A light transmittance adjusting method and device

Abstract

The application discloses a light transmittance adjusting method and device, which can be applied to the technical field of intelligent automobiles. The light transmittance adjusting method comprises the following steps: acquiring incident light intensity of N first areas included in a vehicle window glass at a first time point, wherein N is an integer greater than 1 (201), then determining a target light transmittance of each of the N first areas according to the incident light intensity at the first time point (202), and adjusting the light transmittance of the first area to the target light transmittance (203). Through the method, the light transmittance of the vehicle window glass can be adjusted in a region-by-region manner, so that the light transmittance on the vehicle window glass can form a gradual change effect, the interference of strong light on a driver can be avoided, and the influence on vehicle driving safety can be reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of intelligent vehicles, and in particular to a light transmittance adjustment method and device. BACKGROUND

[0002] When driving at night, the high beam of an oncoming vehicle will cause great visual interference to the driver, and even cause the driver to lose vision temporarily, thereby causing serious safety hazards. Using a mechanical device to control the windshield or sun visor, or using a glass material to quickly block light, often blocks the driver's line of sight while blocking light, limiting the completeness of the driver's access to road condition information, and thus affecting the correctness of the driving decision. SUMMARY

[0003] The present application provides a light transmittance adjustment method and device, which can avoid the interference of strong light on the driver and reduce the impact on vehicle driving safety.

[0004] In a first aspect, the embodiments of the present application provide a light transmittance adjustment method, which comprises: a light transmittance adjustment device obtaining incident light intensity of N first regions included in a windshield glass at a first time, N being an integer greater than 1, determining a target light transmittance of each of the N first regions according to the incident light intensity at the first time, and adjusting the light transmittance of the first region to the target light transmittance.

[0005] Through this method, the light transmittance of the windshield glass can be adjusted regionally. If the incident light intensity of any two first regions is different, the target light transmittance of the two first regions will also be different, so that the target light transmittance on the windshield glass can form a spatially gradual effect. In the case of strong light irradiation (for example, the oncoming vehicle turns on the high beam), the light transmittance can be adaptively adjusted according to the incident light intensity, effectively reducing the impact of strong light on the driver and improving driving safety.

[0006] In one possible implementation, the N first regions include a second region and a third region, the incident light intensity of the second region at the first time is greater than the incident light intensity of the third region at the first time, and the target light transmittance of the second region is less than the target light transmittance of the third region. It can be understood that the second region includes one or more first regions, the third region includes one or more first regions, and the number of first regions included in the second region and the third region is less than or equal to N. In this way, the greater the incident light intensity of a region, such as the second region, the lower the target light transmittance; the smaller the incident light intensity of a region, such as the third region, the greater the target light transmittance, so that the light transmittance of any number of first regions with different incident light intensities is different, so that the light transmittance on the windshield glass can form a spatially gradual effect.

[0007] In a possible implementation, the target light transmittance of each of the N first areas is determined according to the incident light intensity at the first time, including: the light transmittance adjusting apparatus determines the target light transmittance of the first area according to the incident light intensity of the first area at the first time and a first adjustment coefficient, the first adjustment coefficient being used to indicate a mapping relationship between the incident light intensity and the light transmittance. In this way, adaptive adjustment of the light transmittance of each area of the vehicle window glass can be implemented.

[0008] In a possible implementation, the method further includes: the light transmittance adjusting apparatus acquires a plurality of frames of face images of the driver, the plurality of frames of face images corresponding to the first time, determines the eye closure degree and / or the eye closure speed of the driver according to the plurality of frames of face images, and determines the first adjustment coefficient according to the eye closure degree and / or the eye closure speed. In this implementation, the eye closure degree and / or the eye closure speed can indicate whether the driver is disturbed by the strong light, so that the target light transmittance corresponding to each incident light intensity (which can also be referred to as light intensity) can be adjusted through the first adjustment coefficient according to whether the driver is obviously disturbed by the strong light. For example, when the eye closure degree and / or the eye closure speed is large, it indicates that the driver is obviously disturbed by the strong light, and the target light transmittance corresponding to each light intensity can be adjusted to be reduced through the first adjustment coefficient, so as to reduce the disturbance of the strong light to the driver and improve the safety; for another example, when the eye closure degree and / or the eye closure speed is small, it indicates that the driver is less disturbed by the strong light, and the target light transmittance corresponding to each light intensity can be adjusted to be increased through the first adjustment coefficient, so that the driver can see the road conditions in front and improve the safety.

[0009] In a possible implementation, the first adjustment coefficient is determined according to the eye closure degree and / or the eye closure speed, including: a preset value of the first adjustment coefficient is determined according to the eye closure degree and / or the eye closure speed and a first corresponding relationship, the first corresponding relationship including a corresponding relationship between the eye closure degree and / or the eye closure speed and the preset first adjustment coefficient. In this way, the first adjustment coefficient can be adaptively adjusted, and the safety and comfort of driving the vehicle can be improved.

[0010] In a possible implementation, adjusting the light transmittance of the first area to the target light transmittance can include: adjusting the light transmittance of the first area to the target light transmittance through a target time length according to the target light transmittance of the first area and a second adjustment coefficient, the second adjustment coefficient being used to indicate a mapping relationship between the light transmittance of the first area and time. In this way, for each first area, the light transmittance of the vehicle window glass can be adjusted in a time-varying manner, giving the driver time to adapt to the change of the light transmittance, and the safety and comfort of the eyes can be improved.

[0011] In a possible implementation, the method further includes: the transmittance adjustment device acquires a plurality of face images of the driver, the plurality of face images correspond to the first time, determines the eye closure degree and / or the eye closure speed of the driver according to the plurality of face images, and determines the second adjustment coefficient according to the eye closure degree and / or the eye closure speed. In this implementation, the eye closure degree and / or the eye closure speed can indicate whether the driver is disturbed by the strong light, so that the transmittance change speed can be adjusted by the second adjustment coefficient according to whether the driver is obviously disturbed by the strong light. For example, when the eye closure degree and / or the eye closure speed is large, it indicates that the driver is obviously disturbed by the strong light, and the transmittance change can be adjusted to be more rapid by the second adjustment coefficient, so as to reduce the disturbance of the strong light on the driver and improve the safety; for another example, when the eye closure degree and / or the eye closure speed is small, it indicates that the driver is less disturbed by the strong light, and the transmittance change can be adjusted to be more slow by the second adjustment coefficient, so as to improve the comfort of the eyes of the driver.

