WO2022156707A1

WO2022156707A1 - Light supplementing method and light supplementing apparatus for dishwasher, and dishwasher

Info

Publication number: WO2022156707A1
Application number: PCT/CN2022/072725
Authority: WO
Inventors: 范志恒; 全永兵; 魏中科; 陈蔚; 王彩霞
Original assignee: 佛山市顺德区美的洗涤电器制造有限公司
Priority date: 2021-01-19
Filing date: 2022-01-19
Publication date: 2022-07-28

Abstract

A light supplementing method for a dishwasher, a light supplementing apparatus, and a dishwasher (100). The dishwasher (100) comprises: an image acquisition device (11) for acquiring an image of a cleaning area within the dishwasher (100); a main light supplementing lamp (121) for performing light supplementation on the image; and at least one secondary light supplementing lamp (122) for performing light supplementation on an edge area of the image. The light supplementing method comprises: acquiring an image (S11); obtaining a first brightness value of the image according to the image (S12); when the first brightness value is within a preset first brightness range, obtaining a second brightness value of an edge area of the image according to the image (S13); and when the second brightness value is outside of a preset second brightness range, adjusting the brightness of a secondary light supplementing lamp (122) so as to adjust the second brightness value (S14).

Description

Fill light method, fill light device and dishwasher for dishwasher

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims the rights of Chinese patent applications 202110071269.9, 202110069559.X, 202110071263.1 and 202110071265.0 filed on January 19, 2021, the contents of which are incorporated herein by reference.

technical field

The present application relates to the technical field of kitchen and bathroom appliances, and in particular, to a light-filling method, a light-filling device and a dishwasher for dishwashers.

Background technique

With the improvement of living standards, the use of dishwashers is increasing. The application of intelligence is becoming more and more extensive, and the corresponding requirements for dishwashers are also getting higher and higher.

The washing area of the inner cavity of the dishwasher is usually provided with a fill light. In order to take into account the cost and space, the current common design scheme is to make the camera and the fill light into an integral component, that is, the inner hole is the opening of the camera, and the outer ring is the design of the fill light. This not only facilitates the leads, but also reduces the number of openings. However, this design also has disadvantages, because its size cannot be made very large, and its proportion is too small relative to the inner cavity of the dishwasher, which is equivalent to a point light source. Due to the structural characteristics of the fill light, it is easy to cause the edge area to be relatively dark, which leads to the loss of part of the information in the collected image, which eventually leads to inaccurate image recognition and does not meet the user's expected experience.

SUMMARY OF THE INVENTION

In order to solve the above-mentioned technical problems, the purpose of the present application is to provide a light-filling method, a light-filling device and a dishwasher for a dishwasher.

In order to achieve the above object, in a first aspect of the present application, a method for supplementing light for a dishwasher is provided, wherein the dishwasher includes an image acquisition device for acquiring an image of a cleaning area in the dishwasher; a main supplementary light , used to fill light on the image; at least one secondary fill light is used to fill the edge area of the image; the fill light method includes: acquiring an image; obtaining a first brightness value of the image according to the image; In the case of being within the preset first brightness range, obtain the second brightness value of the edge area of the image according to the image; when the second brightness value is outside the preset second brightness range, adjust the secondary fill light brightness to adjust the second brightness value.

In the embodiment of the present application, the method further includes: when the first brightness value is outside the first brightness range, adjusting the brightness of the main fill light to adjust the first brightness value.

In the embodiment of the present application, when the first brightness value is outside the first brightness range, adjusting the brightness of the main fill light to adjust the first brightness value includes: when the first brightness value is smaller than the first brightness range In the case of the limit value, increase the brightness of the main fill light to increase the first brightness value; when the first brightness value is greater than the upper limit of the first brightness range, reduce the brightness of the main fill light to reduce the first brightness value. a brightness value.

In the embodiment of the present application, obtaining the first brightness value of the image according to the image includes: obtaining a brightness histogram of the image; and weighting and summing the brightness values of each pixel in the brightness histogram to obtain the first brightness value.

In the embodiment of the present application, the at least one auxiliary supplementary light includes a first auxiliary supplementary light and a second auxiliary supplementary light, and the first auxiliary supplementary light and the second auxiliary supplementary light are respectively disposed on the left and right sides of the image capturing device. are used to fill the left edge area and the right edge area of the image respectively: when the second brightness value is outside the second brightness range, adjusting the brightness of the auxiliary fill light to adjust the second brightness value includes: In the case where the second brightness value on the left side of the left edge area is outside the second brightness range, adjust the brightness of the first auxiliary light to adjust the second brightness value on the left side; in the right edge area, the second brightness value on the right side is adjusted When the value is outside the second brightness range, adjust the brightness of the second auxiliary light to adjust the second brightness value on the right.

In the embodiment of the present application, obtaining the second brightness value of the edge region of the image according to the image includes: dividing the image into multiple regions; extracting edge regions in the multiple regions according to the field of view angle of the main fill light; determining the edge region The second brightness value of ; wherein the second brightness value is the average value of the brightness values of the edge region.

In the embodiment of the present application, the main supplementary light and the auxiliary supplementary light are individually controlled through different pulse width modulation signals.

In a second aspect of the present application, there is also provided a light supplement device for a dishwasher, comprising: an image acquisition device for acquiring an image of a cleaning area; a main supplement light lamp, arranged around the image acquisition device and used for cleaning In the area, the area corresponding to the central area of the image is filled with light; at least one auxiliary fill light is arranged on at least one side of the main fill light, and is used to fill in the area corresponding to the edge area of the image in the cleaning area; a processor configured to: acquire an image; obtain a first brightness value of the image according to the image; and obtain a second brightness value of an edge region of the image according to the image when the first brightness value is within a preset first brightness range ; In the case that the second brightness value is outside the preset second brightness range, adjust the brightness of the auxiliary light to adjust the second brightness value.

In the embodiment of the present application, the processor is further configured to adjust the brightness of the main fill light to adjust the first brightness value when the first brightness value is outside the first brightness range.

In this embodiment of the present application, the processor being configured to adjust the brightness of the main fill light to adjust the first brightness value includes that the processor is configured to: in the case that the first brightness value is less than the lower limit value of the first brightness range, The brightness of the main fill light is increased to increase the first brightness value; when the first brightness value is greater than the upper limit value of the first brightness range, the brightness of the main fill light is decreased to reduce the first brightness value.

In the embodiment of the present application, the processor is configured to obtain the first brightness value of the image according to the image, and is configured to: obtain a brightness histogram of the image; weight and sum the brightness values of each pixel in the brightness histogram to obtain the first brightness value of the image. a brightness value.

In the embodiment of the present application, the supplementary light device includes: a first secondary supplementary light, which is arranged on the left side of the image acquisition device; a second supplementary supplementary light, which is provided on the right side of the image acquisition device; the processor is configured to In the case where the second brightness value is not located in the second brightness range, adjusting the brightness of the secondary fill light to adjust the second brightness value includes that the processor is configured to: the second brightness value on the left side of the left edge area is located in the second brightness range If the brightness is outside the range of the second brightness, adjust the brightness of the first auxiliary light to adjust the second brightness value on the left; if the second brightness value on the right edge of the right edge area is outside the second brightness range, adjust the second brightness The brightness of the fill light to adjust the second brightness value on the right.

In this embodiment of the present application, the configuration of the processor to acquire the second brightness value of the edge region of the image includes that the processor is configured to: divide the image into a plurality of regions; extract a plurality of an edge region in the region; determining a second brightness value of the edge region; wherein the second brightness value is an average value of the brightness values of the edge region.

In the embodiment of the present application, it further includes: a first pulse width modulation device, which is electrically connected to the main supplementary light and used to adjust the brightness of the main supplementary light by controlling the duty ratio; a second pulse width modulation device, which is electrically connected to The first auxiliary light is used to adjust the brightness of the first auxiliary light by controlling the duty ratio; the third pulse width modulation device, which is electrically connected to the second auxiliary light, is used to adjust the first auxiliary light by controlling the duty cycle. The brightness of the second fill light.

In a third aspect of the present application, a dishwasher is provided, including the above-mentioned light supplement device for a dishwasher.

In a fourth aspect of the present application, a machine-readable storage medium is provided, and instructions are stored on the machine-readable storage medium, and when executed by a processor, the instructions are used to enable the processor to execute the above-mentioned method for a dishwasher. fill light method.

In a fifth aspect of the present application, a computer program product is provided, including a computer program, wherein the computer program, when executed by a processor, implements the above-mentioned light supplement method for a dishwasher.

Through the above technical solutions, the supplementary light method provided by the embodiments of the present application uses a secondary supplementary light to supplement light in the washing area of the dishwasher, thereby solving the existing problems in the design of using supplementary light to surround the image acquisition device in the prior art. For the problem that the edge area is dark, by acquiring the image of the cleaning area, first obtain the first brightness value of the image according to the image, and when the first brightness value is within the preset first brightness range, the brightness of the edge area is checked. Evaluation, that is, obtaining the second brightness value, and in the case that the second brightness value is outside the preset second brightness range, adjust the second brightness value through the brightness of the sub-fill light, so as to improve the brightness balance of the image, so that The information of image recognition is not missing, the accuracy of image recognition is improved, and the user experience is improved.

Other features and advantages of the embodiments of the present application will be described in detail in the detailed description section that follows.

