Chewing capacity measuring method, chewing capacity confirming system and special support

Abstract

It is desirable to provide a method capable of objectively, accurately, and simply measuring the color of a chewing-type test gum that has been chewed. The chewing-type inspection glue that has been chewed is placed on a dedicated holder 10 on which a hue reference color 12 is displayed, and the dedicated holder 10 is photographed using a camera. A correction amount related to the color of the captured hue reference color image is calculated by comparing the hue reference color 12 in the captured image with the hue reference color 12 displayed on the dedicated stand 10. The true color of the chewing-type test glue placed on the dedicated holder 10 is detected by applying the correction amount to the color of the chewing-type test glue image. The chewing ability of a person who has chewed the chewing-type test gum is measured by applying the real color of the chewing-type test gum that has been chewed to a pre-stored chewing ability determination color code.

Description

Technical Field

[0001] The present invention relates to a method for measuring chewing ability by using a chewable test gum, a chewing ability confirmation system, and a dedicated holder on which the chewable test gum is placed. Background Art

[0002] In recent years, with the increasing attention to healthy life expectancy, attention has been focused on "chewing ability" which is one of the barometers of healthy life expectancy. This has led to a need for a method for easily determining chewing ability. Although the determination of chewing ability can be achieved by using dedicated equipment, a more convenient means is the "chewable test gum" ("xylitol chewable test gum" (Non-Patent Document 1)). The chewable test gum is designed such that its color changes from green to red as it is chewed in the mouth. Therefore, the degree of color change can be used to determine chewing ability.

[0003] Exemplary methods for the degree of color change reflecting chewing ability include: a method of visually determining the color of the gum after chewing with reference to a five-level or ten-level color scale (see Patent Document 1 and Patent Document 2); and a method of objectively measuring the color of the gum after chewing using an instrument called a "color difference meter".

[0004] In the former method, the color of the gum after chewing is visually compared with a color sample, and thus there are problems of lack of objectivity and accuracy. In the latter method, the color difference meter used for measurement is very expensive, and thus there is a problem that the color difference meter is not easy to use.

[0005] Citation List

[0006] Patent Documents

[0007] Patent Document 1: JP5443927 (which describes a method for preparing a color scale for the determination of chewing ability)

[0008] Patent Document 2: JP5843567 (which describes a method for preparing a color scale for the determination of chewing ability)

[0009] Non-Patent Documents

[0010] Non-Patent Document 1: oralcare.co.jp / product / post-32.html Summary of the Invention

[0011] Problems to be Solved by the Invention

[0012] An object of the present invention is to provide a method and apparatus capable of objectively, accurately, and easily measuring the color of the gum after chewing. Another object of the present invention is to provide a method and apparatus for determining chewing ability based on the measured gum color.

[0013] Solution to the problem

[0014] Use a camera and image analysis application such as a smartphone to take pictures of the chewed gum placed on a dedicated stand and analyze it, and determine the chewing ability based on the color of the gum.

[0015] Specifically, first place the chewed gum on the stand, which shows a color chart including printed primary colors and the gum placement position. Subsequently, take a picture of the stand and the gum on the stand with a camera such as a smartphone. Then, determine the chewing ability by using an application to analyze the image of the gum taken and calculate the degree of color change of the gum.

[0016] The features of the stand include a chromaticity reference color (color chart), a brightness correction gray, and a gum position detection mark set on the stand.

[0017] The chromaticity reference color (color chart) can be used to analyze the color of the gum taken in the picture. In addition, gray is set around the chromaticity reference color (color chart) so that the brightness non-uniformity (such as lighting conditions) of the chromaticity reference color (color chart) can be corrected. Therefore, the brightness of the chromaticity reference color (color chart) can be accurately corrected. In addition, the setting of the gum position detection mark enables accurate detection of the position of the placed (positioned) gum and accurate analysis of the color of the gum.

[0018] The analysis mechanism can be embodied by a process based on a dedicated program or application software.

[0019] Advantages of the invention

[0020] According to the present invention, by using a camera such as a smartphone to take pictures of the gum placed on the measurement stand and analyzing the image of the gum, the color of the chewed gum can be objectively, accurately and easily measured. Then, the chewing ability can be determined based on the color of the chewed gum.

