Eyesight protection method and device and electronic equipment

Abstract

The invention provides an eyesight protection method and device and electronic equipment, and relates to the technical field of video surveillance, and the method comprises the steps: recognizing the reading object type of a target person in a surveillance video image under the condition of determining that the target person in the surveillance video image enters a reading state, and determining a first maximum reading time length according to the reading object type; obtaining at least one piece of vision influence factor information of the target person, and adjusting the first maximum reading duration based on each piece of vision influence factor information and the corresponding influence degree to obtain a target maximum reading duration; and when it is determined that the continuous reading duration of the target person reaches the target maximum reading duration, outputting eye rest prompt information. According to the technical scheme provided by the invention, intelligent monitoring and information prompting of excessive eye use can be realized, the adaptability is high, the intelligent degree is high, and the eyesight protection effect is improved.

Description

Technical Field

[0001] The present invention relates to the field of video surveillance technology, and in particular to a vision protection method, device and electronic equipment. Background Art

[0002] Long-term close-range use of the eyes can easily cause visual fatigue or overuse of the eyes, which in turn induces myopia. Especially among adolescents, the incidence of myopia is showing an increasingly high trend. Adolescents are in the growth and development stage, and premature myopia can easily develop into high myopia or even irreversible vision loss. Therefore, it is particularly important to prevent myopia as early as possible.

[0003] In the related technology, some intelligent myopia prevention products can be used to monitor the user's eye usage, such as head-mounted myopia correction devices, etc. After detecting that the user's eye usage time for reading reaches the preset maximum eye usage time, the user can be automatically reminded to take a rest, so as to correct the user's eye usage status in time and avoid excessive eye usage, so as to achieve the purpose of protecting eyesight and preventing myopia. However, the maximum eye usage time of this method is fixed, and the eye usage habits and the degree of impact on vision in different reading environments are not the same. In this way, judging whether the eyes are excessively used and reminding the user in time based on the fixed maximum eye usage time cannot achieve a good vision protection effect, and the adaptability and intelligence level are not high. Summary of the invention

[0004] The present invention provides a vision protection method, device and electronic equipment to solve the problem that the adaptability and intelligence of myopia prevention products in the prior art are not high and cannot achieve a good vision protection effect, realize intelligent monitoring and information prompts of excessive eye use, and improve the vision protection effect.

[0005] The present invention provides a method for protecting eyesight, comprising:

[0006] In the case of determining that the target person in the surveillance video image enters a reading state, identifying the type of reading material of the target person, and determining a first maximum reading time according to the type of reading material;

[0007] Acquire at least one vision influencing factor information of the target person, and adjust the first maximum reading time based on each vision influencing factor information and the corresponding influence degree to obtain a target maximum reading time;

[0008] When it is determined that the continuous reading time of the target person reaches the target maximum reading time, eye rest prompt information is output.

[0009] According to a vision protection method provided by the present invention, the first maximum reading time is adjusted based on the information of each vision influencing factor and the corresponding influence degree to obtain a target maximum reading time, including:

[0010] For each piece of vision influencing factor information, based on the first maximum reading time and the influence degree corresponding to the vision influencing factor information, determine the reading time component corresponding to the vision influencing factor information;

[0011] Adjusting the reading time component based on the adjustment strategy of the vision influencing factor information to obtain a target reading time component;

[0012] The target reading time components corresponding to the vision influencing factor information are summed to obtain the target maximum reading time.

[0013] According to a vision protection method provided by the present invention, the vision influencing factor information includes ambient brightness; the adjustment strategy based on the vision influencing factor information adjusts the reading time component to obtain a target reading time component, including:

[0014] When the ambient brightness is within a preset brightness range, determining a brightness ratio of a brightness difference between the ambient brightness and a reference brightness relative to the reference brightness;

[0015] Determine a first duration adjustment amount corresponding to the ambient brightness based on the brightness proportion, the reading duration component and a first adjustment coefficient;

[0016] The first duration adjustment amount is subtracted from the reading duration component to obtain the target reading duration component.

[0017] According to a vision protection method provided by the present invention, the determining of the first duration adjustment amount corresponding to the ambient brightness based on the brightness proportion, the reading duration component and the first adjustment coefficient includes:

[0018] Acquire a first brightness corresponding to a reading area and a second brightness corresponding to a background area in the surveillance video image;

[0019] determining a contrast coefficient between the reading area and the background area based on a brightness difference between the first brightness and the second brightness;

[0020] The first duration adjustment amount is determined based on the reading duration component, the brightness ratio, the first adjustment coefficient and the contrast coefficient.

[0021] According to a vision protection method provided by the present invention, the vision influencing factor information includes the reading posture information of the target person; the adjustment strategy based on the vision influencing factor information adjusts the reading time component to obtain the target reading time component, including:

[0022] Determining the posture type and head deflection angle of the target person based on the reading posture information;

[0023] When the head deflection angle is less than a preset angle threshold, obtaining a vision impact coefficient corresponding to the posture type;

[0024] Determine a second adjustment coefficient based on the head deflection angle, the preset angle threshold and the vision impact coefficient, and determine a second duration adjustment amount corresponding to the reading posture information based on the reading duration component and the second adjustment coefficient;

[0025] The second duration adjustment amount is subtracted from the reading duration component to obtain the target reading duration component.

[0026] According to a vision protection method provided by the present invention, the vision influencing factor information includes the eye distance of the target person from the reading material; the adjustment strategy based on the vision influencing factor information adjusts the reading time component to obtain the target reading time component, including:

[0027] When the eye distance is greater than a first distance threshold and less than a second distance threshold, determining a target duration based on a preset distance influencing factor, the eye distance and the reading duration component;

[0028] The target reading time component is updated using the target reading time component to obtain the target reading time component.

[0029] According to a method for protecting eyesight provided by the present invention, the method further comprises:

[0030] When it is determined that the type of the reading material has changed, obtaining the second maximum reading time after the type of the reading material has changed, and determining the remaining reading time and the reading time interval when the type of the reading material has changed;

[0031] Determine a target remaining reading time based on a ratio of the first maximum reading time to the second maximum reading time, the remaining reading time, and a ratio coefficient corresponding to the reading time interval;

[0032] The first maximum reading time is adjusted based on the target remaining reading time.