Description of drawings

The accompanying drawings are used to provide further understanding of the embodiments of the present application, and constitute a part of the specification, and are used to explain the embodiments of the present application together with the following specific embodiments, but do not constitute limitations to the embodiments of the present application. In the attached image:

FIG. 1 schematically shows a schematic structural diagram of a dishwasher under conventional conditions;

FIG. 2 schematically shows a schematic structural diagram of a dishwasher light-filling device to which the light-filling method for dishwashers provided according to the first embodiment of the present application is applied;

FIG. 3 is a flow chart of a light supplement method for a dishwasher provided by the first embodiment of the present application;

FIG. 4 is a flowchart of step S12 in the light supplement method for a dishwasher provided by the first embodiment of the application;

FIG. 5 is a flowchart of step S15 in the light supplement method for a dishwasher provided by the first embodiment of the application;

FIG. 6 is a flowchart of step S13 in the light supplement method for a dishwasher provided by the first embodiment of the present application;

7 is a schematic diagram of an exemplary demonstration step S13 in the light supplement method for a dishwasher provided by the first embodiment of the present application;

FIG. 8 is a flowchart of a light supplement method for a dishwasher provided by the second embodiment of the present application;

FIG. 9 is a flowchart of step S23 in the light supplement method for a dishwasher provided by the second embodiment of the present application;

FIG. 10 is a flowchart of a light supplement method for a dishwasher provided by the second embodiment of the application;

FIG. 11 is another flowchart of step S24 in the light supplement method for a dishwasher provided by the second embodiment of the application;

12 is a further flow chart of step S24 in the light supplement method for a dishwasher provided by the second embodiment of the application;

FIG. 13 is a flowchart of step S26 in the light supplement method for a dishwasher provided by the second embodiment of the application;

FIG. 14 schematically shows a schematic structural diagram of a dishwasher light-filling device applied by a light-filling method for a dishwasher provided according to the third embodiment of the present application;

FIG. 15 is a flowchart of a light supplement method for a dishwasher provided by the third embodiment of the application;

FIG. 16 is a flowchart of step S35 in the light supplement method for a dishwasher provided by the third embodiment of the application;

FIG. 17 is a flowchart of step S38 in the light supplement method for a dishwasher provided by the third embodiment of the present application;

FIG. 18 is a flowchart of a light supplement method for a dishwasher provided by the fourth embodiment of the present application;

FIG. 19 is another flowchart of the light supplement method for a dishwasher provided by the fourth embodiment of the present application;

FIG. 20 is a further flow chart of the light supplement method for dishwashers provided by the fourth embodiment of the present application; and FIG. 21 is the light supplement method for dishwashers provided by the fourth embodiment of the present application. It is a schematic diagram for demonstrating step S494.

Description of reference numerals

1. Lighting device; 11. Image acquisition equipment;

12. Fill light; 121. Main fill light;

122. Auxiliary fill light; 13. Lighting.

Detailed ways

The specific implementations of the embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific implementation manners described herein are only used to illustrate and explain the embodiments of the present application, and are not used to limit the embodiments of the present application.

It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present application are only used to explain the relationship between various components under a certain posture (as shown in the accompanying drawings). The relative positional relationship, the movement situation, etc., if the specific posture changes, the directional indication also changes accordingly.

In addition, descriptions involving "first", "second", etc. in this application are only for descriptive purposes, and should not be construed as indicating or implying their relative importance or implicitly indicating the number of indicated technical features. Thus, a feature delimited with "first", "second" may expressly or implicitly include at least one of that feature. In addition, the meaning of "or" in the whole text includes three parallel schemes. Taking "A or B" as an example, it includes scheme A, scheme B, or scheme that A and B satisfy at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but must be based on the realization by those of ordinary skill in the art. When the combination of technical solutions is contradictory or cannot be realized, it should be considered that the combination of such technical solutions does not exist. , is not within the scope of protection claimed in this application.

The embodiments of the present application provide a solution for fill light and image recognition for a dishwasher, the solution includes multiple embodiments, respectively including image acquisition of the cleaning area in the dishwasher, image discrimination, and control of fill lights Various aspects such as supplementary light are performed, and various aspects in the embodiments of the present application are described in detail below.

The first embodiment of the present application provides a fill light method for a dishwasher, which can fill light in a washing area in the dishwasher to better capture images, and the method aims to solve the problem of existing dishwashers. When the fill light surrounding the image acquisition device is used for fill light, the structural characteristics of the fill light easily lead to the problem that the edge area is relatively dark. This problem will lead to the lack of some information in the collected images, and the final image recognition process will be inaccurate, which will not meet the user's expected experience.

Please refer to FIG. 1 , which schematically shows a schematic structural diagram of a dishwasher in a conventional situation. The dishwasher 100 includes an image capture device 11 and a fill light 12 . In the prior art, in order to take into account the cost, space and design complexity, the most common design solution in the dishwasher 100 is that the image capturing device 11 and the fill light 12 are formed into an integral annular assembly. In this way, the lead wires are convenient, and the number of openings in the inner wall of the dishwasher 100 can be reduced. As shown in FIG. 1 , the inner hole is the opening of the image acquisition device 11 , and the outer ring is the fill light 12 . However, this design also has disadvantages, because its size cannot be designed as large as the rectangular fill light. Compared with the inner cavity (cleaning area) of the dishwasher 100, the proportion of the fill light 12 is very small. The light lamp 12 is equivalent to a point light source. Because the light has an incident angle (field of view) relative to the object rather than a parallel light, but the image capture device 11 captures the overall image of the cleaning area, this way of filling light will make the captured image of the cleaning area filled with The central area covered by the light lamp 11 will be brighter than the peripheral area of the central area, that is, the central area is brighter than the peripheral area. If tableware is placed in the edge area, the image capturing device 11 may not be able to capture the image of the edge area well, which may result in partial information loss of the captured image.

Referring to FIG. 2 , FIG. 2 schematically shows a schematic structural diagram of a light supplementing device for a dishwasher to which the light supplementing method for a dishwasher provided according to the first embodiment of the present application is applied. The supplementary light device 1 of the dishwasher 100 may include:

The image acquisition device 11 is used to acquire the image of the cleaning area in the dishwasher 100;

The main fill light 121 is used to emit light to the cleaning area to fill the cleaning area of the dishwasher 100; The area corresponding to the central area (which can be called the central area) is filled with light;

At least one auxiliary supplementary light 122 is used for emitting light to the edge of the cleaning area to fill in the area (may be referred to as the edge area) in the cleaning area corresponding to the edge area of the image captured by the image acquisition device 11 . The edge regions may be peripheral regions of the central region.

In one example, the main fill light 121 may be disposed around the image capturing device 11 , and the auxiliary fill light 122 may be disposed on one side of the main fill light 121 .

A general inventive concept provided by the embodiments of the present application is to add a secondary supplementary light 122 around the main supplementary light 121 to brighten the darker edge areas of the cleaning area not covered by the main supplementary light 121 . In the embodiment of the present application, the number of auxiliary supplementary lights 122 may not be limited, and the more auxiliary supplementary lights 122 are, the more uniform the illumination will be. The secondary fill light 122 may face the same direction as the image capturing device 11 . In one example, the image acquisition device 11 may be on 4 sides of the lumen.

In an optional embodiment, the image capturing device 11 may include a visible light camera; the main fill light 121 and the auxiliary fill light 122 may be white lights. In order to satisfy the clarity at night, the image acquisition device 11 can be an infrared camera, and the main fill light 121 and the auxiliary fill light 122 can be infrared fill lights. Optionally, the applicable image acquisition device 11 described in this embodiment adopts a visible light camera, and the main fill light 121 and the auxiliary fill light 122 use white lights.

In one example, the supplementary light device 1 may include:

The first auxiliary light 122a is arranged on the left side of the image capturing device;

The second auxiliary light 122b is arranged on the right side of the image capturing device.

It can be understood that the edge area can be filled with light by the first auxiliary light 122a and the second auxiliary light 122b, wherein the first auxiliary light 122a and the second auxiliary light 122b can be relative to the image acquisition device 11. They are arranged at intervals to prevent excessive interference between the light of the first supplementary light 122a and the second supplementary light 122b and the light of the main supplementary light 121 .

Please refer to FIG. 3. FIG. 3 is a flowchart of a method for supplementing light for a dishwasher provided by the first embodiment of the present application; based on the structure of the dishwasher described in the above embodiments, Light methods can include:

Step S11: acquiring an image;

Step S12: obtaining the first brightness value of the image according to the image;

Step S13: in the case that the first brightness value is within the preset first brightness range, obtain the second brightness value of the edge region of the image according to the image;

Step S14: In the case that the second brightness value is outside the preset second brightness range, adjust the brightness of the secondary fill light to adjust the second brightness value.

Specifically, the image acquisition device is first initialized, and waits for a signal that triggers the acquisition of the image acquisition device to perform acquisition. After the image acquisition device acquires the image of the cleaning area after receiving the signal, the first brightness value of the image can be calculated according to the image. The brightness distribution of the image can be evaluated, and then the first brightness value of the image can be evaluated. When the first brightness value is within the preset first brightness range, the second brightness value and the second brightness range of the edge area can be evaluated according to the second brightness value of the edge area. It is determined that when the second brightness value is outside the preset second brightness range, the brightness of the auxiliary fill light is adjusted to adjust the second brightness value.

The first brightness range can be understood as the image in the first brightness range is neither overexposed nor overdark overall. The first brightness range can be set according to requirements. Assume that the first brightness threshold for over-darkness is d1, and the second brightness threshold for over-exposure is d2, that is, when the brightness of the image is less than the first brightness threshold d1, the image as a whole is too dark, and when the brightness is greater than the second brightness threshold d2, At this point the entire image is overexposed. At this time, the first luminance range is d1 to d2. When the first brightness value is within the preset first brightness range, it is only considered that the image as a whole is not overexposed or too dark at this time. The covered edge areas will still be locally too dark.

It can be understood that the cleaning area can be divided into an area that can be covered by the main fill light (eg, a central area) and an edge area that cannot be covered by the main fill light. The overall image of the area that can be covered by the main fill light can be judged, and when the first brightness value of the overall image satisfies the condition, the edge area in the image can be judged whether it is necessary to supplement the edge area. Light.

