Oral cleaning method, cleaning system, and oral cleaning device

Abstract

The present invention provides an oral cleaning method, a cleaning system, and an oral irrigator, and the oral cleaning method includes a step (101) of acquiring an oral image by an image acquisition device attached to the oral irrigator, and a step (102) of controlling the water outlet nozzle of the oral irrigator based on the blood area and / or blood concentration in the acquired oral image. By adjusting the cleaning power and the amount of cleaning water according to the bleeding condition of the tooth, it is possible to protect the bleeding area from secondary damage and thoroughly clean the teeth from foreign bodies.

Description

[Technical field]

[0001] The present invention relates to the field of oral care technology, and in particular to an oral cleaning method, a cleaning system and an oral irrigator. [Background technology]

[0002] Oral irrigators are personal care devices in the field of oral hygiene that use a pump to draw water from a water tank into a nozzle to form a jet of water to rinse the user's mouth and teeth. Compared to traditional toothbrushes, oral irrigators have the advantage of being able to remove plaque from teeth more thoroughly and are effective in reducing oral diseases such as gingivitis, periodontal disease, and gingival bleeding, and have become popular among consumers in recent years.

[0003] Oral irrigators currently on the market mainly use a mirror to observe foreign objects on teeth with the naked eye and manually control tooth cleaning. This creates a blind spot in the visual sense, and the teeth and foreign objects inside the oral cavity cannot be seen through the mirror, leaving a blind spot in the visual sense, leading to situations such as not being able to thoroughly rinse the teeth. In addition, the user must maintain a certain posture for a long time to operate the device, which causes fatigue in the neck, waist, and eyes. As the time goes by, the enjoyment of rinsing the teeth is lost, and the user will not want to rinse the teeth, which will ultimately affect oral health. In addition, even if the user has tooth bleeding, the amount of rinsing water and cleaning power cannot be actively reduced according to the amount of tooth bleeding, resulting in secondary damage at the bleeding point. Summary of the Invention [Problem to be solved by the invention]

[0004] The main object of the present invention is to overcome the shortcomings of conventional oral irrigators and provide an oral cleaning method, cleaning system and oral irrigator that can adjust the cleaning power and amount of cleaning water according to the bleeding condition of the teeth, protect the bleeding area from secondary damage, and thoroughly clean foreign matter from the teeth all over. [Means for solving the problem]

[0005] The present invention employs the following technical aspects. In one embodiment, the method of oral cleaning comprises: acquiring an image of the oral cavity by an image collecting device attached to the oral irrigator; A step of extracting a tooth region and a foreign object in the tooth region based on the acquired oral cavity image, and determining whether the foreign object is blood;

[0006] If the foreign matter is blood, calculating the blood area and / or blood concentration, and controlling the water discharge from a water discharge nozzle of the oral irrigator based on the blood area and / or blood concentration. If the foreign matter is not blood, the method includes a step of controlling the water output from the water output nozzle of the oral irrigator based on the attributes of the foreign matter.

[0007] Preferably, the blood area and / or blood concentration are calculated, the blood area and / or blood concentration are converted into a bleeding level, and the water output from the water output nozzle of the oral irrigator is controlled based on the bleeding level to determine the level of cleaning.

[0008] Preferably, the attributes of the foreign matter are calculated, the attributes of the foreign matter are converted into a foreign matter level, and the level of cleaning is determined by controlling the water output from a water output nozzle of the oral irrigator based on the foreign matter level. Preferably, the step of extracting the tooth region based on the acquired intraoral image includes: Obtaining the number of rows and columns of the oral cavity image using OpenCV;

[0009] Cycle through all pixel points in all rows and columns in four directions according to rows and columns, and if tooth color is found, stop the cycle and continue the next cycle, and record the coordinates of all cycled points until the cycle is completed; marking the regions of the recorded points as non-tooth regions and marking the regions of the remaining points of the image as tooth regions. Preferably, the step of extracting a tooth region based on the acquired oral cavity image and extracting a foreign object from the tooth region includes the steps of:

[0010] Extracting a tooth region based on the acquired oral cavity image, and performing a THRESH_BINAR type binarization process with a threshold value of 100 on the image of the tooth region using OpenCV, and marking the color values ​​of the image after the binarization process as 0 for white parts and 255 for others; and recording all areas with a color value of 255, marking them as foreign body areas and recording their corresponding coordinates.

