WO2022176536A1

WO2022176536A1 - Electric shaver

Info

Publication number: WO2022176536A1
Application number: PCT/JP2022/002790
Authority: WO
Inventors: 芳彰金森
Original assignee: パナソニックＩｐマネジメント株式会社
Priority date: 2021-02-16
Filing date: 2022-01-26
Publication date: 2022-08-25
Also published as: EP4296020A1; EP4296020A4; JP2022124522A; CN116802029A

Abstract

The present disclosure provides an electric shave that suppresses damage to the skin during shaving. An electric shaver (100), according to the present disclosure, comprises: a first imaging device (131) which images the vicinity of skin abutted by a shaving part (121); an image processing device which processes an mage obtained from the first imaging device (131); and a notification device (140) that notifies a user about a processing result. The image processing device comprises: a property information generation unit which generates, on the basis of the acquired image, property information indicating at least one property selected from the group consisting of hair and skin; a shaving information generation unit which generates, on the basis of property information, shaving information pertaining to shaving; and a result notification unit which controls the notification device (140) so as to notify the user about shaving information.

Description

electric razor

The present disclosure relates to an electric razor for cutting body hair such as beard.

Conventionally, an imaging device records an image of a user's body part, a local hair growth direction is determined based on the captured image, and a shaving device is moved on the body according to the determined hair growth direction. A shaving guidance system has been proposed that instructs the user in which direction to shave and where to shave (see, for example, Japanese Laid-Open Patent Application Publication No. 2002-100001).

Japanese Patent Publication No. 2016-534806

However, conventional systems can only recognize the direction and location of shaving, and cannot indicate the optimal shaving condition that reduces damage to the skin.

The present disclosure has been made in view of the above problems, and aims to provide an electric shaver that can notify the user of an instruction for suppressing damage to the skin.

To achieve the above object, an electric shaver according to one aspect of the present disclosure includes a grip portion gripped by a user; a head portion having a shaving portion for cutting body hair and connected to one end of the grip portion; comprising: a first imaging device for imaging the vicinity of the skin with which the shaving portion abuts; an image processing device for processing the image obtained from the first imaging device; and processing of the image processing device and a notification device for notifying the user of the result, wherein the image processing device includes a property information generation unit that generates property information indicating at least one property selected from the group consisting of body hair and skin based on the acquired image. , a shaving information generating unit that generates shaving information related to shaving based on the property information, and a result notification unit that controls the notification device and notifies the user of the shaving information.

According to the electric shaver of the present disclosure, it is possible to present the user with a shaving state that suppresses damage to the skin during shaving.

FIG. 1 is a perspective view showing an electric shaver according to an embodiment. FIG. 2 is a perspective view showing the head section according to the embodiment. FIG. 3 is a block diagram showing functional units of the image processing apparatus according to the embodiment.

An embodiment of an electric shaver according to the present disclosure will be described below with reference to the drawings. It should be noted that the following embodiments are examples for explaining the present disclosure, and are not intended to limit the present disclosure. For example, the shapes, structures, materials, constituent elements, relative positional relationships, connection states, numerical values, formulas, contents of each step in the method, order of each step, etc. shown in the following embodiments are examples, and are described below. may include content not listed in In addition, geometric expressions such as parallel and orthogonal are sometimes used, but these expressions do not indicate mathematical rigor, and substantially allowable errors, deviations, and the like are included. Expressions such as "simultaneous" and "identical" also include substantially permissible ranges.

In addition, the drawings are schematic diagrams that are appropriately emphasized, omitted, or adjusted in proportion to explain the present disclosure, and differ from the actual shape, positional relationship, and proportion.

Also, below, multiple technical ideas may be comprehensively explained as one embodiment. Also, some of the content described below is described as an optional component with respect to this disclosure.

FIG. 1 is a perspective view showing an electric shaver 100 according to an embodiment. FIG. 2 is a perspective view showing the head portion 120 of the electric shaver 100. As shown in FIG. In the electric shaver 100, the edges are chamfered, and there are portions provided with anti-slip unevenness, but these are omitted from the drawing.