Please refer to FIG. 4 , which is a flowchart of step S12 in the light supplement method for a dishwasher provided by the first embodiment of the present application. Obtaining the first brightness value of the image according to the image in step S12 may include:

Step S121: obtaining a grayscale histogram of the image;

Step S122: Weighting and summing the luminance values of each pixel in the grayscale histogram to obtain a first luminance value.

Specifically, a grayscale histogram can be counted on the overall image, where the "grayscale histogram" reflects the relationship between the frequency of occurrence of each grayscale pixel in an image and the grayscale. Taking the gray level as the abscissa and the frequency as the ordinate, draw the relationship between the frequency and the gray level. Usually, the initial gray level of the gray histogram is set to 0, the x-axis of the histogram represents the gray value from 0 to 255, which can represent the brightness value, the y-axis of the histogram represents the number of pixels corresponding to the brightness value, and the gray level It is the level division of gray value, which indicates the degree of precision, such as level 8, level 16, level 32. In this embodiment, there may be 256 levels, so the grayscale value has an interval range of 0-255. It can be understood that setting the grayscale range represented by each interval of the histogram represents the number of intervals on the grayscale range of the image to be imaged, and can also be understood as the dimension of the one-dimensional array of the histogram.

After the histogram is obtained, step S122 is entered: weighted summation is performed on the luminance values of each pixel in the grayscale histogram to obtain a first luminance value. Weighted summation involves averaging methods that include weights; usually in a set of data, the number of times a piece of data occurs is called a weight. The specific method is as follows: according to each brightness value (gray value) in the histogram, different weights are given; then the weights are multiplied by the number of pixels falling in the area, and all the results are added to obtain the above The first brightness value of ; for example, a brightness value of 250 corresponds to a weight value of 1, and a brightness value of 100 corresponds to a weight value of 0.3. If an image only has 10 pixels at the luminance value of 250 and the luminance value of 100, the first luminance value is 10*1+0.3*10=13. If the first brightness range is 8 to 12, the image as a whole is overexposed at this time.

It should be noted that the first brightness value obtained in step S12 is only a brightness reference value for judging the overall image, and can be calculated in other ways. Two mean operations are performed to obtain the first luminance value, which all belong to the protection scope covered by the embodiments of the present application.

In some embodiments, if the image is small and it is difficult to count the histogram, that is, in order to display the image to the greatest extent, the image can be transformed into an integer multiple of the image by imresize (imresize: zoom processing), so that the image can be easily displayed. identify.

Further, the supplementary light method further includes: Step S15 : adjusting the brightness of the main supplementary light to adjust the first brightness value when the first brightness value is outside the first brightness range.

If the first brightness value of the image is within the first brightness range, the first brightness value of the entire image can be calculated, and when the first brightness value is within the first brightness range, the edge region can be discriminated. If the first brightness value is outside the first brightness range, the brightness of the main fill light may continue to be adjusted until the first brightness value falls within the first brightness range.

Please refer to FIG. 5 , which is a flowchart of step S15 in the light supplement method for a dishwasher provided by the first embodiment of the present application. In step 15, when the first brightness value is outside the first brightness range, adjusting the brightness of the main fill light to adjust the first brightness value includes:

Step S151: when the first brightness value is less than the lower limit value of the first brightness range, increase the brightness of the main fill light to increase the first brightness value;

Step S152: When the first brightness value is greater than the upper limit value of the first brightness range, reduce the brightness of the main fill light to reduce the first brightness value.

It can be understood that in steps S151 to S152, when the image is overexposed or too dark, the overall image is filled or reduced by adjusting the brightness of the main fill light. The adjustment method may be to adjust the brightness of the main fill light. Input voltage or adjust the duty cycle of the PWM signal used to control the main fill light.

Please refer to FIG. 6 and FIG. 7 , FIG. 6 is a flowchart of step S13 in the light supplement method for a dishwasher provided by the first embodiment of the present application; A schematic diagram of the exemplary demonstration step S13 in the method for supplementing light in a dishwasher. In step S13, obtaining the second brightness value of the edge region of the image according to the image includes:

Step S131: Divide the image into multiple regions;

Step S132: extracting edge regions in multiple regions according to the field of view of the main fill light;

Step S133: Determine the second brightness value of the edge area.

It can be understood that the image is divided into multiple areas through image segmentation, and the range that can be covered by the main fill light is determined according to the field of view of the main fill light (you can obtain the cleaning area after the main fill light is lit separately. image, so as to obtain the range that the main fill light can cover), and according to the area covered by the main fill light, it will be removed from the entire area (multiple areas), thereby extracting multiple edge areas. Then, the second luminance value of the edge area is counted.

Likewise, the second luminance value may be a weighted summation of the luminance values of each of the edge regions, and then an average value of the edge regions is calculated.

Then step S14 is performed: in the case that the second brightness value is outside the preset second brightness range, adjust the brightness of the auxiliary light to adjust the second brightness value.

Taking the first auxiliary fill light 122a and the second auxiliary fill light 122b as an example, the first auxiliary fill light 122a and the second auxiliary fill light 122b are respectively arranged on the left and right sides of the image acquisition device, and are respectively used for image acquisition. The left edge area and the right edge area of are filled with light. In the case where the second brightness value is outside the second brightness range, adjusting the brightness of the sub-fill light to adjust the second brightness value includes: at the left side of the left edge area where the second brightness value is outside the second brightness range In this case, adjust the brightness of the first auxiliary fill light 122a to adjust the second brightness value on the left side; when the second brightness value on the right side of the right edge area is outside the second brightness range, adjust the second auxiliary fill light The brightness of the lamp 122b is adjusted to the right second brightness value. Here, the left second brightness value may refer to the second brightness value of the left edge region, and the right second brightness value may refer to the second brightness value of the right edge region.

The adjustment method may include: if the second brightness value on the left is outside the second brightness range, in the case that the second brightness value on the left is less than the lower limit value of the second brightness range, adding a first auxiliary light When the brightness of 122a is greater than the lower limit of the second brightness range, the brightness of the first auxiliary light 122b is reduced. Likewise, the second auxiliary light 122b on the right can be adjusted according to the second brightness value and the second brightness range on the right, so as to keep the second brightness value of the edge area not too dark and not overexposed.

Further, in the embodiment of the present application, the main fill light and the auxiliary fill light are individually controlled by different pulse width modulation signals, and the brightness is controlled by controlling the duty ratio of the pulse width modulation signals.

It can be understood that the pulse width modulation signal is abbreviated as PWM signal, which modulates the bias of the transistor base or the gate of the MOS tube according to the change of the corresponding load, so as to realize the change of the conduction time of the transistor or MOS tube, so as to realize the switching regulated power supply. Changes in output. Duty cycle refers to the time ratio of high level in one cycle, for example, cycle T=64us, pulse width D=32us, then duty cycle=D/T=32/64=50%, pulse width The adjustment is the adjustment of the duty cycle. By controlling the main fill light and the auxiliary fill light separately, it can adjust multiple areas of the cleaning area.

An embodiment of the present application further provides a light supplementing device for a dishwasher, where the supplementary light device includes an image acquisition device, a main supplementary light lamp, at least one auxiliary supplementary light lamp, and a processor.

Wherein, the image acquisition device is used to acquire the image of the washing area of the dishwasher, the main supplementary light is arranged around the image acquisition device and used to supplement the image, and at least one auxiliary supplementary light is provided at least one of the main supplementary lights. One side, used to fill the edge area of the image. The processor is configured to execute all or part of the steps of the light supplement method of the above embodiments.

In one embodiment, optionally, the at least one auxiliary supplementary light includes: a first auxiliary supplementary light, which is arranged on the left side of the image acquisition device; and a second supplementary supplementary light, which is arranged on the right side of the image acquisition device.

In one embodiment, the supplementary light device further includes an independently set first pulse width modulation device, which is electrically connected to the main supplementary light and used to adjust the brightness of the main supplementary light by controlling the duty ratio; the second pulse width modulation The device is electrically connected to the first auxiliary supplementary light for adjusting the brightness of the first auxiliary supplementary light by controlling the duty cycle; the third pulse width modulation device is electrically connected to the second auxiliary supplementary light for controlling the The duty cycle adjusts the brightness of the second supplementary light. Through the independently set first pulse width modulation device, second pulse width modulation device, and third pulse width modulation device, the brightness of the main supplementary light, the first auxiliary supplementary light and the second supplementary supplementary light are respectively independent. control.

To sum up, the supplementary light method provided by the embodiment of the present application uses the auxiliary supplementary light to supplement the light in the washing area of the dishwasher, thereby solving the problem of the existing edge area in the design of using supplementary light to surround the image acquisition device in the prior art. For the problem of darkness, by obtaining the image of the cleaning area, first obtain the first brightness value of the image according to the image, and when the first brightness value is within the preset first brightness range, evaluate the brightness of the edge area, that is, obtain The second brightness value, when the second brightness value is outside the preset second brightness range, adjust the second brightness value through the brightness of the auxiliary light, thereby improving the brightness balance of the image, so that the information of image recognition can be improved. Not missing, improve the accuracy of image recognition, thereby improving the user experience.

The second embodiment of the present application provides a light supplement method for a dishwasher, which can supplement light in a washing area in the dishwasher faster and save energy. Due to cost considerations in existing dishwashers, the cameras of dishwashers generally use ordinary cameras without AI auto-focus and exposure adaptive algorithms. To achieve image recognition, image processing technology is usually used to fine-tune the image, such as image brightness balance adjustment, so that the brightness of the image is more balanced to prevent overexposure or too dark, but the processing technology used for the image is often prone to distortion, resulting in poor results. And it cannot adapt to all environments, especially the inner cavity of the dishwasher is a closed environment. For example, when the user places the dishwasher in an environment with poor light, it is difficult for the image processing to achieve the expected effect, which is not expected by the user. experience.