[0021] Referring to the image correction process performed on the image data of the chromaticity reference color (color chart) included in a single image and the chromaticity reference color (color chart) of the image of the chewed gum, specifically, the accurate color of the gum can be detected by considering the image correction process performed on the image of the gum. Therefore, the chewing ability can be determined. Description of the drawings

[0022] Figure 1 It is a diagram showing a dedicated stand according to an exemplary embodiment of the present invention.

[0023] Figure 2 It is a block diagram of the configuration of a chewing ability confirmation system according to an exemplary embodiment of the present invention.

[0024] Figure 3It is a flowchart showing a process performed by a chewing ability confirmation system according to an exemplary embodiment of the present invention.

[0025] Figure 4 It is a screen image of the chewing ability determination result received by the user. Detailed Description of the Invention

[0026] Hereinafter, an exemplary embodiment of the present invention will be specifically described with reference to the accompanying drawings.

[0027] In the following detailed description of the exemplary embodiment of the present invention, as an example, "Xylitol Chewing Test Gum (trade name)" is used as the chewing test gum. Xylitol Chewing Test Gum (trade name) is a specially designed gum that is initially green in the unchewed state and gradually changes from green to red as its pH value increases from acidic pH to alkaline pH value by sufficient chewing.

[0028] Figure 1 It is a plan view showing an exemplary dedicated holder on which, for example, the chewed Xylitol Chewing Test Gum (trade name) obtained after chewing 60 times is placed.

[0029] The dedicated holder 10 includes a sheet made of, for example, paper (cardboard), plastic sheet, metal sheet, etc. As an example, the dedicated holder 10 has a substantially square shape, and a gum placement position 11 for placing the chewed chewing test gum (hereinafter, simply referred to as "gum") is defined in the central portion of the dedicated holder 10. The dedicated holder 10 includes a chromaticity reference color (color comparison chart) 12 printed in a region extending horizontally along its upper edge 10U. The color comparison chart 12 includes reference colors for detecting the color of the gum placed at the gum placement position 11. Specifically, the color comparison chart 12 includes four color patches, namely, a cyan patch C, a magenta patch M, a yellow patch Y, and a black patch K, which are arranged horizontally (laterally) along the upper edge 10U of the dedicated holder 10. In the drawings herein, since the color symbols are not common, these four color patches are not colored but are indicated by the letters C, M, Y, K.

[0030] The dedicated holder 10 further includes gum position detection marks 13L, 13R provided on the left and right sides of the color comparison chart 12. The gum position detection marks 13L, 13R are required for the identification of the gum detection position so that the gum placement position on the dedicated holder 10 (i.e., the gum placed on the dedicated holder 10) can be accurately detected. The gum position detection marks 13L, 13R enable, for example, the region 14 indicated by a dotted line to be recognized as a detection region to detect the color in this detection region 14 (i.e., the color of the gum).

[0031] In the present exemplary embodiment, two glue position detection marks 13L and 13R are provided in a spaced-apart relationship, thereby improving the position detection accuracy of the detection area 14. In addition, the positions of the color comparison table 12 and the gray color 15 can also be accurately detected.

[0032] On the dedicated bracket 10 according to the present exemplary embodiment, as an example, two glue position detection marks 13L and 13R are provided on the left and right sides of the color comparison table 12, but three or four glue position detection marks can also be provided on the bracket 10. Alternatively, a single glue position detection mark can also be provided according to the indication of the mark.

[0033] Examples of the glue position detection mark include a two-dimensional code (e.g., QR code (registered trademark)).

[0034] On the dedicated bracket 10, the gray color 15 is provided in the peripheral area surrounding the color comparison table 12 and the glue position detection marks 13L and 13R. The gray color 15 is provided for correcting the uneven illuminance (such as lighting conditions) of the color comparison table 12 when reading the color comparison table 12. The setting of the gray color 15 enables the color of the color comparison table 12 and the glue to be read based on uniform brightness. This improves the detection accuracy of the glue color.

[0035] In the present exemplary embodiment, the gray color 15 is also provided around the glue position detection marks 13L and 13R, but can also be provided at least around the color comparison table 12.

[0036] In the present exemplary embodiment, as an example, achromatic gray is provided as the gray color 15. A single illuminance determination reference color (e.g., a (chromaticity) monochromatic color having medium luminous intensity or intermediate luminous intensity) can also be used instead of achromatic gray.