The electric shaver 100 is a device that cuts and removes body hair such as a beard using an electric blade. 150 (not shown in FIGS. 1 and 2). In the case of this embodiment, the electric shaver 100 further includes a second imaging device 132 .

The grip part 110 is the part that the user grips when using the electric shaver 100 . In the case of the present embodiment, grip unit 110 functions as a housing that accommodates image processing device 150, a control device that controls driving of shaving blades, a battery, and the like. A power switch 111 for turning on/off the power, an input button 112 for receiving input from the user, and the like are provided on the outer surface of the grip portion 110 .

The head part 120 is a member that has a shaving part 121 with a blade for cutting body hair and is connected to one end of the grip part 110 . In the case of this embodiment, the head portion 120 is connected to the grip portion 110 so as to be relatively operable. The direction of movement of the head portion 120 is not particularly limited, but the head portion 120 can be moved in the front-rear direction (the X-axis direction in the figure), the width direction Y (the Y-axis direction in the figure), and the vertical direction (the Z-axis direction in the figure). direction) can be swung in the circumferential direction about the axis.

The shaving portion 121 includes a plurality of first outer cutters 122 (four in the present embodiment) extending in the width direction and having a semi-cylindrical mesh-like through hole. A second outer cutter 123 having a slit-like through hole arranged between 122 is provided. The first outer cutter 122 and the second outer cutter 123 are attached to the head frame 124 , and the shaving portion 121 is detachable from the head base 125 .

Inside the head portion 120, a first inner cutter (not shown) provided corresponding to the first outer cutter 122 and a second inner cutter (not illustrated) provided corresponding to the second outer cutter 123 are arranged. An inner cutter driving device is provided for reciprocatingly vibrating the first inner cutter and the second inner cutter in the width direction (the Y-axis direction in the drawing). By vibrating the first inner cutter and the second inner cutter with the inner cutter driving device, the hair inserted into the through holes of the first outer cutter 122 and the second outer cutter 123 vibrates the first inner cutter and the second inner cutter. Cut between the inner blades.

The first imaging device 131 is a device that takes an image of the vicinity of the skin with which the shaving part 121 abuts. In the case of the present embodiment, the first imaging device 131 has the first outer blade 122, which is an outer blade, in the front-rear direction (the X-axis direction in the figure) in a state in which the shaving portion 121 is in contact with the skin, and A skin having a length corresponding to the entire second outer cutter 123, and a skin having a length corresponding to the entire width (Y-axis direction in the figure) of the first outer cutter 122 in the width direction (the Y-axis direction in the figure). It has an angle of view that can be captured in one shot. As a result, it is possible to accurately image the state of body hair and skin immediately before and after shaving.

The type of the imaging device 131 is not particularly limited, and for example, a so-called digital camera having an optical system including a lens and an imaging device that converts an image formed by the optical system into an electric signal can be exemplified. can.

The first imaging device 131 of the present embodiment is fixed to the head substrate 125 of the head section 120 , and the first imaging device 131 operates together with the movement of the head section 120 with respect to the grip section 110 . As a result, the distance between the skin and the first imaging device 131 can be stabilized even during shaving with the electric shaver 100, and a clearer image can be captured. Specifically, as shown in FIG. 2, the first imaging device 131 is attached to a substrate 133 projecting forward from the front side (X− side in the drawing) of the head substrate 125 . According to this, when the head frame 124 is attached and detached, the first imaging device 131 does not become an obstacle, which is preferable. The substrate 133 is also provided with a lighting device 135 such as a light-emitting diode (generally called an “LED”) that illuminates the skin within the angle of view of the first imaging device 131 . The substrate 133, the first imaging device 131, and the illumination device 135 are covered with a cover 134 (see FIG. 1).