[0012] In a possible implementation, the second adjustment coefficient is determined according to the eye closure degree and / or the eye closure speed, including: determining a preset value of the second adjustment coefficient according to the eye closure degree and / or the eye closure speed and a second corresponding relationship, and the second corresponding relationship includes a corresponding relationship between the eye closure degree and / or the eye closure speed and the preset second adjustment coefficient. In this way, the second adjustment coefficient can be adaptively adjusted, and the safety and comfort of vehicle driving can be improved.

[0013] In a second aspect, the embodiments of the present application further provide a transmittance adjustment device, which includes an acquisition unit, an acquisition unit and an adjustment unit. The acquisition unit is configured to acquire incident light intensities of N first regions included in the vehicle window glass at a first time, and N is an integer greater than 1. The processing unit is configured to determine a target transmittance of each of the N first regions according to the incident light intensities at the first time. The adjustment unit is configured to adjust the transmittance of the first region to the target transmittance.

[0014] In a possible implementation, the N first regions include a second region and a third region, the incident light intensity of the second region at the first time is greater than the incident light intensity of the third region at the first time, and the target transmittance of the second region is less than the target transmittance of the third region. It can be understood that the second region includes one or more first regions, the third region includes one or more first regions, and the number of first regions included in the second region and the third region is less than or equal to N.

[0015] In a possible implementation, the processing unit is specifically configured to: determine the target light transmittance of the first region according to the incident light intensity of the first region at the first time and a first adjustment coefficient, the first adjustment coefficient being used to indicate a mapping relationship between the incident light intensity and the light transmittance.

[0016] In a possible implementation, the acquisition unit is further configured to: acquire a plurality of facial images of the driver, the plurality of facial images corresponding to the first time; and the processing unit is further configured to: determine the eye closure degree and / or the eye closure speed of the driver according to the plurality of facial images; and determine the first adjustment coefficient according to the eye closure degree and / or the eye closure speed.

[0017] In a possible implementation, the processing unit is specifically configured to: determine the preset value of the first adjustment coefficient according to the eye closure degree and / or the eye closure speed and a first corresponding relationship, the first corresponding relationship including a corresponding relationship between the eye closure degree and / or the eye closure speed and the preset first adjustment coefficient.

[0018] In a possible implementation, the adjustment unit is specifically configured to: adjust the light transmittance of the first region to the target light transmittance through the target time length according to the target light transmittance of the first region and a second adjustment coefficient.

[0019] In a possible implementation, the acquisition unit is further configured to: acquire a plurality of facial images of the driver, the plurality of facial images corresponding to the first time; and the processing unit is specifically configured to: determine the eye closure degree and / or the eye closure speed of the driver according to the plurality of facial images; and determine the second adjustment coefficient according to the eye closure degree and / or the eye closure speed, the second adjustment coefficient being used to indicate a mapping relationship between the light transmittance of the first region and time.

[0020] In a possible implementation, the processing unit is specifically configured to: determine the preset value of the second adjustment coefficient according to the eye closure degree and / or the eye closure speed and a second corresponding relationship, the second corresponding relationship including a corresponding relationship between the eye closure degree and / or the eye closure speed and the preset second adjustment coefficient.

[0021] It should be understood that the technical effects of the above-mentioned second aspect and any possible implementation of the second aspect can refer to the technical effects of the above-mentioned first aspect and any possible implementation of the first aspect, which will not be described here again.

[0022] In a third aspect, the embodiments of the present application further provide an electronic device, which comprises a processor and a memory, the memory is used to store computer execution instructions, when the electronic device is running, the processor executes the computer execution instructions in the memory to execute the operation steps of the method of the above-mentioned first aspect and any possible design of the first aspect by using the hardware resources in the electronic device.

[0023] In a fourth aspect, the embodiments of the present application further provide a vehicle comprising the transmittance adjusting device of the second aspect and any possible implementation of the second aspect, or the electronic device of the third aspect.

[0024] In a fifth aspect, the embodiments of the present application further provide a computer readable storage medium, including computer instructions, when the computer instructions are executed on a vehicle-mounted device, causing the vehicle-mounted device to perform the technical solutions in the first aspect and any possible implementation of the first aspect.

[0025] In a sixth aspect, the embodiments of the present application further provide a computer program product, including instructions, when the computer program product is executed on a vehicle-mounted device, causing the vehicle-mounted device to perform the technical solutions in the first aspect and any possible design of the first aspect.

[0026] In a seventh aspect, the embodiments of the present application further provide a chip system, which can include a processor. The processor is coupled with a memory, and can be used to execute the method in the first aspect and any possible implementation of the first aspect. Optionally, the chip system further includes the memory. The memory is used to store a computer program (which can also be referred to as code or instructions). The processor is used to call and run the computer program from the memory, so that the device installed with the chip system executes the method in the first aspect and any possible implementation of the first aspect.

[0027] In the process of specific implementation, the transmittance adjusting device can be a chip, the input circuit can be an input pin, the output circuit can be an output pin, and the processing circuit can be a transistor, a gate circuit, a flip-flop, various logic circuits, etc. The input signal received by the input circuit can be received and input by a receiver, for example, but not limited to, and the output signal output by the output circuit can be output to a transmitter and transmitted by the transmitter, for example, but not limited to, and the input circuit and the output circuit can be the same circuit, which is used as the input circuit and the output circuit at different times. The specific implementation of the processor and various circuits is not limited in the embodiments of the present application.

[0028] In an eighth aspect, the embodiments of the present application further provide a transmittance adjusting system, which includes a vehicle window glass, and the transmittance adjusting device of the second aspect and any possible implementation of the second aspect, or the electronic device of the third aspect. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 System block diagram of the transmittance adjusting system of the windshield provided by the embodiments of the present application;

[0030] Figure 2 A flowchart of a light transmittance adjusting method provided by an embodiment of the present application is shown in FIG. 1.

[0031] Figure 3 A functional relationship curve of target light transmittance and incident light intensity provided by an embodiment of the present application is shown in FIG. 2.

[0032] Figure 4 A functional relationship curve of light transmittance and time provided by an embodiment of the present application is shown in FIG. 3.

[0033] Figure 5 A scene diagram of high beam irradiation onto a windshield provided by an embodiment of the present application is shown in FIG. 4.

[0034] Figure 6 A schematic diagram of a light transmittance adjusting device provided by an embodiment of the present application is shown in FIG. 5.