[0033] According to a method for protecting eyesight provided by the present invention, after outputting the eye rest prompt information, the method further includes:

[0034] Obtaining the target person's eye rest time;

[0035] When the eye rest time is less than a preset rest time threshold and it is detected that the target person has re-entered the reading state, the eye rest prompt information continues to be output.

[0036] The present invention also provides a vision protection device, comprising:

[0037] A type identification module, used for identifying the type of reading material of the target person in the surveillance video image when it is determined that the target person in the surveillance video image enters a reading state;

[0038] A duration determination module, used to determine a first maximum reading duration according to the type of reading material;

[0039] A duration adjustment module, used for detecting at least one vision influencing factor information of the target person, and adjusting the first maximum reading duration based on each vision influencing factor information and the corresponding influence degree to obtain a target maximum reading duration;

[0040] The information prompt module is used to output eye rest prompt information when it is determined that the continuous reading time of the target person reaches the target maximum reading time.

[0041] The present invention also provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements any of the above-described vision protection methods when executing the computer program.

[0042] The present invention also provides a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the vision protection method as described in any one of the above is implemented.

[0043] The present invention also provides a computer program product, comprising a computer program, wherein when the computer program is executed by a processor, the vision protection method as described in any one of the above is implemented.

[0044] The vision protection method, device and electronic device provided by the present invention, when determining that the target person in the monitoring video image enters the reading state, identifies the type of reading material of the target person in the monitoring video image, and determines the first maximum reading time according to the type of reading material, and can set different first maximum reading times for different reading scenes; after determining the first maximum reading time in the current reading scene, obtain at least one vision influencing factor information of the target person, and adjust the first maximum reading time based on each vision influencing factor information and the corresponding influence degree to obtain the target maximum reading time, and then output the eye rest prompt information when it is determined that the continuous reading time of the target person reaches the target maximum reading time. In this way, the target person can be reminded to take a rest through the eye rest prompt information, and the intelligent monitoring and information prompt of excessive eye use are realized, so as to correct bad eye habits in time and protect eyesight. At the same time, it can dynamically plan the appropriate maximum reading time for the target person according to the real-time vision influencing factor information in different reading scenes, taking into account the influence of multiple vision influencing factors on vision, with strong adaptability and high intelligence, and improving the vision protection effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0046] Figure 1 This is one of the flow charts of the vision protection method provided by the embodiment of the present invention;

[0047] Figure 2 This is the second principle schematic diagram of the eyesight protection method provided by the embodiment of the present invention;

[0048] Figure 3 is a schematic structural diagram of a vision protection device provided by an embodiment of the present invention;

[0049] Figure 4 It is a schematic diagram of the structure of an electronic device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0050] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0051] It should be noted that the serial numbers assigned to the objects described in the present invention, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning.

[0052] When young people are learning or using electronic products, they often suffer from visual fatigue or excessive eye use, which can induce myopia due to problems such as incorrect sitting posture, inappropriate lighting in the reading environment, and too long time using the eyes. In order to facilitate real-time monitoring and remind bad eye habits, some products for preventing myopia have emerged. Among the related products for preventing myopia, such as head-mounted myopia correction devices, the distance between the eyes and the reading material can be detected. If the distance is too far or too close, an alarm will sound to remind the user to maintain a good eye distance, and after reaching a certain reading time, the user will automatically be reminded to take a rest to reduce the risk of myopia. However, this solution fixes the judgment of whether the use of eyes is appropriate at a certain reading distance or reading time, and there are fewer influencing factors to be considered comprehensively, and the function is relatively simple.

[0053] The formation of myopia is affected by vision-influencing factors such as continuous eye use time, ambient brightness, reading distance, and reading posture. Moreover, under the same eye use time, different types of reading materials (such as books, mobile phones, computers, televisions, etc.) have different degrees of impact on vision. For users, it is impossible to maintain a fixed reading posture and eye distance for a long time. Therefore, if a fixed maximum reading time is used to judge whether the eye use is appropriate and the user is reminded accordingly, it is obviously unable to adapt to the vision protection needs in various reading scenarios, and cannot achieve better vision protection effects.

[0054] Based on this, an embodiment of the present invention provides a method for protecting vision, which can adaptively set different first maximum reading times for different reading scenes by identifying the type of reading material of the target person in the monitoring video image and determining the first maximum reading time according to the type of reading material. By real-time monitoring and comprehensive judgment of other vision-influencing factors such as ambient brightness, reading posture, and eye distance from the reading material in the current reading scene, it is possible to comprehensively consider the impact of various vision-influencing factors on vision, adaptively adjust the first maximum reading time according to the impact of various vision-influencing factors, and dynamically plan an appropriate first maximum reading time for the target person, with a high degree of intelligence. When the continuous reading time of the target person reaches the first maximum reading time, eye rest prompt information can be output to prompt the target person to pay attention to rest, reduce the hidden dangers of myopia, and achieve the effect of protecting vision.

[0055] Combine the following Figure 1-Figure 2The eyesight protection method of the present invention is described. The eyesight protection method can be applied to electronic devices, which may include monitoring equipment or terminal equipment that is communicatively connected to the monitoring equipment, and the terminal equipment may include mobile phones, intelligent robots, wearable devices, smart home devices, etc. The monitoring equipment may include cameras, etc. The monitoring equipment may be deployed at any location in the monitoring site according to actual needs, such as next to a desk, on the roof of a child's room, etc. The eyesight protection method can also be applied to a eyesight protection method device set in an electronic device, and the eyesight protection method device can be implemented by software, hardware, or a combination of the two. The following is an explanation using the application to a monitoring device as an example.

[0056] Figure 1 One of the flow charts of the vision protection method provided by an embodiment of the present invention is exemplarily shown, referring to Figure 1 As shown, the vision protection method may include the following steps 110 to 130.

[0057] Step 110: When it is determined that the target person in the surveillance video image enters a reading state, the type of reading material of the target person is identified, and a first maximum reading time is determined according to the type of reading material.

[0058] At least one monitoring device can be deployed at any location in the room, such as next to a desk, on the roof, next to a bed, etc. The monitoring device can collect images within the monitoring range to obtain monitoring video images. The monitoring device can identify the target person and reading material in the monitoring video image through target detection, and extract the behavioral characteristics of the target person and the object characteristics of the reading material.