As shown in FIG. 1, the second imaging device 132 is a device that captures an image of a wider area than the first imaging device 131 when the shaving portion 121 is in contact with the skin. The second imaging device 132 of the present embodiment is fixed to the end of the grip section 110 on the side opposite to the head section 120, and when the shaving section 121 is in contact with the skin, for example, one cheek It has an angle of view that can capture the entire image. This makes it possible to accurately grasp the condition of the skin immediately after shaving.

The notification device 140 is a device that notifies the user of the processing result of the image processing device 150 . The notification method of the notification device 140 is not particularly limited, and can be exemplified by a method of notification using sound (including voice), light, vibration, electrical stimulation, a combination thereof, and the like. In the case of the present embodiment, the notification device 140 is a device that notifies information by light, and has a plurality of light emitting elements such as LEDs arranged side by side along the periphery of the end portion of the grip portion 110 on the side of the head portion 120 . The notification device 140 can change at least one of brightness, color, and emission pattern of light. A specific method of notifying the shaving information will be described later.

FIG. 3 is a block diagram showing functional units of the image processing device 150. As shown in FIG. The image processing device 150 is a device for processing images obtained from the first imaging device 131 and the second imaging device 132, and includes a property information generation unit 151 as a processing unit realized by causing a processor to execute a program, A shaving information generation unit 152 and a result notification unit 153 are provided. In the case of this embodiment, the image processing apparatus 150 further includes an information acquisition section 154 , an unshave information generation section 155 and an area designation section 156 .

The information acquisition unit 154 is a processing unit that acquires information such as images captured by the first imaging device 131 . In the case of the present embodiment, the information acquisition unit 154 also acquires an image captured by the second imaging device 132 and input information input by the user using the input button 112 or the like.

The property information generation unit 151 generates property information indicating the property of body hair or skin based on the image acquired by the information acquisition unit 154 from the first imaging device 131 . The property information is, for example, information including at least one of hair length, hair density, scales on the skin, and skin color.

An example in which the property information generating unit 151 generates property information indicating the length of body hair will be described. The property information generation unit 151 performs a process of enhancing contrast on the image of the skin including body hair acquired by the information acquisition unit 154 . For example, the property information generation unit 151 increases the luminance contrast by performing tone conversion on the luminance of each pixel of the image so as to increase the change in the output tone with respect to the input tone. By applying a low-pass filter to the image before or after this contrast enhancement, fine noise such as irregularities of the skin may be removed.

Next, the property information generation unit 151 performs contour extraction on the contrast-enhanced image. More specifically, the property information generator 151 performs binarization (that is, whitening/blackening) by outputting a white pixel when the luminance difference with the surrounding pixels is equal to or greater than a threshold, and outputting a black pixel when the luminance difference is less than the threshold. After that, expansion and contraction processing is performed to remove fine noise. Note that the expansion/contraction processing is the expansion processing that replaces the target pixel with white if even one white pixel exists around the target pixel, and the target pixel if there is even one black pixel around the target pixel. It is a contraction process that replaces the color with black. This contour extraction provides an image showing the contours of individual hairs.

Next, the property information generation unit 151 calculates a circumscribing rectangle for each contour-extracted region. Specifically, the property information generator 151 calculates a circumscribing rectangle for each contour-extracted region such that the contour of the rectangle is in contact with the region corresponding to the extracted body hair. However, the method for calculating the circumscribing rectangle is not limited to this method, and other methods may be used as long as a rectangle covering the outline of the hair can be calculated for estimating the length of the hair. By the above processing, an image showing rectangles circumscribing regions corresponding to individual body hairs is obtained.

(body hair length)
Next, the property information generation unit 151 specifies the length of each hair by calculating the length of the long side of each calculated circumscribing rectangle. Regarding the specification of the length of the long side, the length of two orthogonal sides in a right-angled triangle including the two sides along the orthogonal direction in which the pixels are arranged (here, the length of one side is the number of pixels × given by the pixel interval) is calculated, and the length of the long side, which is the hypotenuse, is calculated using the Pythagorean theorem.

