JP6152938B2 - Electronic mirror device - Google Patents

Description

  The present disclosure relates to an electronic mirror device.

  A so-called electronic mirror device has been proposed in which an image captured by a camera is displayed on a display and used as a mirror, and is proposed to be used as an application of a portable terminal (for example, Patent Document 1).

  In the electronic mirror device, a mirror image of the captured image is displayed on the display, so that the user can use it with the same feeling as an ordinary mirror that reflects light.

Utility Model Registration No. 3154529

  The present disclosure provides an electronic mirror device with improved user-friendliness.

  An electronic mirror device according to an aspect of the present disclosure is an electronic mirror device that images a user's face and displays a mirror image of the user's face, and images the user's face via a first polarizing filter. A camera, a polarization illumination device that irradiates the user's face with polarized light via the second polarizing filter, and a display that displays a mirror image of the user's face captured by the camera, the camera and the display being adjacent to each other Are arranged.

  According to the electronic mirror device according to an aspect of the present disclosure, it is possible to obtain image data suitable for skin measurement of the user's face.

It is a figure which shows the electronic mirror apparatus which concerns on embodiment. (A) is a figure which shows the electronic mirror apparatus which concerns on embodiment, (b) is a figure which shows the structure of the control apparatus which concerns on embodiment, (c) is the figure which shows the structure of the cloud server which concerns on embodiment. It is. It is a figure which shows the information displayed on the display which concerns on embodiment. It is a figure which shows the electronic mirror apparatus which concerns on embodiment. It is a figure which shows the electronic mirror apparatus which concerns on embodiment. It is a figure which shows the electronic mirror apparatus which concerns on embodiment. It is a figure which shows the electronic mirror apparatus which concerns on embodiment. It is a figure which shows the electronic mirror apparatus which concerns on embodiment. (A) And (b) is a figure which shows the electronic mirror apparatus which concerns on embodiment. (A) And (b) is a figure which shows the electronic mirror apparatus which concerns on embodiment. It is a figure which shows the electronic mirror apparatus which concerns on embodiment. (A) And (b) is a figure which shows the electronic mirror apparatus which concerns on embodiment. (A) And (b) is a figure which shows the process which correct | amends the direction of the face of the electronic mirror apparatus which concerns on embodiment. It is a figure which shows the electronic mirror apparatus which concerns on embodiment.

  The outline | summary of 1 aspect of this indication is as follows.

  An electronic mirror device according to an aspect of the present disclosure displays an image of a mirror image of a user's face, and includes a first camera that captures the user's face via a first polarizing filter; A first polarization illumination device that irradiates the user's face with polarized light via a second polarization filter; and a display that displays a mirror image of the user's face imaged by the first camera, A first camera and the display are arranged adjacent to each other.

  An electronic mirror device according to an aspect of the present disclosure is an electronic mirror device that images a user's face, and includes a first camera that images the user's face via a first polarizing filter, and a second polarization A first polarization illumination device that irradiates polarized light on the user's face through a filter; and a display of a mirror image of the user's face on the display to display the mirror image of the user's face. An interface for outputting image data to the outside, and the interface is arranged such that the first camera and the display are arranged adjacent to each other when a terminal having the display is connected via the interface. It is configured.

  For example, the first camera, the first polarized illumination device, and the display may be arranged in substantially the same plane.

  For example, the transmission polarization axis of the first polarization filter and the transmission polarization axis of the second polarization filter may be orthogonal to each other.

  For example, the first polarized illumination device irradiates the user's face with polarized light that vibrates in the direction of the second polarization axis, and the first camera includes the light reflected by the user's face, The user's face may be imaged by receiving polarized light that vibrates in a direction of a first polarization axis different from the direction of the second polarization axis.

  For example, you may further provide the skin measurement part which measures the said user's skin using the image data of the said user's face imaged with the said 1st camera.

  For example, the skin measurement unit may perform skin measurement of the user by comparing image data of the user's face with data in a cloud server.

  For example, the skin measurement unit may measure the user's skin using image data with the face orientation corrected.

  For example, a distance measuring device that measures a distance between the electronic mirror device and the user's face is further provided, and the display has a predetermined distance between the electronic mirror device and the user's face. Thus, a guide for guiding the user may be displayed.

  For example, a second camera provided with a third polarizing filter in the optical path may be further provided, and the transmission polarization axis of the first polarization filter and the transmission polarization axis of the third polarization filter may be orthogonal to each other. .

  For example, it further includes a second camera having a third polarizing filter in the optical path, and the transmission polarization axis of the first polarization filter and the transmission polarization axis of the third polarization filter are orthogonal to each other, A distance between the electronic mirror device and the user's face is measured from a first image captured by the first camera and a second image captured by the second camera, and the display is And a guide for guiding the user so that the distance between the user's face and the user's face is a predetermined distance.