[0011] Preferably, the steps of extracting a tooth region and a foreign body in the tooth region based on the acquired oral cavity image, determining whether the foreign body is blood, and calculating a blood area and / or a blood concentration if the foreign body is blood, include: traversing the coordinates of all pixel points in the oral cavity image, comparing them with the coordinates of the recorded foreign body area, and setting the corresponding pixel point to white if it is not a recorded point;

[0012] Convert the adjusted oral cavity image into HSV format using OpenCV, compare the HSV value of each pixel point with the corresponding blood HSV value, and determine that it is blood if it is within the range of the blood HSV value, and record the corresponding coordinates and HSV value. If it is blood, calculating the size of the blood area and blood concentration using an OpenCV algorithm. Preferably, the step of controlling the water discharge from the water discharge nozzle of the oral irrigator based on the blood area and / or blood concentration of the acquired oral cavity image is This includes controlling the water flow rate of the oral irrigator's water outlet nozzle to be large, small, or constant based on the blood area and / or blood concentration in the acquired oral image. Preferably, the step of controlling the water discharge from the water discharge nozzle of the oral irrigator based on the blood area and / or blood concentration of the acquired oral cavity image is This includes controlling the water output force of the oral irrigator's water output nozzle to be large, small, or constant based on the blood area and / or blood concentration in the acquired oral image. In a second embodiment, the oral cleaning system comprises: an oral cavity image acquisition module that acquires oral cavity images using an image acquisition device attached to the oral cavity irrigator; and a control module that controls the water output from the oral irrigator's water output nozzle based on the blood area and / or blood concentration in the acquired oral image.

[0013] Preferably, the control module specifically extracts a tooth area based on the acquired oral cavity image, extracts foreign matter from the tooth area, determines whether the foreign matter is blood or not, calculates the blood area and / or blood concentration if the foreign matter is blood, and controls the water output from the oral irrigator outlet nozzle based on the blood area and / or blood concentration, and controls the water output from the oral irrigator outlet nozzle based on the attributes of the foreign matter if the foreign matter is not blood.

[0014] Preferably, the control module specifically extracts a tooth area based on the acquired oral cavity image, extracts foreign matter from the tooth area, determines whether the foreign matter is blood, and if it is blood, calculates the blood area and / or blood concentration, converts the blood area and / or blood concentration to a bleeding level, controls the water output from the oral irrigator's water output nozzle based on the bleeding level, and determines the level of cleaning, but if it is not blood, calculates the attributes of the foreign matter, converts the attributes of the foreign matter to a foreign matter level, and controls the water output from the oral irrigator's water output nozzle based on the foreign matter level.

[0015] Preferably, the control module specifically controls the water flow rate of the oral irrigator's water outlet nozzle to be large, small, or constant based on the blood area and / or blood concentration in the acquired oral cavity image.

[0016] Preferably, the control module specifically controls the water outlet force of the water outlet nozzle of the oral irrigator to be large, small, or constant based on the blood area and / or blood concentration of the acquired oral cavity image, and / or To control the water output force of a water output nozzle of an oral irrigator to be large, small, or constant. In a third aspect, the oral irrigator includes a main body, a water outlet nozzle attached to the main body, and an image collection device, and further includes the oral irrigation system.

[0017] In a fourth aspect, the oral irrigator comprises a memory, a processor, and a computer program stored in the memory and executable by the processor, the processor performing the steps of any one of the oral irrigation methods when executing the program. Effect of the Invention

[0018] The advantageous effects of the present invention compared with the prior art are as follows:

[0019] (1) The present invention obtains an oral cavity image using an image collecting device attached to the oral irrigator, extracts tooth areas and corresponding foreign bodies based on the obtained oral cavity image, further determines whether the foreign body is blood, and if so, calculates the blood area and / or blood concentration. Based on the blood area and / or blood concentration in the obtained oral cavity image, the water outlet of the oral irrigator's water outlet nozzle is controlled, i.e., the cleaning power and amount of cleaning water are adjusted according to the bleeding condition of the teeth, thereby protecting the bleeding area from secondary damage.

[0020] (2) The present invention acquires an oral cavity image using an image collecting device attached to the oral irrigator, extracts tooth areas and corresponding foreign bodies based on the acquired oral cavity image, further determines whether the foreign body is blood, calculates the blood area and / or blood concentration if it is blood, converts the blood area and / or blood concentration into a bleeding level, and controls the water output from the oral irrigator's water output nozzle based on the bleeding level, i.e., converts the degree of tooth bleeding into several levels and adjusts the cleaning power and amount of cleaning water to protect the bleeding area from secondary damage.