Therefore, in order to solve the above problems, the embodiments of the present application provide a method for supplementing light for a dishwasher, wherein the dishwasher includes a supplementary light for supplementing light in a washing area of the dishwasher. Please refer to FIG. 8 , which is a flowchart of a light supplement method for a dishwasher provided by the second embodiment of the present application. The fill light method may include:

Step S21: controlling the fill light to fill light with the initial brightness;

Step S22: acquiring an image of the cleaning area in the dishwasher;

Step S23: perform gray histogram statistics on the image to determine whether the image is too dark or overexposed;

Step S24: when the image is overexposed or too dark, control the fill light to adjust the initial brightness;

Step S25: in the case that the image is not overexposed or too dark, determine the current initial brightness as the target fill light brightness;

Step S26 : take the target fill light brightness as the next initial brightness default value.

Specifically, in step S21, firstly, the supplementary light is controlled to perform supplementary light with a default initial brightness, and when the supplementary light is the initial brightness, an image of the cleaning area in the dishwasher is acquired. In one example, the initial brightness may be the median value of the maximum brightness of the fill light, which may be a more appropriate value obtained through experiments based on the dishwasher being located in different environments, so as to adapt to most environments and increase the number of dishwashers. scope of application.

In step S22, the image acquisition device may acquire an image of the cleaning area, and the image acquisition device may be set in the same direction as the fill light to obtain a better fill light effect.

In step S23, the grayscale histogram statistics are performed on the image, wherein the "grayscale histogram" reflects the relationship between the frequency of occurrence of each grayscale pixel in an image and the grayscale. Taking the gray level as the abscissa and the frequency as the ordinate, draw the relationship between the frequency and the gray level. Usually, the starting gray level of the grayscale histogram is set to 0, the x-axis of the histogram represents the grayscale value from 0 to 255, which can represent the brightness value, the y-axis of the histogram represents the number of pixels corresponding to the brightness value, and the grayscale level It is the level division of gray value, which indicates the degree of precision, such as level 8, level 16, level 32. In this embodiment, there may be 256 levels, so the grayscale value has an interval range of 0-255. It can be understood that setting the grayscale range represented by each interval of the histogram indicates the number of intervals on the grayscale range of the image to be imaged, which can also be understood as the dimension of the one-dimensional array of the histogram.

Please refer to FIG. 9 , which is a flowchart of step S23 in the light supplement method for a dishwasher provided by the second embodiment of the present application. In step S23, performing histogram statistics on the image to determine whether the image is too dark or overexposed may include:

Step S231: Determine the ratio of the number of pixels whose gray value corresponds to the white area in the gray histogram to the average number of pixels;

Step S232: in the case that the ratio is smaller than the first ratio threshold, determine that the image is too dark;

Step S233: When the ratio is greater than the second ratio threshold, determine that the image is overexposed.

It can be understood that when the grayscale value corresponding to the horizontal axis coordinate in the grayscale histogram is 250±Δx (that is, the ordinate (number of pixels) corresponding to the white area in step S231 ) accounts for the average number of pixels (the total number of pixels divided by the grayscale value) When the ratio of ) is much larger than other gray values, it proves that the white area of the image accounts for a large proportion, and the image corresponds to overexposure. On the contrary, if the proportion of the ordinate (number of pixels) near the grayscale coordinate 250 is very low, and the number of pixels at the coordinate 50 (corresponding to the black area of the grayscale histogram) is relatively high, such an image is not bright enough, that is, the above image is too dark. When the ratio of the value of the vertical axis of the 250±Δx coordinate to the average number of pixels is not high, the proportion of the white area in the whole image is not high and the overall distribution of the image brightness is relatively balanced, it is considered that there is no overexposure or no too dark.

Using the above characteristics, in the embodiment of the present application, optionally the first ratio threshold is 1:3, and the second ratio threshold is 3:1, then the grayscale value corresponds to 250±Δx, that is, the number of pixels in the white area is The ratio of the average number of pixels is between 1:3 and 3:1. At this time, the image is not exposed and not too dark. If the ratio is greater than 3:1, the image is considered to be overexposed, and if it is less than 1:3, the image is considered bright. Too dark, that is, the above-mentioned steps S232 to S233.

Please refer to FIG. 10 . FIG. 10 is a flowchart of a light supplement method for a dishwasher provided by the second embodiment of the present application. In step S24, when the image is overexposed or too dark, controlling the fill light to adjust the initial brightness includes:

Step S241: when the image is overexposed, control the fill light to increase the initial brightness;

Step S242: When the image is too dark, control the fill light to reduce the initial brightness.

Further, the brightness of the fill light can be adjusted by adjusting the duty cycle of the pulse width modulation signal used to control the fill light. Pulse width modulation modulates the bias voltage of the controllable switch (for example, transistor base or MOS transistor gate) according to the change of the corresponding load, so as to realize the change of the conduction time of the transistor or MOS transistor, so as to realize the output of the switching regulated power supply. Change. Duty cycle refers to the time ratio of high level in one cycle, for example, cycle T=64us, pulse width D=32us, then duty cycle=D/T=32/64=50%. Pulse width adjustment is the adjustment of the duty cycle.

The method of controlling the fill light to increase or decrease the initial brightness may include: periodically increasing or decreasing the duty cycle of the pulse width modulation signal according to time, for example, it may increase or decrease the pulse width modulation signal at a rate of 10% every 1 second. duty cycle.

In some embodiments, the brightness can be changed by changing the voltage of the fill light.

Further, each time the brightness is changed, the image capture device is controlled to capture the image again, and the loop goes to step S23 until the image is not overexposed or too dark, and then goes to step S25.

It can be understood that if the initial brightness does not need to be adjusted and the image is not too dark or overexposed, then the process proceeds directly from step S23 to step S25.

Please refer to FIG. 11 . FIG. 11 is another flowchart of step S24 in the light supplement method for a dishwasher provided by the second embodiment of the present application. In one embodiment, controlling the fill light to adjust the initial brightness in step 24 includes:

Step S241': Divide the brightness of the fill light into multiple levels from zero to the maximum;

Step S242': Decrease or increase the brightness level sequentially from the level corresponding to the initial brightness.

Specifically, the brightness of the fill light can be divided into multiple levels from zero to the maximum brightness of the rated power, and the levels can be adjusted by controlling the duty cycle of the pulse width modulation signal, for example, the brightness from zero to the maximum brightness of the rated power can be divided into is 10 levels, the maximum brightness corresponds to the duty cycle of the pulse width modulation signal is 100%, the brightness is 0 corresponds to the duty cycle of the pulse width modulation signal is 0%, then the first level corresponds to the duty cycle of the pulse width modulation signal is 10%, and so on.

For example, the initial brightness may correspond to the fifth level, that is, the duty cycle corresponding to the PWM signal is 50%, and the level may be increased or decreased in turn according to whether the image is overexposed or too dark, such as increasing to the duty cycle corresponding to the PWM signal. The sixth level with a ratio of 60% can be adjusted in this way to speed up the adjustment of the brightness of the fill light, thereby speeding up the response of subsequent image recognition.

Please refer to FIG. 12 . FIG. 12 is a further flowchart of step S24 in the light supplement method for a dishwasher provided by the second embodiment of the present application. The fill light method can also include:

Step S243': after reducing or increasing the initial brightness each time, acquire the image of the cleaning area in the dishwasher again;

Step S244': Circularly perform grayscale histogram statistics on the image, and when the ratio is between the first proportional threshold and the second proportional threshold, determine the current initial brightness as the target fill light brightness.

That is, after each reduction or increase of the initial brightness, the image acquisition device is controlled to acquire the image again, and the process jumps to step S23 again until the image is not overexposed or too dark, at which time the currently adjusted initial brightness is used as the target fill light brightness.

Please refer to FIG. 13 , which is a flowchart of step S26 in the light supplement method for a dishwasher provided by the second embodiment of the present application. In step S26, the target fill light brightness is used as the next initial brightness default value including:

Step S261: record the target fill light brightness and the adjustment time corresponding to the target fill light brightness;

Step S262 : take the target fill light brightness as the default initial brightness value corresponding to the next adjustment time.

It can be understood that this step mainly considers that when users use the dishwasher, they usually place the dishwasher in a fixed position. In most cases, the lighting environment of the same position is the same. Based on this feature, By recording the target brightness value and the adjustment time corresponding to the target fill light brightness, such as 100cd/ ^m2 and 12:00, 150cd/ ^m2 and 9:00, the next time the dishwasher is used, if the user uses the washing machine at 9:00 In the bowl machine, the default value of the initial brightness of the fill light is the target fill light brightness corresponding to the last time, that is, 150cd/m ² . At this time, according to steps S21 to S23, if the fill light is the initial brightness The images captured under the default value are not overexposed or too dark, so there is no need to adjust, thereby reducing the time to obtain a suitable image, and the fill light does not need to be adjusted multiple times, which can save energy and be more intelligent.

To sum up, the fill light method provided by the embodiments of the present application controls the fill light to fill light with the initial brightness and acquires an image of the cleaning area, and adjusts the output brightness of the fill light to a certain level by making statistics on the grayscale histogram of the image. Determine the appropriate target fill light brightness, and finally achieve that the image is not overexposed and not too dark. In addition, by determining the target fill light brightness as the next initial brightness default value, the number of times the dishwasher adjusts the brightness of the fill light can be reduced, thereby reducing the time to obtain a suitable image, saving energy consumption, and speeding up the response of image recognition.