In this way, the length of each body hair is specified from the image captured by the first imaging device 131. Furthermore, the property information generation unit 151 statistically processes the lengths of the plurality of hairs included in the image, and generates information representing the lengths of the plurality of hairs in one image as digitized property information. .

(Body hair density)
An example in which the property information generation unit 151 generates property information indicating the density of body hair will be described. The procedure is the same as above until the property information generation unit 151 generates an image showing the outline of each body hair.

Next, the property information generation unit 151 calculates the area of each area whose outline has been extracted, and calculates the total area of each area in the image. Furthermore, the property information generation unit 151 generates the ratio of the total area of the rectangular regions to the area of the image as quantified property information indicating the density of body hair.

(Density of scaly matter)
An example of the case where the property information generation unit 151 generates property information indicating the density of scales, which is one of skin properties, will be described. The property information generation unit 151 extracts the outline of white scales from the skin image including body hair acquired by the information acquisition unit 154 . Extraction of scale contours may be performed by a black-and-white reversed method of extracting hair contours.

Next, the property information generation unit 151 calculates the area of each white region whose outline is extracted, and calculates the total area of each region in the image. Furthermore, the property information generation unit 151 generates the ratio of the total area of the rectangular regions to the area of the image as quantified property information indicating the density of scales.

(skin color)
An example in which the property information generating unit 151 generates property information indicating skin color will be described. The property information generating unit 151 excludes the hair portion from the image of the skin including the body hair acquired by the information acquiring unit 154, statistically processes the information regarding the color of each remaining pixel, and extracts the portion corresponding to the body hair. A skin color representative of colors indicated by a plurality of pixels in an image is generated as quantified property information.

The shaving information generation unit 152 generates shaving information related to shaving based on the property information generated by the property information generation unit 151 . The shaving information is information including at least one of excessive pressure, excessive speed, and end of shaving. The shaving information generation unit 152 may generate shaving information indicating the end of shaving, for example, when the property information indicating the body hair length is equal to or less than the length threshold. Further, the shaving information generation unit 152 may generate shaving information indicating the end of shaving when the property information indicating the shaving density becomes equal to or less than the shaving density threshold. In addition, the shaving information generation unit 152 may generate shaving information indicating excessive shaving when the property information indicating the density of the scaly matter is equal to or higher than the scaly density threshold.

In the case of the present embodiment, the shaving information generation unit 152 may generate shaving information by performing a threshold judgment on the difference between a plurality of pieces of property information obtained from a plurality of images. For example, the color difference of the skin color is calculated as a color difference threshold based on the property information indicating the skin color based on the image before the shaving unit 121 presses the skin and the property information indicating the skin color based on the image when the shaving unit 121 presses the skin. is used to generate shaving information indicating excessive pressing. For example, when the red component of the skin color has a value indicating white over the color difference threshold, the shaving information generation unit 152 generates shaving information indicating excessive pressure. Further, the shaving information generation unit 152 calculates a motion vector focusing on at least one selected from the group consisting of body hair and skin texture from images captured at predetermined intervals, and the velocity obtained from the motion vector is the velocity. If it is equal to or greater than the threshold, excessive speed shaving information may be generated. In addition, the shaving information generation unit 152 calculates a blurring width (for example, a blurring width of body hair, a blurring width of skin texture, etc.) from one image captured at a predetermined shutter speed (that is, exposure time). If the speed obtained from the shutter speed and blur width is equal to or greater than the speed threshold, excessive speed shaving information may be generated.

Further, in the case of the present embodiment, the shaving information generation unit 152 generates shaving information corresponding to the input information input by the user using the input button 112 or the like. For example, the image processing device 150 holds multiple stages of length threshold values, and the shaving information generation unit 152 selects the length threshold value according to the input information. The shaving information generation unit 152 can change the length of body hair for generating shaving information indicating the end of shaving by using the selected length threshold, and adjusts the finished length of shaving. becomes possible. Specifically, if you want to reduce the burden on the skin, select a relatively long length threshold, and if you want to give priority to deep warping, select a relatively short length threshold. You can choose.