[0035] Figure 7 A schematic diagram of an electronic device provided by an embodiment of the present application is shown in FIG. 6. DETAILED DESCRIPTION

[0036] The present application will be further described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. The specific operation methods in the method embodiments can also be applied to the device embodiments. In the description of the embodiments of the present application, it should be understood by those of ordinary skill in the art that the first, second, etc. various numerical designations involved in the present application are only for the convenience of description, and do not limit the scope of the embodiments of the present application, nor represent the order of precedence. The meaning of "multiple" is two or more than two. The "and / or" describes the association relationship between the associated objects, which means that there can be three kinds of relationships, for example, A and / or B, which can represent the existence of A alone, the existence of A and B, and the existence of B alone. The character " / " generally represents an "or" relationship between the associated objects. "At least one" means one or more. At least two means two or more. "At least one", "any one" or similar expressions mean any combination of these items, including any combination of single item (one) or multiple items.

[0037] In the embodiments of the present application, the vehicle can communicate with other objects based on vehicle-to-everything (V2X) technology. For example, the communication between the vehicle and the audience-side terminal device can be implemented based on vehicle-to-vehicle (V2V) technology. The communication between the vehicle and other objects can be based on wireless fidelity (Wi-Fi), 5th generation (5G) mobile communication technology, long term evolution (LTE), and the like.

[0038] When the vehicle drives at night, the high beam of the oncoming vehicle irradiates the front windshield glass of the vehicle, and the light of the high beam can irradiate the eyes of the driver through the windshield glass, thereby affecting the observation of the driver on the road conditions in front, and danger is likely to occur. In addition, in some scenarios, the vehicle enters an environment with high illuminance, such as a road directly under the sun, which can affect the observation of the driver on the driving environment information, resulting in safety hazards.

[0039] To solve the problem that the driver is often disturbed by the high beam in front during night driving, a mechanical device can be used to control the windshield glass or a light shield such as a sun visor, but these methods will shield the driver's view while shielding the light, lack the ability to adaptively adjust the intensity of the projected light, and make it difficult for the driver to obtain complete road information when the view is shielded, thereby making it difficult to make correct decisions, and affecting the safety of vehicle driving.

[0040] To solve the above problems, the present application provides a light transmittance adjustment method, which can be executed by a light transmittance adjustment device. The light transmittance adjustment device can be arranged at any position of the vehicle, for example, can be integrated in the windshield glass, or integrated in the vehicle-mounted device (for example, integrated in the car machine, the vehicle controller or the domain controller), or arranged as an independent controller in the cabin, or integrated with other control devices in the cabin. The light transmittance adjustment device can obtain the incident light intensity of N first regions included in the windshield glass of the vehicle. For each first region: according to the incident light intensity of the first region, determine the target light transmittance of the first region, and adjust the light transmittance of the first region to the target light transmittance, so as to adjust the light transmittance of the windshield glass in different regions. The light transmittance of different first regions with different incident light intensities is different, so that the light transmittance on the windshield glass can form a spatial gradient effect, and the driving demand of the user for intelligent response to strong light interference scenarios can be met. The strong light interference scenario is, for example, a high beam interference scenario, and is, for example, a strong light sunshine scenario, which is not limited in the embodiments of the present application.

[0041] In the embodiments of the present application, the vehicle window glass can be any one or more of the front windshield, rear windshield, side window glass, sunroof (or sunroof) glass, and the type of vehicle window glass is not limited in the embodiments of the present application. The vehicle window glass can be a glass material, a composite material with glass as a base material, or other materials with certain light transmittance and strength that can realize the function of the vehicle window glass, such as a polymer material, and the specific material of the vehicle window glass is not limited in the embodiments of the present application.

[0042] The system block diagram of the light transmittance adjusting system of the windshield suitable for the present application is provided below, taking the high-intensity light source as the high beam and the vehicle window glass as the front windshield as an example.

[0043] As shown in Figure 1 The light transmittance adjusting system of the windshield includes an electronic windshield and a light transmittance adjusting device.

[0044] The electronic windshield is provided with at least one light sensing device and a light adjusting assembly. The light sensing device can collect the light intensity signal irradiated onto the electronic windshield. The light sensing device can be a photosensitive sensor, for example. In the embodiments of the present application, the electronic windshield is divided into N regions, N is an integer greater than 1, and one photosensitive sensor can be arranged in each region. In this way, the incident light intensity of each region can be obtained. Taking N as 10 as an example, the electronic windshield is divided into 10 regions with the same area, and 10 photosensitive sensors can be arranged on the electronic windshield. In order to save costs, less than N photosensitive sensors can be arranged, and the photosensitive sensors are arranged at intervals of one region, for example, in the continuous regions 1, 2 and 3, the photosensitive sensors are arranged in regions 1 and 3, respectively. The average value of the incident light intensity collected by the photosensitive sensor arranged in region 1 and the incident light intensity collected by the photosensitive sensor arranged in region 3 is the incident light intensity of region 2. If a more accurate incident light intensity on the electronic windshield is required, more photosensitive sensors can be arranged.

[0045] The light adjusting assembly is used to adjust the light transmittance of the electronic windshield. The electronic windshield can be made of a material with variable electro-optical transmittance. In this way, the light adjusting assembly can adjust the light transmittance by changing the current output to the material with variable electro-optical transmittance.

[0046] The light transmittance adjusting device can be arranged in the electronic windshield or outside the electronic windshield. The light transmittance adjusting device can include a light intensity input interface and a light transmittance output interface. The light intensity input interface can receive incident light intensity from the light sensor. The light transmittance adjusting device generates target light transmittance of each region (or position) of the electronic windshield according to the incident light intensity of each region by using a spatial gradual change scheme. Then, the light transmittance adjusting device generates light transmittance corresponding to time in each region (or position) by using a time gradual change scheme. Then, the light transmittance adjusting device outputs the expected light transmittance value corresponding to the position at the corresponding time through the light transmittance output interface to the controller. The controller calculates the required output current size, and then outputs the current to the electro-optical material through the dimming assembly to complete the gradual change adjustment of the light transmittance of the electronic windshield according to the size of the current.

[0047] Optionally, the light transmittance adjusting system can further include a camera device, and the light transmittance adjusting device can further include a picture input interface. The picture input interface can receive the face image collected by the camera device. The camera device can obtain the face image in real time. The light transmittance adjusting device can intelligently identify the eye closure degree and the eye closure speed by using the eye feature data in the face image, and then adjust the parameters in the spatial gradual change scheme and the time gradual change scheme in real time. For example, the camera device can be a camera arranged in the cabin (for example, near the A-pillar, the center console, the rearview mirror, or the steering column). The camera can be an infra-red (IR) camera, a red green black (RGB) camera, or another type of camera capable of obtaining face / eye images.