[0021] (3) The present invention obtains an oral cavity image using an image collecting device attached to the oral irrigator, extracts tooth regions and corresponding foreign objects based on the obtained oral cavity image, and further determines whether the foreign object is blood. If the foreign object is not blood, the water outlet nozzle of the oral irrigator is controlled based on the attributes of the foreign object (including, but not limited to, one or more of the area of ​​the foreign object, the type of the foreign object, and the thickness of the foreign object) to thoroughly clean the foreign object from the teeth over the entire surface.

[0022] (4) After washing foreign matter (including blood) for a certain period of time, the present invention can reanalyze the foreign matter in the corresponding area, and if the foreign matter has been completely washed away, the washing is stopped, and if the foreign matter remains, the washing power and amount of washing water are adjusted to wash it. If the foreign matter still remains after a certain period of time or a certain number of times, the washing is stopped. (5) The present invention can present tooth detection results and / or tooth cleaning results by voice and / or text to allow the user to intuitively recognize the condition of their teeth.

[0023] The above description is merely an outline of the technical aspects of the present invention. In order to more clearly understand the technical means of the present invention and to implement the present invention in accordance with the contents of the specification, and to more clearly understand the above and other objects, features and advantages of the present invention, specific embodiments of the present invention are listed below. These and other objects, advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description of the preferred embodiments of the present invention when considered in conjunction with the accompanying drawings. [Brief description of the drawings]

[0024] [Figure 1] 1 is a schematic flowchart of an oral cleaning method according to an embodiment of the present invention. [Diagram 2] 2 is a detailed flowchart of an oral cleaning method according to an embodiment of the present invention. [Diagram 3] 4 is a flowchart for extracting a tooth region according to an embodiment of the present invention. [Figure 4] 1 is a flowchart for extracting a foreign object in a tooth region according to an embodiment of the present invention. [Diagram 5]4 is a flow chart for extracting blood in a tooth region according to an embodiment of the present invention. [Figure 6] 11 is a flowchart for extracting other foreign matter in a tooth region according to an embodiment of the present invention. [Figure 7] 1 is a structural block diagram of an oral cleaning system according to an embodiment of the present invention. [Figure 8] 1 is a diagram showing the principle of control of an oral irrigator according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0025] Hereinafter, the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention. It is clear that the above-mentioned embodiments constitute a part of the present invention, and not all the embodiments, but all other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts, also belong to the protection scope of the present invention.

[0026] In describing the present invention, the terms "comprising," "including," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that includes a set of elements includes not only those elements, but also other elements not expressly listed, or further includes elements inherent to such process, method, article, or apparatus. An element defined by the phrase "comprising a..." does not exclude other identical elements from being present in the process, method, article, or apparatus that includes said element, unless further limited.

[0027] In describing the present invention, the positions or positional relationships indicated by terms such as "top", "bottom", "inside", "outside", "top / bottom", etc., are based on the positions or positional relationships shown in the drawings, and are merely for ease and simplicity of describing the present invention, and do not express or imply that the devices or elements referred to have a particular position, are configured or must operate in a particular location, and therefore should not be construed as limitations of the present invention. Furthermore, the terms "first" and "second" are for descriptive purposes only, and should not be understood as expressing or implying relative importance.

[0028] In describing the present invention, unless otherwise specified and limited, terms such as "mounted," "equipped," "installed / joined," and "connected" should be understood in a broad sense. For example, the term "connected" may mean fixedly connected, detachably connected, integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected via an intermediary, or internal communication between two elements. A person skilled in the art can specifically understand the specific meaning of the above terms in the present invention. As shown in FIG. 1, in one embodiment, the present invention relates to a method for oral cleaning, comprising: Step S101 of collecting oral cavity images by an image collecting device attached to the oral irrigator; The method includes a step S102 of controlling the water outlet mode of the oral irrigator's water outlet nozzle based on the blood area and / or blood concentration in the acquired oral cavity image.

[0029] The above control method allows the operation of the water outlet nozzle of the oral irrigator to be automatically controlled based on the collected oral cavity images, eliminating the need for manual control and adjustment, which is convenient for the user. By using the above-mentioned automatic control method of the present invention, the teeth can be automatically cleaned by simply placing the oral irrigator in the oral cavity during use, reducing the difficulty of use and increasing safety. In particular, by controlling the water outlet nozzle of the oral irrigator based on the blood area and / or blood concentration in the acquired oral cavity images, the cleaning power and amount of cleaning water can be adjusted according to the bleeding condition of the teeth, thereby protecting the bleeding area from secondary damage.