[0059] When it is determined based on the target person's behavioral characteristics and the object characteristics of the reading object that the target person's eyes are facing the reading object for a time longer than a preset time, or when it is determined based on the target person's behavioral characteristics and the object characteristics of the reading object that the target person is holding a reading object, it is determined that the target person has entered a reading state.

[0060] After the target person enters the reading state, the type of reading material can be determined based on the object characteristics of the reading material, and then the reading time corresponding to the type of reading material can be found in the time data table to obtain the first maximum reading time. The first maximum reading time is the most suitable continuous eye use time for the target person when reading the reading material. If the target person continues to read after exceeding the first maximum reading time, visual fatigue or excessive eye use will occur, which is easy to induce myopia. Among them, the time data table is used to save the corresponding relationship between the type of reading material and the reading time, and the corresponding relationship can be determined through experimental research; the type of reading material can include books, mobile phones, computers, tablets, televisions, etc., but is not limited to these.

[0061] Exemplarily, after the target person enters the reading state, he or she may change the reading material during the reading process, such as changing from reading a book to looking at a computer. In this scenario, the remaining reading time can be directly converted according to the ratio between the maximum reading times of different types of reading materials before and after the change. The first remaining reading time for reading a book can be converted into the second remaining reading time for looking at a computer, and then the first maximum reading time can be readjusted according to the second remaining reading time to adapt to the different effects of different reading materials on vision and achieve better vision protection effects.

[0062] In one embodiment, considering that as the target person's eye use time increases, the eye fatigue will continue to increase, that is, the eye fatigue degree changes with time, and as time increases, the curve increases steeply, the first maximum reading time determined based on the type of reading material can be weighted according to the degree of curve change, and the entire reading process can be divided into multiple stages with different weights, such as the initial stage, the middle stage and the late stage, and the proportion of each part can be different, such as the proportion of x: y: z. When the target person changes the reading material during the reading process, the monitoring device can determine the reading time interval and the remaining reading time of the target person when changing the reading material according to the reading time that the target user has currently read continuously, and then directly convert the remaining reading time according to the ratio between the first maximum reading time of different reading material types before and after the change. Considering that as the reading time increases, the visual fatigue degree increases, and the eye pressure increases, the reading conversion ratio after changing the reading material can be gradually shortened with time, such as the conversion ratio decreases every 10 minutes in the middle stage, and the ratio decreases every 5 minutes in the late stage. Based on this, a corresponding ratio coefficient can be set for each reading time interval to adapt to the characteristic that the degree of visual fatigue increases with the increase in eye use time.

[0063] Specifically, the vision protection method may also include: when it is determined that the type of reading material has changed, obtaining the second maximum reading time after the reading material type has changed, and determining the remaining reading time and the reading time interval when the reading material type has changed; determining the target remaining reading time based on the ratio of the first maximum reading time to the second maximum reading time, the remaining reading time and the ratio coefficient corresponding to the reading time interval; and adjusting the first maximum reading time based on the target remaining reading time.

[0064] Assuming that the first maximum reading time before the reading material type changes is T1, and the second maximum reading time after the reading material type changes is T2, the target remaining reading time Ts can be determined according to the following formula (1).

[0065]

[0066] Among them, t represents the time that the target person has read when the type of reading material changes, t≤T1; α represents the ratio coefficient corresponding to the reading time interval when the type of reading material changes. It can be understood that when T1>T2, α>1; when T1<T2, α<1.

[0067] Exemplarily, a reading material type change information table may be pre-established, in which the corresponding relationship between the reading material type change relationship, the reading time interval and the ratio coefficient may be stored. For example, the reading material type change information table shown in Table 1 below may be established:

[0068] Table 1

[0069]

[0070] Among them, M11, M12, M13, M21, M22 and M23 represent ratio coefficients, M11, M12 and M13 are all greater than 1, and M21, M22 and M23 are all less than 1. Considering that as the reading time becomes longer, the degree of visual fatigue increases and the pressure on the eyes increases, M11>M12>M13, M21>M22>M23 can be set to adapt to the characteristic that the degree of visual fatigue increases with the increase in the length of time of using the eyes.

[0071] It should be noted that Table 1 only illustrates the change relationship of reading material types between books and computers. Table 1 can also establish ratio coefficients of other reading material type change relationships in different reading time intervals based on the same principle.

[0072] Based on this, the electronic device can search for the corresponding ratio coefficient from the reading material type change information table shown in Table 1 according to the reading material type change relationship and the reading time interval when the reading material type changes.

[0073] For example, take the case where the target person changes from reading a book to looking at a computer during the reading process. Assuming that the maximum reading time corresponding to reading a book is T1, and the maximum reading time corresponding to looking at a computer is T2, at time t, the target person changes from reading a book to looking at a computer. At this time, the target person has read for t, and the remaining reading time when the reading type changes is T1-t. According to the division of the reading time interval, it can be determined that t is in the initial stage. The ratio coefficient α=M11 corresponding to the initial stage can be determined according to Table 1, and then the target remaining reading time Ts can be determined according to the above formula (1).

[0074] Step 120: Obtain at least one vision influencing factor information of the target person, and adjust the first maximum reading time based on each vision influencing factor information and the corresponding influence degree to obtain the target maximum reading time.

[0075] The vision influencing factor information may include at least one of the ambient brightness of the reading environment, the reading posture information, and the eye distance from the reading material. Each vision influencing factor information has a different degree of influence on vision. An influence degree may be configured for each vision influencing factor information, and the influence weight of each vision influencing factor information on the maximum reading time is characterized by the influence degree. Specifically, the influence degree of the ambient brightness is defined as the brightness influence degree, the influence degree of the reading posture information is defined as the reading posture influence degree, and the influence degree of the eye distance is defined as the reading distance influence degree.

[0076] After determining the first maximum reading time corresponding to the reading material type, the monitoring device can detect vision-influencing factors such as the ambient brightness of the target person's reading environment, the target person's reading posture information, and the target person's eye distance from the reading material based on the monitoring video image.

[0077] Specifically, the monitoring device can perform intelligent analysis on the brightness of the monitoring video image by average light metering, obtain the average brightness value of one or more frames of the monitoring video image, and determine the average brightness value as the ambient brightness of the reading environment where the target person is located.