[0037] In a modification of the dedicated bracket 10, a specific QR code (registered trademark) can be provided, for example, in the glue placement position 11. The dedicated bracket 10 can be designed such that a network application is launched by reading the QR code (registered trademark) with the camera 31 of the smart phone 30 described later to perform a process between the smart phone 30 and the server 40.

[0038] Furthermore, a preferred form of the dedicated bracket 10 is such that the color comparison table 12, the glue position detection marks 13L and 13R, and the gray color 15 are provided on one side of the bracket surface (e.g., in a region closer to one edge of the bracket surface (specifically, the upper edge 10U)), and the glue placement position is defined in the remaining part of the bracket surface, thereby avoiding interference between the glue placement position and the color comparison table 12, the glue position detection marks 13L and 13R, and the gray color 15, facilitating the positioning of the glue, and facilitating use.

[0039] Figure 2 is a configuration block diagram of a chewing ability confirmation system according to an exemplary embodiment of the present invention.

[0040] As an example, the chewing ability confirmation system 20 may be composed of a smartphone 30 and a server 40.

[0041] The smartphone 30 generally includes a camera 31, a display portion 32 capable of displaying images taken by the camera 31, etc., and an image correction portion 33 capable of correcting the images taken by the camera 31. The image correction portion 33 is sometimes based on hardware, but generally based on software capable of executing model-specific image correction processes designed specifically for the smartphone 30.

[0042] In addition, the smartphone 30 includes a transmitter / receiver portion 34 for transmitting and receiving data such as image data (for communication).

[0043] As described above, the smartphone 30 is installed with a specific smartphone application or launches a specific web application to communicate with the server 40, so that the server 40 performs a predetermined process and obtains the result of the process.

[0044] In this exemplary embodiment, the smartphone 30 is used only as an example, not a limitation. Alternatively, any of various information processing terminals (e.g., a PC (personal computer) or a tablet having a camera function) may be used to communicate with the server 40.

[0045] The server 40 includes various functional processing portions, such as a transmitter / receiver portion 41 for communicating with the smartphone 30 on the client side (user), a marked position recognition portion 42, a brightness correction amount calculation portion 43, a color correction amount calculation portion 44, a color change amount calculation portion 45, and a chewing ability determination result image preparation portion 46. The functions of these functional processing portions 41 to 46 can be embodied based on data and a predetermined program (software) pre-stored in the server 40.

[0046] Figure 3 is a flowchart showing the process executed by the Figure 2 shown chewing ability confirmation system 20 according to an exemplary embodiment of the present invention. In Figure 3 it, the left half of the flowchart shows the process sequence executed on the user side (including the process steps manually performed by the user), and the right half of the flowchart shows the process sequence executed in the server (i.e., the process sequence executed based on the program).

[0047] Referring to Figure 3 , first, the user chews xylitol chewing test gum (trade name) for example 60 times (step U1). Then, the chewed gum is placed at the gum placement position 11 on the dedicated bracket 10 (step U2).

[0048] Subsequently, a smartphone application or a web application for chewing ability check is launched, and then a dedicated holder 10 with gum placed thereon is photographed by the camera of the smartphone 30 (step U3).

[0049] As in the foregoing example, a specific QR code (registered trademark) is set at the gum placement position 11 of the dedicated holder 10, and the specific QR code (registered trademark) can be read before placing the gum to launch the web application.

[0050] When photographing the dedicated holder 10 with gum placed thereon by the camera of the smartphone 30, the gum, together with the colorimetric chart 12, the gum position detection marks 13L, 13R, and the gray 15 set on the dedicated holder 10, is photographed.

[0051] When photographing by the camera 31 of the smartphone 30, the smartphone 30 sometimes automatically performs a model-specific image correction process on the captured image based on the camera application (step U4).

[0052] However, even if the image correction process is performed, only the entire captured image undergoes the image correction process, and different image correction processes are not performed separately on the image of the colorimetric chart 12 and the image of the gum. Therefore, according to the exemplary embodiments of the present invention, the image correction process does not affect the detection of the color of the gum.

[0053] The smartphone 30 sends the image data of the dedicated holder 10 captured by the camera 31 to the server 40 (step U5).