  For example, the skin measurement unit may perform skin measurement using face image data obtained by imaging when the distance between the electronic mirror device and the user's face is a predetermined distance.

  For example, a polarization illumination device including a fourth polarization filter in the optical path may be further provided, and the transmission polarization axis of the second polarization filter and the transmission polarization axis of the fourth polarization filter may be orthogonal to each other.

  For example, you may further provide a non-polarization illuminating device.

  For example, the polarization illumination device may emit blue light.

  For example, the polarization illumination device may emit cyan light.

  For example, the polarized illumination device may emit white light.

  For example, the polarized illumination device may be arranged on the left and right of the camera.

  For example, the polarized illumination device may be disposed around the display.

  For example, generating first face image data obtained by imaging the polarization illumination device in an on state and second face image data obtained by imaging the polarization illumination device in an off state, The second face image may be subtracted from the first face image to generate third face image data.

  For example, when the electronic mirror device is connected to an electronic device with a built-in camera, the image of the mirror image of the user's face is displayed on the display using face image data obtained by imaging with the camera of the electronic device. Skin measurement may be performed using face image data that is displayed and captured by the camera of the electronic mirror device.

  A control method according to an aspect of the present disclosure is a control method for controlling an electronic mirror device that captures an image of a user's face and displays a mirror image of the user's face, and includes a camera via a first polarizing filter. Then, the user's face is imaged, and the illumination device irradiates the user's face with polarized light through a second polarizing filter, and a display displays a mirror image of the user's face captured by the camera.

  A control method according to an aspect of the present disclosure is a control method for controlling an electronic mirror device that captures an image of a user's face, wherein the user's face is imaged by a camera via a first polarization filter, In order to illuminate the user's face with polarized light through a polarizing filter and display a mirror image of the user's face on a display, the image data of the user's face captured by the camera is output to the outside. Let

  A computer program according to an aspect of the present disclosure is a computer program that causes an electronic mirror device to capture an image of a user's face and display a mirror image of the user's face. The user's face is imaged with a camera through a polarizing filter, the user's face is irradiated with polarized light through a second polarizing filter, and a mirror image of the user's face imaged with the camera is obtained. Display on the display.

  A computer program according to an aspect of the present disclosure is a computer program that causes an electronic device to image a user's face, and causes the computer of the electronic device to image the user's face with a camera via a first polarizing filter. The user's face image data captured by the camera to illuminate the user's face with polarized light through a second polarizing filter and display a mirror image of the user's face on a display. Is output to the outside.

  Hereinafter, an electronic mirror device according to an embodiment will be described with reference to the drawings.

(Embodiment 1)
FIG. 1 is a diagram illustrating an electronic mirror device 100 according to the first embodiment. The electronic mirror device 100 images the user's face and displays a mirror image thereof. Further, the electronic mirror device 100 evaluates the skin state based on the obtained skin image of the user's face.

  The electronic mirror device 100 includes a camera 10 that captures an image of the user's face via the first polarizing filter 11, a polarization illumination device 20 that irradiates the user's face with polarized light via the second polarizing filter 21, and the camera 10. And a display 30 for displaying an image of a mirror image of the user's face imaged in FIG. The mirror image is an image obtained by reversing the image captured by the camera 10 from left to right.

  The camera 10 and the display 30 are disposed adjacent to each other. Specifically, the adjacent arrangement means that a display is present at a position where a user who takes an image with the camera 10 can visually check the mirror image at the time of shooting. In the present embodiment, the camera 10, the polarized illumination device 20, and the display 30 are arranged on substantially the same plane in the xz plane. The display 30 may include a touch panel that accepts a user's touch operation. In the example of FIG. 1, the polarization illumination devices 20 are arranged on the left and right of the camera 10.

  FIG. 2A is a diagram illustrating the electronic mirror device 100 that displays a mirror image 51 of the face of the user 50. FIG. 2B is a diagram illustrating a configuration of the control device 40 included in the electronic mirror device 100. The control device 40 includes a microcomputer 40A, a memory 40B, and a communication unit 40C. The microcomputer 40A controls the entire operation of the electronic mirror device 100 including the operations described below. Further, the microcomputer 40A executes various processes described below such as an image process and a skin measurement process. For example, a computer program for controlling each operation of the electronic mirror device 100 is stored in the memory 40B, and the microcomputer 40A controls the operation of each component of the electronic mirror device 100 according to the computer program, Various processes such as image processing and skin measurement processing are executed. As described above, the microcomputer 40A also functions as a skin measurement unit that measures the user's skin using the image data of the user's face captured by the camera 10.