[0078] The monitoring device can detect the reading posture of the target person through human posture detection to obtain reading posture information. Based on the reading posture information, the reading posture of the target person can be determined. The posture types of the reading posture may include sitting, lying and standing.

[0079] The monitoring device can detect the position information of the eyes of the target person and the position information of the reading material in the monitoring video image, and determine the eye distance between the target person and the reading material based on the eye position information and the position information of the reading material; or, it can detect the position information of the head of the target person and the position information of the reading material, and determine the distance between the head of the target person and the reading material based on the head position information and the position information of the reading material, and determine the distance as the eye distance between the target person and the reading material.

[0080] For each detected vision influencing factor information, the monitoring device can determine the time adjustment amount corresponding to each vision influencing factor information based on the vision influencing factor information and the corresponding influence degree of the vision influencing factor information, and then adjust the first maximum reading time based on the time adjustment amount corresponding to each vision influencing factor information.

[0081] Alternatively, the monitoring device can determine the weight of each vision influencing factor information in the first maximum reading time based on the corresponding influence degree of the vision influencing factor information, obtain the reading time component corresponding to the vision influencing factor information, and then adjust the reading time component based on the adjustment strategy of the vision influencing factor information, sum up the adjusted reading time components corresponding to each vision influencing factor information, and use the summed reading time to update the first maximum reading time.

[0082] Step 130: When it is determined that the continuous reading time of the target person reaches the target maximum reading time, output eye rest prompt information.

[0083] After the target person enters the reading state, his / her reading time can be recorded. If the recorded continuous reading time reaches the target maximum reading time, it means that the target person's eye use time has reached the healthy critical value. Continuing to read will cause obvious visual fatigue and excessive eye use. At this time, an eye rest reminder message can be output to remind the target person to pay attention to eye rest, prevent visual fatigue and excessive eye use, and reduce the risk of myopia.

[0084] For example, during the reading process, the target person may temporarily stop reading and then resume reading. In this scenario, the monitoring device can pause the timing of the reading time and continue the timing after the target person resumes the reading state. Specifically, the monitoring device can pause the timing of the reading time when it detects that the target person changes from the reading state to the non-reading state, and continue the timing of the reading time when it detects that the target person recovers from the non-reading state to the reading state within a preset time period after the change to the non-reading state; when it detects that the target person does not recover from the non-reading state to the reading state within a preset time period after the change to the non-reading state, it is determined that the target person has exited the reading state and the monitoring ends.

[0085] The vision protection method provided by the embodiment of the present invention, when determining that the target person in the monitoring video image enters the reading state, identifies the type of reading material of the target person in the monitoring video image, and determines the first maximum reading time according to the type of reading material, and can set different first maximum reading times for different reading scenes; after determining the first maximum reading time in the current reading scene, detect at least one vision influencing factor information of the target person, and adjust the first maximum reading time based on each vision influencing factor information and the corresponding influence degree to obtain the target maximum reading time, and then output the eye rest prompt information when it is determined that the continuous reading time of the target person reaches the target maximum reading time. In this way, the target person can be reminded to take a rest through the eye rest prompt information, and the intelligent monitoring and information prompt of excessive eye use are realized, so as to correct bad eye habits in time and protect eyesight. At the same time, it can dynamically plan the appropriate maximum reading time for the target person according to the real-time vision influencing factor information in different reading scenes, taking into account the influence of multiple vision influencing factors on vision, with strong adaptability and high intelligence, and improving the vision protection effect.

[0086] based on Figure 1 Corresponding to the vision protection method of the embodiment, in an exemplary embodiment, when the monitoring device detects that the target person enters the reading state based on the monitoring video image, the influence weight of each vision influencing factor information on the first maximum reading time can be determined based on the influence degree corresponding to each vision influencing factor information, and the respective reading time components can be obtained. Then, the influence of each vision influencing factor information on the respective reading time components is determined, and the respective reading time components are adjusted according to the influence. Finally, the adjusted reading time components are added together to obtain the first maximum reading time in the current state.

[0087] Specifically, adjusting the first maximum reading time based on each vision influencing factor information and the corresponding influence degree to obtain the target maximum reading time may include: for each vision influencing factor information, determining the reading time component corresponding to the vision influencing factor information based on the first maximum reading time and the influence degree corresponding to the vision influencing factor information; adjusting the reading time component based on the adjustment strategy of the vision influencing factor information to obtain the target reading time component; summing the target reading time components corresponding to each vision influencing factor information to obtain the target maximum reading time.

[0088] For example, after the target person enters the reading state, the type of reading material can be determined, such as a book. Based on the type of reading material, the first maximum reading time T can be determined. Assuming that the brightness influence of the ambient brightness is a, the reading posture influence is b, and the reading distance influence is c, the reading time component occupied by the ambient brightness is a*T, the reading time component occupied by the reading posture is b*T, and the reading time component occupied by the eye distance is c*T. The monitoring device can monitor the reading posture, eye distance and ambient brightness of the target person in real time based on the monitoring video image. Assuming that the reading posture is detected to be a bad posture and the eye distance is greater than the first distance threshold and less than the second distance threshold, the time adjustment amount can be determined based on the difference between the reading posture and the standard posture and the visual acuity influence coefficient of the reading posture on vision, and b*T can be adjusted with the time adjustment amount to obtain the adjusted target reading time component t1; at the same time, the time adjustment amount can be determined based on the eye distance and the preset distance influence factor, and c*T can be adjusted with the time adjustment amount to obtain the adjusted target reading time component t2. Then, the reading time a*T+t1+t2 can be used to update T, thereby achieving the purpose of dynamically planning an appropriate first maximum reading time based on the information of vision influencing factors, which has strong adaptability.

[0089] It can be understood that the sum of the influences corresponding to the information of various vision influencing factors is 1. For example, if the information of vision influencing factors includes brightness influence a, reading posture influence b and reading distance influence c, then a+b+c=1.

