CN110996468B - Dimming method and device, dimming system and storage medium - Google Patents
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Abstract
The application discloses a method, a device, a dimming system and a storage medium for dimming, wherein the method comprises the following steps: acquiring the brightness of the current ambient light as the acquisition brightness, and analyzing the reading image signal to acquire a reading paper image if the absolute value of the difference between the current ambient light and the standard brightness is smaller than a preset brightness difference value L and the reading image signal is a high-frequency fluctuation signal, wherein L is larger than 0; if the color of the reading paper in the reading paper image is white or yellow, obtaining the reflected light color RGB of the reading paper as the collected RGB; if the comparison result between the standard RGB and the reflected light color of the standard paper at the standard brightness standard color temperature does not meet the preset RGB tolerance condition, acquiring adjusted RGB based on the acquired RGB and the standard RGB; and sending a color temperature adjusting signal to the dimming module based on the adjusted RGB. When the color of the reading paper turns yellow or white under the brightness of the current ambient light, the stimulation of the color temperature of the reflected light of the reading paper to the eyes of a user is considered, and the eye health is concerned.
Description
Technical Field
The present application relates to the field of data analysis and processing technologies, and in particular, to a method and an apparatus for dimming, a dimming system, and a storage medium.
Background
With the development and progress of society, people pay more and more attention to eye health. When browsing the book under the brightness of the ambient light, the user usually thinks that the brighter the brightness of the ambient light is, the better; however, when the color of the reading paper turns yellow or white under the brightness of the ambient light, the color temperature of the reflected light of the reading paper is affected by the color of the reading paper, and the color temperature of the reflected light of the reading paper is different, which causes different irritation to the eyes of the user. Research shows that when the color temperature of reflected light of the book reading paper is about 4000K, the stimulation to eyes of a user is small, and the book reading paper is most suitable for browsing the book.
The inventor finds that the dimming method in reading books under the brightness of ambient light at the present stage is only brightness adjustment, and often neglects the stimulation of the color temperature of the reflected light of the reading book on the eyes of a user when the color of the reading book is yellow or white under the brightness of the ambient light, namely, the dimming method is not intelligent and comprehensive enough, and neglects the eye health of the user.
Disclosure of Invention
In view of this, embodiments of the present application provide a method, an apparatus, a system and a storage medium for dimming, which consider the stimulation of the color temperature of the reflected light of the reading paper to the eyes of the user when the color of the reading paper turns yellow or white under the brightness of the current ambient light, pay attention to the eye health of the user, and the dimming method is more comprehensive and intelligent.
In a first aspect, an embodiment of the present application provides a method for dimming, where the method includes:
obtaining the brightness of the current ambient light as the collected brightness, and judging whether the absolute value of the difference value between the collected brightness and the standard brightness is smaller than a preset brightness difference value L; wherein L is greater than 0;
if the absolute value of the difference value between the acquired brightness and the standard brightness is smaller than a preset brightness difference value L, judging whether the reading image signal is a high-frequency fluctuation signal; if the reading image signal is a high-frequency fluctuation signal, analyzing the reading image signal to obtain a reading paper image;
if the color of the reading paper in the reading paper image is white or yellow, obtaining the reflected light color RGB of the reading paper as the collected RGB;
if the comparison result of the acquired RGB and the standard RGB does not meet the preset RGB tolerance condition, obtaining adjusted RGB based on the acquired RGB and the standard RGB; the standard RGB represents the reflected light color of the standard paper at the standard brightness and the standard color temperature;
and sending a color temperature adjusting signal to a dimming module based on the adjusting RGB.
Optionally, the comparison result between the acquired RGB and the standard RGB does not meet the preset RGB tolerance condition, and the comparison result includes one or more of the following:
the difference value between the R value in the collected RGB and the R value in the standard RGB does not meet the preset R difference value range;
the difference value between the G value in the collected RGB and the G value in the standard RGB does not meet the preset G difference value range;
and the difference value between the B value in the collected RGB and the B value in the standard RGB does not meet the preset B difference value range.
Optionally, the obtaining adjusted RGB based on the collected RGB and the standard RGB includes:
calculating the sum of the R value, the G value and the B value in the collected RGB to obtain a collected RGB sum; calculating the sum of the R value, the G value and the B value in the standard RGB to obtain a standard RGB sum;
calculating the ratio of the collected RGB sum to the standard RGB sum to obtain an RGB ratio;
and calculating the proportional product of the R value, the G value and the B value in the standard RGB and the RGB respectively to obtain the adjusted RGB.
Optionally, after the sending the color temperature adjustment signal to the dimming module based on the adjusted RGB, the method further includes:
the brightness of the current ambient light is obtained again to serve as the collected brightness, and whether the absolute value of the difference value between the collected brightness and the standard brightness is larger than a preset brightness difference value L or not is judged;
if the absolute value of the difference between the acquired brightness and the standard brightness is greater than a preset brightness difference L, sending a brightness adjusting signal to the dimming module based on the standard brightness so that the absolute value of the difference between the acquired brightness and the standard brightness is less than the preset brightness difference L;
and returning to the step of judging whether the reading image signal is a high-frequency fluctuation signal or not until the absolute value of the difference between the collected brightness and the standard brightness is smaller than a preset brightness difference L after the color temperature adjusting signal is sent to the dimming module based on the adjusted RGB.
Optionally, the method further includes:
and if the color of the reading paper in the reading paper image is not white and not yellow, or the reading paper image is not available, or the comparison result of the collected RGB and the standard RGB meets the preset RGB tolerance condition, sending a light appropriate signal to a display module.
Optionally, the method further includes:
and if the reading image signal is a low-frequency fluctuation signal, sending an optical abnormal signal to a display module.