  The communication unit 40C of the control device 40 may be connected to the cloud server 200 of a service provider that provides services related to skin analysis and evaluation via the communication network 210. In this case, the communication unit 40C transmits the captured image, the image feature index, the skin evaluation value, and the like to the cloud server 200. Although the communication network 210 is illustrated as being wired, it may be wireless. In FIG. 2A, only one electronic mirror device 100 is shown, but the cloud server 200 can be connected to a plurality of electronic mirror devices 100. The skin measurement process may be performed by the electronic mirror device 100 or the cloud server 200.

  FIG. 2C is a diagram illustrating the configuration of the cloud server 200. The cloud server 200 includes a microcomputer 200A, a memory 200B, a communication unit 200C, and a database 200D. The communication unit 200 </ b> C of the cloud server 200 receives user information, a captured image, an image feature index, a skin evaluation value, and the like from the plurality of electronic mirror devices 100. The cloud server 200 stores each data received from the plurality of electronic mirror devices 100, generates statistical data, and obtains a correlation between the data. Further, the statistical data and the correlation are transmitted to each electronic mirror device 100 via the communication unit 200C.

  Next, the operation of the electronic mirror device 100 will be described in more detail.

  The camera 10 includes an imaging lens and an image sensor, captures a subject image, and generates image data. In this example, the face of the user 50 is imaged and image data of the face of the user 50 is generated. The microcomputer 40 </ b> A generates image data of a mirror image of the face of the user 50 based on the captured image data of the face of the user 50 and outputs the image data to the display 30. The display 30 displays a mirror-image face image 51 that is reversed left and right. The image displayed on the display 30 is a moving image, but may be a still image. By displaying the mirror image reversed left and right on the display 30, the user can use the electronic mirror device 100 with the same feeling as an ordinary mirror that reflects light.

  In the example of the electronic mirror device 100 shown in FIG. 1, the transmission polarization axis of the first polarization filter of the camera 10 and the transmission polarization axis of the second polarization filter 21 of the polarization illumination device 20 are orthogonal to each other. For example, a white LED is used as the light source of the polarization illumination device 20. When the skin condition is evaluated, the polarization illumination device 20 including the second polarizing filter 21 irradiates the face of the user 50 with polarized light that vibrates in the direction of the second polarization axis. A part of the light reflected by the face of the user 50 enters the camera 10 having the first polarizing filter 11, and the camera 10 mainly receives the polarized light oscillating in the direction of the first polarization axis. Take a picture of the face.

  The microcomputer 200A extracts a skin region from the image data of the user's face, and calculates one or more feature indices indicating the characteristics of the skin region. The characteristic index is, for example, a skin stain or a skin color.

  The light that reaches the face skin includes a reflected component and a absorbed component, and the camera 10 images the reflected component light. The light reflected by the face skin includes a component that is reflected from the surface of the face skin and a component that enters the inside of the face skin and repeats scattering and then exits from a position different from the incident position.

  The light reflected from the surface of the face skin is further divided into a specular reflection component and a diffuse reflection component. The component that is specularly reflected by the face skin is in a state in which the polarization is maintained. Further, the component that diffusely reflects on the face skin and the component that enters the inside of the face skin and exits from different positions are in a non-polarized state in which the polarization state is disturbed.

  Since the first polarizing filter 11 of the camera 10 has a polarization axis that is orthogonal to the polarization axis of the second polarizing filter 21 of the polarization illumination device 20, most of the component of the light that is specularly reflected by the face skin. Cut. The light diffusely reflected on the surface of the face skin and the light that enters the face skin and exits from different positions are unpolarized, but the first polarizing filter 11 of the camera 10 Among the components, the component of light that vibrates in the direction of the first polarization axis is transmitted. That is, the image information captured by the light transmitted through the first polarizing filter 11 has a light component diffusely reflected on the face skin surface and a light component that enters the face skin and exits from different positions. ing.

  The inside of the face skin mentioned above is an epidermis region, and melanin is generated in a region where a spot is generated in the epidermis region. Since the light that has entered the epidermis is attenuated by melanin, the brightness of the image in the area with the spot is lowered. Since the image generated by the light transmitted through the first polarizing filter 11 is an image obtained by cutting most of the specular reflection component of the facial skin, that is, an image obtained by cutting most of the shining of the facial skin, It makes it easier to see the state of stains and skin color.

  The microcomputer 200A calculates one or more feature indexes indicating the above-described skin region features, generates image data indicating the results, and outputs the image data to the display 30. FIG. 3 is a diagram illustrating an example of display of a skin measurement result. In the example shown in FIG. 3, a stain image 52 and a radar chart 53 of feature indicators are displayed on the display 30 together with a mirror image 51 of the user's face. The user 50 can know his / her skin condition from these display information. Thus, the user 50 can know his / her skin condition from the electronic mirror device 100 used as a mirror.

  Note that the feature index may be calculated by comparing face image data obtained by imaging with each data stored in the database 200D of the cloud server 200 described above.