[0090] Exemplarily, when the monitoring device detects changes in information on vision-influencing factors such as ambient brightness, the target person's reading posture, or the target person's eye distance, the current first maximum reading time can be subtracted from the duration of continuous reading in this state to obtain the current remaining reading time. Afterwards, the proportion of each vision-influencing factor information to the remaining reading time can be determined based on the degree of influence of each vision-influencing factor information, and then the time adjustment amount corresponding to each vision-influencing factor information after the change can be determined to adjust the respective proportions, and the remaining reading time can be re-determined by summing up the adjusted proportions, and this cycle is repeated until the remaining reading time is 0. The monitoring device can output an eye rest prompt to remind the target person that the reading time has reached the first maximum reading time and needs to take a rest.

[0091] In an exemplary embodiment, the vision influencing factor information includes the ambient brightness, and the influence degree corresponding to the vision influencing factor information includes the brightness influence degree. Accordingly, adjusting the reading time component based on the adjustment strategy of the vision influencing factor information to obtain the target reading time component may include: when the ambient brightness is within the preset brightness range, determining the brightness ratio of the brightness difference between the ambient brightness and the reference brightness relative to the reference brightness; determining the first time adjustment amount corresponding to the ambient brightness based on the brightness ratio, the reading time component and the first adjustment coefficient; subtracting the first time adjustment amount from the reading time component to obtain the target reading time component. Among them, the first adjustment coefficient can be set in advance through experimental research or based on empirical values.

[0092] Furthermore, the vision protection method may also include: when the ambient brightness is not within a preset brightness range, outputting a first prompt message; the first prompt message is used to prompt the target person to improve the ambient brightness of the reading environment.

[0093] Exemplarily, determining the first duration adjustment amount corresponding to the ambient brightness based on the brightness ratio, the reading time component and the first adjustment coefficient may include: determining the product of the brightness ratio, the reading time component and the first adjustment coefficient, and determining the product as the first duration adjustment amount corresponding to the ambient brightness.

[0094] Exemplarily, determining the first duration adjustment amount corresponding to the ambient brightness based on the brightness ratio, the reading duration component, and the first adjustment coefficient may include: obtaining a first brightness corresponding to the reading area and a second brightness corresponding to the background area in the surveillance video image; determining a contrast coefficient between the reading area and the background area based on the brightness difference between the first brightness and the second brightness; and determining the first duration adjustment amount based on the reading duration component, the brightness ratio, the first adjustment coefficient, and the contrast coefficient. The background area may be an area in the surveillance video image other than the reading area.

[0095] Specifically, assuming that the preset brightness range is A to B, and the reference brightness is C, where the reference brightness represents the best reading environment brightness. If the ambient brightness is not within the preset brightness range, it means that the current reading environment brightness has a great impact on vision and is not suitable for reading, then the first prompt information is output to remind the target person to improve the ambient brightness of the reading environment. If the ambient brightness is within the preset brightness range, it means that the overall reading environment is relatively suitable. At this time, the brightness ratio F can be determined according to formula (2):

[0096]

[0097] Wherein, x represents the ambient brightness detected based on the surveillance video image.

[0098] At the same time, the center of the target person's reading material in the surveillance video image can be centrally metered to obtain a first brightness corresponding to the reading material area, and the second brightness corresponding to the background area can be determined based on the first brightness and the overall brightness of the surveillance video image. Specifically, the brightness difference between the overall brightness of the surveillance video image and the first brightness can be determined as the second brightness corresponding to the background area.

[0099] The first brightness can reflect the brightness around the eyes of the target person. If the first brightness is greater than the second brightness, it can be determined that the eyes of the target person are under a dark background, and if the first brightness is less than or equal to the second brightness, it can be determined that the eyes of the target person are under a bright background.

[0100] The brightness difference can be divided into four levels, for example, and the brightness difference range included in each level can be different. Each level corresponds to a contrast coefficient under a dark background and a contrast coefficient under a bright background. Based on the corresponding relationship, a first data table as shown in Table 2 can be generated for querying the contrast coefficient.

[0101] Table 2

[0102]

[0103] After obtaining the first brightness and the second brightness, the background type can be determined according to the first brightness and the second brightness, and the contrast coefficient between the reading area and the background area can be obtained by querying Table 2 according to the brightness difference between the first brightness and the second brightness.

[0104] Then, based on the reading time component Tx, the brightness ratio F, the first adjustment coefficient G1 and the contrast coefficient E, the first time adjustment amount ΔT1 can be determined according to the following formula (3):

[0105] ΔT1=Tx×F×G1+Tx×E (3)

[0106] The contrast coefficient E can be obtained by querying Table 2, F×G1+E<1. It can be understood that ΔT1<Tx.

[0107] For example, taking ambient brightness as an example, assuming that the first maximum reading time is 100, the reference brightness is 600, the brightness influence of ambient brightness is 30%, the currently detected ambient brightness is 400, and the target person's eyes are under a dark background. The contrast difference belongs to level 2 in Table 2. The contrast coefficient can be β2 through Table 2, and the first time adjustment amount ΔT1 can be determined as 100×30%×(600-400) / 600×G1+100×30%*β2, where (600-400) / 600×G1+β2<1.

[0108] In the process of monitoring the ambient brightness, if the detected position change of the target person is greater than the preset change threshold, it means that the position of the target person has changed significantly, such as the handheld reading material has moved to another position. At this time, the monitoring device can re-detect the brightness of the reading environment around the target person's position based on the collected monitoring video image, and readjust the first maximum reading time and the remaining reading time according to the above method. In this way, the maximum reading time of the target user can be dynamically adjusted according to the impact of the light brightness of the reading environment on vision, reducing the risk of myopia.

[0109] In an example embodiment, the vision influencing factor information includes the reading posture information of the target person, and the influence degree corresponding to the vision influencing factor information includes the reading posture influence degree. Accordingly, adjusting the reading time component based on the adjustment strategy of the vision influencing factor information to obtain the target reading time component may include: determining the posture type and head deflection angle of the target person based on the reading posture information; when the head deflection angle is less than a preset angle threshold, obtaining the vision influence coefficient corresponding to the posture type; determining the second adjustment coefficient based on the head deflection angle, the preset angle threshold and the vision influence coefficient, and determining the second time adjustment amount corresponding to the reading posture information based on the reading time component and the second adjustment coefficient; subtracting the second time adjustment amount from the reading time component to obtain the target reading time component.

[0110] Based on this, the vision protection method may further include: when the head deflection angle is greater than or equal to a preset angle threshold, outputting a second prompt message; the second prompt message is used to prompt the target person to adjust the reading posture.