Further, the shaving information generation unit 152 holds a plurality of thresholds having different values, such as a first length threshold that is 20% longer than the length threshold and a second length threshold that is 40% longer than the length threshold. Stepwise increasing or decreasing shaving information, such as shaving information according to length stages, may be generated.

After generating the shaving information indicating the end of shaving when the property information becomes equal to or less than the length threshold value, equal to or less than the shaved hair density threshold value, or equal to or more than the scale density threshold value, the shaving information generation unit 152 uses the newly generated property information. Furthermore, when shaving information indicating the end of shaving is generated, shaving information indicating excessive shaving may be generated.

The result notification unit 153 controls the notification device 140 to notify the user of the shaving information generated by the shaving information generation unit 152 . For example, the result notification unit 153 notifies the user of the shaving information by controlling the light emitted by the light emitting device included in the notification device 140 to change at least one of brightness, color, and light emission pattern. When the body hair length is long, control is performed to emit red light to inform the user that shaving is not completed, and control to emit blue light when shaving information indicating completion of shaving is acquired from the shaving information generation unit 152. to notify the end of shaving. Furthermore, when the user is shaving an area where there is body hair that is equal to or less than the length threshold, for example, if the user is shaving, for example, the flashing state or lighting state of another color (such as green), or the flashing state of blue. In addition, the notification device 140 may be controlled to notify excessive shaving.

Further, when the shaving information generation unit 152 is generating shaving information that increases or decreases stepwise, the result notification unit 153 controls the light emitted by the light emitting device to control the brightness, color, and light emission. Stepwise shaving information may be notified to the user by changing at least one of the patterns stepwise. For example, the intensity of light may be stepwise increased or decreased, or the flashing interval of light emission may be lengthened or shortened.

The unshaving information generation unit 155 generates unshave information indicating an area where shaving is not performed based on the image obtained from the second imaging device 132 . For example, at the initial stage of shaving areas such as the cheek area on one side, the chin area, and the under-nose area, or at the stage immediately before that, the unshave information generation unit 155 acquires an initial image of the area, and then obtains a predetermined image. Acquire images at intervals. The unshaving information generation unit 155 compares the initial image and subsequent images, and estimates the location where the shaved part 121 of the electric shaver 100 is in contact with the skin as a processed area. The unshaving information generation unit 155 generates unshave information indicating at least a partial area of the area that is adjacent to the area that the shaving part 121 is actually in contact with and that is not estimated as a processed area. to generate It should be noted that the unshaving hair information generation unit 155 may also process the image obtained from the first imaging device 131 and estimate a processed area or an unshaving area.

The area designating unit 156 controls the notification device 140 based on the unshaving information generated by the unshaving information generating unit 155 to instruct the user about the unshaving area. For example, in the case of the present embodiment, notification device 140 has light-emitting elements at eight locations on the front, rear, left, and right of grip portion 110 and in the middle thereof. After the result notification unit 153 controls the notification device 140 to notify the shaving information indicating the end of shaving, the area designating unit 156 emits light emitted at a position corresponding to the direction in which the unshaving area exists. The element is caused to emit light by controlling the notification device 140 . Based on the light emission of the notification device 140, the user can recognize that the current shaving process has been completed, and can recognize the next shaving process location. As described above, it is possible to suppress excessive shaving and efficiently perform the overall shaving.

According to the electric shaver 100 according to the above-described embodiment, it is possible to extract information about the body hair or skin surface from the image obtained by the first imaging device 131 and notify the user of shaving information about shaving. . Therefore, the user can perform shaving while recognizing the strength with which the electric shaver 100 is pressed against the skin, the speed with which the electric shaver 100 moves against the skin, and the completion of shaving in a predetermined area. It is possible to suppress damage to the skin and efficiently proceed with the shaving work.