The third embodiment of the present application also provides a light supplement method for a dishwasher, which can perform more energy-efficient and fast supplement light for the cleaning area in the dishwasher. Existing dishwashers generally include lighting lamps, and when a user opens the door of the dishwasher, the lighting lamps are automatically turned on to facilitate the user to place tableware. Some dishwashers are also equipped with a fill light, but the fill light and the lighting only realize the switch function, and the brightness cannot be adjusted linearly. Therefore, the brightness provided by the lighting lamp and the fill light is a fixed brightness, and cannot be adjusted intelligently and adaptively according to the actual brightness of the washing area inside the dishwasher. Therefore, whether it is day or night, its brightness is the same, and the lack of intelligence leads to poor user use.

Please refer to FIG. 14 . FIG. 14 exemplarily shows a schematic structural diagram of a light-filling device for a dishwasher to which the light-filling method for a dishwasher provided according to the third embodiment of the present application is applied. The light-filling device may include: :

The fill light 12 is used to emit light to the cleaning area to fill the image collected by the image acquisition device 11;

The lighting lamp 13 is used for emitting light to the cleaning area to achieve lighting effect.

The processor (not shown) is electrically connected to the fill light 12 and the lighting lamp 13 for controlling the fill light 12 and the lighting lamp 13 to emit light.

In one example, the light 13 and the fill light 12 may be located on the same side of the interior space of the dishwasher. In another example, the illumination light 13 and the supplementary light 12 may be located on different sides to provide illumination from multiple directions, so as to facilitate the image capturing device 11 to obtain a more complete and clearer image.

In one example, the fill light 12 can be in the shape of a ring, and is arranged around the image capture device 11 to facilitate lead wires, and the number of openings in the inner wall of the dishwasher can also be reduced, thereby increasing the washing area of the dishwasher Space.

Please refer to FIG. 15 . FIG. 15 is a flowchart of a light supplement method for a dishwasher provided by a third embodiment of the present application. In the embodiment of the present application, the dishwasher includes a fill light and an illuminating lamp for fill light in the cleaning area, the dishwasher further includes a cabinet door, and the fill light method includes:

Step S31: determine the opening and closing state of the cabinet door;

Step S32 : when the open and closed state is determined to be that the cabinet door is opened, the lighting lamp is controlled to be turned on, and the supplementary light is controlled to be turned off.

Step S33: acquiring the first image of the cleaning area;

Step S34: obtaining the first brightness value of the first image according to the first image;

Step S35: determining the fill light brightness required by the fill light according to the first brightness value;

Step S36: controlling the fill light to fill the cleaning area with the required fill light brightness;

Step S37: acquiring a second image of the cleaning area after the supplementary light;

Step S38: determining a second brightness value according to the second image;

Step S39 : when the second brightness value is outside the preset brightness value range, control the fill light to perform secondary adjustment on the fill light brightness.

Specifically, in steps S31 to S32, the opening and closing state of the cabinet door may be detected by arranging a limiter or a displacement sensor at the cabinet door. The opening and closing status of the cabinet door detected by the limiter or displacement sensor can be read. If the cabinet door is opened, it can be considered that the user places tableware in the washing area. At this time, the supplementary light can be controlled to keep off, and the lighting lamp can be controlled to be turned on, so as to illuminate the cleaning area and facilitate the user to place the tableware.

In step S33, a first image of the cleaning area is acquired under the condition that the fill light is kept off. For example, the first image may be acquired by an image acquisition device (eg, a camera). In step S34, the first luminance value of the first image may be obtained according to the first image. For example, the first luminance value may be an average luminance of pixels in the first image. In step S35, the fill light brightness required by the fill light lamp may be determined according to the first brightness value. Specifically, for example, the first brightness value may be the brightness value of the image captured under the condition that the supplementary light is not turned on and only relies on the light of the illuminating lamp for illumination. The target brightness value can be preset. The target brightness value may be the brightness value required to provide ideal illumination. The target brightness value can be set according to actual applications or user preferences. Through the difference between the first brightness value and the target brightness value, the fill light brightness required by the fill light lamp can be determined.

Please refer to FIG. 16 . FIG. 16 is a flowchart of step S35 in the light supplement method for a dishwasher provided by the third embodiment of the present application. In step S35, determining the fill light brightness required by the fill light according to the first brightness value includes:

Step S331: Divide the fill light brightness of the fill light into multiple levels from zero to the maximum;

Step S332: Determine the difference between the first brightness value and the preset target brightness value;

Step S333: Determine the brightness level of the supplementary light required by the supplementary light according to the difference.

Specifically, the brightness of the fill light can be divided into multiple levels from zero to the maximum brightness of the rated power, and the levels can be adjusted by controlling the duty cycle of the pulse width modulation signal provided to the fill light. For example, the maximum brightness from zero to rated power can be divided into 10 levels, the maximum brightness corresponds to the duty cycle of the pulse width modulation signal is 100%, the brightness is 0 corresponds to the duty cycle of the pulse width modulation signal is 0%, Then, the duty cycle of the pulse width modulation signal corresponding to the first level may be 10%, and so on.

For example, the target luminance value may correspond to the fifth level, that is, the duty cycle corresponding to the pulse width modulation signal is 50%. According to the level difference between the level of the current first brightness value and the level of the target brightness value, the level of the fill light brightness required by the fill light can be determined. For example, the level corresponding to the first brightness value is the first level, at this time If the difference from the target brightness value is four levels, the required level of fill light brightness can be four levels. By adjusting in this way, the fill light can be regulated by the influence of the lighting light, so as to speed up the adjustment response of the fill light and save the energy consumption of the fill light.

From step S36 to step S39, control the fill light to turn on and fill the cleaning area with the required fill light brightness. A second image of the cleaned area after supplemented light may be acquired, and a second brightness value may be determined according to the second image. For example, the second brightness value may be an average brightness value of pixels in the second image. Then, it can be determined whether the second brightness value is within the preset brightness value range, and when the second brightness value is outside the brightness value range, the supplementary light is controlled to perform secondary adjustment of the supplementary light brightness.

Specifically, after controlling the fill light to perform fill light with the required fill light brightness, the image acquisition device can be controlled again to obtain the second image, and whether the fill light brightness needs to be determined by judging whether the second brightness value is within the range of brightness values Secondary adjustment. Here, the brightness value range may be a brightness value within which the image acquired by the image acquisition device will not be overexposed (overexposed) or too dark. For example, an upper luminance value of a range of luminance values may be associated with overexposure, and a lower luminance value may be associated with overdark. If the second brightness value is outside the brightness value range, that is, it is considered that the acquired second image is overexposed or too dark, it is necessary to control the fill light to perform a secondary adjustment of the fill light brightness.

Please refer to FIG. 17 . FIG. 17 is a flowchart of step S38 in the light supplement method for a dishwasher provided by the third embodiment of the present application. In a specific embodiment, the range of brightness values in step S38 includes a lower limit value of brightness and an upper limit value of brightness, and when the second brightness value is outside the preset range of brightness values, the fill light is controlled to adjust the brightness of the fill light. Making secondary adjustments can include:

Step S381: when the second brightness value is greater than the upper limit value of brightness, reduce the brightness of the supplementary light;

Step S382: when the second brightness value is less than the lower limit value of brightness, increase the brightness of the supplementary light.

It can be understood that by adjusting the brightness of the supplementary light twice, the overall image is supplemented or reduced, and the adjustment method may include adjusting the input voltage of the supplementary light. The input voltage can be adjusted, for example, by adjusting the duty cycle of the pulse width modulated signal. The upper luminance value may be a critical value for determining whether the second image is overexposed, and the lower luminance value may be a critical value for determining whether the second image is too dark.

Through the above strategy of dividing the fill light brightness of the fill light into multiple levels from zero to the maximum, reducing the fill light brightness includes sequentially decreasing the fill light brightness levels, and increasing the fill light brightness includes sequentially increasing the fill light brightness levels.

For example, assuming that the current corresponding fill light brightness is the fourth level, at this time, if the second brightness value is greater than the upper limit value of the brightness, the level of fill light brightness is decreased in turn. For example, the fill light brightness is adjusted to the third level, and the first For the second image, if the second brightness value is still greater than the upper limit of brightness, continue to reduce the brightness of the fill light, and adjust the brightness of the fill light to the second level until the second brightness value is within the range of brightness values. At this time, the current fill light brightness can be determined. Fill light brightness for the target.

Wherein, when the open and closed state is determined to be that the cabinet door is opened, the supplementary light is controlled to be turned off after a preset first time has elapsed after it is turned on.

Further, after finding the target fill light brightness through step S38, wait for the door closing information, and after a preset delay time, turn off the lighting.

Further, after receiving the door closing information, turn off the fill light, and save the target fill light brightness output by the fill light this time as a default value for the next time.

To sum up, the fill light method provided by the embodiment of the present application, on the basis of turning on the lighting lamp to facilitate the user to place tableware, adjusts the fill light brightness of the fill light according to the line of the lighting light, so as to perform the lighting according to the actual brightness of the cleaning area inside the dishwasher. Intelligent adaptive adjustment. When the user opens the door, the lighting is automatically turned on, which is convenient for the user to place tableware. At the same time, the brightness of the fill light is adjusted according to the brightness of the lighting, which is more intelligent and user-friendly, and can bring users a better experience.

The fourth embodiment of the present application provides a method for supplementing light for a dishwasher, which can control the brightness of the supplementary light in the dishwasher. In the prior art, when the fill light is used for fill light, with the time change of the dishwasher, the lamp beads of the fill light will age, resulting in a weakening of its brightness, so that the image acquired during the image collection will appear too much. dark. When performing image recognition, it is easy to cause the image to be too dark, and the user feels that the brightness is not enough, which affects the experience of the product. The supplementary light method can solve the above problems.