  Further, a light source that emits blue light or cyan light may be used as the light source of the polarization illumination device 20. The image captured by the camera 10 is an image obtained by cutting most of the specular reflection component of the facial skin, that is, an image obtained by cutting most of the shining of the facial skin. . Since the light that has entered the epidermis is attenuated by melanin, the brightness of the image in the area with the spot is lowered. In addition, since the absorption of melanin increases as the wavelength is shorter, imaging with blue or cyan band light increases the contrast due to spots, making it easier to visualize. Note that cyan image information may be generated using blue image information and green image information included in a color image.

  In addition, a first face image obtained by imaging with the polarized illumination on and a second face image obtained by imaging with the polarized illumination off are sequentially generated, and the second image is obtained from the first image. The output image may be acquired by performing subtraction processing on the image. As a result, the influence of ambient light such as room lighting can be reduced in the output image. For example, in the case of quantifying the skin condition from the output image, even if the ambient light changes for each measurement, the quantitative value does not depend on it. Can be obtained.

  Next, another example of the electronic mirror device 100 according to the embodiment will be described with reference to FIG. The electronic mirror device 100 shown in FIG. 4 further includes a camera 12 having a third polarizing filter 13 in the optical path, as compared with the electronic mirror device 100 shown in FIG.

  The transmission polarization axis of the first polarization filter of the camera 10 and the transmission polarization axis of the third polarization filter 13 of the camera 12 are orthogonal to each other. The transmission polarization axis of the third polarization filter 13 of the camera 12 and the transmission polarization axis of the second polarization filter 21 of the polarization illumination device 20 are parallel to each other.

  When the skin condition is evaluated, the polarization illumination device 20 including the second polarizing filter 21 irradiates the face of the user 50 with polarized light that vibrates in the direction of the second polarization axis. A part of the light reflected by the face of the user 50 enters the camera 10 provided with the first polarizing filter 11 and the camera 12 provided with the third polarizing filter 13 in the optical path. The camera 10 mainly receives the polarized light oscillating in the direction of the first polarization axis and images the user's face. The camera 12 mainly receives polarized light oscillating in the direction of the second polarization axis and images the user's face.

  As described above, the first polarizing filter 11 of the camera 10 has a polarization axis that is orthogonal to the polarization axis of the second polarizing filter 21 of the polarization illumination device 20, and therefore the light that is specularly reflected by the facial skin. Cut most of the ingredients. Since the image generated by the light transmitted through the first polarizing filter 11 is an image obtained by cutting most of the specular reflection component of the facial skin, that is, an image obtained by cutting most of the shining of the facial skin, It makes it easier to see the state of stains and skin color.

  On the other hand, since the third polarizing filter 13 of the camera 12 mainly transmits light oscillating in the direction of the second polarization axis, the image data captured by the light transmitted through the third polarizing filter 13 is the facial skin. It has a lot of light components that are specularly reflected. Therefore, the image generated by the light transmitted through the third polarizing filter 13 has a clear shadow due to the unevenness of the facial skin, and thus becomes an image in which fine wrinkles and textures of the skin can be easily recognized.

  As described above, in the electronic mirror device 100 illustrated in FIG. 4, an image in which the stain state can be easily recognized can be acquired by the camera 10 including the first polarizing filter 11, and the third polarizing filter 13 is provided. The camera 12 can acquire an image in which fine wrinkles and textures of the skin can be easily recognized. Thereby, the user can obtain more skin information.

  Further, by combining the image data obtained by the camera 10 and the image data obtained by the camera 12, image data corresponding to non-polarized light can be generated, and a face image corresponding to the case where polarized light is not used can be generated. It can also be presented to the user.

  In FIG. 4, an image of two polarization axes is acquired by two cameras. However, a configuration may be adopted in which the polarizing filter is mechanically switched manually or by an actuator and time-division imaging is performed. With such a configuration, it is possible to acquire images of two polarization axes with one camera.

  Further, the state in which the polarizing filter is not inserted may be mechanically switched manually or by an actuator. By adopting such a configuration, when it is used simply as a mirror function, attenuation of light by the polarizing filter can be eliminated, so that an image with low noise can be obtained.

  Next, another example of the electronic mirror device 100 according to the embodiment will be described with reference to FIG. The electronic mirror device 100 illustrated in FIG. 5 further includes a polarization illumination device 22 including a fourth polarizing filter 23 in the optical path, as compared with the electronic mirror device 100 illustrated in FIG.

  The transmission polarization axis of the second polarization filter 21 of the polarization illumination device 20 and the transmission polarization axis of the fourth polarization filter 23 of the polarization illumination device 22 are orthogonal to each other. The transmission polarization axis of the fourth polarization filter 23 of the polarization illumination device 22 and the transmission polarization axis of the first polarization filter 11 of the camera 10 are parallel to each other.