[0054] After receiving the image data of the dedicated holder 10 through the smartphone application or the web application (step S1), the server 40 identifies the images of the gum position detection marks 13L, 13R in the image data (step S2). If the images of the gum position detection marks 13L, 13R cannot be identified in the image data (''No'' in step S3), the server 40 sends a reshooting command to the smartphone 30 to reshoot the dedicated holder 10 (step S4).

[0055] On the other hand, if the images of the gum position detection marks 13L, 13R can be identified in the image data (''Yes'' in step S3), it is determined that all necessary images of the dedicated holder 10 have been captured. Refer to Figure 1 , more specifically, if the gum position detection marks 13L, 13R can be identified in the captured image of the dedicated holder 10, it is determined that the captured image of the holder includes the images of the colorimetric chart 12 and the gray 15 existing between the gum position detection marks 13L, 13R, and the image of the detection area 14 in the middle part below the gum position detection marks 13L, 13R.

[0056] Then, based on the positions of the glue position detection marks 13L and 13R, the server 40 identifies the image area 12 in which the color comparison table 12 is displayed, and detects the RGB values of the CMYK color marks in the image area 12. In addition, based on the positions of the glue position detection marks 13L and 13R, the server 40 identifies the image area 15 in which the gray 15 is displayed, and detects the light emission intensity value of the gray in the image area 15 (for example, a light emission intensity value indicating one of 256 levels defined in units of 8 bits).

[0057] Then, the RGB values of the detected CMYK color marks are corrected by using the light emission intensity value of the gray set near the CMYK color marks, thereby correcting the illuminance non-uniformity of the color comparison table 12 (step S5).

[0058] That is, in step S5, the RGB values of the CMYK color marks in the image area 12 in which the color comparison table 12 is displayed are corrected by using the light emission intensity value of the gray, so as to eliminate the influence of the light source from the RGB values of the CMYK color marks (to offset the influence of the light source).

[0059] Subsequently, the server 40 calculates the amount of color correction performed by the smartphone 30 (step S6). The RGB values of the CMYK color marks corrected in step S5 are used for the calculation of the color correction amount.

[0060] The degree and manner of color correction performed by the smartphone 30 can be calculated by comparing the image of the color comparison table 12 taken with the color comparison table 12 printed on the dedicated holder 10. Then, the differences in hue, brightness, chromaticity, etc. (correction amount) between the color comparison table 12 printed on the dedicated holder 10 and the image of the color comparison table 12 taken by the smartphone 30 can be calculated, for example, as a correction formula.

[0061] In addition, based on the positions of the glue position detection marks 13L and 13R, the server 40 detects the image observed in the detection area 14 of the dedicated holder 10 (i.e., the image of the glue). Since the color comparison table 12 and the glue are different from each other in physical properties, the image of the color comparison table 12 taken and the image of the glue taken are slightly different from each other in terms of brightness and the like. The smartphone 30 performs color correction on the image of the glue in the same manner as the image of the color comparison table 12. Therefore, the server 40 applies the calculated correction formula to the color of the detected glue image to detect the correct color (true color) of the glue (step S6).

[0062] Then, the true color of the glue detected thereby is compared with a pre-registered reference color (the color of the unchewed xylitol chewing type test glue), thereby calculating the amount of color change of the glue due to chewing (step S7).

[0063] Subsequently, a chewing ability determination result image is prepared by applying the calculated amount of color change to a color scale pre-registered for the determination of the chewing ability of xylitol gum (step S8).

[0064] The chewing ability determination result image thus prepared is sent to the smartphone 30 (step S9).

[0065] The user receives the chewing ability determination result image on the smartphone 30 (step U6). Thus, the user can understand his or her chewing ability, which is advantageously used to control his or her future living habits and the like.

[0066] Figure 4 A screen image showing the chewing ability determination result received by the user for reference is shown.

[0067] In the exemplary embodiment described above with reference to Figure 2 and Figure 3 the chewing ability confirmation system is composed of the smartphone 30 and the server 40.