Optionally, the method further includes:
if the reading book replacement operation is identified, analyzing the reading book replacement image signal to obtain a reading book replacement paper image;
and if the comparison result of the color of the changed reading paper in the image of the changed reading paper and the color of the reading paper does not meet the preset color tolerance condition, taking the image of the changed reading paper as the image of the reading paper, and returning to execute the step of obtaining the reflected light color RGB of the reading paper as the collected RGB if the color of the reading paper in the image of the reading paper is white or yellow.
In a second aspect, an embodiment of the present application provides a device for dimming, including:
the acquisition brightness obtaining and judging unit is used for obtaining the brightness of the current ambient light as acquisition brightness and judging whether the absolute value of the difference value between the acquisition brightness and the standard brightness is smaller than a preset brightness difference value L; wherein L is greater than 0;
the reading paper image obtaining unit is used for judging whether the reading image signal is a high-frequency fluctuation signal or not if the absolute value of the difference value between the acquired brightness and the standard brightness is smaller than a preset brightness difference value L; if the reading image signal is a high-frequency fluctuation signal, analyzing the reading image signal to obtain a reading paper image;
the collected RGB obtaining unit is used for obtaining the reflected light color RGB of the reading paper as collected RGB if the color of the reading paper in the reading paper image is white or yellow;
an adjusted RGB obtaining unit, configured to obtain adjusted RGB based on the acquired RGB and the standard RGB if a comparison result between the acquired RGB and the standard RGB does not meet a preset RGB tolerance condition; the standard RGB represents the reflected light color of the standard paper at the standard brightness and the standard color temperature;
and the color temperature adjusting signal sending unit is used for sending a color temperature adjusting signal to the dimming module based on the adjusting RGB.
In a third aspect, an embodiment of the present application provides a dimming system, where the dimming system includes a light source module, a brightness acquisition module, a photosensitive camera module, a processor, and a dimming module;
the light source module is used for providing a system light source;
the brightness acquisition module is used for acquiring the brightness of the current ambient light as the acquired brightness and sending the acquired brightness to the processor;
the photosensitive camera module is used for shooting a book to obtain a book reading image signal and sending the book reading image signal to the processor;
the processor is configured to perform the method for dimming according to any one of the above first aspects;
and the dimming module is used for controlling the light source module to dim light according to the color temperature adjusting signal.
In a fourth aspect, the present application provides a computer-readable storage medium for storing program codes for executing the dimming method of any one of the first aspect.
Compared with the prior art, the method has the advantages that:
by adopting the technical scheme of the embodiment of the application, the brightness of the current ambient light is obtained as the collected brightness, if the absolute value of the difference value between the collected brightness and the standard brightness is less than the preset brightness difference value L and the reading image signal is a high-frequency fluctuation signal, the reading image signal is analyzed to obtain the reading paper image, and L is more than 0; if the color of the reading paper in the reading paper image is white or yellow, obtaining the reflected light color RGB of the reading paper as the collected RGB; if the comparison result of the collected RGB and the standard RGB does not meet the preset RGB tolerance condition, obtaining adjusted RGB based on the collected RGB and the standard RGB; the standard RGB represents the reflected light color of the standard paper at the standard brightness and the standard color temperature; and sending a color temperature adjusting signal to the dimming module based on the adjusting RGB. Therefore, on the basis that the brightness of the current ambient light is proper, the color of the reading paper is white or yellow, and when the comparison result of the reflected light color RGB and the standard RGB is judged not to meet the preset RGB tolerance condition, the RGB is acquired by collecting the RGB and the standard RGB to obtain the adjusted RGB and send a color temperature adjusting signal so as to adjust the color temperature. According to the dimming method, when the color of the reading paper turns yellow or white under the brightness of the current ambient light, the stimulation of the color temperature of the reflected light of the reading paper to the eyes of a user is considered, the eye health of the user is concerned, and the dimming method is more comprehensive and intelligent.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the description of the embodiments of the present application will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic diagram of a system framework related to an application scenario in an embodiment of the present application;
fig. 2 is a schematic flowchart of a dimming method according to an embodiment of the present disclosure;
fig. 3 is a schematic flowchart of a dimming apparatus according to an embodiment of the present disclosure;
fig. 4 is a schematic structural diagram of a dimming system according to an embodiment of the present application.
Detailed Description
In order to make the technical solutions of the present application better understood, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, 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 application.
When the reading book is browsed under the brightness of the current ambient light, and the color of the reading book paper turns yellow or white, the color temperature of the reflected light of the reading book paper is influenced by the color of the reading book paper, and the color temperature of the reflected light of the reading book paper is different, so that the stimulation to eyes of a user is different. Research shows that when the color temperature of reflected light of the book reading paper is about 4000K, the stimulation to eyes of a user is small, and the book reading paper is most suitable for browsing, namely, the brightness is not the brighter as the reading paper is browsed under the brightness of the current ambient light, the better the brightness is. However, the inventor of the present invention has found, through research, that the light-adjusting method in reading the book under the brightness of the current ambient light at the present stage is only brightness adjustment, and often neglects the stimulation of the color temperature of the reflected light of the reading paper to the eyes of the user when the color of the reading paper turns yellow or white under the brightness of the current ambient light, that is, the light-adjusting method is not intelligent enough and comprehensive enough, and neglects the eye health of the user.