Please refer to FIG. 18 . FIG. 18 is a flowchart of a light supplement method for a dishwasher provided in Embodiment 4 of the present application; in this embodiment of the present application, the light supplement method may include:

Step S41: when the dishwasher is in the factory state, control the fill light to fill the washing area of the dishwasher with a first brightness corresponding to a preset first duty ratio;

Step S42: acquiring the first image of the cleaning area;

Step S43: obtaining a first brightness value of the first image according to the first image;

Step S44: when the dishwasher is in the calibration state, control the fill light to fill the washing area of the dishwasher with the second brightness corresponding to the first duty cycle;

Step S45: acquiring a second image of the cleaning area;

Step S46: obtaining a second brightness value of the second image according to the second image;

Step S47: Determine the difference between the second brightness value and the first brightness value;

Step S48 : when the difference is greater than a preset threshold, increase the duty cycle to increase the brightness of the fill light.

Specifically, a pulse width modulation (PWM) signal may be used to control the fill light. The brightness of the fill light can be controlled by adjusting the duty cycle of the PWM signal.

It can be understood that the PWM signal can modulate the bias of the transistor base or the gate of the MOS transistor according to the change of the corresponding load, so as to realize the change of the conduction time of the transistor or the MOS transistor, thereby realizing the change of the output of the switching regulated power supply. The duty cycle refers to the ratio of the time the high level occupies within a cycle. For example, period T=64us, pulse width D=32us, then duty ratio=D/T=32/64=50%. Brightness control can be achieved by adjusting the duty cycle of the pulse width modulation signal used to control the fill light.

Specifically, when the dishwasher is in the factory state, that is, when the dishwasher is just starting to leave the factory, a better brightness of the fill light can be set first, and the brightness can correspond to the duty cycle of the PWM signal (which can be referred to as set the duty cycle or the first duty cycle described above). When the dishwasher is shipped from the factory, the duty cycle of the PWM signal used to control the fill light can be adjusted to the first duty cycle, so that the fill light can wash dishes at the first brightness corresponding to the first duty cycle. Fill light in the cleaning area of the machine. Then, a first image of the cleaning area under the first brightness can be captured by an image acquisition device (eg, a camera), a first brightness value of the first image can be obtained according to the first image, and the above-mentioned data can be saved, for example, referring to the first brightness value , the first duty cycle.

When the dimming calibration of the fill light is required, that is, when the dishwasher is in the calibration state, the fill light can be controlled to be turned on with the same first duty cycle pulse width modulation signal, and the image acquisition device can be started to The cleaning area is photographed and collected to obtain a second image, and a second brightness value of the second image can be obtained according to the second image. The second brightness value is then compared with the first brightness value from the factory. If the difference between the first brightness and the second brightness exceeds a certain threshold, the brightness of the fill light can be adjusted so that the second brightness value reaches the first brightness value.

The fill light can be controlled to enter the calibration state at a preset first time period and/or when there is no utensils in the washing area. For example, the first time period may be, for example, half a year, a year, that is, calibration may be performed every half year or year. It can also enter the calibration state according to the user's own trigger, so as to maintain the fill light.

It can be understood that by calibrating the fill light, the brightness difference of the fill light under the same duty cycle of the PWM signal can be obtained, and the fill light can be adaptively adjusted according to the difference, thereby preventing the fill light from being caused by The influence of the service life leads to the weakening of its brightness, which affects the subsequent image recognition effect and lighting effect, and brings a better experience to the user.

In this embodiment of the present application, obtaining the first brightness value of the first image according to the first image and obtaining the second brightness value of the second image according to the second image can both be weighted and summed or averaged through a statistical grayscale histogram. Brightness value.

It can be understood that the first luminance value is obtained by weighting and summing the luminance values of each pixel in the grayscale histogram. Weighted summation is an averaging method that takes weights into account; usually in a set of data, the number of times a piece of data occurs is called a weight. The specific method is as follows: according to each brightness value (gray value) in the histogram, different weights are given; then the weights are multiplied by the number of pixels falling in the area, and all the results are added to obtain the above For example: the brightness value of 250 corresponds to the weight value of 1, and the brightness value of 100 corresponds to the weight value of 0.3. If an image only has 10 pixels at the brightness value of 250 and the brightness value of 100, the first brightness value The luminance value is 10*1+0.3*10=13.

If the second brightness value is 10 under the same duty cycle of the PWM signal, it proves that the brightness of the fill light has decayed. At this time, the difference between the first brightness value and the second brightness value is 3. If the preset threshold is 2, and the difference is greater than the threshold at this time, the duty cycle of the pulse width modulation signal can be increased to maximize the brightness of the fill light.

The manner of increasing the duty cycle may include increasing the duty cycle by a certain percentage at a preset time. For example, every t seconds, the duty cycle of the PWM signal is increased at a rate of 5%, thereby increasing or decreasing the brightness of the fill light. After each adjustment, the image acquisition device can be controlled to acquire an image again, and the second brightness value of the image can be calculated until the difference between the second brightness value and the first brightness value is smaller than the threshold.

Further, the supplementary light method for a dishwasher provided by the embodiments of the present application may further include:

Step S49: In the case that the difference value is smaller than the preset threshold value, determine the second duty ratio currently corresponding to the fill light.

It can be understood that if the duty cycle of the PWM signal used to control the fill light is adjusted until the difference between the second brightness value and the first brightness value is less than the threshold, the second duty cycle does not need to be adjusted, and can be Determine the adjusted second duty cycle.

Please refer to FIG. 19 . FIG. 19 is another flowchart of the light supplement method for a dishwasher provided in Embodiment 4 of the present application. According to the determined second duty cycle, the light supplement method may further include the following steps:

Step S491: determine the ratio of the second duty cycle to the first duty cycle;

Step S492: Adjust the duty cycle of the fill light and the coefficient of brightness according to the ratio.

It can be understood that, according to the ratio of the second duty cycle to the first duty cycle, if the first duty cycle is 50% and the second duty cycle is 60%, it represents the same brightness. Due to the attenuation of the fill light , brightness that previously only required a 40% duty cycle now requires a 50% duty cycle, a 60/50 ratio of 1.2.

In step S492, under normal circumstances, the brightness of the fill light=duty ratio*k, where k is a correlation coefficient, according to which the duty cycle of the fill light and the coefficient k of the brightness can be adjusted, for example, the coefficient k is increased to The original 1.2 times, so that the fill light works normally under the same duty cycle.

Please refer to FIG. 20 and FIG. 21 , FIG. 20 is a further flowchart of the light supplement method for a dishwasher provided by the fourth embodiment of the present application; The method for supplementing light for a dishwasher is a schematic diagram illustrating step S494. The supplementary light method provided in the embodiment of the present application also includes:

Step S493: Determine the difference between the second duty cycle and the first duty cycle;

Step S494: Determine the service life of the fill light according to the difference.

Specifically, after obtaining the second duty cycle P1 of the pulse width modulation signal of the fill light in the calibration state and the pulse width modulation signal P0 in the factory state, the remaining service life of the fill light can be calculated by the following formula: Proportion:

T=100-((|P1-P0|*100)/(100-P0)),

where T is the percentage of the remaining service life of the fill light.

Further, according to the service life obtained above, in the case that the service life is less than the preset service life threshold, indication information can be sent to the user. Indication information can be sent through indicator lights or other early warning devices, such as buzzers. The instruction information can be displayed on the display screen to prompt the user to replace the fill light, or the instruction information can be sent to the user terminal through the wireless network to prompt the user to replace the fill light. In this way, the dishwasher can be maintained and the reliability of the dishwasher can be guaranteed.

The fill light method provided by the embodiment of the present application controls the fill light of the dishwasher to fill light in the washing area of the dishwasher with the first brightness corresponding to the preset first duty cycle in the factory state of the dishwasher, And carry out image acquisition to obtain the first brightness value. When dimming calibration needs to be performed, the fill light is controlled to fill light with the same duty cycle of the pulse width modulation signal, and image acquisition is performed to obtain the second brightness value. If the difference between the first brightness and the second brightness exceeds a certain threshold, the brightness of the fill light is adjusted until the first brightness value is reached. By calibrating the fill light in this way, the brightness difference of the fill light under the same duty cycle of the PWM signal can be obtained, and the fill light can be adaptively adjusted according to the difference, so as to prevent the fill light due to The influence of the service life will lead to the weakening of its brightness, which will affect the subsequent image recognition effect and lighting effect, and bring a better experience to the user.

A fifth embodiment of the present application provides a dishwasher, including the light supplementing device described in the foregoing embodiments.

Those skilled in the art should also understand that, as long as the physical principles and the inventive concept are not violated, various combinations, deformations or substitutions of the embodiments of the present application can be carried out, and these combinations, deformations or substitutions also fall within the protection scope of the present application. .

Embodiments of the present application provide a machine-readable storage medium, on which a program is stored, and when the program is executed by a processor, implements a light supplement method for a dishwasher.

Examples of machine-readable storage media may include memory. The memory may include non-persistent memory in a computer readable medium, in the form of random access memory (RAM) or non-volatile memory, such as read only memory (ROM) or flash memory (flash RAM), the memory including at least one memory chip .

Embodiments of the present application provide a processor for running a program, wherein, when the program is executed, the processor is configured to execute the light supplement method for a dishwasher described in the foregoing embodiments.

Embodiments of the present application further provide a computer program product, including a computer program, when the computer program is executed by a processor, the method for a dishwasher of the foregoing embodiments is implemented.

In one embodiment, a method for supplementing light for a dishwasher, the dishwasher includes an image acquisition device for acquiring an image of a washing area in the dishwasher; a main supplementary light for supplementing the image. light; at least one auxiliary fill light, used to fill the edge area of the image; the fill light method includes:

Obtain an image of the wash area within the dishwasher;

obtaining the first brightness value of the image according to the image;

In the case that the first brightness value is within the preset first brightness range, obtain the second brightness value of the edge region of the image according to the image;

When the second brightness value is outside the preset second brightness range, the brightness of the auxiliary fill light is adjusted to adjust the second brightness value.