[0068] Alternatively, the chewing ability confirmation system according to the present invention may include only the smartphone 30. In this case, functional processing parts such as the marker position recognition part 42, the brightness correction amount calculation part 43, the color correction amount calculation part 44, the color change amount calculation part 45, and the chewing ability determination result image preparation part 46 provided in the server 40 as shown in Figure 2 are embodied based on software by pre-storing data in the smartphone 30 and installing a predetermined program (software) in the smartphone 30.

[0069] Then, the software process executed by the smartphone 30 is a combination of the process sequences other than steps U5 and U6 and steps S1 and S9 in the process sequences respectively executed by the user and the server as shown in Figure 3 In the above exemplary embodiment, the amount of color change of the gum due to chewing is calculated in step S7, but the calculation of the color change amount may be omitted. Since the true gum color changed due to chewing is detected in step S6, in order to omit the calculation of the color change amount, the level of chewing ability may be determined or judged based on the gum color after chewing (for example, by applying the true color of the gum after chewing to the parameters of the relationship between chewing ability and gum color change).

[0070] The present invention is not limited to the above exemplary embodiment. The features of the present invention based on the scope of the present invention are as follows:

[0071] The present invention is not limited to the above exemplary embodiments. The features of the present invention based on the scope of the present invention are as follows:

[0072] The present invention provides a method for measuring chewing ability by using a chewable test gum, the method comprising the following steps: placing the chewed chewable test gum on a dedicated support 10 provided with a chromaticity reference color 12; photographing the dedicated support 10 on which the chewable test gum is placed by a camera, and forming an image including the image of the chromaticity reference color 12 and the image of the chewable test gum; comparing the image of the chromaticity reference color 12 included in the formed image with the chromaticity reference color 12 provided on the dedicated support 10 to calculate the color correction amount of the chromaticity reference color image included in the formed image; applying the calculated color correction amount to the color of the chewable test gum image included in the formed image to detect the true color of the chewable test gum placed on the dedicated support 10; and comparing the detected true color of the chewable test gum with the color of the unchewed chewable test gum registered in advance, and calculating the amount of color change of the gum due to chewing.

[0073] The present invention also provides a method for measuring chewing ability by using a chewable test gum, the method comprising the following steps: placing the chewed chewable test gum on a dedicated support 10 provided with a chromaticity reference color 12; photographing the dedicated support 10 on which the chewable test gum is placed by a camera, and forming an image including the image of the chromaticity reference color 12 and the image of the chewable test gum; comparing the image of the chromaticity reference color 12 included in the formed image with the chromaticity reference color 12 provided on the dedicated support 10 to calculate the color correction amount of the chromaticity reference color image included in the formed image; applying the calculated color correction amount to the color of the chewable test gum image included in the formed image to detect the true color of the chewable test gum placed on the dedicated support 10; and applying the detected true color of the chewable test gum to a pre-stored chewing ability determination color scale, thereby determining the chewing ability of the person who has chewed the chewable test gum, and outputting the chewing ability of the person.

[0074] In the method for measuring chewing ability according to the present invention, the dedicated support 10 includes a single illuminance determination reference color provided near the chromaticity reference color, and the step of calculating the color correction amount of the chromaticity reference color image includes: a step of correcting the illuminance non-uniformity of the chromaticity reference color 12 based on the luminance of the single illuminance determination reference color.

[0075] In the present invention, achromatic gray can be used as the single illuminance determination reference color.

[0076] In the chewing ability measurement method according to the present invention, the dedicated bracket 10 is provided with position detection marks 13L and 13R, and the method includes the following steps: based on the images of the position detection marks 13L and 13R, detecting the image of the chromaticity reference color 12 and the image of the chewing type inspection gum in the image formed by photographing the dedicated bracket 10 using a camera.

[0077] In addition, the present invention provides a chewing ability confirmation system for checking chewing ability by using a chewing type inspection gum, the system includes: a camera for photographing the dedicated bracket 10 provided with the chromaticity reference color 12, wherein the chewed chewing type inspection gum is placed at a predetermined position of the dedicated bracket 10; a specific image extraction device for extracting the image of the chromaticity reference color 12 and the image of the chewing type inspection gum from the image formed by photographing the dedicated bracket 10 using the camera; a correction amount calculation device for comparing the chromaticity reference color image extracted by the specific image extraction device with the chromaticity reference color 12 of the dedicated bracket 10 to calculate the amount of color correction performed on the chromaticity reference color image; a color detection device for correcting the color of the chewing type inspection gum image by applying the color correction amount calculated by the correction amount calculation device to the color of the chewing type inspection gum image extracted by the specific image extraction device to detect the true color of the chewing type inspection gum placed on the dedicated bracket 10; and an output device for applying the true color of the chewing type inspection gum detected by the color detection device to a pre-stored chewing ability determination color scale to determine the chewing ability of the person who has chewed the chewing type inspection gum and output the chewing ability of the person.