[0111] Specifically, after the target person enters the reading state, the monitoring device can perform human posture detection on the target person in the monitoring video image, obtain reading posture information, and identify the posture type of the target person according to the human skeleton points in the reading posture information. Then the body skewness of the target person is detected, and the degree of bad reading posture is evaluated by the degree of human body skewness. For example, the left and right deflection angles of the head of the target person can be measured with the vertical direction of the cross section of the head of the target person and the reading material as the center, and the head deflection angle of the target person can be obtained. Alternatively, when the reading posture of the target person is identified as a bad posture based on the reading posture information, the posture type and head deflection angle of the target person can be determined. For example, when the reading posture of the target person is identified as a bad posture based on the reading posture information, the head deflection angle of the target person can be determined based on the reading posture information, and when the head deflection angle is less than a preset angle threshold, the posture type of the target person is determined.

[0112] If the head deflection angle is greater than or equal to the preset angle threshold, it means that the target person's current reading posture is poor, which will have a great impact on vision. In this case, a second prompt message can be output to prompt the target person to adjust his reading posture to ensure that the target person maintains a good reading posture and reduces the risk of myopia.

[0113] If the head deflection angle is less than the preset angle threshold, indicating that the current reading posture of the target person is in an acceptable state, the adjustment amount of the reading time component corresponding to the reading posture information can be determined according to the posture type of the reading posture and the degree of badness of the current posture, and then the reading time component can be adjusted to adapt to the influence of the reading posture on vision. The posture types may include sitting, lying and standing. Considering that different reading postures have different influences on vision, the monitoring device may pre-establish a second data table, which is used to store the corresponding relationship between the posture type and the vision influence coefficient. The vision influence coefficient may characterize the influence of the posture type on vision.

[0114] When the posture type is sitting, the second adjustment coefficient S1 corresponding to the sitting posture can be determined according to the following formula (4):

[0115]

[0116] Among them, σ represents the head deflection angle, ε represents the vision impact coefficient corresponding to the sitting posture, and θ represents the preset angle threshold.

[0117] When the posture type is lying posture, the second adjustment coefficient S2 corresponding to the lying posture can be determined according to the following formula (5):

[0118]

[0119] Among them, σ represents the head deflection angle, ε+d represents the vision impact coefficient corresponding to the lying posture, and θ represents the preset angle threshold.

[0120] When the posture type is standing, the second adjustment coefficient S3 corresponding to the standing posture can be determined according to the following formula (6):

[0121]

[0122] Among them, σ represents the head deflection angle, ε+e represents the vision impact coefficient corresponding to the standing posture, and θ represents the preset angle threshold.

[0123] After obtaining the second adjustment coefficient, the product of the second adjustment coefficient and the reading time component corresponding to the reading posture information can be determined as the second time adjustment amount, and then the second time adjustment amount can be subtracted from the reading time component corresponding to the reading posture information to adjust the reading time component corresponding to the reading posture information.

[0124] When the reading posture of the target person changes during the reading process, the monitoring device can readjust the first maximum reading time and the remaining reading time according to the above method based on the new reading posture information of the target person monitored. In this way, the reading time of the target user can be dynamically adjusted according to the impact of the reading posture on vision, thereby reducing the risk of myopia.

[0125] In an example embodiment, the vision influencing factor information may include the eye distance of the target person from the reading material, and the influence degree corresponding to the vision influencing factor information includes the reading distance influence degree. Accordingly, adjusting the reading time component based on the adjustment strategy of the vision influencing factor information to obtain the target reading time component may include: when the eye distance is greater than the first distance threshold and less than the second distance threshold, determining the target time based on the preset distance influencing factor, the eye distance and the reading time component; and updating the reading time component using the target time to obtain the target reading time component.

[0126] Furthermore, the vision protection method may also include: when the eye distance is less than or equal to the first distance threshold, outputting a third prompt message; the third prompt message is used to prompt the target person to adjust the reading distance.

[0127] Specifically, the monitoring device can detect the distance between the target person's eyes and the reading material based on the monitoring video image to obtain the target person's eye distance. If the eye distance is less than or equal to the first distance threshold, it means that the target person's eyes are too close to the reading material, which has a great impact on vision. Then, a third prompt message can be output to remind the target person that the current reading distance is too close and that a certain distance needs to be maintained from the reading material to avoid the formation of myopia. If the eye distance is greater than the first distance threshold and less than the second distance threshold, it means that the reading distance is within an acceptable range, but different distances will still have different effects on vision. At this time, the target time Tm can be determined based on the preset distance influence factor f, the eye distance L, and the reading time component T3 corresponding to the eye distance using the following formula (7):

[0128]

[0129] Wherein, L1 represents the first distance threshold, L2 represents the second distance threshold, and f is greater than 1.

[0130] For example, the first distance threshold may be 20 cm, and the second distance threshold may be 30 cm. When the eye distance is 20 cm to 30 cm, the degree of influence on vision within this distance range is f times greater than that above 30 cm.

[0131] The monitoring device can monitor the target person's eye distance in real time. When a large change in the eye distance is detected, such as a change in the eye distance greater than a preset distance threshold, the first maximum reading time and the remaining reading time can be readjusted. In this way, the reading time of the target user can be dynamically adjusted according to the impact of the eye distance on vision, reducing the risk of myopia.

[0132] Based on the vision protection methods of the above-mentioned embodiments, in an exemplary embodiment, after outputting eye rest reminder information, the method also includes: obtaining the eye rest time of the target person; when the eye rest time is less than a preset rest time threshold and it is detected that the target person has re-entered the reading state, continuing to output the eye rest reminder information.

[0133] In this way, by monitoring the target person's eye rest time, it can be ensured that the target person can get sufficient rest after using their eyes, avoid excessive visual fatigue, and further improve the effect of vision protection.