  When evaluating the skin condition, the polarization illumination device 22 including the fourth polarizing filter 23 irradiates the face of the user 50 with polarized light that vibrates in the direction of the first polarization axis. A part of the light reflected by the face of the user 50 enters the camera 10 having the first polarizing filter 11, and the camera 10 mainly receives the polarized light oscillating in the direction of the first polarization axis. Take a picture of the face.

  As described above, the first polarization filter 11 of the camera 10 has a polarization axis orthogonal to the polarization axis of the second polarization filter 21 of the polarization illumination device 20. When imaging is performed with the polarization illumination device 22 turned off and the polarization illumination device 20 turned on, the first polarization filter 11 of the camera 10 cuts most of the light component that is specularly reflected by the facial skin. Since the image generated by the light transmitted through the first polarizing filter 11 is an image obtained by cutting most of the specular reflection component of the facial skin, that is, an image obtained by cutting most of the shining of the facial skin, It makes it easier to see the state of stains and skin color.

  On the other hand, when imaging is performed with the polarization illumination device 20 turned off and the polarization illumination device 22 turned on, the first polarization filter 11 of the camera 10 mainly transmits light oscillating in the direction of the first polarization axis. The image data captured by the light transmitted through the first polarizing filter 11 has many light components that are specularly reflected by the face skin. Therefore, since the shading due to the unevenness of the facial skin is clear, the image is easy to recognize small wrinkles and textures of the skin.

  As described above, in the electronic mirror device 100 shown in FIG. 5, by turning on the polarization illumination device 20 including the second polarizing filter 21, an image that easily recognizes a state such as a stain or a skin color is acquired. By turning on the polarization illumination device 22 including the fourth polarizing filter 23, an image that is easy to recognize small wrinkles, textures, and the like of the skin can be acquired. Thereby, the user can obtain more skin information.

  In addition, a first image obtained by imaging with only the polarization illumination device 20 turned on, a second image obtained by imaging with both the polarization illuminations 20 and 22 turned off, and polarization illumination A third image obtained by imaging with only the device 22 turned on is sequentially generated, and the second image is subtracted from the first image to obtain a first output image. The third image The second output image may be obtained by subtracting the second image from. As a result, the influence of ambient light such as room lighting can be reduced in the first output image and the second output image. For example, the skin state is quantified from the first output image and the second output image. In some cases, even if the ambient light changes for each measurement, a quantitative value that does not depend on it can be obtained.

  Next, another example of the electronic mirror device 100 according to the embodiment will be described with reference to FIG. The electronic mirror device 100 shown in FIG. 6 further includes cameras 14 and 16 at both left and right ends of the electronic mirror device 100, as compared with the electronic mirror device 100 shown in FIG. The transmission polarization axes of the polarization filters 15 and 17 included in the cameras 14 and 16 and the transmission polarization axis of the first polarization filter of the camera 10 are parallel to each other. The transmission polarization axes of the polarization filters 10, 15, and 17 included in the camera 10, the cameras 14, and 16 and the transmission polarization axis of the second polarization filter 21 of the polarization illumination device 20 are parallel to each other.

  The features of the side portion of the face, such as wrinkles at the corners of the eyes, can obtain a clearer image when the face is imaged from the oblique side rather than from the front. The electronic mirror device 100 shown in FIG. 6 further includes cameras 14 and 16 at both left and right ends. The cameras 14 and 16 face inward as indicated by arrows in the figure, and by capturing images using the cameras 14 and 16, the features of the lateral side portions of the face can be captured more clearly.

  For example, when imaging features on the surface of the skin such as wrinkles on the corners of the eyes, the polarization illumination device 22 is turned on for imaging. Since the transmission polarization axes of the polarization filters 15 and 17 included in the cameras 14 and 16 and the transmission polarization axis of the second polarization filter 21 of the polarization illumination device 22 are parallel to each other, the image data captured by the cameras 14 and 16 is It has many light components that are specularly reflected on the face skin. Therefore, since the shading due to the unevenness of the facial skin becomes clear, it is possible to obtain an image in which wrinkles on the corners of the eyes can be easily recognized.

  In FIG. 6, the camera 10 may not be provided with a polarizing filter. With such a configuration, when used only as a mirror, the camera 10 does not attenuate light due to the polarizing filter, so that a highly sensitive image can be acquired. Further, when performing skin measurement, it is possible to selectively use the cameras 14 and 16.

  Next, another example of the electronic mirror device 100 according to the embodiment will be described with reference to FIG. The electronic mirror device 100 shown in FIG. 7 further includes a non-polarized illumination device 24 as compared with the electronic mirror device 100 shown in FIG. When the electronic mirror device 100 is used only as a mirror without performing skin measurement, the polarization illumination device 20 is turned off and the non-polarization illumination device 24 is turned on, so that a specific feature of the skin is not emphasized. A face image can be obtained.