[0030] Furthermore, foreign matter in this embodiment includes blood, plaque, and / or food residues. In one embodiment, the method includes controlling the water discharge from a water discharge nozzle of the oral irrigator based on the blood area and / or blood concentration of the acquired oral cavity image, The tooth area is extracted based on the acquired oral cavity image, and foreign matter in the tooth area is extracted. It is determined whether the foreign matter is blood. If it is blood, the blood area and / or blood concentration is calculated, and water output from the oral irrigator outlet nozzle is controlled based on the blood area and / or blood concentration. If it is not blood, the oral irrigator outlet nozzle is controlled based on the attributes of the foreign matter.

[0031] In this embodiment, if the identified foreign body is blood, the water outlet nozzle of the oral irrigator is controlled according to the blood area and / or blood concentration, i.e., the cleaning power and the amount of cleaning water are adjusted according to the bleeding state of the tooth, so as to protect the bleeding area from secondary damage and clean with different grades. If the identified foreign body is not blood, the cleaning power and the amount of cleaning water are adjusted according to the area of ​​the foreign body to clean with different strengths, ensuring that the foreign body is quickly washed away without damaging the oral cavity. The attributes of the foreign object include, but are not limited to, one or more of the area of ​​the foreign object, the type of the foreign object, and the thickness of the foreign object.

[0032] In one embodiment, the method includes controlling the water discharge from a water discharge nozzle of the oral irrigator based on the blood area and / or blood concentration of the acquired oral cavity image, Based on the acquired oral cavity image, a tooth region is extracted, and a foreign body in the tooth region is extracted, and it is determined whether the foreign body is blood, and if it is blood, the blood area and / or blood concentration are calculated, and the blood area and / or blood concentration are converted into a bleeding level, and the water outlet of the oral irrigator nozzle is controlled based on the bleeding level, i.e., cleaning is performed at a corresponding grade. If it is not blood, the attribute of the foreign body is calculated, and converted into a foreign body level, and the water outlet of the oral irrigator nozzle is controlled based on the foreign body level, i.e., cleaning is performed at a corresponding strength.

[0033] In this embodiment, the adjustment can be quantified to simplify the adjustment. That is, the blood area and / or blood concentration are converted into bleeding levels such as "low", "medium", and "high", and the corresponding cleaning adjustment grade is set to a cleaning mode of a grade such as "low", "medium", and "high". The correspondence between the bleeding level and the cleaning adjustment grade can be set as needed, but is not particularly limited in this embodiment. Correspondingly, for other foreign bodies, the attribute of the foreign body can be converted into a foreign body level such as "low", "medium", and "high", and the corresponding cleaning adjustment grade can also be set to a cleaning mode of a strength such as "low", "medium", and "high". The correspondence between the bleeding level and the cleaning adjustment grade can be set as needed, but is not particularly limited in this embodiment.

[0034] Specifically, as shown in FIG. 2, the oral cleaning method of the present invention includes: Step S201: taking a picture of the dental region of the oral cavity in real time using an image capture device to obtain a real-time video stream and an image for each frame; Step S202: performing image analysis on each frame image of the video stream using an OpenCV algorithm to analyze the tooth region and non-tooth region of the extracted one frame image; Step S203 of performing a secondary image analysis on the image of the extracted tooth region to analyze the extracted tooth region for foreign objects; Step S204 for determining whether the foreign matter is blood, and if it is blood, executing step S205, but if it is not blood, executing step S207; Step S205: Calculating the size of the blood area, blood concentration, and position coordinates, and quantifying the bleeding level as "low", "medium", or "high"; Step S206 of automatically adjusting the cleaning power according to the bleeding level and not performing cleaning at a high level; Step S207: Calculate the size and position coordinates of the foreign object area and quantify it into a level of "low", "medium", or "high"; and step S208 of automatically adjusting the cleaning power according to the level of foreign matter.

[0035] Specifically, as shown in FIG. 3, the OpenCV algorithm is used to perform image analysis on each frame of the video stream, and the tooth region and non-tooth region of the image of one extracted frame are analyzed. Step S301: acquiring the number of rows and columns of an image using opencv; Step S302: sequentially cycling through all pixel points of rows and columns from four directions based on rows and columns, stopping the current cycling if the tooth color is found, and continuing the next cycling, and recording the coordinates of all cycled points until the cycling is completed; and step S303 of marking the areas of the points recorded after S302 is completed as non-tooth areas, and marking the areas of the remaining points of the image as tooth areas.

