing result shows current eyes image comparison with standard eyes image, pupil diminishes, eyes are opened littlely, reduces backlight brightness values.
5. a regulating device for backlight illumination, is characterized in that, described device comprises:
The first image acquisition unit, for obtaining current eyes image;
Contrast unit, for current eyes image and standard eyes image are contrasted, obtains comparing result, and described standard eyes image is that backlight illumination meets eyes of user comfort level when requirement, the user's who obtains eyes image;
Brightness adjusting unit, for according to comparing result adjusting backlight luminance.
6. device as claimed in claim 5, is characterized in that, described device also comprises:
The second image acquisition unit, for obtaining standard eyes image;
Profile acquiring unit, for obtaining eye contour and the pupil profile of standard eyes image;
Standard eyes gap ratio value acquiring unit, for obtaining standard eyes gap ratio value according to the distance between left and right of described eye contour and the distance between the upper and lower of described eye contour;
Standard interocular distance ratio acquiring unit, for obtaining standard interocular distance ratio according to the distance between left and right of described pupil profile and the distance between left and right of described eye contour.
7. device as claimed in claim 6, is characterized in that, described contrast unit comprises:
Profile acquisition module, for obtaining eye contour and the pupil profile of current eyes image;
Current eyes spacing ratio acquisition module, for obtaining current eyes spacing ratio according to the distance between the upper and lower of described eye contour and the distance between left and right of described eye contour;
Current interocular distance ratio acquisition module, for obtaining current interocular distance ratio according to the distance between left and right of described pupil profile and the distance between left and right of described eye contour;
Contrast module, for described current eyes spacing ratio, current interocular distance ratio are contrasted with described standard eyes gap ratio value, standard interocular distance ratio respectively, obtains comparing result.
8. the device as described in claim 5,6 or 7, is characterized in that, described brightness adjusting unit comprises:
The first brightness regulation module, if show current eyes image comparison with standard eyes image for comparing result, pupil becomes greatly, eyes are opened wide, improves backlight brightness values;
The second brightness regulation module, if show current eyes image comparison with standard eyes image for comparing result, pupil diminishes, eyes are opened littlely, reduces backlight brightness values.
9. an electronic equipment, is characterized in that, described electronic equipment comprises the regulating device of the backlight illumination as described in claim 5 to 8 any one.
CN201410419178.XA 2014-08-22 2014-08-22 The control method of a kind of backlight illumination, device and electronic equipment Expired - Fee Related CN104167196B (en)

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CN106297675A (en) * 2015-05-18 2017-01-04 西安中兴新软件有限责任公司 A kind of method for controlling backlight thereof and device
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CN114816065A (en) * 2022-04-28 2022-07-29 歌尔股份有限公司 Screen backlight adjusting method, virtual reality device and readable storage medium
CN114816065B (en) * 2022-04-28 2024-07-30 歌尔股份有限公司 Screen backlight adjusting method, virtual reality device and readable storage medium

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