In one embodiment, the supplementary light method further includes:

When the first brightness value is outside the first brightness range, the brightness of the main fill light is adjusted to adjust the first brightness value.

In one embodiment, when the first brightness value is outside the first brightness range, adjusting the brightness of the main fill light to adjust the first brightness value includes:

In the case that the first brightness value is less than the lower limit value of the first brightness range, increase the brightness of the main fill light to increase the first brightness value;

When the first brightness value is greater than the upper limit value of the first brightness range, the brightness of the main fill light is reduced to reduce the first brightness value.

In one embodiment, obtaining the first brightness value of the image according to the image includes:

Get the brightness histogram of the image;

The luminance values of each pixel in the luminance histogram are weighted and summed to obtain a first luminance value.

In one embodiment, the at least one auxiliary fill light includes a first auxiliary fill light and a second auxiliary fill light, and the first auxiliary fill light and the second auxiliary fill light are respectively disposed on the left and right sides of the image capturing device. , respectively used to fill the left edge area and right edge area of the image: when the second brightness value is outside the second brightness range, adjusting the brightness of the secondary fill light to adjust the second brightness value includes:

In the case where the second brightness value on the left side of the left edge area is outside the second brightness range, adjust the brightness of the first auxiliary light to adjust the second brightness value on the left side;

In the case where the second brightness value on the right side of the right edge area is outside the second brightness range, the brightness of the second auxiliary fill light is adjusted to adjust the second brightness value on the right side.

In one embodiment, obtaining the second brightness value of the edge region of the image according to the image includes:

Divide the image into multiple regions;

Extract the edge areas in multiple areas according to the field of view of the main fill light;

determining the second brightness value of the edge region;

The second brightness value is the average value of the brightness values of the edge regions.

In one embodiment, the main fill light and the auxiliary fill light are individually controlled through different pulse width modulation signals.

In one embodiment, a supplementary light device for a dishwasher, comprising:

Image acquisition equipment for acquiring images of the washing area of the dishwasher;

The main fill light, which is set around the image acquisition device, is used to fill light in the area corresponding to the central area of the image in the cleaning area;

At least one auxiliary supplementary light, which is arranged on at least one side of the main supplementary light, is used for supplementing light in the area corresponding to the edge area of the image in the cleaning area;

The processor, configured as:

get image;

obtaining the first brightness value of the image according to the image;

In an embodiment, the processor is further configured to:

In one embodiment, the processor being configured to adjust the brightness of the main fill light to adjust the first brightness value includes the processor being configured to:

In one embodiment, the processor is configured to obtain the first luminance value of the image from the image and is configured to:

Get the brightness histogram of the image;

In one embodiment, the at least one auxiliary fill light includes:

The first pair of fill light is set on the left side of the image acquisition device;

The second supplementary light is set on the right side of the image acquisition device;

The processor is configured to adjust the brightness of the secondary fill light to adjust the second brightness value when the second brightness value is not located in the second brightness range. The processor is configured to:

In an embodiment, the processor being configured to obtain the second luminance value of the edge region of the image comprises the processor being configured to:

Divide the image into multiple regions;

determining the second brightness value of the edge region;

In one embodiment, the supplementary light device further includes:

The first pulse width modulation device is electrically connected to the main fill light, and is used to adjust the brightness of the main fill light by controlling the duty ratio;

The second pulse width modulation device is electrically connected to the first auxiliary light and is used for adjusting the brightness of the first auxiliary light by controlling the duty ratio;

The third pulse width modulation device is electrically connected to the second supplementary light, and is used for adjusting the brightness of the second supplementary light by controlling the duty ratio.

In one embodiment, a dishwasher includes the above-mentioned light-filling device for a dishwasher.

In one embodiment, a machine-readable storage medium having instructions stored on the machine-readable storage medium for enabling the processor to execute the above-mentioned fill light for dishwashers when executed by the processor method.

In one embodiment, a computer program product includes a computer program that, when executed by a processor, implements the above-mentioned method for supplementing light for a dishwasher.

In one embodiment, a method for supplementing light for a dishwasher, the dishwasher includes a supplementary light for supplementing light in a washing area of the dishwasher, and the method for supplementing light includes:

Control the fill light to fill light with the initial brightness;

Get an image of the cleaned area;

Perform grayscale histogram statistics on the image to determine whether the image is too dark or overexposed;

When the image is overexposed or too dark, control the fill light to adjust the initial brightness;

When the image is not overexposed or too dark, determine the current initial brightness as the target fill light brightness;

Use the target fill light brightness as the next initial brightness default value.

In one embodiment, performing gray histogram statistics on the image to determine whether the image is too dark or overexposed includes:

Determine the ratio of the number of pixels in the histogram corresponding to the gray value of the white area to the average number of pixels;

In the case that the ratio is less than the first ratio threshold, it is determined that the image is too dark;

Where the ratio is greater than the second ratio threshold, it is determined that the image is overexposed.

In one embodiment, when the image is overexposed or too dark, controlling the fill light to adjust the initial brightness includes:

When the image is overexposed, control the fill light to increase the initial brightness;

When the image is too dark, control the fill light to reduce the initial brightness.

In one embodiment, controlling the fill light to adjust the initial brightness includes:

Divide the brightness of the fill light into multiple levels from zero to maximum;

Decrease or increase the brightness level sequentially from the level corresponding to the initial brightness.

In one embodiment, using the target fill light brightness as the next initial brightness default value includes:

Record the target fill light brightness and the adjustment time of the corresponding target fill light brightness;

Take the target fill light brightness as the default initial brightness value for the next adjustment time.

In one embodiment, the brightness of the fill light is adjusted by adjusting the duty cycle of the pulse width modulation signal.

In one embodiment, a supplementary light device for a dishwasher, comprising:

an image acquisition element configured to acquire images of the wash area of the dishwasher;

Fill light, used to fill the cleaning area;

The processor, configured as:

Control the fill light to fill light with the initial brightness;

Get an image of the cleaned area;

In one embodiment, the processor is configured to perform grayscale histogram statistics on the image to determine whether the image is too dark or overexposed, comprising the processor being configured to:

In one embodiment, the processor is configured to control the fill light to adjust the initial brightness when the image is overexposed or too dark. The processor is configured to:

In one embodiment, the processor being configured to control the fill light to adjust the initial brightness includes the processor being configured to:

In one embodiment, configuring the processor to use the target fill light brightness as the next initial brightness default value includes that the processor is configured to:

In one embodiment, the supplementary light device further includes:

The pulse width modulation signal adjustment device is used for adjusting the duty ratio of the pulse width modulation signal input to the fill light, so as to adjust the brightness of the fill light.

In one embodiment, a machine-readable storage medium having instructions stored on the machine-readable storage medium is used to enable the processor to perform the above-mentioned fill light for the fill light when executed by the processor. method.

In one embodiment, a computer program product includes a computer program that, when executed by a processor, implements the above-mentioned method for supplementing light for a supplementary light.

In one embodiment, a method for supplementing light for a dishwasher, the dishwasher includes: a lighting lamp for illuminating a cleaning area; a supplementary light for supplementing the cleaning area in the dishwasher. Light; fill light methods include:

Determine the opening and closing status of the cabinet door;

When it is determined that the cabinet door is opened according to the opening and closing state, the lighting lamp is controlled to be turned on, and the fill light is turned off;

obtain the first image of the cleaning area;

obtaining a first brightness value of the first image according to the first image;

Determine the fill light brightness required by the fill light according to the first brightness value;

Control the fill light to fill the cleaning area with fill light brightness;

acquiring a second image of the cleaned area after supplemental light;

determining a second brightness value according to the second image;

When the second brightness value is outside the preset brightness value range, the fill light is controlled to adjust the fill light brightness twice.

In one embodiment, the supplementary light method further includes:

The first brightness value is an average brightness value of pixels in the first image, and the second brightness value is an average brightness value of pixels in the second image.

In one embodiment, determining the fill light brightness required by the fill light according to the first brightness value includes:

Divide fill light brightness into multiple levels from zero to maximum;

determining the difference between the first brightness value and the preset target brightness threshold;

Determine the level of fill light brightness required by the fill light according to the difference.

In one embodiment, the brightness value range includes an intensity lower limit value and an intensity upper limit value, and when the second brightness value is outside the preset brightness value range, the fill light is controlled to perform secondary adjustment on the fill light brightness. include:

When the second brightness value is greater than the upper limit value of the intensity, reduce the brightness of the fill light;

When the second brightness value is less than the lower limit value of the intensity, the brightness of the fill light is increased.

In one embodiment, reducing the brightness of the supplementary light includes: sequentially decreasing the level of the brightness of the supplementary light; increasing the brightness of the supplementary light includes: sequentially increasing the level of the brightness of the supplementary light.

In one embodiment, a supplementary light device for a dishwasher, comprising:

The displacement sensor is used to obtain the opening and closing status of the cabinet door according to the displacement of the cabinet door;

an image capture device for capturing images of the washing area within the dishwasher;

Fill light, used to fill the cleaning area;

Illuminators for illuminating the wash area;

The processor, configured as:

Determine the opening and closing status of the cabinet door;

obtain the first image of the cleaning area;

Control the fill light to fill the cleaning area with fill light brightness;

acquiring a second image of the cleaned area after supplemental light;

determining a second brightness value according to the second image;

In the case that the second brightness value is outside the preset brightness value range, the supplementary light is controlled to perform a secondary adjustment of the supplementary light brightness.

In one embodiment, the first brightness value is an average brightness value of pixels in the first image, and the second brightness value is an average brightness value of pixels in the second image.