[0048] Based on the above, a light transmittance adjusting method provided by the embodiments of the present application is introduced. The method can be executed by the light transmittance adjusting device or components (such as chips, circuits, etc.) of the light transmittance adjusting device. For ease of illustration, the method executed by the light transmittance adjusting device is taken as an example for illustration. As shown in Figure 2 The method includes the following steps.

[0049] In step 201, the light transmittance adjusting device obtains incident light intensity of N first regions included in the windshield at a first time. N is an integer greater than 1.

[0050] In the embodiments of the present application, the windshield is divided into N first regions as an example for illustration. It should be understood that the N first regions in step 201 can also be replaced by N positions. Then, the light transmittance adjusting scheme for the first regions can be applied to the light transmittance adjustment of each position.

[0051] In step 202, the light transmittance adjusting device determines the target light transmittance of each first region in the N first regions according to the incident light intensity at the first time.

[0052] Among the N first regions, taking any two first regions as an example, the two first regions are respectively referred to as a second region and a third region, the incident light intensity of the second region at the first time is greater than the incident light intensity of the third region at the first time, and the target light transmittance of the second region is less than the target light transmittance of the third region. In this way, the greater the incident light intensity of the first region, the lower the target light transmittance of the first region, and the smaller the incident light intensity of the first region, the greater the target light transmittance of the first region, so that the light transmittance on the windshield can form a spatial gradient effect.

[0053] Based on the above embodiment, in the step 202, there are multiple possible implementations for determining the target light transmittance of the first region according to the incident light intensity at the first time.

[0054] Possible implementation a1: The target light transmittance of the first region is determined according to the incident light intensity at the first time and a first adjustment coefficient, wherein the first adjustment coefficient is used to indicate the mapping relationship between the incident light intensity and the light transmittance.

[0055] In one possible implementation, the target light transmittance of the first region and the incident light intensity have a certain functional relationship, and as the incident light intensity increases, the target light transmittance of the first region decreases, for example, as shown in the following formula (1):

[0056] y(x)=kx (1)

[0057] In formula (1), k is a first adjustment coefficient, y is the target light transmittance of the first region, and x is the incident light intensity of the first region at the first time.

[0058] For example, as shown in the following formula (2):

[0059]

[0060] In formula (2), k is a first adjustment coefficient, y is the target light transmittance of the first region, and x is the incident light intensity of the first region at the first time.

[0061] In another possible implementation, the first adjustment coefficient includes a first parameter for controlling the length of a first incident light intensity range and a second parameter for controlling the starting light intensity position corresponding to the first incident light intensity range, wherein the first incident light intensity range can be a range between the incident light intensity corresponding to a first preset light transmittance and the incident light intensity corresponding to a second preset light transmittance, and the second preset light transmittance is greater than the first preset light transmittance. For example, the first preset light transmittance is 3%, and the second preset light transmittance is 97%. The first preset light transmittance and the second preset light transmittance can be set according to actual needs, and the specific values are not limited here.

[0062] The determination of the target transmittance of the first region according to the incident light intensity at the first time and the first adjustment coefficient can be implemented in the following manner: the target transmittance of the first region is determined according to the incident light intensity of the first region at the first time, a first parameter for controlling the length of the first incident light intensity range, and a second parameter for controlling the starting light intensity position corresponding to the first incident light intensity range. For example, the first incident light intensity range is x11-x12, the length of the first incident light intensity range is the difference between x12 and x11, and the starting light intensity position corresponding to the first incident light intensity range is x11.

[0063] In one example, the target transmittance of the first region can be determined based on a Sigmoid function. For example, the target transmittance of the first region can be determined by using the following formula (3):

[0064]

[0065] In formula (3), y is the target transmittance of the first region, x is the incident light intensity of the first region at the first time, a is the first parameter, and b is the second parameter.

[0066] In one possible implementation, the first parameter and the second parameter can be default values. The default values can be calculated according to different incident light intensities and the acceptable transmittance of the eyes corresponding to the incident light intensities in the scenario of simulating high beam irradiation, and combined with the above formula (3) to obtain a and b as the default values of the first parameter and the second parameter, respectively.

[0067] In another possible implementation, the first parameter and the second parameter can also be values adjusted according to actual needs. For example, the first parameter and the second parameter can be adjusted according to the degree of interference of the driver with the high beam. The degree of interference can be represented by the degree of eye closure and / or the speed of eye closure, which will be described in detail below.

[0068] The light transmittance adjusting device can store a first correspondence relationship, the first correspondence relationship including a correspondence relationship between the eye closing degree and / or the eye closing speed and preset values of the first parameter and the second parameter, that is, the first correspondence relationship can be a correspondence relationship between the eye closing degree and preset values of the first parameter and the second parameter, or a correspondence relationship between the eye closing speed and preset values of the first parameter and the second parameter, or a correspondence relationship between the eye closing degree and the eye closing speed and preset values of the first parameter and the second parameter. The eye closing degree can be represented by the degree of reduction of the eye when disturbed by the high beam and the eye when not disturbed by the high beam. For example, taking the maximum distance m0 between the upper eyelid and the lower eyelid on the perpendicular line of the two eye corners when the eye is normally open as the reference, when the eye closing is disturbed by the high beam at the first time, the distance between the upper eyelid and the lower eyelid on the perpendicular line of the two eye corners is m1, at this time, the eye closing degree can be represented by the ratio between m1 and m0 (for example, represented by percentage), for example, the eye closing degree of 100% represents complete closing, and for example, the eye closing degree of 0% represents complete opening, the eye closing degree is greater, which can indicate that the driver is more disturbed by the high beam. The eye closing speed can be represented by the reduction of the distance between the upper eyelid and the lower eyelid on the perpendicular line of the two eye corners per second, which can be represented by percentage, for example, 10% per second, and for example, 30% per second, the greater the value, the faster the eye closing speed, the faster the eye closing speed can indicate that the driver is more disturbed by the high beam. It should be understood that the first correspondence relationship can also be stored in a storage device inside the vehicle, and the light transmittance adjusting device can obtain the first correspondence relationship from the storage device, and the storage position of the first correspondence relationship is not limited by the embodiments of the application.

[0069] Possible implementation a2, the light transmittance adjusting device can also obtain a plurality of frames of face images of the driver, the plurality of frames of images corresponding to the first time, according to the plurality of frames of face images, the eye closing degree and / or the eye closing speed of the driver is determined, and then the first adjustment coefficient is determined according to the eye closing degree and / or the eye closing speed. Wherein, the face image contains the eyes of the driver, which can be a partial face image (for example, only including the eye), or an image containing other parts of the human body in addition to the eyes of the driver. It can be understood that the plurality of frames of images corresponding to the first time means that the time of obtaining (for example, shooting) the plurality of frames of images can include the first time and at least one time before the first time.