  When skin measurement is performed, the non-polarization illumination device 24 is turned off and the polarization illumination device 20 is turned on, so that a face image in which specific features of the skin are emphasized using polarization as described above. It is possible to obtain skin measurement appropriately.

  In this way, by switching the illumination device to be used according to the application, an image suitable for each application can be obtained.

  Next, another example of the electronic mirror device 100 according to the embodiment will be described with reference to FIG. The electronic mirror device 100 shown in FIG. 8 is provided with the polarized illumination device 20 over the entire periphery of the display 30 as compared with the electronic mirror device 100 shown in FIG. By providing the polarized illumination device 20 over the entire periphery of the display 30, it is possible to irradiate light evenly on the face of the user 50 and to obtain a face image with less shadow. Thereby, while being able to perform skin measurement more appropriately, when using as a mirror, the image which is easy to confirm the state of a face can be shown to a user.

(Embodiment 2)
FIG. 9 is a diagram illustrating the electronic mirror device 110 according to the second embodiment. FIG. 9A is a front view of the electronic mirror device 110, and FIG. 9B is a side view of the electronic mirror device 110.

  For example, the electronic mirror device 110 includes the same components as the electronic mirror device 100 of the first embodiment except for the display 30. The electronic mirror device 110 is a detachable electronic mirror device, and is connected to an electronic device including a display such as a mobile terminal or a tablet terminal via a connector 111, for example. The electronic mirror device 110 in this example is a cradle type, and for example, by placing an electronic device such as a mobile terminal or a tablet terminal on the electronic mirror device 110, the electronic mirror device 110 and the tablet terminal are connected. The electronic mirror device 110 includes a placement unit 112 for placing an electronic device such as a mobile terminal or a tablet terminal. The placement unit 112 includes a connector 111. The connector 111 has a structure that can be directly connected to a connector provided in an electronic device such as a mobile terminal or a tablet terminal. When an electronic device such as a portable terminal or a tablet terminal is placed on the placement unit 112, the electronic mirror device 110 and the placed electronic device are connected via the connector 111.

  FIG. 10A is a front view of the electronic mirror device 110 connected to the tablet terminal 120, and FIG. 10B is a side view of the electronic mirror device 110 connected to the tablet terminal 120. When the tablet terminal 120 is placed on the placement unit 112, the camera 10 and the display 32 of the tablet terminal 120 are arranged adjacent to each other. Specifically, the adjacent arrangement means that a display is present at a position where a user who takes an image with the camera 10 can visually check the mirror image at the time of shooting. In the present embodiment, the camera 10, the polarized illumination devices 20 and 22, and the display 32 of the tablet terminal 120 are arranged in substantially the same plane in the xz plane.

  In this example, in order to display a mirror image of the user's face on the display 32, the image data of the user's face captured by the camera 10 is output to the tablet terminal 120 via the connector 111 (interface). The microcomputer included in the tablet terminal 120 displays a mirror image of the user's face on the display 32 based on the received face image data. The electronic mirror device 110 may have any of the configuration of the camera and the illumination device illustrated in FIGS. 1 to 8. For the electronic mirror device 110 connected to the tablet terminal 120, refer to FIGS. 1 to 8. The same function as that of the electronic mirror device 100 described above can be achieved.

  The image processing and skin measurement processing described above may be executed by the microcomputer 40A included in the electronic mirror device 110, may be executed by the microcomputer included in the tablet terminal 120, or share the processing. You may go.

  Further, when the electronic mirror device 110 is used only as a mirror without performing skin measurement, an image captured by the camera 18 included in the tablet terminal 120 may be used. In this example, it is assumed that the camera 18 does not include a polarizing filter. By using the camera 18, a natural face image that does not emphasize specific features of the skin can be obtained.

  Also, when performing skin measurement, by turning on and using the polarization illumination device, it is possible to obtain a face image that emphasizes specific features of the skin using polarized light as described above, and appropriately performs skin measurement. It can be carried out.

  Thus, by switching the camera to be used according to the application, an image suitable for each application can be obtained.

  FIG. 11 is a diagram illustrating another example of the electronic mirror device 110. The electronic mirror device 110 in FIG. 11 is a detachable electronic mirror device, similar to the electronic mirror device 110 in FIG. 9, but is different from the electronic mirror device 110 in FIG. 9 in that it is not a cradle type. The electronic mirror device 110 in FIG. 11 is also connected to an electronic device having a display such as a portable terminal or a tablet terminal via a connector 111, for example. The connector 111 of the electronic mirror device 110 has a structure that can be directly connected to a connector provided in an electronic device such as a portable terminal or a tablet terminal.