[0036] The tooth color includes white, yellow, or black. Specifically, if the tooth color is white, it is determined to be the tooth color. In addition, some people's teeth become yellow or black due to not brushing their teeth for a long time or smoking for a long time, and if the area of ​​the yellow or black color is equal to or larger than a predetermined value (i.e., the area of ​​the yellow or black color is large), the yellow or black color is determined to be the tooth color, but if the area of ​​the yellow or black color is equal to or smaller than the predetermined value, the yellow or black color is determined to be a foreign object.

[0037] Specifically, referring to FIG. 4, a secondary image analysis is performed on the image of the extracted tooth region to analyze foreign objects in the extracted tooth region. Step S401: performing a THRESH_BINAR type binarization process with a threshold value of 100 on the image of the tooth region using opencv, and the color value of the processed image is 0 for the whiter parts of the teeth and 255 for the rest; Step S402: analyzing the processed image, and marking and recording all areas with a color value of 255 as foreign body areas, and recording the corresponding coordinates; and step S403 of extracting blood pixel points from the foreign body image and analyzing the extracted blood and other foreign bodies.

[0038] Specifically, referring to FIG. 5, blood pixel points are extracted from an image of a foreign object and the extracted blood is analyzed as follows: Step S501, in which the coordinates of all pixel points of the original drawing are traversed, and compared with the coordinates recorded in S402, and if the point is not a recorded point, the point is marked as white, and the processed image is colored only in the recorded point area, and the rest is white; Step S502: converting the image information into HSV format using OpenCV, comparing the HSV value of each pixel point with the corresponding blood HSV value, and if it is within the range of the blood HSV value, it is determined to be a blood part, and recording the corresponding coordinates and the corresponding HSV value; A step S503 of calculating the area of ​​the region in which the coordinates are located using opencv; and step S504 of calculating an average hsv value corresponding to the coordinate region and comparing it with the average value of the range of blood color hsv, with a larger value indicating thicker blood, i.e., a higher blood concentration.

[0039] As described above, in this embodiment, if the image is analyzed and blood is found, the size of the blood area in the image and the depth of the blood color are calculated using the OpenCV algorithm, and the level is converted to "low," "medium," or "high" depending on the size and concentration of the area. The cleaning power and amount of cleaning water are automatically adjusted depending on the "low," "medium," or "high" level of the bleeding amount. If the level is high, the area is not cleaned, preventing secondary damage to the area due to tooth cleaning.

[0040] Specifically, as shown in Figure 6, blood pixel points are extracted from the image of foreign bodies, and the extracted foreign bodies are analyzed. Step S601: traverses the coordinates of all pixel points in the original image and compares them with the coordinates of the foreign object area (S402). If the point is not a recording point, the point is marked as white. The processed image has only the recording point area colored and the rest is white. converting the image information into HSV format using OpenCV, comparing the HSV value of each pixel point with the corresponding blood HSV value, and if the HSV value is not within the range of the blood HSV value, determining that the pixel is another foreign body part and recording the corresponding coordinates; A step S603 of calculating the area of ​​the region where the coordinates are located using opencv; and step S604 of comparing the calculated area with a preset level area to obtain a foreign object level.

[0041] As described above, in this embodiment, when a foreign substance other than blood is analyzed, the magnitude of the attribute of the foreign substance is calculated using OpenCV and similarly quantified into the levels of "low", "medium", and "high", and the cleaning power and amount of cleaning water are automatically adapted according to the level of the foreign substance ("low", "medium", or "high").

[0042] It should be noted that the above levels of "low", "medium", and "high" are merely examples, and in a specific implementation, more or fewer levels may be set as necessary, and the specific level corresponding to the amount of outflow flow rate or outflow force can be set according to actual needs, and this embodiment is not particularly limited.

[0043] Furthermore, the oral cleaning method of this embodiment is After washing away foreign matter (including blood) for a certain period of time, the area is analyzed again for foreign matter, and if the foreign matter has been cleaned, the washing is stopped, and if the foreign matter is still present, the grade is adjusted and washing is continued.

[0044] If foreign matter still remains after cleaning for a certain period of time, it is analyzed that there may be tartar. In this case, the cleaning of this area is stopped, and the user is proposed to go to the dentist to protect oral health.