[0070] Based on the possible implementation manner, the transmittance adjusting device can determine the preset value of the first adjustment coefficient according to the eye closure degree and / or the eye closure speed and the first corresponding relationship, and then determine the target transmittance of the first region according to the incident light intensity at the first time and the preset value of the first adjustment coefficient. The first corresponding relationship includes a corresponding relationship between the eye closure degree and / or the eye closure speed and the preset first adjustment coefficient.

[0071] When the first adjustment coefficient includes a first parameter for controlling the length of the first incident light intensity range and a second parameter for controlling the corresponding starting light intensity position of the first incident light intensity range, the first corresponding relationship can include a corresponding relationship between the eye closure degree and / or the eye closure speed and the preset values of the first parameter and the second parameter. The transmittance adjusting device can determine the first preset value of the first parameter and the second preset value of the second parameter corresponding to the eye closure degree and / or the eye closure speed according to the eye closure degree and / or the eye closure speed and the first corresponding relationship. In this way, the adjustment values of the first parameter and the second parameter can be determined. At the next time of the first time, the transmittance adjusting device can acquire a plurality of face images of the driver at the next time and at least one time before the next time, determine the eye closure degree and / or the eye closure speed of the driver according to the plurality of face images, and then determine the first preset value of the first parameter and the second preset value of the second parameter corresponding to the eye closure degree and / or the eye closure speed according to the first corresponding relationship. The first preset value of the first parameter and the second preset value of the second parameter determined at the next time are the adjustment values of the first parameter and the second parameter corresponding to the next time, relative to the first preset value of the first parameter and the second preset value of the second parameter determined at the first time.

[0072] Further, the transmittance adjusting device determines the target transmittance of the first region according to the incident light intensity of the first region at the first time, the first preset value of the first parameter, and the second preset value of the second parameter.

[0073] The following takes the first time t2 and the time before the first time t1 as an example to illustrate the parameters of the transmittance space gradual change scheme.

[0074] As Figure 3As shown, curve 1 is a function relationship curve of the target transmittance corresponding to the time t1 and the incident light intensity, satisfying the above formula (3), the first parameter a corresponding to the curve 1 is a1, and the second parameter b is b1. According to the characteristics of the curve 1, the gradual change interval can be divided into a low-risk zone, a medium-risk zone and a high-risk zone, which correspond to different transmittance change values respectively. Different risks can be adjusted accordingly. For example, the boundary between the low-risk zone and the medium-risk zone is x11 corresponding to the transmittance of 97%, and the boundary between the medium-risk zone and the high-risk zone is x12 corresponding to the transmittance of 3%. The incident light intensity range corresponding to the low-risk zone is 0-x11, the incident light intensity range corresponding to the medium-risk zone is x11-x12, that is, the above-mentioned first incident light intensity range, and the incident light intensity range corresponding to the high-risk zone is the incident light intensity range greater than x12.

[0075] The first parameter a and the second parameter b are adjustable parameters, wherein the first parameter a is used to control the length of the first incident light intensity range corresponding to the medium-risk zone, that is, the length of x11-x12, and b is used to control the starting light intensity position corresponding to the first incident light intensity range of the medium-risk zone, that is, the position of x11.

[0076] When the degree of eye closure and / or the degree of eye closure is detected to be large at t2, it means that the driver has been obviously disturbed by strong light, that is, the situation is very urgent at this time, and at this time, the first parameter a should be appropriately increased and the second parameter b should be appropriately reduced, so that the transmittance corresponding to the incident light intensity at any position on the curve 1 is reduced, such as Figure 3 As shown in curve 2. Compared with curve 1, the low-risk zone of curve 2 is shifted to the left, that is, the low-risk zone has a lower tolerance to risk, and the transmittance of the medium-risk zone decreases faster, which will enter the high-risk zone faster and be more inclined to safety. If the degree of eye closure and / or the degree of eye closure is detected to be small at t3, the first parameter a can be appropriately reduced and the second parameter b can be appropriately increased, for example, from curve 2 to curve 1. In this case, the strong light has little effect on the eyes, and the tolerance to risk is higher, and the medium-risk zone decreases more slowly and enters the high-risk zone more slowly.

[0077] In step 203, the transmittance adjusting device adjusts the transmittance of the first region to the target transmittance.

[0078] Based on the above embodiment, in step 203, there are many possible implementation manners, which will be described in detail through the following possible implementation manner b1 and possible implementation manner b2.

[0079] In a possible implementation b1, a current value corresponding to the target light transmittance is calculated, and then a current corresponding to the current value is output to the electrochromic variable material, so that the light transmittance of the first region is directly adjusted from the first light transmittance to the target light transmittance, where the first light transmittance is the first initial light transmittance of the first region.

[0080] In a possible implementation b2, the light transmittance of the first region is adjusted to the target light transmittance by a time-varying manner, that is, the light transmittance of the first region is adjusted from the first light transmittance to the target light transmittance through at least one intermediate light transmittance.

[0081] In a possible implementation b21 of the above step 203, the light transmittance adjusting device adjusts the light transmittance of the first region to the target light transmittance through a target time length according to the target light transmittance of the first region and a second adjustment coefficient, where the second adjustment coefficient is used to indicate a mapping relationship between the light transmittance of the first region and time.

[0082] In a possible implementation b22 of the above step 203, the light transmittance adjusting device can further acquire a plurality of frames of facial images of the driver, the plurality of frames of facial images correspond to the first time, determine an eye closure degree and / or an eye closure speed of the driver according to the plurality of frames of facial images, and determine the second adjustment coefficient according to the eye closure degree and / or the eye closure speed. Then, the light transmittance of the first region is adjusted from the first light transmittance to the target light transmittance through the target time length according to the first light transmittance of the first region at the first time, the target light transmittance, and a preset value of the second adjustment coefficient.

[0083] When the second adjustment coefficient includes a third parameter used to control the length of the first time range corresponding to the light transmittance adjustment stage and a fourth parameter used to control the starting time position of the first time range, the above implementation b21 can be implemented in the following manner: the light transmittance of the first region is adjusted from the first light transmittance to the target light transmittance through the target time length according to the first light transmittance of the first region at the first time, the target light transmittance, the third parameter used to control the length of the first time range corresponding to the light transmittance adjustment stage, and the fourth parameter used to control the starting time position of the first time range.

[0084] The light transmittance of the first region has a certain functional relationship with time, and the light transmittance of the first region decreases with the extension of time until it is adjusted to the target light transmittance. In a possible implementation, the second light transmittance of the first region at a second time is determined by using the following formula (4), the second time is any time after the first time and within the target time length, and then the light transmittance of the first region is adjusted to the second light transmittance at the second time, and the light transmittance of the first region is the target light transmittance after the target time length.