Also, by generating shaving information corresponding to the input information input by the user, it is possible to select the shaving state that the user prefers. For example, the electric shaver 100 can be changed to a mode according to the preference of the user, such as determining the length of the body hair after shaving or determining the weight of the burden on the skin.

In addition, by providing the notification device 140 with a light-emitting element, it is possible to easily notify the user of a plurality of pieces of shaving information by changing the brightness, color, and light emission pattern of the light.

In addition, by using the difference in property information obtained from a plurality of images taken at different times, it is possible to generate shaving information based on changes in the state of body hair and skin, thereby allowing the user to perform accurate shaving. Hair information can be notified.

In addition, the image from the second imaging device 132 with a relatively wide angle of view allows the user to distinguish and recognize the unprocessed area from the processed area, and navigate the user to the next area to be shaved. can do. As a result, a wide area can be shaved efficiently, and damage to the skin can be suppressed.

It should be noted that the present disclosure is not limited to the above embodiments. For example, another embodiment realized by arbitrarily combining the constituent elements described in this specification or omitting some of the constituent elements may be an embodiment of the present disclosure. In addition, the present disclosure includes modifications obtained by making various modifications that a person skilled in the art can think of without departing from the gist of the present disclosure, that is, the meaning indicated by the words described in the claims, with respect to the above-described embodiment. be

For example, the notification device 140 having a light emitting element is illustrated, but the notification device 140 includes a sounding device such as a speaker, a vibrating device that generates vibration in the grip portion 110, and an electrical stimulus to the hand that grips the grip portion 110. An electrical muscle stimulator or the like to apply may be provided. Such notification device 140 can notify shaving information by changing the intensity, generation pattern, or direction of sound (including voice), vibration, or electrical stimulation.

Also, the property information generation unit 151 may generate the direction of body hair as one of the property information. Specifically, as in the above embodiment, the image of the hair surrounded by the circumscribing rectangle has a grayscale gradation from white to black toward the tip at the root of the hair, and at the tip of the hair, A large luminance difference is generated between the outline of the body hair and the skin. In other words, unlike the tips, the hair roots are embedded under the skin, so the contrast between the body hair and the skin is reduced. The property information generation unit 151 identifies the direction of the hair using at least one of the characteristics of the image near the hair root including the root of the hair and the characteristics of the image near the tip including the tip of the hair root.

Also, the property information generation unit 151 may identify the direction of the hair using the circumscribed rectangle of the hair. The term "orientation of body hair" may refer to either the direction from the hair root to the tip or the direction from the tip to the hair root.

The result notification unit 153 may notify the direction in which the electric shaver 100 should be operated based on the property information indicating the direction of the body hair.

In the above embodiment, the shaving portion 121 is provided with a total of five outer cutters, four first outer cutters 122 and one second outer cutter 123, but the number of outer cutters is not particularly limited. Instead, the shaving portion 121 may have four or less, or six or more outer blades.

Alternatively, it may be the shaving portion 121 that shaves by rotating the inner blade with respect to the outer blade.

In addition, the mounting position of the first imaging device 131 is not limited to the above-described embodiment. I don't care if it happens. Alternatively, it may be attached to the grip portion 110 . The number of first imaging devices 131 is also not limited to one, and may be installed at multiple locations.

The present disclosure can be applied to electric shavers that can shave body hair of animals including humans, such as so-called electric shavers for shaving beards and so-called hair clippers for shaving hair.

The technical ideas derived from this disclosure are described below.

An electric shaver derived from the present disclosure comprises a grip portion gripped by a user, and a head portion having a shaving portion for cutting body hair and connected to one end of the grip portion,
The electric shaver is
a first imaging device for imaging the vicinity of the skin with which the shaving portion abuts;
an image processing device that processes an image obtained from the first imaging device;
a notification device that notifies a user of the processing result of the image processing device;
The image processing device is
a property information generating unit that generates property information indicating at least one property selected from the group consisting of body hair and skin based on the acquired image;
a shaving information generation unit that generates shaving information related to shaving based on the property information;
and a result reporting unit that controls the reporting device to report the shaving information to the user.