[0045] Furthermore, in this embodiment, based on the blood area and / or blood concentration of the acquired oral cavity image, the water output flow rate of the water outlet nozzle of the oral cavity cleaner is controlled to be increased, decreased, or constant and / or, based on the blood area and / or blood concentration of the acquired oral cavity image, the water output force of the water outlet nozzle of the oral cavity cleaner can be controlled to be increased, decreased, or constant.

[0046] Specifically, when the foreign matter is blood, the cleaning level is determined according to the blood area and / or blood concentration. When it is determined to be at a high level based on the blood area and / or blood concentration, the water outlet nozzle of the oral cavity cleaner is controlled not to perform cleaning. In the case of a medium level, low-speed cleaning (for example, the rotation speed of the motor is low and it flushes for 1 second) is started, and in the case of a low level, medium-speed cleaning (for example, the motor rotation speed is medium and it flushes for 3 seconds) is started, while the bleeding area can be protected from secondary damage while flushing the blood.

[0047] Specifically, when the foreign matter is not blood, when the foreign matter area S is equal to or greater than the judgment threshold value Sthl, the water outlet nozzle of the oral cavity cleaner is controlled to perform cleaning. In this embodiment, the oral cavity cleaner is set to three cleaning grades as follows according to the foreign matter area S. When Sthl < S < Sl, the foreign matter area is small, and the low-speed grade (the rotation speed of the motor is low and it flushes for 1 second) is started. When Sl < S < Sh, the foreign matter area is medium, and the medium-speed grade (the rotation speed of the motor is medium and it flushes for 3 seconds) is started. When S > Sh, the foreign matter area is large, and the high-speed grade (the rotation speed of the motor is high and it flushes for 5 seconds) is started. The above is only one exemplary embodiment, and the specific grades and cleaning times can be set according to the actual application and are not limited to the embodiments of the present invention.

[0048] In this embodiment, the image collecting device includes a visible light imaging device, an infrared thermal imaging device or an ultraviolet imaging device, and may be a bendable camera in particular. The image collecting device and the oral irrigator form a detachable or non-detachable connection. Of course, other imaging devices may be used as long as they can capture images of the oral cavity and achieve the above-mentioned functions.

[0049] In this embodiment, the video stream captured by the imaging device is transmitted to an external terminal device such as a mobile phone via a wireless network, and after being analyzed and processed by the mobile phone, is returned to the oral irrigator to control the water discharge from the water discharge nozzle, and the external terminal device presents voice, text, or images. Of course, the video stream captured by the imaging device may be directly analyzed and processed by the oral irrigator to control the water discharge from the water discharge nozzle of the oral irrigator, and the results of the analysis may be transmitted to an external terminal device such as a mobile phone via a wireless network to present voice, text, or images.

[0050] As shown in FIG. 7, in another aspect, the present invention relates to an oral cleaning system, An oral cavity image acquisition module 701 that acquires oral cavity images using an image acquisition device attached to the oral cavity irrigator; and a control module 702 that controls the water output from the oral irrigator's water output nozzle based on the blood area and / or blood concentration in the acquired oral cavity image.

[0051] In one embodiment, the control module 702 specifically extracts a tooth area based on the acquired oral cavity image, extracts foreign matter from the tooth area, determines whether the foreign matter is blood, calculates the blood area and / or blood concentration if the foreign matter is blood, and controls the water output from the oral irrigator outlet nozzle based on the blood area and / or blood concentration, and controls the water output from the oral irrigator outlet nozzle based on the attributes of the foreign matter if the foreign matter is not blood.

[0052] In one embodiment, the control module 702 specifically extracts a tooth area based on the acquired oral cavity image, extracts foreign matter from the tooth area, determines whether the foreign matter is blood, and if so, calculates the blood area and / or blood concentration, converts the blood area and / or blood concentration into a bleeding level, and controls the water outlet nozzle of the oral irrigator based on the bleeding level; if not, calculates the attributes of the foreign matter, converts the attributes of the foreign matter into a foreign matter level, and controls the water outlet nozzle of the oral irrigator based on the foreign matter level.

[0053] In one embodiment, the control module 702 specifically controls the water flow rate of the oral irrigator's water outlet nozzle to be large, small, or constant based on the blood area and / or blood concentration in the acquired oral image.

[0054] In one embodiment, the control module 702 specifically controls the water outlet force of the oral irrigator nozzle to be large, small, or constant based on the blood area and / or blood concentration in the acquired oral image. The specific implementation of the oral cavity image acquisition module 701 and the control module 702 is referred to in the oral cavity cleaning method, and will not be described here repeatedly.