[0085]

[0086] In the formula (4), y is the second transmittance of the first region at the second time, t is the second time, c is the third parameter, d is the fourth parameter, and G is the target transmittance.

[0087] In one possible implementation, the third parameter and the fourth parameter can be default values, which can be calculated according to the formula (4) based on the acceptable transmittance change speed of the eyes from 100% to G in a simulated high beam irradiation scenario, and taken as the default values of the third parameter and the fourth parameter respectively.

[0088] In another possible implementation, the third parameter and the fourth parameter can also be values adjusted according to actual needs. For example, the third parameter and the fourth parameter can be adjusted according to the degree of interference of the driver with the high beam, which can be represented by the degree of eye closure and / or the speed of eye closure, which will be described in detail below.

[0089] The transmittance adjusting apparatus can store a second correspondence relationship, which includes the correspondence relationship between the degree of eye closure and / or the speed of eye closure and the preset values of the third parameter and the fourth parameter. That is, the second correspondence relationship can be the correspondence relationship between the degree of eye closure and the preset values of the third parameter and the fourth parameter, the correspondence relationship between the speed of eye closure and the preset values of the third parameter and the fourth parameter, or the correspondence relationship between the degree of eye closure and the speed of eye closure and the preset values of the third parameter and the fourth parameter. Details of the degree of eye closure and the speed of eye closure can be referred to the above description, which will not be repeated here. It should be understood that the second correspondence relationship can also be stored in a storage device inside the vehicle, and the transmittance adjusting apparatus can obtain the second correspondence relationship from the storage device. The storage location of the second correspondence relationship is not limited in the embodiments of the present application.

[0090] In one possible implementation of the step 203, the transmittance adjusting apparatus obtains multiple frames of facial images of the driver at the first time and at least one time before the first time, determines the degree of eye closure and / or the speed of eye closure of the driver according to the multiple frames of facial images, and then determines the third preset value of the third parameter and the fourth preset value of the fourth parameter corresponding to the degree of eye closure and / or the speed of eye closure according to the second correspondence relationship. In this way, the adjustment values of the third parameter and the fourth parameter can be determined.

[0091] Further, the transmittance adjusting apparatus adjusts the transmittance of the first region from the first transmittance to the target transmittance through the target time length according to the first transmittance of the first region at the first time, the target transmittance, the third preset value of the third parameter, and the fourth preset value of the fourth parameter.

[0092] The following example uses the first moment as t2 and the moment before the first moment as t1 to illustrate the parameters for adjusting the transmittance time gradient scheme.

[0093] like Figure 4 As shown, curve 3 is the function curve of transmittance versus time at time t1, which satisfies the above formula (4). The third parameter c of curve 3 is c1, and the fourth parameter d is d1. According to the characteristics of curve 3, the gradual interval can be divided into the adaptation stage, the change stage and the stable stage, which correspond to different transmittance change rates, which is more in line with the law of the eye observing changes in light.

[0094] For example, the boundary between the adaptation phase and the change phase is the time t2 corresponding to the rate of change of transmittance k1, and the boundary between the change phase and the stable phase is the time t4 corresponding to the rate of change of transmittance k2. The time range corresponding to the adaptation phase is 0 to t2, the time range corresponding to the change phase is t2 to t4 (which is the first time range mentioned above), and the time range corresponding to the stable phase is the time range of t4.

[0095] The third parameter c and the fourth parameter d are adjustable parameters. Among them, the third parameter c is used to control the transmittance adjustment stage (i.e., Figure 4 The length of the first time range corresponding to the change stage in the process, i.e., the length of t2 to t4, and d is used to control the starting time position of the first time range, i.e. the position of t2.

[0096] exist Figure 4 In this context, G represents the target transmittance of a specific area on the windshield, given by the spatial gradient scheme. In the temporal gradient scheme, this target transmittance is a constant. When a large degree of eye closure and / or a rapid degree of eye closure is detected, it indicates that the driver has experienced significant glare, meaning the situation is urgent. In this case, c should be appropriately increased and d decreased to make the transmittance change more rapidly. Figure 4 Curve 4 is shown.

[0097] Compared to curve 3, curve 4 shifts the change phase to the left, allowing for a faster transition from the adaptation phase to the change phase. Furthermore, the light transmittance decreases more rapidly during the change phase, leading to a quicker transition to the stable phase and ensuring driving safety. If, in the next moment, a smaller degree of eye closure and / or a slower degree of eye closure is detected, the third parameter c can be appropriately decreased and the fourth parameter d increased. For example, switching from curve 4 to curve 3. In this less urgent situation, the transition from the adaptation phase to the change phase is slower, and the light transmittance decreases more slowly during the change phase, resulting in a slower transition to the stable phase and ensuring driving comfort.

[0098] By using the above method, the degree of glare interference experienced by the driver can be determined by detecting the degree and / or speed of eye closure. Based on the degree of glare interference experienced by the driver, the parameters in the spatial and temporal gradation scheme are intelligently adjusted in real time to ensure safety and comfort.

[0099] Based on the above, this application embodiment provides a scenario simulating the high beams of an oncoming vehicle shining onto the windshield, and shows the effect after applying the aforementioned transmittance adjustment scheme, such as... Figure 5 The left image shows a scenario where the eyes are not fully closed, indicating a low level of urgency, as identified by eye feature data collected by a camera device. The right image shows a scenario where the eyes are fully closed, indicating a very urgent situation requiring quick protection from light, as identified by eye feature data collected by a camera device.

[0100] like Figure 5 In the two scenarios shown, the light transmittance adjustment device intelligently adjusts the light transmittance according to the intensity of the incident light, avoiding a "one-size-fits-all" approach. This results in low light transmittance in key areas of the windshield and high light transmittance in non-key areas. Figure 5 The two darkest areas in the image correspond to the centers of the oncoming high beams. A gradual change in light transmittance radiates outwards from these centers, creating a transition from high-risk to low-risk zones. This change in transmittance occurs gradually over time, indicating that the timing of the change is planned and not simply dictated by the controller. The left and right images, from top to bottom, represent the adaptation, change, and stabilization phases, respectively. This aligns better with how the eye perceives changing objects, helping drivers make accurate driving judgments while avoiding glare.

[0101] exist Figure 5 In the two images shown, the light transmittance changes more slowly in the left image, ensuring the eyes can adapt to changes in light comfortably. In the right image, the light transmittance at the corresponding location on the windshield is also lower, and the change in transmittance is more rapid, ensuring driving safety. This intelligent adjustment of light transmittance is achieved by acquiring real-time eye information, enabling adjustments to cope with various complex nighttime driving scenarios.