In other words, an electric shaver derived from the present disclosure:
a gripping portion to be gripped by a user;
a head portion having a shaving portion for cutting body hair and connected to one end of the grip portion;
a first imaging device for imaging the vicinity of the skin with which the shaving portion abuts;
a notification device;
comprising an electrical and electronic circuit and
The electrical and electronic circuit, during operation,
processing an image obtained from the first imaging device;
generating property information indicating at least one property selected from the group consisting of body hair and skin based on the acquired image;
generating shaving information related to shaving based on the property information;
The notification device is controlled to notify the user of the shaving information.

Examples of electrical and electronic circuits are semiconductor devices such as integrated circuits (commonly called "ICs") or large-scale integrated circuits (commonly called "LSIs").

100 Electric shaver 110 Grip portion 111 Power switch 112 Input button 120 Head portion 121 Shaving portion 122 First outer blade 123 Second outer blade 124 Head frame 125 Head substrate 131 First imaging device 132 Second imaging device 133 Substrate 134 Cover 135 lighting device 140 notification device 150 image processing device 151 property information generation unit 152 shaved hair information generation unit 153 result notification unit 154 information acquisition unit 155 unshave information generation unit 156 region designation unit

Claims

An electric razor comprising: a grip portion gripped by a user; and a head portion having a shaving portion for cutting body hair and connected to one end of the grip portion,
a first imaging device for imaging the vicinity of the skin with which the shaving portion abuts;
an image processing device that processes an image obtained from the first imaging device;
a notification device that notifies a user of the processing result of the image processing device;
The image processing device is
a property information generating unit that generates property information indicating at least one property selected from the group consisting of body hair and skin based on the acquired image;
a shaving information generation unit that generates shaving information related to shaving based on the property information;
and a result notification unit that controls the notification device to notify the user of the shaving information.
The property information is
2. The electric shaver according to claim 1, comprising at least one selected from the group consisting of hair length, hair density, scale density, and skin color.
The shaving information includes:
3. The electric shaver according to claim 1 or 2, comprising at least one selected from the group consisting of over-pressing, over-velocity, and end of shaving.
The image processing device is
An information acquisition unit that acquires input information entered by a user,
The shaving information generation unit
The electric shaver according to any one of claims 1 to 3, wherein the shaving information corresponding to the input information is generated.
The notification device is
A device that notifies information by light,
The result notification unit
5. The user is notified of the shaving information by controlling the notification device to change at least one selected from the group consisting of brightness, color, and light emission pattern. The electric shaver described in .
The property information generation unit is
generating the numerical property information of the plurality of images based on the plurality of images;
The shaving information generation unit
6. The electric shaver according to any one of claims 1 to 5, wherein the shaving information is generated by determining a difference between the plurality of pieces of property information based on a threshold value.
The property information generation unit is
generating the property information indicating skin color;
The shaving information generation unit
7. The electric shaver according to claim 6, wherein the shaving information indicative of over-pressing is generated by judging skin color differences based on a threshold value.
Further comprising a second imaging device that images a wider area than the first imaging device,
The image processing device is
an unshaving information generating unit that generates unshaving information indicating an area where shaving is not performed based on an image obtained from the second imaging device;
The electric shaver according to any one of claims 1 to 7, further comprising an area indication unit that controls the notification device based on the unshaving information to indicate an unshaved area to the user.
the head portion is operably coupled relative to the grip portion;
The electric shaver according to any one of claims 1 to 8, wherein the first imaging device is fixed to the head section.
The first imaging device is
10. The electric shaver according to any one of claims 1 to 9, wherein the electric shaver has an angle of view for imaging the entire width direction of the skin with which the shaving portion contacts at once.