In order to solve the problem, in the embodiment of the application, the brightness of the current ambient light is obtained as the collected brightness, if the absolute value of the difference between the collected brightness and the standard brightness is smaller than the preset brightness difference value L and the reading image signal is a high-frequency fluctuation signal, the reading image signal is analyzed to obtain a reading paper image, and L is larger than 0; if the color of the reading paper in the reading paper image is white or yellow, obtaining the reflected light color RGB of the reading paper as the collected RGB; if the comparison result of the collected RGB and the standard RGB does not meet the preset RGB tolerance condition, obtaining adjusted RGB based on the collected RGB and the standard RGB; the standard RGB represents the reflected light color of the standard paper at the standard brightness and the standard color temperature; and sending a color temperature adjusting signal to the dimming module based on the adjusting RGB. Therefore, on the basis that the brightness of the current ambient light is proper, the color of the reading paper is white or yellow, and when the comparison result of the reflected light color RGB and the standard RGB is judged not to meet the preset RGB tolerance condition, the RGB is acquired by collecting the RGB and the standard RGB to adjust the RGB and send a color temperature adjusting signal so as to adjust the color temperature. According to the dimming method, when the color of the reading paper turns yellow or white under the brightness of the current ambient light, the stimulation of the color temperature of the reflected light of the reading paper to the eyes of a user is considered, the eye health of the user is concerned, and the dimming method is more comprehensive and intelligent.
For example, one of the scenarios in the embodiment of the present application may be applied to the scenario shown in fig. 1, where the scenario includes the dimming system 101 and the book 102; dimming system 101 includes light source module, luminance collection module, sensitization camera module, treater, module and display module of adjusting luminance, and wherein, light source module provides the system light source, and luminance collection module gathers the luminance of current ambient light and obtains to gather luminance and send to the treater, and sensitization camera module shoots reading book 102 and obtains reading book image signal and send to the treater, the embodiment that the treater adopted this application embodiment sends the colour temperature adjustment signal to the module of adjusting luminance, and the module of adjusting luminance adjusts luminance according to colour temperature adjustment signal control light source module for adjust luminance more intelligently, comprehensively, concern user's eye health with.
It is to be understood that, in the above application scenarios, although the actions of the embodiments of the present application are described as being performed by the processor in the dimming system 101, the present application is not limited in terms of performing the subject as long as the actions disclosed in the embodiments of the present application are performed.
It is to be understood that the above scenario is only one example of a scenario provided in the embodiment of the present application, and the embodiment of the present application is not limited to this scenario.
Specific implementations of the method, the apparatus, the dimming system, and the storage medium for dimming in the embodiments of the present application are described in detail below with reference to the accompanying drawings.
Exemplary method
With the scenario shown in fig. 1, referring to fig. 2, a flowchart of a method for dimming in an embodiment of the present application is shown. In this embodiment, the method may include, for example, the steps of:
step 201: and obtaining the brightness of the current ambient light as the acquisition brightness, and judging whether the absolute value of the difference value between the acquisition brightness and the standard brightness is smaller than a preset brightness difference value L.
Step 202: if the absolute value of the difference value between the acquired brightness and the standard brightness is smaller than a preset brightness difference value L, judging whether the reading image signal is a high-frequency fluctuation signal; and if the reading image signal is a high-frequency fluctuation signal, analyzing the reading image signal to obtain a reading paper image, wherein L is more than 0.
It can be understood that, when browsing the book under the brightness of the current ambient light, it should be determined whether the brightness of the current ambient light is proper and whether the current ambient light is stroboscopic first, and only under the condition that the brightness of the current ambient light is proper and the current ambient light is not stroboscopic, it is further determined whether the color temperature is proper. In the embodiment of the application, judging whether the brightness of the current ambient light is proper can be realized by comparing the collected brightness obtained by collecting the brightness of the current ambient light by the brightness collection module with the standard brightness; judging whether the current ambient light strobes can be realized by judging whether a reading image signal obtained by shooting the reading by the photosensitive camera module is a high-frequency fluctuation signal or a low-frequency fluctuation signal; only when the absolute value of the difference between the collected brightness and the standard brightness is smaller than or equal to the preset brightness difference value L and the reading image signal is a high-frequency fluctuation signal, the fact that the brightness of the current ambient light is proper and the current ambient light does not have stroboflash is indicated, and subsequently, in order to clearly judge whether the color temperature is proper or not, the reading image signal needs to be analyzed to obtain a reading paper image.
The absolute value of the difference between the acquired brightness and the standard brightness is less than or equal to a preset brightness difference value L, the brightness of the current ambient light is directly indicated to be proper, brightness adjustment is not needed, and at this time, if a reading image signal obtained by direct shooting is a high-frequency fluctuation signal, for example, the reading image signal is a 30-50kHz fluctuation signal, it is indicated that the current ambient light does not have stroboflash.
The analyzing of the reading image signal to obtain the reading paper image actually means that the reading in the reading image signal is subjected to contour recognition, the contour of the reading is found to obtain a reading contour image, then the reading in the reading contour image is subjected to image recognition, non-paper parts such as characters and pictures in the reading are found to be excluded, and a reading paper image representing the paper part in the reading is obtained. Therefore, in an optional implementation manner of this embodiment of this application, the analyzing the reading image signal in step 202 to obtain the reading paper image may include the following steps:
step A: carrying out contour recognition on the reader image signal to obtain a reader contour image;
and B: and carrying out image recognition on the reading outline image to obtain a reading paper image.
It should be noted that, in addition to the above-mentioned case that the absolute value of the difference between the acquired luminance and the standard luminance is smaller than the preset luminance difference L and the reading image signal is a high-frequency fluctuation signal, there may be the following cases:
the difference value between the collected brightness and the standard brightness is smaller than the negative preset brightness difference value-L, which means that the brightness of the current ambient light is insufficient or no light, and the brightness needs to be increased by adjusting the brightness through the dimming module based on the standard brightness, so that the brightness of the current ambient light is proper. Specifically, the processor sends a brightness adjustment signal to the dimming module based on the standard brightness, so that the dimming module adjusts the brightness based on the standard brightness, and the absolute value of the difference between the acquired brightness obtained by acquiring the brightness of the current ambient light again by the brightness acquisition module and the standard brightness is smaller than the preset brightness difference L.