  12A is a front view of the electronic mirror device 110 connected to the tablet terminal 120, and FIG. 12B is a side view of the electronic mirror device 110 connected to the tablet terminal 120. When the tablet terminal 120 is connected via the connector 111, the camera 10 and the display 32 of the tablet terminal 120 are arranged adjacent to each other. Specifically, the adjacent arrangement means that a display is present at a position where a user who takes an image with the camera 10 can visually check the mirror image at the time of shooting. In the present embodiment, the camera 10, the polarized illumination devices 20 and 22, and the display 32 of the tablet terminal 120 are arranged in substantially the same plane in the xz plane. The electronic mirror device 110 in FIG. 11 can perform the same function as the electronic mirror device 110 in FIG. 9.

  In the first and second embodiments described above, when the face of the user 50 is tilted, the face image obtained by imaging may be corrected to obtain an image that is not tilted. FIG. 13A shows a face image 51 when the face of the user 50 is tilted, and FIG. 13B shows a corrected face image 51.

  For example, the microcomputer 40A extracts a plurality of feature parts from a face image obtained by imaging, and compares the feature parts to determine the inclination of the face. For example, the position of both eyes is extracted from the face image, and when the line connecting the positions of both eyes is inclined with respect to the x direction (horizontal direction), it is determined that the face of the user 50 is inclined. In that case, an image that is not tilted can be generated by correcting the image so that the line connecting the positions of both eyes is parallel to the x direction (horizontal direction). For example, when the skin measurement area 54 is extracted as a rectangular area having a feature point such as an eye as a base point, the skin measurement area 54 may be shifted due to the tilt of the face. Since the skin measurement area 54 is not displaced, skin measurement can be performed more appropriately.

  Further, the above-described electronic mirror devices 100 and 110 may include a distance measuring device. FIG. 14 shows an electronic mirror device 100 including a distance measuring device 60 as an example. When the imaging distance between the electronic mirror device 100 and the face of the user 50 changes, the result of skin measurement also changes. Therefore, it is desirable to perform skin measurement while keeping the imaging distance constant.

  In the example shown in FIG. 14, the distance measurement result by the distance measuring device 60 is displayed on the display 30 as the indicator 70. The indicator 70 serves as a guide for guiding the face of the user 50 to a position suitable for skin measurement. A central portion 72 in the indicator 70 indicates an imaging distance suitable for skin measurement, and a marker 71 indicates a current distance. In the example of FIG. 14, since the face of the user 50 is too far away from the electronic mirror device 100, the marker 71 is displayed below the indicator 70 and guides the user 50 to approach the electronic mirror device 100. When the face of the user 50 gets too close to the electronic mirror device 100, the marker 71 is displayed on the upper side of the indicator 70 and guides the user 50 to move away from the electronic mirror device 100. When the face of the user 50 is at a position suitable for skin measurement, the marker 71 is positioned at the central portion 72 in the indicator 70, and an image for use in skin measurement is taken at that timing. Thereby, skin measurement can be performed in a state where a constant imaging distance suitable for skin measurement is maintained.

  Further, the distance measurement may be a method obtained by a triangulation method from the parallax between the image acquired by the camera 10 of FIG. 4 and the image acquired by the camera 12, or the image acquired by the camera 14 of FIG. 16 may be obtained by a triangulation method based on the parallax of the image acquired in Step 16.

  The operations of the electronic mirror devices 100 and 110 according to the first and second embodiments may be realized by hardware, software, or a combination thereof. A computer program for executing such an operation is stored in a memory included in an electronic device such as an electronic mirror device and / or a tablet terminal, for example, and the operation is executed by a microcomputer included in these devices. Further, such a computer program may be installed from a recording medium (such as an optical disk or a semiconductor memory) on which the computer program is recorded into an electronic device such as an electronic mirror device and / or a tablet terminal, or an electric communication line such as the Internet. You may download via. In addition, the computer program for executing the skin measurement process may be stored in a memory provided in the cloud server. In this case, the skin measurement process may be executed by a microcomputer provided in the cloud server.

  The technique of the present disclosure is particularly useful in the field of electronic mirrors.

10, 12, 14, 16, 18 Camera 11, 13, 15, 17, 21, 23 Polarizing filter 20, 22 Polarized illumination device 24 Non-polarized illumination device 30, 32 Display 40 Control device 50 User 51 Mirror image of user's face 60 Distance measuring device 70 Indicator 100, 110 Electronic mirror device 111 Connector 120 Tablet terminal 200 Cloud server 210 Communication network

Claims (25)