[0055] In a third aspect, the oral irrigator of the present invention includes a main body, a water outlet nozzle attached to the main body, and an image collecting device, and further includes the oral irrigation system. In this embodiment, the oral irrigation system is realized by a controller (e.g., an MCU).

[0056] In order to facilitate the user to observe his / her own oral cavity, the smart terminal further includes an app, which wirelessly connects to an image collecting device and displays the imaging area of ​​the image collecting device on the app in real time, or displays a picture of the oral cavity taken by the image collecting device on the app. This allows the user to observe his / her oral cavity in real time while cleaning the teeth, or take a picture of the oral cavity and observe it carefully. Referring to FIG. 8, the control principle of the oral irrigator of the present invention is as follows. A power supply module 804 connected to the controller 801, the image collecting device 802, and the pump unit 803 supplies power to the controller 801, the image collecting device 802, and the pump unit 803, respectively. A control switch 805 connected to the controller 801 controls the controller 801 to start operating. The image collecting device 802 is connected to the controller 801 and transmits the collected oral cavity image to the controller 801. The controller 801 identifies the oral cavity image, and when it identifies an oral cavity image that meets a condition, it controls the connected pump unit 803. The pump unit 803 is controlled to eject water from the water tank 806 through the water outlet nozzle 807 to rinse the teeth.

[0057] In the above explanation, automatic control by a controller is used as an example, but "controlling the water output from the water output nozzle of the oral irrigator based on the blood area and / or blood concentration in the acquired oral cavity image" may be manual control, or both automatic and manual control functions may be mixed. When automatic and manual control are mixed, when the control switch 805 is on, automatic control takes priority, but when it is off, manual control is used. In the case of manual control, a manual control switch and a presentation means may be provided on the main body of the oral irrigator, and when the user recognizes the need to wash the teeth or adjust the water output from the acquired oral cavity image, the user can control or adjust according to the presentation by the presentation means.

[0058] In a fourth aspect, an oral irrigator according to the present invention includes a memory, a processor, and a computer program stored in the memory and executable by the processor, and when the processor executes the program, performs the steps of the oral irrigation method.

[0059] Specifically, the processor: Oral images are taken using an image capture device attached to the oral irrigator. The apparatus is configured to control the water flow from the oral irrigator's water flow nozzle based on the blood area and / or blood concentration in the acquired oral image. In this embodiment, the memory and processor are integrated into and implemented by the controller.

[0060] The above is merely a preferred embodiment of the present invention, and the scope of protection of the present invention is not limited thereto. Those skilled in the art can make equivalent replacements or modifications within the technical scope of the present invention based on the technical idea of ​​the present invention and its improved ideas, which are also included in the scope of protection of the present invention. [Industrial Applicability]

[0061] The present invention relates to an oral cleaning method, an oral cleaning system, and an oral irrigator, which acquires an image of the oral cavity with an image collecting device attached to the oral irrigator, and controls the water discharge from the water discharge nozzle of the oral irrigator based on the blood area and / or blood concentration in the acquired oral cavity image. The present invention adjusts the cleaning power and the amount of cleaning water according to the bleeding state of the teeth, protecting the bleeding area from secondary damage and thoroughly cleaning foreign matter from the teeth all over, and has a wide range of applications and excellent industrial practicality.

Claims

1. A step in which a processor of an oral irrigator acquires an oral cavity image using an image acquisition device attached to the oral irrigator; The processor extracts a tooth region and a foreign object in the tooth region based on the acquired oral cavity image, and determines whether the foreign object is blood; When the foreign matter is blood, the processor calculates a blood area and / or a blood concentration, and controls the water flow from the water flow nozzle of the oral irrigator to be reduced as the level of the blood area and / or the blood concentration increases; A method for controlling an oral irrigator, comprising: a step in which the processor controls the water output from the oral irrigator's water output nozzle based on the attributes of the foreign object if the foreign object is not blood.

2. A method for controlling an oral irrigator as described in claim 1, characterized in that the processor calculates the blood area and / or blood concentration, converts the blood area and / or blood concentration into a bleeding level, controls the water flow from the oral irrigator's water flow nozzle based on the bleeding level, and determines the level of cleaning.

3. A method for controlling an oral irrigator as described in claim 1, characterized in that the processor calculates attributes of the foreign object, converts the attributes of the foreign object into a foreign object level, controls the water output from the oral irrigator's water output nozzle based on the foreign object level, and determines the level of cleaning.