And the difference value between the collected brightness and the standard brightness is larger than the preset brightness difference value L, and the condition indicates that the brightness of the current ambient light is too high and is not suitable. If the collected brightness is obtained by collecting the brightness of the current unadjustable ambient light by the brightness collection module, the brightness of the current ambient light is abnormal and is not suitable for browsing and reading the book, a light abnormal signal can be sent to the display module so as to inform a user that the current ambient light is abnormal and is not suitable for browsing and reading the book, and the display module can prompt the light abnormality through a preset display mode; for example, the display module comprises a plurality of LED indicator lamps, and the LED indicator lamps corresponding to the abnormal lighting are lightened; for another example, the display module includes an LED display screen, and light abnormality information and the like are displayed on the LED display screen; if the collected brightness is obtained by the brightness collection module collecting the adjustable brightness of the current ambient light, brightness adjustment is needed to be carried out through the dimming module based on standard brightness to reduce the brightness of the current ambient light, so that the brightness of the current ambient light is appropriate, specifically, the processor sends a brightness adjustment signal to the dimming module based on the standard brightness, so that the dimming module carries out brightness adjustment based on the standard brightness, and an absolute value of a difference value between the collected brightness obtained by the brightness collection module collecting the brightness of the current ambient light again and the standard brightness is smaller than a preset brightness difference value L.
The image reading signal is a low-frequency fluctuation signal, for example, the image reading signal is a 100Hz fluctuation signal, which indicates that the current ambient light has stroboscopic abnormality and is not suitable for browsing the book reading, and the light abnormality signal can be sent to the display module to inform the user that the current ambient light is abnormal and is not suitable for browsing the book reading, and the display module can prompt the light abnormality through a preset display mode; for example, the display module comprises a plurality of LED indicator lamps, and the LED indicator lamps corresponding to the abnormal lighting are lightened; as another example, the display module includes an LED display screen, and light abnormality information and the like are displayed on the LED display screen. Therefore, in an optional implementation manner of the embodiment of the present application, the method may further include, for example, step C: and if the reading image signal is a low-frequency fluctuation signal, sending an optical abnormity signal to the display module.
Step 203: and if the color of the reading paper in the reading paper image is white or yellow, obtaining the reflected light color RGB of the reading paper as the collected RGB.
It should be noted that, after the reading paper image is obtained in step 202, the color of the reading paper in the reading paper image may be determined, and only when the color of the reading paper in the reading paper image is white or yellow, it indicates that the reflected light of the reading paper is not soft enough, and stimulates eyes of a user, in this case, whether the color temperature is appropriate may be determined.
Besides the above-mentioned situation that the color of the reading paper in the reading paper image is white or yellow, there is also a situation that the color of the reading paper in the reading paper image is neither white nor yellow, which means that the reflected light of the reading paper is soft and basically has no stimulation to eyes of a user; the reading paper obtained in step 202 has no image because the reading paper is a full picture, and the problem of reflected light color temperature of the reading paper does not exist. In summary, in both cases, it is not necessary to determine whether the color temperature is appropriate, that is, the current ambient light is suitable for browsing and reading the book, and a light appropriate signal may be sent to the display module to inform the user that the current ambient light is suitable for browsing and reading the book, and the display module may prompt that the light is appropriate through a preset display mode; for example, the display module comprises a plurality of LED indicator lamps, and the LED indicator lamps corresponding to light-combining adaptation are lightened; as another example, the display module includes an LED display screen on which light adaptation information and the like are displayed. Therefore, in an optional implementation manner of the embodiment of the present application, the method may further include, for example, step D: and if the color of the reading paper in the reading paper image is not white and not yellow, or the reading paper image is not available, sending a light appropriate signal to a display module.
Step 204: if the comparison result of the acquired RGB and the standard RGB does not meet the preset RGB tolerance condition, obtaining adjusted RGB based on the acquired RGB and the standard RGB; the standard RGB represents a reflected light color of the standard paper at a standard brightness standard color temperature.
It should be noted that, after the collected RGB is obtained in step 203, since the collected RGB represents the reflected light color of the reading paper under the current ambient light, it is necessary to compare the reflected light color with the standard RGB representing the reflected light color of the standard paper at the standard brightness and the standard color temperature, and determine whether the color temperature is appropriate. Specifically, tolerance conditions are set in advance for RGB as preset RGB tolerance conditions, and when the comparison result between the collected RGB and the standard RGB does not satisfy the preset RGB tolerance conditions, it indicates that the color temperature is not appropriate, and an adjustment RGB needs to be calculated based on the collected RGB and the standard RGB, so as to perform color temperature adjustment in the following.
The comparison result of the acquired RGB and the standard RGB that does not satisfy the preset RGB tolerance condition actually means that the R value, the G value, and the B value in the acquired RGB are respectively and correspondingly compared with the R value, the G value, and the B value in the standard RGB, and for the R value, the G value, and the B value, any one or more difference values that do not satisfy the corresponding preset difference value range indicate that the preset RGB tolerance condition is not satisfied. Therefore, in an optional implementation manner of the embodiment of the present application, the comparison result of the acquired RGB and the standard RGB not meeting the preset RGB tolerance condition includes one or more of the following:
the difference value between the R value in the collected RGB and the R value in the standard RGB does not meet the preset R difference value range;
the difference value between the G value in the collected RGB and the G value in the standard RGB does not meet the preset G difference value range;
and the difference value between the B value in the collected RGB and the B value in the standard RGB does not meet the preset B difference value range.