[0134] Based on the methods of the above embodiments, Figure 2 The second flow chart of the vision protection method provided by the embodiment of the present invention is exemplarily shown. Figure 2 As shown, after determining that the target person in the monitoring video image has entered the reading state, the monitoring device can determine the first maximum reading time according to the identified reading material type, and at the same time determine the ambient brightness of the reading environment, the reading posture of the target person, the eye distance and other vision influencing factors through the analysis of the monitoring video image, and dynamically adjust the first maximum reading time according to the information of each vision influencing factor monitored, until the continuous reading time of the target person reaches the first maximum reading time, output the eye rest prompt information to remind the target person to pay attention to rest, avoid excessive eye use and visual fatigue. After reminding the target person to pay attention to rest, the monitoring device can continue to monitor the reading state of the target person and count the eye rest time. If the preset rest time threshold is not reached but the target person enters the reading state again, the eye rest prompt information can be continuously output until the eye rest time reaches the specified preset rest time threshold and then reset the system. During the reading process, the target person may temporarily stop reading halfway and then resume reading. In this scenario, the monitoring device can pause the timing of the reading time and continue the timing after the target person resumes the reading state within the preset time period. If the target person does not return to the reading state from the non-reading state within the preset time period, the timer will be reset and the system will be reset.

[0135] according to Figure 2The method of the corresponding embodiment can first determine whether the reading environment brightness is within the preset brightness range. If it is not, that is, too dark or excessive, it means that the current reading environment brightness has a greater impact on vision and is not suitable for reading, and then output a first prompt message to remind the target person to improve the ambient brightness of the reading environment. If the ambient brightness is within the preset brightness range, it means that the target person is in an acceptable reading environment brightness. At this time, the information of vision-influencing factors such as reading posture and eye distance is monitored, and the first maximum reading time is dynamically adjusted based on these vision-influencing factors. In this way, it can be prioritized to ensure that the target person reads in a suitable reading environment brightness.

[0136] It is understandable that in the process of real-time monitoring of reading posture and eye distance, the ambient brightness can also be monitored in real time, and the first maximum reading time can be dynamically adjusted according to the monitored ambient brightness, reading posture and eye distance.

[0137] Understandably, Figure 2 The method of the corresponding embodiment is illustrated by taking the real-time monitoring of reading posture and eye distance when the ambient brightness is within the preset brightness range as an example, but it does not limit the vision protection method of the present invention, that is, the information of vision influencing factors such as ambient brightness, reading posture and eye distance can be monitored in parallel without distinguishing priorities.

[0138] The vision protection method provided by the embodiment of the present invention can monitor the ambient brightness of the target person's reading environment based on the monitoring device, identify the target user's reading material type, monitor and record various vision influencing factors that can reflect the reading habits of the target person during the reading process, and dynamically plan an appropriate first maximum reading time for the target user based on these vision influencing factors to adapt to the impact of different vision influencing factors on vision, reduce the hidden dangers of myopia, and have strong adaptability and high intelligence. When the target person has poor reading habits, prompt information can be output in time to prompt the target user to correct bad reading habits, thereby achieving the effect of protecting vision.

[0139] The vision protection device provided by the present invention is described below. The vision protection device described below and the vision protection method described above can be referenced to each other.

[0140] Figure 3 The structural diagram of the vision protection device provided by the embodiment of the present invention is exemplarily shown. Figure 3As shown, the vision protection device may include: a type identification module 310, which is used to identify the type of reading material of the target person when it is determined that the target person in the monitoring video image enters a reading state; a time determination module 320, which is used to determine a first maximum reading time according to the type of reading material; a time adjustment module 330, which is used to obtain at least one vision influencing factor information of the target person, and adjust the first maximum reading time based on the vision influencing factor information and the corresponding influence degree to obtain a target maximum reading time; an information prompt module 340, which is used to output eye rest prompt information when it is determined that the continuous reading time of the target person reaches the target maximum reading time.

[0141] In an example embodiment, the duration adjustment module 330 may include: a duration component determination unit, used to determine, for each vision influencing factor information, a reading time component corresponding to the vision influencing factor information based on the first maximum reading time and the influence degree corresponding to the vision influencing factor information; a duration component adjustment unit, used to adjust the reading time component based on the adjustment strategy of the vision influencing factor information to obtain a target reading time component; and a duration determination unit, used to sum the target reading time components corresponding to each vision influencing factor information to obtain a target maximum reading time.

[0142] In an example embodiment, the information on vision influencing factors includes ambient brightness; accordingly, the duration component adjustment unit may include: a first determination subunit, used to determine the brightness ratio of the brightness difference between the ambient brightness and the reference brightness relative to the reference brightness when the ambient brightness is within a preset brightness range; a second determination subunit, used to determine the first duration adjustment amount corresponding to the ambient brightness based on the brightness ratio, the reading duration component and the first adjustment coefficient; and a first adjustment subunit, used to subtract the first duration adjustment amount from the reading duration component to obtain a target reading duration component.

[0143] In an example embodiment, the second determination subunit can be specifically used to: obtain a first brightness corresponding to a reading material area and a second brightness corresponding to a background area in a surveillance video image; determine a contrast coefficient between the reading material area and the background area based on a brightness difference between the first brightness and the second brightness; and determine a first duration adjustment amount based on a reading duration component, a brightness ratio, a first adjustment coefficient, and a contrast coefficient.

[0144] In an example embodiment, the vision influencing factor information includes the reading posture information of the target person; accordingly, the duration component adjustment unit may include: a third determination subunit, used to determine the posture type and head deflection angle of the target person based on the reading posture information; an acquisition subunit, used to acquire the vision influence coefficient corresponding to the posture type when the head deflection angle is less than a preset angle threshold; a fourth determination subunit, used to determine the second adjustment coefficient based on the head deflection angle, the preset angle threshold and the vision influence coefficient, and determine the second duration adjustment amount corresponding to the reading posture information based on the reading duration component and the second adjustment coefficient; a second adjustment subunit, used to subtract the second duration adjustment amount from the reading duration component to obtain the target reading duration component.

[0145] In an example embodiment, the vision influencing factor information includes the eye distance of the target person from the reading material; accordingly, the duration component adjustment unit may include: a fifth determination subunit, used to determine the target duration based on the preset distance influencing factor, the eye distance and the reading duration component when the eye distance is greater than a first distance threshold and less than a second distance threshold; an updating unit, used to update the reading duration component using the target duration to obtain a target reading duration component.

[0146] In an example embodiment, the duration adjustment module 330 can also be used to: when it is determined that the reading material type has changed, obtain the second maximum reading time after the reading material type has changed, and determine the remaining reading time and the reading time interval when the reading material type has changed; determine the target remaining reading time based on the ratio of the first maximum reading time to the second maximum reading time, the remaining reading time, and the ratio coefficient corresponding to the reading time interval; and adjust the first maximum reading time based on the target remaining reading time.