[0078] In the chewing ability confirmation system according to the present invention, the dedicated bracket 10 is provided with position detection marks 13L and 13R for identifying the positions of the images to be extracted, and the specific image extraction device identifies the positions of the chromaticity reference color image and the chewing type inspection gum image to be extracted based on the images of the position detection marks in the image formed by photographing the dedicated bracket 10 using the camera, and extracts the images of the identified positions.

[0079] The chewing ability confirmation system according to the present invention includes an information processing terminal having a camera function, and the camera is embodied by the camera function of the information processing terminal. The specific image extraction device, the correction amount calculation device, the color detection device and the output device are embodied by programs installed in the information processing terminal.

[0080] The chewing ability confirmation system according to the present invention includes an information processing terminal having a camera function and a server, and the camera is embodied by the camera function of the information processing terminal. The specific image extraction device, the correction amount calculation device, the color detection device and the output device are embodied by programs installed in the server.

[0081] The present invention also provides a dedicated bracket 10 for measuring chewing ability by using a chewable test gum. The dedicated bracket 10 has a predefined area on the surface of the bracket as the position for placing the chewable test gum after chewing, and includes a chromaticity reference color 12 printed at a position different from the predefined area on the surface of the bracket. The dedicated bracket 10 further includes position detection marks 13L, 13R which are provided for identifying the predefined area associated with the position where the chromaticity reference color 12 is printed on the bracket.

[0082] The dedicated bracket according to the present invention includes gray printed around the chromaticity reference color printed on the bracket.

[0083] The dedicated bracket according to the present invention may include a sheet of paper, plastic or metal.

[0084] In the dedicated bracket according to the present invention, the chromaticity reference color, the position detection marks and the gray are provided in a surface area closer to one edge of the dedicated bracket, and the position for placing the chewable test gum is provided in the surface area of the bracket other than the area closer to the one edge.

[0085] Description of reference numerals

[0086] 10: Dedicated bracket

[0087] 11: Gum placement position

[0088] 12: Chromaticity reference color

[0089] 13L, 13R: Position detection marks

[0090] 14: Detection area

[0091] 15: Gray

[0092] 20: Chewing ability confirmation system

[0093] 30: Smart phone

[0094] 31: Camera

[0095] 32: Display part

[0096] 33: Image correction part

[0097] 34: Transmitter / receiver part

[0098] 40: Server

[0099] 41: Transmitter / receiver part

[0100] 42: Mark position recognition part

[0101] 43: Brightness correction amount calculation part

[0102] 44: Color correction amount calculation section

[0103] 45: Color change amount calculation section

[0104] 46: Chewing ability determination result image preparation section.

Claims

1. A method for measuring chewing ability by using chewing-type inspection gum, the method comprising the following steps: Place the chewed chewing type inspection gum on a dedicated holder provided with a chromaticity reference color; Take a picture of the dedicated holder with the chewing type inspection gum placed thereon by a camera, and form an image including both the image of the chromaticity reference color and the image of the chewing type inspection gum; Compare the chromaticity reference color image included in the formed image with the chromaticity reference color set on the dedicated holder to calculate the color correction amount of the chromaticity reference color image included in the formed image; Apply the calculated color correction amount to the color of the chewing type inspection gum image included in the formed image to detect the true color of the chewing type inspection gum placed on the dedicated holder; And Compare the detected true color of the chewing type inspection gum with the color of the pre-registered unchewed chewing type inspection gum, and calculate the amount of color change of the gum due to chewing.