Wherein, the adjustment RGB obtained in step 204 based on the acquisition RGB and the standard RGB may utilize the following formula:
in the above formula, R1、G1And B1Respectively representing the R value, the G value and the B value in the collected RGB; r is0、G0And B0Respectively representing R value, G value and B value in standard RGB; r2、G2And B2Respectively indicating the R value, the G value and the B value in the adjusted RGB. It should be noted that the above formula adjusts the ratio of R, G and B values in RGB, assuming (R)1+G1+B1) Greater than (R)0+G0+B0) Then R is2Greater than R0、G2Greater than G0And B2Greater than B0. Therefore, the step 204 of obtaining the adjusted RGB based on the collected RGB and the standard RGB may include the following steps:
step E: calculating the sum of the R value, the G value and the B value in the collected RGB to obtain a collected RGB sum; calculating the sum of the R value, the G value and the B value in the standard RGB to obtain a standard RGB sum;
step F: calculating the ratio of the collected RGB sum to the standard RGB sum to obtain an RGB ratio;
step G: and calculating the proportional product of the R value, the G value and the B value in the standard RGB and the RGB respectively to obtain the adjusted RGB.
It should be noted that, in addition to the above-mentioned situation that the comparison result between the acquired RGB and the standard RGB does not satisfy the preset RGB tolerance condition, there may be a situation that the comparison result between the acquired RGB and the standard RGB satisfies the preset RGB tolerance condition, which indicates that the difference between the acquired RGB and the standard RGB is smaller within the acceptable range; namely, the color temperature is suitable for the current ambient light, and the color temperature is also suitable for browsing the book. Similarly, a light appropriate signal can be sent to the display module so as to inform a user that the current ambient light is suitable for browsing the book, and the display module can prompt that the light is appropriate through a preset display mode; for example, the display module comprises a plurality of LED indicator lamps, and the LED indicator lamps corresponding to light-combining adaptation are lightened; as another example, the display module includes an LED display screen on which light adaptation information and the like are displayed. Therefore, in an optional implementation manner of this embodiment of the present application, the method may further include, for example, step H: and if the comparison result of the collected RGB and the standard RGB meets the preset RGB tolerance condition, sending a light appropriate signal to a display module.
Step 204: and sending a color temperature adjusting signal to a dimming module based on the adjusting RGB.
It can be understood that, after the adjusted RGB is obtained in step 203, a color temperature adjustment signal needs to be sent to the dimming module based on the adjusted RGB, so that the dimming module controls the light source module to adjust the color temperature according to the color temperature adjustment signal to realize dimming.
It should be noted that, because the influence degrees of R, G and B in RGB on the brightness of the current ambient light are different, after the dimming module controls the light source module to perform color temperature adjustment according to the color temperature adjustment signal, the brightness of the current ambient light may slightly change, and at this time, the brightness of the current ambient light needs to be obtained again by the brightness acquisition module as the acquired brightness, and the acquired brightness is compared with the standard brightness. When the absolute value of the difference value between the acquired brightness and the standard brightness is smaller than a preset brightness difference value L, no other operation is required to be executed; when the absolute value of the difference between the acquired brightness and the standard brightness is greater than a preset brightness difference value L, namely, the difference between the acquired brightness and the standard brightness is less than a negative preset brightness difference value-L, or the difference between the acquired brightness and the standard brightness is greater than a preset brightness difference value L, brightness adjustment is required to be performed through a dimming module based on the standard brightness so that the absolute value of the difference between the acquired brightness and the standard brightness is less than the preset brightness difference value L, the step of judging whether the reading image signal is a high-frequency fluctuation signal is performed, if yes, color temperature adjustment is performed again, and the step of performing the above-mentioned series of steps is stopped when the absolute value of the difference between the acquired brightness and the standard brightness is less than the preset brightness difference value L until a color temperature adjustment signal is sent to the dimming module based on RGB adjustment. Therefore, in an optional implementation manner of this embodiment of the present application, after step 204, for example, the following steps may also be included:
step I: the brightness of the current ambient light is obtained again to serve as the collected brightness, and whether the absolute value of the difference value between the collected brightness and the standard brightness is larger than a preset brightness difference value L or not is judged;
step J: if the absolute value of the difference between the acquired brightness and the standard brightness is greater than a preset brightness difference L, sending a brightness adjusting signal to the dimming module based on the standard brightness so that the absolute value of the difference between the acquired brightness and the standard brightness is less than the preset brightness difference L;
step K: and returning to the step of judging whether the reading image signal is a high-frequency fluctuation signal or not until the absolute value of the difference value between the collected brightness and the standard brightness is smaller than a preset brightness difference value L after the color temperature adjusting signal is sent to the dimming module based on the adjusted RGB.
Wherein, if the adjusted RGB is obtained based on the collected RGB and the standard RGB again, the following formula may be used:
and so on, and will not be described herein. R3, G3, and B3 are values of reflected light RGB of the reading paper obtained when the color of the reading paper in the reading paper image is white or yellow after analyzing the reading image signal to obtain the reading paper image after the brightness adjustment, and are unrelated to the sizes of the previous R2, G2, and B2.
The embodiment of the invention can be combined with the brightness information to assist in adjusting the color temperature, so that the color temperature can be adjusted more reasonably and conveniently, and the actual requirements can be better met.