[0147] In an exemplary embodiment, the vision protection device may further include an eye rest monitoring module, which is used to: obtain the eye rest duration of the target person after the information prompt module 340 outputs the eye rest prompt information; when the eye rest duration is less than a preset rest duration threshold and it is detected that the target person has re-entered the reading state, continue to output the eye rest prompt information.

[0148] Figure 4 An example of a structural diagram of an electronic device is shown in FIG. Figure 4As shown, the electronic device may include: a processor 410, a communication interface 420, a memory 430 and a communication bus 440, wherein the processor 410, the communication interface 420 and the memory 430 communicate with each other via the communication bus 440. The processor 410 may call the logic instructions in the memory 430 to execute the vision protection method provided by any of the above method embodiments.

[0149] In addition, the logic instructions in the above-mentioned memory 430 can be implemented in the form of a software functional unit and can be stored in a computer-readable storage medium when it is sold or used as an independent product. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk and other media that can store program codes.

[0150] On the other hand, the present invention also provides a computer program product, which includes a computer program. The computer program can be stored on a computer-readable storage medium. When the computer program is executed by a processor, the computer can execute the vision protection method provided by any of the above method embodiments.

[0151] On the other hand, the present invention further provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, is implemented to execute the vision protection method provided by any of the above method embodiments.

[0152] By way of example, computer readable storage media include non-transitory computer readable storage media.

[0153] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0154] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0155] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for protecting eyesight, characterized in that: include: In the case of determining that the target person in the surveillance video image enters a reading state, identifying the type of reading material of the target person, and determining a first maximum reading time according to the type of reading material; Acquire at least one vision influencing factor information of the target person, and adjust the first maximum reading time based on each vision influencing factor information and the corresponding influence degree to obtain a target maximum reading time; When it is determined that the continuous reading time of the target person reaches the target maximum reading time, eye rest prompt information is output.

2. The eyesight protection method according to claim 1, characterized in that: The adjusting the first maximum reading time based on the information of each vision influencing factor and the corresponding influence degree to obtain a target maximum reading time includes: For each piece of vision influencing factor information, based on the first maximum reading time and the influence degree corresponding to the vision influencing factor information, determine the reading time component corresponding to the vision influencing factor information; Adjusting the reading time component based on the adjustment strategy of the vision influencing factor information to obtain a target reading time component; The target reading time components corresponding to the vision influencing factor information are summed to obtain the target maximum reading time.

3. The eyesight protection method according to claim 2, characterized in that: The vision influencing factor information includes the ambient brightness; the adjustment strategy based on the vision influencing factor information adjusts the reading time component to obtain the target reading time component, including: When the ambient brightness is within a preset brightness range, determining a brightness ratio of a brightness difference between the ambient brightness and a reference brightness relative to the reference brightness; Determine a first duration adjustment amount corresponding to the ambient brightness based on the brightness proportion, the reading duration component and a first adjustment coefficient; The first duration adjustment amount is subtracted from the reading duration component to obtain the target reading duration component.

4. The eyesight protection method according to claim 3, characterized in that: The determining the first duration adjustment amount corresponding to the ambient brightness based on the brightness proportion, the reading duration component and the first adjustment coefficient includes: Acquire a first brightness corresponding to a reading area and a second brightness corresponding to a background area in the surveillance video image; determining a contrast coefficient between the reading area and the background area based on a brightness difference between the first brightness and the second brightness; The first duration adjustment amount is determined based on the reading duration component, the brightness ratio, the first adjustment coefficient and the contrast coefficient.

5. The eyesight protection method according to claim 2, characterized in that: The vision influencing factor information includes the reading posture information of the target person; The adjustment strategy based on the information of the factors affecting vision adjusts the reading time component to obtain the target reading time component, including: Determining the posture type and head deflection angle of the target person based on the reading posture information; When the head deflection angle is less than a preset angle threshold, obtaining a vision impact coefficient corresponding to the posture type; Determine a second adjustment coefficient based on the head deflection angle, the preset angle threshold and the vision impact coefficient, and determine a second duration adjustment amount corresponding to the reading posture information based on the reading duration component and the second adjustment coefficient; The second duration adjustment amount is subtracted from the reading duration component to obtain the target reading duration component.

6. The eyesight protection method according to claim 2, characterized in that: The vision influencing factor information includes the eye distance of the target person from the reading material; the adjustment strategy based on the vision influencing factor information adjusts the reading time component to obtain the target reading time component, including: When the eye distance is greater than a first distance threshold and less than a second distance threshold, determining a target duration based on a preset distance influencing factor, the eye distance and the reading duration component; The target reading time component is updated using the target reading time component to obtain the target reading time component.

7. The eyesight protection method according to any one of claims 1 to 6, characterized in that: The method further comprises: When it is determined that the type of the reading material has changed, obtaining the second maximum reading time after the type of the reading material has changed, and determining the remaining reading time and the reading time interval when the type of the reading material has changed; Determine a target remaining reading time based on a ratio of the first maximum reading time to the second maximum reading time, the remaining reading time, and a ratio coefficient corresponding to the reading time interval; The first maximum reading time is adjusted based on the target remaining reading time.

8. The eyesight protection method according to any one of claims 1 to 6, characterized in that: After outputting the eye rest prompt information, the method further includes: Obtaining the target person's eye rest time; When the eye rest time is less than a preset rest time threshold and it is detected that the target person has re-entered the reading state, the eye rest prompt information continues to be output.

9. A vision protection device, characterized in that: include: A type identification module, used to identify the type of reading material of the target person in the case where it is determined that the target person in the surveillance video image enters a reading state; A duration determination module, used to determine a first maximum reading duration according to the type of reading material; A duration adjustment module, used for obtaining at least one vision influencing factor information of the target person, and adjusting the first maximum reading duration based on each vision influencing factor information and the corresponding influence degree to obtain a target maximum reading duration; The information prompt module is used to output eye rest prompt information when it is determined that the continuous reading time of the target person reaches the target maximum reading time.

10. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the computer program, the eyesight protection method according to any one of claims 1 to 8 is implemented.

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