4. Extracting a tooth region based on the acquired oral cavity image includes: The processor obtains the number of rows and columns of the oral cavity image using OpenCV; The processor cycles through all pixel points of all rows and columns in four directions in sequence based on rows and columns, and if the tooth color is found, stops the current cycle and continues the next cycle, and records the coordinates of all cycled points until the cycle is completed; A method for controlling an oral irrigator as described in any one of claims 1 to 3, characterized in that the processor includes a step of marking an area consisting of the recorded points as a non-tooth area and marking an area consisting of the remaining points of the image as a tooth area.

5. Extracting a tooth region based on the acquired oral cavity image and extracting a foreign body from the tooth region includes: The processor extracts a tooth region based on the acquired oral cavity image, performs a THRESH_BINARY type binarization process on the tooth region image using OpenCV with a threshold value of 100, and marks the color values ​​of the image after the binarization process as 0 for white parts and 255 for others; A method for controlling an oral irrigator as described in any one of claims 1 to 3, characterized in that the processor includes a step of recording all areas with a color value of 255, marking them as foreign object areas, and recording the corresponding coordinates.

6. Extracting a tooth region based on the acquired oral cavity image, extracting a foreign body from the tooth region, determining whether the foreign body is blood, and if so, calculating a blood area and / or blood concentration, The processor traverses the coordinates of all pixel points in the oral cavity image, compares them with the coordinates of the recorded foreign body area, and sets the corresponding pixel point to white if it is not a recorded point; The processor converts the adjusted oral cavity image into HSV format using OpenCV, compares the HSV value of each pixel point with the corresponding blood HSV value, and determines that the pixel point is blood if it is within the range of the blood HSV value, and records the corresponding coordinate and HSV value. The oral irrigator control method described in claim 5, characterized in that if it is blood, the processor calculates the size of the blood area and blood concentration using an OpenCV algorithm.

7. The method for controlling an oral irrigator according to claim 1, characterized in that the control of the water outlet from the oral irrigator's water outlet nozzle includes controlling the water outlet flow rate of the oral irrigator's water outlet nozzle to be large, small, or constant.

8. The method for controlling an oral irrigator according to claim 1, characterized in that control of the water outlet of the oral irrigator's water outlet nozzle includes controlling the water outlet force of the oral irrigator's water outlet nozzle to be large, small, or constant.

9. 1. An oral cleaning system comprising: an oral cavity image acquisition module that acquires oral cavity images using an image acquisition device attached to the oral cavity irrigator; An oral cleaning system comprising: a control module that controls the water output from the oral irrigator's water output nozzle to be reduced as the blood area and / or blood concentration level in the acquired oral image increases.

10. The oral cleaning system described in claim 9, characterized in that the control module specifically extracts a tooth area based on an acquired oral image, extracts foreign matter from the tooth area, determines whether the foreign matter is blood, calculates the blood area and / or blood concentration if the foreign matter is blood, and controls the oral irrigator's water outlet nozzle to reduce water flow based on the blood area and / or blood concentration, but if the foreign matter is not blood, controls the oral irrigator's water outlet nozzle to reduce water flow based on the attributes of the foreign matter.

11. The oral cleaning system described in claim 9, characterized in that the control module specifically extracts a tooth area based on the acquired oral image, extracts foreign matter from the tooth area, determines whether the foreign matter is blood, calculates the blood area and / or blood concentration, converts the blood area and / or blood concentration to a bleeding level, controls the water output from the oral irrigator's water output nozzle based on the bleeding level, and determines the level of cleaning, but if the foreign matter is not blood, calculates the attributes of the foreign matter, converts the attributes of the foreign matter to a foreign matter level, controls the water output from the oral irrigator's water output nozzle based on the foreign matter level, and determines the level of cleaning.

12. The oral cleaning system described in claim 9, characterized in that the control module specifically controls the water outlet flow rate of the oral irrigator to be large, small, or constant, and / or controls the water outlet force of the oral irrigator to be large, small, or constant, based on the blood area and / or blood concentration in the acquired oral image.

13. An oral irrigator comprising a main body, a water outlet nozzle attached to the main body, and an image collection device, and further comprising an oral cleaning system described in any one of claims 9 to 12.

14. An oral irrigator comprising a memory, a processor, and a computer program stored in the memory and executable by the processor, wherein when the processor executes the program, it performs the steps of the oral irrigator control method described in any one of claims 1 to 8.

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