It should be noted that, there may be a situation that a user changes a book, and compared to the above dimming method, when the change operation of the book is identified by the photosensitive camera module, in order to determine whether the color temperature is appropriate, first, the image signal of the changed book needs to be analyzed to obtain an image of the paper of the changed book; then, the color of the reading paper to be replaced in the image of the reading paper to be replaced is compared with the color of the reading paper in the dimming method, a tolerance condition is set as a preset color tolerance condition in advance for the color, when the comparison result of the color of the reading paper to be replaced and the color of the reading paper does not meet the preset color tolerance condition, the current environment light after dimming is not suitable for browsing the replaced reading, the image of the reading paper to be replaced needs to replace the image of the reading paper, and if the color of the reading paper in the image of the reading paper is white or yellow, the reflected light color RGB of the reading paper is obtained to serve as the step of collecting RGB. Therefore, in an optional implementation manner of the embodiment of the present application, the method may further include the following steps:
step L: if the reading book replacement operation is identified, analyzing the reading book replacement image signal to obtain a reading book replacement paper image;
step M: and if the comparison result of the color of the changed reading paper in the image of the changed reading paper and the color of the reading paper does not meet the preset color tolerance condition, taking the image of the changed reading paper as the image of the reading paper, and returning to execute the step of obtaining the reflected light color RGB of the reading paper as the collected RGB if the color of the reading paper in the image of the reading paper is white or yellow.
Through various implementation manners provided by this embodiment, the brightness of the current ambient light is obtained as the collected brightness, and if the absolute value of the difference between the collected brightness and the standard brightness is smaller than the preset brightness difference L and the reading image signal is a high-frequency fluctuation signal, the reading image signal is analyzed to obtain a reading paper image, where L is greater than 0; if the color of the reading paper in the reading paper image is white or yellow, obtaining the reflected light color RGB of the reading paper as the collected RGB; if the comparison result of the collected RGB and the standard RGB does not meet the preset RGB tolerance condition, obtaining adjusted RGB based on the collected RGB and the standard RGB; the standard RGB represents the reflected light color of the standard paper at the standard brightness and the standard color temperature; and sending a color temperature adjusting signal to the dimming module based on the adjusting RGB. Therefore, on the basis that the brightness of the current ambient light is proper, the color of the reading paper is white or yellow, and when the comparison result of the reflected light color RGB and the standard RGB is judged not to meet the preset RGB tolerance condition, the RGB is acquired by collecting the RGB and the standard RGB to obtain the adjusted RGB and send a color temperature adjusting signal so as to adjust the color temperature. According to the dimming method, when the color of the reading paper turns yellow or white under the brightness of the current ambient light, the stimulation of the color temperature of the reflected light of the reading paper to the eyes of a user is considered, the eye health of the user is concerned, and the dimming method is more comprehensive and intelligent.
Exemplary devices
In correspondence with the above method embodiment, referring to fig. 3, a schematic structural diagram of a dimming device in the embodiment of the present application is shown. In this embodiment, the apparatus may specifically include:
an acquired brightness obtaining and judging unit 301, configured to obtain brightness of current ambient light as acquired brightness, and judge whether an absolute value of a difference between the acquired brightness and standard brightness is smaller than a preset brightness difference L;
a reading paper image obtaining unit 302, configured to determine whether the reading image signal is a high-frequency fluctuation signal if the absolute value of the difference between the acquired brightness and the standard brightness is smaller than a preset brightness difference L; if the reading image signal is a high-frequency fluctuation signal, analyzing the reading image signal to obtain a reading paper image, wherein L is more than 0;
a collected RGB obtaining unit 303, configured to obtain a reflected light color RGB of the reading paper as collected RGB if the color of the reading paper in the reading paper image is white or yellow;
an adjusted RGB obtaining unit 304, configured to obtain adjusted RGB based on the acquired RGB and the standard RGB if a comparison result between the acquired RGB and the standard RGB does not meet a preset RGB tolerance condition; the standard RGB represents the reflected light color of the standard paper at the standard brightness and the standard color temperature;
a color temperature adjustment signal sending unit 305, configured to send a color temperature adjustment signal to the dimming module based on the adjusted RGB.
In an optional implementation manner of the embodiment of the present application, the comparison result of the acquired RGB and the standard RGB not meeting the preset RGB tolerance condition includes one or more of the following:
the difference value between the R value in the collected RGB and the R value in the standard RGB does not meet the preset R difference value range;
the difference value between the G value in the collected RGB and the G value in the standard RGB does not meet the preset G difference value range;
and the difference value between the B value in the collected RGB and the B value in the standard RGB does not meet the preset B difference value range.
In an optional implementation manner of this embodiment of this application, the adjusting RGB obtaining unit 303 includes:
the acquisition RGB sum and standard RGB sum obtaining subunit is used for calculating the sum of the R value, the G value and the B value in the acquired RGB sum to obtain the acquired RGB sum; calculating the sum of the R value, the G value and the B value in the standard RGB to obtain a standard RGB sum;
the RGB proportion obtaining subunit is used for calculating the ratio of the collected RGB sum to the standard RGB sum to obtain an RGB proportion;
and the adjusting RGB obtaining subunit is used for calculating the proportional product of the R value, the G value and the B value in the standard RGB and the RGB respectively to obtain the adjusting RGB.
In an optional implementation manner of the embodiment of the present application, the apparatus further includes:
the acquisition brightness reacquisition judging unit is used for reacquiring the brightness of the current ambient light as acquisition brightness and judging whether the absolute value of the difference value between the acquisition brightness and the standard brightness is greater than a preset brightness difference value L or not;
the brightness adjusting signal sending unit is used for sending a brightness adjusting signal to the dimming module based on the standard brightness if the absolute value of the difference between the acquired brightness and the standard brightness is greater than a preset brightness difference value L, so that the absolute value of the difference between the acquired brightness and the standard brightness is smaller than the preset brightness difference value L;
and the first return execution unit is used for returning to execute the step of judging whether the reading image signal is a high-frequency fluctuation signal or not until the absolute value of the difference between the acquired brightness and the standard brightness is smaller than a preset brightness difference L after the color temperature adjustment signal is sent to the dimming module based on the adjustment RGB.
In an optional implementation manner of the embodiment of the present application, the apparatus further includes:
and the light appropriate signal sending unit is used for sending a light appropriate signal to the display module if the color of the reading paper in the reading paper image is not white and not yellow, or the reading paper image is not available, or the comparison result of the collected RGB and the standard RGB meets the preset RGB tolerance condition.