[0102] The aforementioned possible implementation a1 or a2 can achieve a spatially gradual adjustment scheme for the light transmittance of the windshield, and the aforementioned possible implementation b2 can achieve a temporally gradual adjustment scheme for the light transmittance of the windshield. In the embodiments of this application, the spatial and temporally gradual adjustment schemes for the light transmittance of the windshield can be used in combination or individually. For example, when the spatial adjustment scheme is used alone, the aforementioned possible implementation a1 or a2, as well as possible implementation b1, can be used to adjust the light transmittance of the windshield. As another example, when the temporally gradual adjustment scheme is used alone, the aforementioned possible implementation b2 can be used to perform an integrated adjustment of the windshield's light transmittance, that is, the light transmittance of all areas of the windshield is consistent.

[0103] Based on the above embodiments and the same concept, Figure 6 This is a schematic diagram of the transmittance adjustment device provided in the embodiments of this application, as shown below. Figure 6 As shown, the transmittance adjustment device 600 can perform the steps executed by the transmittance adjustment device in the above method embodiments. The transmittance adjustment device may include an acquisition unit 601, a processing unit 602, and an adjustment unit 603.

[0104] The acquisition unit 601 is used to acquire the incident light intensity of N first regions included in the window glass at the first moment, where N is an integer greater than 1;

[0105] The processing unit 602 is used to determine the target transmittance of each of the N first regions based on the incident light intensity at the first moment.

[0106] The adjustment unit 603 is used to adjust the light transmittance of the first region to the target light transmittance.

[0107] In one possible implementation, the N first regions include a second region and a third region. The incident light intensity of the second region at a first moment is greater than that of the third region at a first moment, and the target transmittance of the second region is less than that of the third region.

[0108] In one possible implementation, the processing unit 602 is specifically used to: determine the target transmittance of the first region based on the incident light intensity of the first region at a first moment and a first adjustment coefficient, wherein the first adjustment coefficient is used to indicate the mapping relationship between the incident light intensity and the transmittance.

[0109] In one possible implementation, the acquisition unit 601 is further configured to: acquire multiple frames of facial images of the driver, the multiple frames corresponding to a first moment; the processing unit 602 is further configured to: determine the degree of eye closure and / or the speed of eye closure of the driver based on the multiple frames of facial images; and determine a first adjustment coefficient based on the degree of eye closure and / or the speed of eye closure.

[0110] In a possible implementation, the processing unit 602 is specifically configured to: determine the preset value of the first adjustment coefficient according to the eye closure degree and / or the eye closure speed and a first correspondence relationship, the first correspondence relationship including a correspondence relationship between the eye closure degree and / or the eye closure speed and the preset first adjustment coefficient.

[0111] In a possible implementation, the adjustment unit 603 is specifically configured to: adjust the light transmittance of the first region to the target light transmittance in the target time length according to the target light transmittance of the first region and the second adjustment coefficient.

[0112] In a possible implementation, the acquisition unit 601 is further configured to: acquire a plurality of face images of the driver, the plurality of images corresponding to a first time; and the processing unit 602 is specifically configured to: determine the eye closure degree and / or the eye closure speed of the driver according to the plurality of face images; and determine the second adjustment coefficient according to the eye closure degree and / or the eye closure speed, the second adjustment coefficient being used to indicate a mapping relationship between the light transmittance of the first region and time.

[0113] In a possible implementation, the processing unit 602 is specifically configured to: determine the preset value of the second adjustment coefficient according to the eye closure degree and / or the eye closure speed and a second correspondence relationship, the second correspondence relationship including a correspondence relationship between the eye closure degree and / or the eye closure speed and the preset second adjustment coefficient.

[0114] The light transmittance adjustment device involves concepts, explanations, detailed descriptions and other steps related to the technical solutions provided by the embodiments of the present application. For details, refer to the descriptions of these contents in the foregoing method or other embodiments, which will not be repeated here.

[0115] According to the method provided in the embodiments of the present application, the present application further provides a light transmittance adjustment system, which includes a vehicle window glass and the light transmittance adjustment device described in any of the foregoing embodiments.

[0116] According to the method provided in the embodiments of the present application, the present application further provides a vehicle, which includes the light transmittance adjustment device described in any of the foregoing embodiments.

[0117] According to the foregoing method, Figure 7 The structural schematic diagram of the electronic device provided in the embodiments of the present application is shown in Figure 7 The electronic device 700 can include a memory 701 and a processor 702, and can further include a bus system, the processor 702 and the memory 701 can be connected through the bus system.

[0118] It should be understood that the processor 702 described above can be one chip. For example, the processor 702 can be a field programmable gate array (FPGA), can be an application specific integrated circuit (ASIC), can be a system on chip (SoC), can be a central processor unit (CPU), can be a network processor (NP), can be a digital signal processor (DSP), can be a micro controller unit (MCU), can be a programmable logic device (PLD) or other integrated chip.

[0119] In the implementation process, each step of the above method can be completed by the integrated logic circuit of the hardware in the processor 702 or the instruction in the form of software. The steps of the method disclosed in combination with the embodiments of the present application can be directly embodied as hardware processor execution, or executed by hardware and software modules in the processor 702. The software module can be located in a storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, register, etc. The storage medium is located in the memory 701, and the processor 702 reads the information in the memory 701, and combines the hardware to complete the steps of the above method.

[0120] According to the method provided in the embodiments of the present application, the present application further provides a computer program product, which includes computer program codes or instructions, and when the computer program codes or instructions run on a computer, the computer executes the method of any one of the above method embodiments.

[0121] According to the method provided in the embodiments of the present application, the present application further provides a computer readable storage medium, which stores program codes, and when the program codes run on a computer, the computer executes the method of any one of the above method embodiments.

[0122] According to the method provided in the embodiments of the present application, the present application further provides a chip system, which can include a processor. The processor is coupled with a memory and can be used to execute the method of any one of the above method embodiments. Optionally, the chip system further includes the memory. The memory is used to store a computer program (which can also be referred to as code or instruction). The processor is used to call and run the computer program from the memory, so that the device installed with the chip system executes the method of any one of the above method embodiments.

[0123] In the above embodiments, the method can be implemented by software, hardware, firmware or any combination thereof, entirely or partially. When implemented by software, the method can be implemented in the form of a computer program product, entirely or partially. The computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on a computer, the computer instructions entirely or partially generate the processes or functions according to the embodiments of the present application. Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the system, device and unit described above can refer to the corresponding process in the above method embodiments, which will not be described here.