2. A method for measuring chewing ability by using chewing-type inspection gum, the method comprising the following steps: Place the chewed chewing type inspection gum on a dedicated holder provided with a chromaticity reference color; Take a picture of the dedicated holder with the chewing type inspection gum placed thereon by a camera, and form an image including both the image of the chromaticity reference color and the image of the chewing type inspection gum; Compare the chromaticity reference color image included in the formed image with the chromaticity reference color set on the dedicated holder to calculate the color correction amount of the chromaticity reference color image included in the formed image; Apply the calculated color correction amount to the color of the chewing type inspection gum image included in the formed image to detect the true color of the chewing type inspection gum placed on the dedicated holder; And Apply the detected true color of the chewing type inspection gum to a pre-stored chewing ability determination color scale to determine the chewing ability of the person who has chewed the chewing type inspection gum, and output the chewing ability of the person.

3. The method for measuring chewing ability according to claim 1 or 2, wherein, The dedicated holder includes a single illuminance determination reference color provided near the chromaticity reference color thereon, wherein the step of calculating the color correction amount of the chromaticity reference color image includes: a step of correcting the illuminance non-uniformity of the chromaticity reference color based on the luminance of the single illuminance determination reference color.

4. The method for measuring chewing ability according to claim 3, wherein, The single illuminance determination reference color set on the dedicated holder includes gray.

5. The method for measuring chewing ability according to claim 1 or 2, wherein, The dedicated holder includes position detection marks provided thereon, The method includes the following steps: detecting the chromaticity reference color image and the chewing type inspection gum image in the image formed by taking a picture of the dedicated holder by using the camera based on the image of the position detection marks.

6. A chewing ability confirmation system for detecting chewing ability by using chewing-type inspection gum, the system comprising: A camera that takes pictures of a dedicated holder provided with a chromaticity reference color, wherein the chewed chewing type inspection gum is placed at a predetermined position on the dedicated holder; A specific image extraction device that extracts the image of the chromaticity reference color and the image of the chewing type inspection gum from the image formed by taking a picture of the dedicated holder by using the camera; A correction amount calculation device that compares the chromaticity reference color image extracted by the specific image extraction device with the chromaticity reference color set on the dedicated holder to calculate the amount of color correction performed on the chromaticity reference color image; A color detection device that corrects the color of the chewing type inspection gum image extracted by the specific image extraction device by applying the color correction amount calculated by the correction amount calculation device to the color of the chewing type inspection gum image, so as to detect the true color of the chewing type inspection gum placed on the dedicated bracket; And An output device that applies the true color of the chewing type inspection gum detected by the color detection device to a pre-stored chewing ability determination color scale, thereby determining the chewing ability of a person who has chewed the chewing type inspection gum, and outputting the chewing ability of the person.

7. The chewing ability confirmation system according to claim 6, wherein, The dedicated bracket includes position detection marks provided thereon for identifying the position of the image to be extracted, wherein the specific image extraction device identifies the positions of the chromaticity reference color image and the chewing type inspection gum image to be extracted based on the images of the position detection marks in the image formed by photographing the dedicated bracket using the camera, and extracts the images of the identified positions.

8. The chewing ability confirmation system according to claim 6 or 7, comprising an information processing terminal having a camera function, wherein, The camera is embodied by the camera function of the information processing terminal, wherein the specific image extraction device, the correction amount calculation device, the color detection device, and the output device are embodied by programs installed in the information processing terminal.

9. The chewing ability confirmation system according to claim 6 or 7, comprising a server and an information processing terminal with a camera function, wherein, The camera is embodied by the camera function of the information processing terminal, wherein the specific image extraction device, the correction amount calculation device, the color detection device, and the output device are embodied by programs installed in the server.

10. A special bracket for measuring chewing ability by using a chewing type inspection gum, the special bracket comprising: A pre-defined area on the surface of the bracket, which serves as the position for placing the chewed chewing type inspection gum; The chromaticity reference color, printed at a position on the surface of the bracket different from the pre-defined area; And Position detection marks, which are provided for identifying the pre-defined area associated with the position where the chromaticity reference color is printed on the bracket.

11. The special bracket according to claim 10, further comprising gray printed around the chromaticity reference color printed on the bracket.

12. The special bracket according to claim 10 or 11, comprising a sheet of paper, plastic or metal.

13. The special bracket according to claim 11, wherein, The chromaticity reference color, the position detection marks, and the gray are set in a surface area closer to one edge of the bracket, and the position for placing the chewing type inspection gum is set in a surface area of the bracket other than the area closer to the one edge.

Images