In an optional implementation manner of the embodiment of the present application, the apparatus further includes:
and the optical abnormal signal sending unit is used for sending an optical abnormal signal to the display module if the reading image signal is a low-frequency fluctuation signal.
In an optional implementation manner of the embodiment of the present application, the apparatus further includes:
a replacement reader paper image obtaining unit for analyzing the replacement reader image signal to obtain a replacement reader paper image if the reader replacement operation is recognized;
and a second return execution unit, configured to, if a comparison result between a color of the replacement reading paper in the image of the replacement reading paper and a color of the reading paper does not meet a preset color tolerance condition, use the image of the replacement reading paper as the image of the reading paper, and return to execute a step of obtaining a reflected light color RGB of the reading paper as a collected RGB if the color of the reading paper in the image of the reading paper is white or yellow.
Through various implementation manners provided by this embodiment, the brightness of the current ambient light is obtained as the collected brightness, and if the absolute value of the difference between the collected brightness and the standard brightness is smaller than the preset brightness difference L and the reading image signal is a high-frequency fluctuation signal, the reading image signal is analyzed to obtain a reading paper image, where L is greater than 0; if the color of the reading paper in the reading paper image is white or yellow, obtaining the reflected light color RGB of the reading paper as the collected RGB; if the comparison result of the collected RGB and the standard RGB does not meet the preset RGB tolerance condition, obtaining adjusted RGB based on the collected RGB and the standard RGB; the standard RGB represents the reflected light color of the standard paper at the standard brightness and the standard color temperature; and sending a color temperature adjusting signal to the dimming module based on the adjusting RGB. Therefore, on the basis that the brightness of the current ambient light is proper, the color of the reading paper is white or yellow, and when the comparison result of the reflected light color RGB and the standard RGB is judged not to meet the preset RGB tolerance condition, the RGB is acquired by collecting the RGB and the standard RGB to obtain the adjusted RGB and send a color temperature adjusting signal so as to adjust the color temperature. According to the dimming method, when the color of the reading paper turns yellow or white under the brightness of the current ambient light, the stimulation of the color temperature of the reflected light of the reading paper to the eyes of a user is considered, the eye health of the user is concerned, and the dimming method is more comprehensive and intelligent.
Exemplary System
Corresponding to the above method embodiment, referring to fig. 4, a schematic structural diagram of a dimming system in the embodiment of the present application is shown. In this embodiment, the dimming system 400 may specifically include:
the system comprises a light source module 401, a brightness acquisition module 402, a photosensitive camera module 403, a processor 404 and a dimming module 405;
the light source module 401 is used for providing a system light source;
the brightness acquisition module 402 is configured to obtain brightness of current ambient light as acquisition brightness, and send the acquisition brightness to the processor 404;
the photosensitive camera module 403 is configured to shoot a book to obtain a book reading image signal, and send the book reading image signal to the processor 404;
the processor 404 is configured to execute the dimming method according to the above method embodiment;
the dimming module 405 is configured to control the light source module 401 to dim according to the color temperature adjustment signal.
In an optional implementation manner of the embodiment of the present application, the dimming module 405 is further configured to control the light source module 401 to perform dimming according to the brightness adjusting signal, if the absolute value of the difference between the acquired brightness and the standard brightness is greater than a preset brightness difference L, and send a brightness adjusting signal to the dimming module based on the standard brightness.
Corresponding to the above method embodiment, step C: if the reading image signal is a low-frequency fluctuation signal, sending a light abnormal signal to the display module, in an optional implementation manner of the embodiment of the present application, the dimming system 400 further includes a display module;
and the display module is used for displaying according to the optical abnormal signal.
Corresponding to the above method embodiment, step D: if the color of the reading paper in the reading paper image is not white and not yellow, or the reading paper image is not available, sending a light appropriate signal to a display module; or step E: if the comparison result of the collected RGB and the standard RGB meets the preset RGB tolerance condition, sending a light appropriate signal to a display module; in an optional implementation manner of the embodiment of the present application, the display module is further configured to perform display according to the light adaptation signal.
Therefore, the dimming module in the dimming system controls the light source module to dim light according to the color temperature adjusting signal, and the stimulation of the color temperature of the reflected light of the reading paper to the eyes of the user when the color of the reading paper turns yellow or white under the current ambient light is considered, so that the eye health of the user is concerned, namely, the dimming method of the dimming system is more comprehensive and intelligent.
In addition, a computer-readable storage medium for storing program codes for executing the dimming method according to the above method embodiment is further provided.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. 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 an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.
The foregoing is merely a preferred embodiment of the present application and is not intended to limit the present application in any way. Although the present application has been described with reference to the preferred embodiments, it is not intended to limit the present application. Those skilled in the art can now make numerous possible variations and modifications to the disclosed embodiments, or modify equivalent embodiments, using the methods and techniques disclosed above, without departing from the scope of the claimed embodiments. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application still fall within the protection scope of the technical solution of the present application without departing from the content of the technical solution of the present application.