[0124] In the several embodiments provided in the present application, it should be understood that the disclosed system, device and method can be implemented in other ways. For example, the device embodiments described above are only schematic. The division of the units is only a logical function division. There can be another division manner in actual implementation. For example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection can be indirect coupling or communication connection through some interface, device or unit, and can be electrical, mechanical or in other forms.

[0125] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A light transmittance adjusting method characterized by comprising: The method comprises: obtaining the incident light intensity of N first regions included in the vehicle window glass at a first time, N being an integer greater than 1; for each of the N first regions, determining a target light transmittance of the first region according to the incident light intensity at the first time and a first adjustment coefficient, the first adjustment coefficient being used to indicate a mapping relationship between the incident light intensity and the light transmittance, the first adjustment coefficient being determined according to the eye closure degree and / or eye closure speed of the driver; adjusting the light transmittance of the first region to the target light transmittance; wherein the adjusting of the light transmittance of the first region to the target light transmittance comprises: adjusting the light transmittance of the first region to the target light transmittance through a target time length according to the target light transmittance of the first region and a second adjustment coefficient, the second adjustment coefficient being used to control the length of a first time range corresponding to the light transmittance adjustment stage, the second adjustment coefficient also being used to control the starting time position of the first time range, and the second adjustment coefficient being determined according to the eye closure degree and / or eye closure speed.

2. The method of claim 1, wherein, The N first regions comprise a second region and a third region; the incident light intensity of the second region at the first time is greater than the incident light intensity of the third region at the first time, and the target light transmittance of the second region is less than the target light transmittance of the third region.

3. The method of claim 1 or 2, wherein, The method further comprises: obtaining a plurality of face images of the driver, the plurality of face images corresponding to a first time; determining the eye closure degree and / or eye closure speed of the driver according to the plurality of face images; determining the first adjustment coefficient according to the eye closure degree and / or eye closure speed.

4. The method of claim 3, wherein, The determination of the first adjustment coefficient according to the eye closure degree and / or eye closure speed comprises: determining a preset value of the first adjustment coefficient according to the eye closure degree and / or eye closure speed and a first correspondence relationship, the first correspondence relationship comprising a correspondence relationship between the eye closure degree and / or eye closure speed and a preset first adjustment coefficient.

5. The method of claim 4, wherein, The method further comprises: obtaining a plurality of face images of the driver, the plurality of face images corresponding to a first time; determining the eye closure degree and / or eye closure speed of the driver according to the plurality of face images; determining the second adjustment coefficient according to the eye closure degree and / or eye closure speed.

6. The method of claim 5, wherein, The determination of the second adjustment coefficient according to the eye closure degree and / or eye closure speed comprises: determining a preset value of the second adjustment coefficient according to the eye closure degree and / or eye closure speed and a second correspondence relationship, the second correspondence relationship comprising a correspondence relationship between the eye closure degree and / or eye closure speed and a preset second adjustment coefficient.

7. A light transmittance adjusting device, characterized by comprising: comprises: an obtaining unit, configured to obtain the incident light intensity of N first regions included in the vehicle window glass at a first time, N being an integer greater than 1; The processing unit is configured to determine, for each of the N first regions, a target light transmittance of the first region according to the incident light intensity at the first time and a first adjustment coefficient, the first adjustment coefficient being used to indicate a mapping relationship between the incident light intensity and the light transmittance, and the first adjustment coefficient being determined according to the eye closure degree and / or the eye closure speed of the driver. The adjusting unit is configured to adjust the light transmittance of the first region to the target light transmittance in a target time length according to the target light transmittance of the first region and a second adjustment coefficient, the second adjustment coefficient being used to control a length of a first time range corresponding to a light transmittance adjustment stage, and the second adjustment coefficient being further used to control a starting time position of the first time range, and the second adjustment coefficient being determined according to the eye closure degree and / or the eye closure speed.

8. The apparatus of claim 7, wherein, The N first regions include a second region and a third region. The incident light intensity of the second region at the first time is greater than the incident light intensity of the third region at the first time, and the target light transmittance of the second region is less than the target light transmittance of the third region.

9. The apparatus of any of claims 7-8, wherein, The obtaining unit is further configured to: obtain a plurality of face images of the driver, the plurality of face images corresponding to a first time; The processing unit is further configured to: determine the eye closure degree and / or the eye closure speed of the driver according to the plurality of face images, and determine the first adjustment coefficient according to the eye closure degree and / or the eye closure speed.

10. The apparatus of claim 9, wherein, The processing unit is specifically configured to: determine a preset value of the first adjustment coefficient according to the eye closure degree and / or the eye closure speed and a first corresponding relationship, and the first corresponding relationship includes a corresponding relationship between the eye closure degree and / or the eye closure speed and a preset first adjustment coefficient.

11. The apparatus of claim 10, wherein, The obtaining unit is further configured to: obtain a plurality of face images of the driver, the plurality of face images corresponding to a first time; The processing unit is specifically configured to: determine the eye closure degree and / or the eye closure speed of the driver according to the plurality of face images, and determine the second adjustment coefficient according to the eye closure degree and / or the eye closure speed, the second adjustment coefficient being used to indicate a mapping relationship between the light transmittance of the first region and time. The processing unit is specifically configured to:

12. The apparatus of claim 11, wherein, determine a preset value of the second adjustment coefficient according to the eye closure degree and / or the eye closure speed and a second corresponding relationship, and the second corresponding relationship includes a corresponding relationship between the eye closure degree and / or the eye closure speed and a preset second adjustment coefficient. comprise:

13. An electronic device, comprising: a memory and a processor, the memory being used to store instructions, and the processor being used to execute the instructions stored in the memory, and when the instructions stored in the memory are executed, the method in any one of claims 1 to 6 is implemented. comprise computer readable instructions, and when the computer readable instructions are read and executed by a computer, the method in any one of claims 1 to 6 is implemented.

14. A computer-readable storage medium, characterized in that, ​ 15. A computer program product, characterised in that, A computer program product comprising computer readable instructions which, when executed, implement the method of any one of claims 1 to 6.

16. A chip, characterized by A processor coupled with a memory for executing a computer program or instructions stored in the memory which, when executed, implement the method of any one of claims 1 to 6.

17. A light transmittance adjustment system, characterized by, The system comprises a window pane and the light transmittance adjustment device of any one of claims 7-12 or the electronic device of claim 13.

18. A vehicle characterized by comprising: The system comprises a window pane and the light transmittance adjustment device of any one of claims 7-12 or the electronic device of claim 13.

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