In one embodiment, the processor being configured to determine the fill light brightness required by the fill light according to the first brightness value includes the processor being configured to:

Divide fill light brightness into multiple levels from zero to maximum;

Determine the level of fill light brightness according to the difference.

In one embodiment, the brightness value range includes an intensity lower limit value and an intensity upper limit value, and the processor is configured to control the fill light to fill light when the second brightness value is outside the preset brightness value range. The secondary adjustment of brightness includes including the processor being configured to:

In one embodiment, the processor being configured to reduce the fill light brightness includes the processor being configured to: sequentially reduce the fill light brightness levels;

The processor being configured to increase the brightness of the fill light includes the processor being configured to: sequentially increase the level of the brightness of the fill light.

In one embodiment, a method for supplementing light for a dishwasher, the brightness of the supplementary light is adjusted by adjusting the duty cycle of a pulse width modulation signal, and the supplementary light method includes:

When the dishwasher is in the factory state, the fill light is controlled to fill the washing area of the dishwasher with the first brightness corresponding to the preset first duty ratio;

obtain the first image of the cleaning area;

When the dishwasher is in the calibration state, controlling the fill light to fill the washing area of the dishwasher with the second brightness corresponding to the first duty cycle;

obtaining a second image of the cleaned area;

obtaining a second brightness value of the second image according to the second image;

determining the difference between the second brightness value and the first brightness value;

When the difference value is greater than the preset threshold, the first duty cycle is increased to increase the second brightness.

In one embodiment, the method for supplementing light further includes:

In the case that the difference value is smaller than the preset threshold value, the second duty ratio corresponding to the current second brightness is determined.

In one embodiment, the supplementary light method further includes:

determining the ratio of the second duty cycle to the first duty cycle;

Adjust the duty cycle of the fill light and the coefficient of brightness according to the ratio.

In one embodiment, the supplementary light method further includes:

determining the difference between the second duty cycle and the first duty cycle;

Determine the service life of the fill light according to the difference.

In an embodiment, the method for supplementing light further includes: in the case that the service life is less than a preset service life threshold, sending indication information to the user.

In an embodiment, the method for supplementing light further includes: controlling the supplementary light to enter a calibration state within a preset first time period and/or when there is no tableware in the washing area.

In one embodiment, a supplementary light device for a dishwasher, comprising:

an image acquisition element configured to acquire images of the wash area within the dishwasher;

A pulse width modulation signal conditioning device for controlling the duty cycle of the pulse width modulation signal input to the fill light;

The processor, configured as:

obtain the first image of the cleaning area;

obtaining a second image of the cleaned area;

When the difference is greater than the preset threshold, the first duty cycle is increased to adjust the second brightness.

In an embodiment, the processor is further configured to: determine a second duty cycle corresponding to the current second brightness when the difference is less than a preset threshold.

In an embodiment, the processor is further configured to:

Determine the service life of the fill light according to the difference.

In one embodiment, the processor is further configured to: send indication information to the user when the service life is less than a preset lifespan threshold.

In one embodiment, the processor is further configured to: control the fill light to be in a calibration state for a preset first time period and/or when there is no tableware in the washing area.

As will be appreciated by those skilled in the art, the embodiments of the present application may be provided as a method, a system, or a computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.

It should also be noted that the terms "comprising", "comprising" or any other variation thereof are intended to encompass a non-exclusive inclusion such that a process, method, article or device comprising a series of elements includes not only those elements, but also Other elements not expressly listed, or which are inherent to such a process, method, article of manufacture, or apparatus are also included. Without further limitation, an element qualified by the phrase "comprising a..." does not preclude the presence of additional identical elements in the process, method, article of manufacture or apparatus that includes the element.

The above are merely examples of the present application, and are not intended to limit the present application. Various modifications and variations of this application are possible for those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall be included within the scope of the claims of this application.

Claims

A fill light method for a dishwasher, characterized in that the dishwasher includes an image acquisition device for collecting images of a cleaning area in the dishwasher; a main fill light for all The image is filled with light; at least one auxiliary fill light is used to fill the edge area of the image; the fill light method includes:

acquiring an image of a wash area within the dishwasher;

obtaining a first brightness value of the image according to the image;

In the case that the first brightness value is within a preset first brightness range, obtain a second brightness value of the edge region of the image according to the image;

In the case that the second brightness value is outside the preset second brightness range, the brightness of the auxiliary fill light is adjusted to adjust the second brightness value.
The supplementary light method of claim 1, further comprising:

When the first brightness value is outside the first brightness range, the brightness of the main fill light is adjusted to adjust the first brightness value.
The method of claim 2, wherein when the first brightness value is outside the first brightness range, adjusting the brightness of the main fill light to adjust the The first brightness value includes:

In the case that the first brightness value is less than the lower limit value of the first brightness range, increasing the brightness of the main fill light to increase the first brightness value;

When the first brightness value is greater than the upper limit value of the first brightness range, the brightness of the main fill light is reduced to reduce the first brightness value.
The method of claim 1, wherein the obtaining the first brightness value of the image according to the image comprises:

obtaining a brightness histogram of the image;

The luminance values of each pixel in the luminance histogram are weighted and summed to obtain the first luminance value.
The method for supplementary light according to claim 1, wherein the at least one auxiliary supplementary light comprises a first supplementary light and a second supplementary light, the first supplementary light and the second supplementary light Two pairs of fill lights are respectively arranged on the left and right sides of the image acquisition device, and are respectively used to fill the left and right edge regions of the image. In the case outside the two brightness ranges, adjusting the brightness of the secondary fill light to adjust the second brightness value includes:

When the second brightness value on the left side of the left edge area is outside the second brightness range, adjusting the brightness of the first auxiliary light to adjust the second brightness value on the left side;

In the case that the right second brightness value of the right edge region is outside the second brightness range, the brightness of the second auxiliary supplementary light is adjusted to adjust the right second brightness value.
The method for supplementing light according to claim 1, wherein the obtaining, according to the image, the second luminance value of the edge region of the image comprises:

dividing the image into a plurality of regions;

extracting edge regions in the plurality of regions according to the field of view of the main fill light;

determining a second luminance value of the edge region;

The second luminance value is an average value of luminance values of the edge region.
The supplementary light method according to claim 1, wherein the main supplementary light and the auxiliary supplementary light are individually controlled by different pulse width modulation signals.
A light supplementing device for a dishwasher, comprising:

Image acquisition equipment for acquiring images of the washing area of the dishwasher;

a main fill light, arranged around the image acquisition device, and used to fill light in the area corresponding to the central area of the image in the cleaning area;

at least one auxiliary supplementary light, arranged on at least one side of the main supplementary light, for performing supplementary light on the area corresponding to the edge area of the image in the cleaning area;

The processor, configured as:

obtain the image;

obtaining a first brightness value of the image according to the image;

In the case that the first brightness value is within a preset first brightness range, obtain a second brightness value of the edge region of the image according to the image;

In the case that the second brightness value is outside the preset second brightness range, the brightness of the auxiliary fill light is adjusted to adjust the second brightness value.
The light supplement device of claim 8, wherein the processor is further configured to:

When the first brightness value is outside the first brightness range, the brightness of the main fill light is adjusted to adjust the first brightness value.
The supplementary light device of claim 9, wherein the processor is configured to adjust the brightness of the main supplementary light to adjust the first brightness value comprising the processor being configured to:

In the case that the first brightness value is less than the lower limit value of the first brightness range, increasing the brightness of the main fill light to increase the first brightness value;

When the first brightness value is greater than the upper limit value of the first brightness range, the brightness of the main fill light is reduced to reduce the first brightness value.
The lighting device of claim 8, wherein the processor is configured to obtain the first brightness value of the image according to the image and is configured to:

obtaining a brightness histogram of the image;

The luminance values of each pixel in the luminance histogram are weighted and summed to obtain the first luminance value.
The supplementary light device according to claim 8, wherein the at least one auxiliary supplementary light comprises:

a first pair of supplementary lights, arranged on the left side of the image acquisition device;

a second pair of supplementary lights, arranged on the right side of the image acquisition device;

The processor being configured to adjust the brightness of the secondary fill light to adjust the second brightness value when the second brightness value is not located in the second brightness range includes the processor being configured to:

When the second brightness value on the left side of the left edge area is outside the second brightness range, adjusting the brightness of the first auxiliary light to adjust the second brightness value on the left side;

In the case that the right second brightness value of the right edge region is outside the second brightness range, the brightness of the second auxiliary supplementary light is adjusted to adjust the right second brightness value.
The light supplement device of claim 8, wherein the processor is configured to obtain the second luminance value of the edge region of the image comprising the processor being configured to:

dividing the image into a plurality of regions;

extracting edge regions in the plurality of regions according to the field of view of the main fill light;

determining a second luminance value of the edge region;

The second luminance value is an average value of luminance values of the edge region.
The supplementary light device of claim 12, further comprising:

a first pulse width modulation device, electrically connected to the main fill light, for adjusting the brightness of the main fill light by controlling a duty cycle;

The second pulse width modulation device is electrically connected to the first auxiliary light and is used for adjusting the brightness of the first auxiliary light by controlling the duty ratio;

The third pulse width modulation device is electrically connected to the second supplementary light and is used for adjusting the brightness of the second supplementary light by controlling the duty cycle.
A dishwasher, characterized in that it comprises the light supplementing device for a dishwasher according to any one of claims 8 to 14.
A machine-readable storage medium, characterized in that an instruction is stored on the machine-readable storage medium, and the instruction is used to enable the processor to execute any one of claims 1 to 7 when executed by a processor. The light supplement method for a dishwasher according to the claim.
A computer program product, comprising a computer program, characterized in that, when the computer program is executed by a processor, the light supplement method for a dishwasher according to any one of claims 1 to 7 is implemented.