Claims (8)
1. A method of dimming, comprising:
obtaining the brightness of the current ambient light as the collected brightness, and judging whether the absolute value of the difference value between the collected brightness and the standard brightness is smaller than a preset brightness difference value L; wherein L is greater than 0;
if the absolute value of the difference value between the acquired brightness and the standard brightness is smaller than a preset brightness difference value L, judging whether the reading image signal is a high-frequency fluctuation signal; if the reading image signal is a high-frequency fluctuation signal, analyzing the reading image signal to obtain a reading paper image;
if the color of the reading paper in the reading paper image is white or yellow, obtaining the reflected light color RGB of the reading paper as the collected RGB;
if the comparison result of the acquired RGB and the standard RGB does not meet the preset RGB tolerance condition, obtaining adjusted RGB based on the acquired RGB and the standard RGB; the standard RGB represents the reflected light color of the standard paper at the standard brightness and the standard color temperature;
sending a color temperature adjusting signal to a dimming module based on the adjusting RGB;
wherein, the comparison result of the collected RGB and the standard RGB does not meet the preset RGB tolerance condition and comprises one or more of the following conditions:
the difference value between the R value in the collected RGB and the R value in the standard RGB does not meet the preset R difference value range;
the difference value between the G value in the collected RGB and the G value in the standard RGB does not meet the preset G difference value range;
the difference value between the B value in the collected RGB and the B value in the standard RGB does not meet the preset B difference value range;
the obtaining adjusted RGB based on the acquisition RGB and the standard RGB includes:
calculating the sum of the R value, the G value and the B value in the collected RGB to obtain a collected RGB sum; calculating the sum of the R value, the G value and the B value in the standard RGB to obtain a standard RGB sum;
calculating the ratio of the collected RGB sum to the standard RGB sum to obtain an RGB ratio;
and calculating the proportional product of the R value, the G value and the B value in the standard RGB and the RGB respectively to obtain the adjusted RGB.
2. The method of claim 1, further comprising, after said sending a color temperature adjustment signal to a dimming module based on said adjusted RGB:
the brightness of the current ambient light is obtained again to serve as the collected brightness, and whether the absolute value of the difference value between the collected brightness and the standard brightness is larger than a preset brightness difference value L or not is judged;
if the absolute value of the difference between the acquired brightness and the standard brightness is greater than a preset brightness difference L, sending a brightness adjusting signal to the dimming module based on the standard brightness so that the absolute value of the difference between the acquired brightness and the standard brightness is less than the preset brightness difference L;
and returning to the step of judging whether the reading image signal is a high-frequency fluctuation signal or not until the absolute value of the difference between the collected brightness and the standard brightness is smaller than a preset brightness difference L after the color temperature adjusting signal is sent to the dimming module based on the adjusted RGB.
3. The method of claim 1, further comprising:
and if the color of the reading paper in the reading paper image is not white and not yellow, or the reading paper image is not available, or the comparison result of the collected RGB and the standard RGB meets the preset RGB tolerance condition, sending a light appropriate signal to a display module.
4. The method of claim 1, further comprising:
and if the reading image signal is a low-frequency fluctuation signal, sending an optical abnormal signal to a display module.
5. The method of claim 1, further comprising:
if the reading book replacement operation is identified, analyzing the reading book replacement image signal to obtain a reading book replacement paper image;
and if the comparison result of the color of the changed reading paper in the image of the changed reading paper and the color of the reading paper does not meet the preset color tolerance condition, taking the image of the changed reading paper as the image of the reading paper, and returning to execute the step of obtaining the reflected light color RGB of the reading paper as the collected RGB if the color of the reading paper in the image of the reading paper is white or yellow.
6. A device for dimming, comprising:
the acquisition brightness obtaining and judging unit is used for obtaining the brightness of the current ambient light as acquisition brightness and judging whether the absolute value of the difference value between the acquisition brightness and the standard brightness is smaller than a preset brightness difference value L; wherein L is greater than 0;
the reading paper image obtaining unit is used for judging whether the reading image signal is a high-frequency fluctuation signal or not if the absolute value of the difference value between the acquired brightness and the standard brightness is smaller than a preset brightness difference value L; if the reading image signal is a high-frequency fluctuation signal, analyzing the reading image signal to obtain a reading paper image;
the collected RGB obtaining unit is used for obtaining the reflected light color RGB of the reading paper as collected RGB if the color of the reading paper in the reading paper image is white or yellow;
an adjusted RGB obtaining unit, configured to obtain adjusted RGB based on the acquired RGB and the standard RGB if a comparison result between the acquired RGB and the standard RGB does not meet a preset RGB tolerance condition; the standard RGB represents the reflected light color of the standard paper at the standard brightness and the standard color temperature;
the color temperature adjusting signal sending unit is used for sending a color temperature adjusting signal to the dimming module based on the adjusting RGB;
wherein, the comparison result of the collected RGB and the standard RGB does not meet the preset RGB tolerance condition and comprises one or more of the following conditions:
the difference value between the R value in the collected RGB and the R value in the standard RGB does not meet the preset R difference value range;
the difference value between the G value in the collected RGB and the G value in the standard RGB does not meet the preset G difference value range;
the difference value between the B value in the collected RGB and the B value in the standard RGB does not meet the preset B difference value range;
the obtaining adjusted RGB based on the acquisition RGB and the standard RGB includes:
calculating the sum of the R value, the G value and the B value in the collected RGB to obtain a collected RGB sum; calculating the sum of the R value, the G value and the B value in the standard RGB to obtain a standard RGB sum;
calculating the ratio of the collected RGB sum to the standard RGB sum to obtain an RGB ratio;
and calculating the proportional product of the R value, the G value and the B value in the standard RGB and the RGB respectively to obtain the adjusted RGB.
7. A dimming system is characterized by comprising a light source module, a brightness acquisition module, a photosensitive camera module, a processor and a dimming module;
the light source module is used for providing a system light source;
the brightness acquisition module is used for acquiring the brightness of the current ambient light as the acquired brightness and sending the acquired brightness to the processor;
the photosensitive camera module is used for shooting a book to obtain a book reading image signal and sending the book reading image signal to the processor;
the processor to perform the method of dimming of any of claims 1-5;
and the dimming module is used for controlling the light source module to dim light according to the color temperature adjusting signal.
8. A computer-readable storage medium for storing program code, the program code when executed on a computer being configured to perform the method of dimming of any of claims 1-5.
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