An electronic mirror device that displays a mirror image of a user's face,
A first camera that images the user's face via a first polarizing filter;
A first polarization illumination device that irradiates the user's face with polarized light through a second polarization filter;
A display for displaying a mirror image of the user's face imaged by the first camera;
The first camera and the display are arranged adjacent to each other;
A distance measuring device for measuring a distance between the electronic mirror device and the user's face;
The display is an electronic mirror device that displays a guide for guiding the user such that a distance between the electronic mirror device and the user's face is a predetermined distance . An electronic mirror device for imaging a user's face,
A first camera that images the user's face via a first polarizing filter;
A first polarization illumination device that irradiates the user's face with polarized light through a second polarization filter;
An interface for outputting image data of the user's face captured by the first camera to the outside in order to display a mirror image of the user's face on a display;
The interface is configured such that the first camera and the display are arranged adjacent to each other when a terminal having the display is connected via the interface.   The electronic mirror device according to claim 1, wherein the first camera, the first polarized illumination device, and the display are arranged in substantially the same plane.   4. The electronic mirror device according to claim 1, wherein a transmission polarization axis of the first polarization filter and a transmission polarization axis of the second polarization filter are orthogonal to each other. 5. The first polarized illumination device irradiates the user's face with polarized light that vibrates in the direction of the second polarization axis,
The first camera receives polarized light that vibrates in a direction of a first polarization axis different from the direction of the second polarization axis, out of the light reflected by the user's face, and the user's face The electronic mirror device according to claim 1, wherein the electronic mirror device is imaged.   The electronic mirror device according to any one of claims 1 to 5, further comprising a skin measurement unit that measures the user's skin using image data of the user's face captured by the first camera.   The electronic mirror device according to claim 6, wherein the skin measurement unit collates image data of the user's face with data in a cloud server and performs skin measurement of the user.   The electronic mirror device according to claim 6 or 7, wherein the skin measurement unit performs skin measurement of the user using image data in which a face orientation is corrected. A distance measuring device for measuring a distance between the electronic mirror device and the user's face;
The electronic mirror device according to claim 6, wherein the display displays a guide for guiding the user such that a distance between the electronic mirror device and the user's face is a predetermined distance. . A second camera having a third polarizing filter in the optical path;
The electronic mirror device according to claim 1, wherein a transmission polarization axis of the first polarization filter and a transmission polarization axis of the third polarization filter are orthogonal to each other. A second camera having a third polarizing filter in the optical path;
The transmission polarization axis of the first polarization filter and the transmission polarization axis of the third polarization filter are orthogonal to each other,
The distance between the second image captured by the first image and the second camera captured by the first camera and the face of the digital mirror device and the user is measured,
The electronic mirror device according to claim 6, wherein the display displays a guide for guiding the user such that a distance between the electronic mirror device and the user's face is a predetermined distance. .   The skin measurement unit according to claim 9 or 11, wherein the skin measurement unit performs skin measurement using image data of a face obtained by imaging when a distance between the electronic mirror device and the user's face is a predetermined distance. The electronic mirror device described. A polarization illumination device including a fourth polarization filter in the optical path;
The electronic mirror device according to claim 1, wherein a transmission polarization axis of the second polarization filter and a transmission polarization axis of the fourth polarization filter are orthogonal to each other.   The electronic mirror device according to claim 1, further comprising a non-polarized illumination device. It said first polarizing illumination device emits blue light, digital mirror device according to any of claims 1 to 12. It said first polarizing illumination device emits cyan light, digital mirror device according to any of claims 1 to 12. It said first polarizing illumination device emits white light, digital mirror device according to any of claims 1 to 12. A plurality of the first polarized illumination devices;
The plurality of the first polarizing illumination device, wherein are arranged on the left and right of the first camera, digital mirror device according to any of claims 1 to 9. It said first polarizing illumination device is disposed around the display, digital mirror device according to any of claims 1 to 12. First face image data obtained by imaging the first polarization illumination device in an on state, and second face image data obtained by imaging the first polarization illumination device in an off state. generated, wherein the first face image data of the second face image data by subtracting process to generate a third face image data, the digital mirror apparatus according to any one of claims 1 to 12. When the electronic mirror device is connected to an electronic device incorporating a camera,
Using face image data obtained by imaging with the camera of the electronic device, a mirror image of the user's face is displayed on the display.
The electronic mirror device according to claim 2, wherein skin measurement is performed using face image data obtained by imaging with a camera of the electronic mirror device. A control method for controlling an electronic mirror device that images a user's face and displays a mirror image of the user's face,
The user's face is imaged with a camera through a first polarizing filter,
Illuminating the user's face with polarized light through a second polarizing filter with a lighting device;
Display a mirror image of the user's face captured by the camera on the display ;
A distance measuring device to measure the distance between the electronic mirror device and the user's face;
A control method for an electronic mirror device , wherein a guide for guiding the user is displayed on the display such that a distance between the electronic mirror device and the user's face is a predetermined distance . A control method for controlling an electronic mirror device that images a user's face,
The user's face is imaged with a camera through a first polarizing filter,
Illuminating the user's face with polarized light through a second polarizing filter with a lighting device;
A control method for an electronic mirror device, wherein image data of the user's face captured by the camera is output to the outside in order to display a mirror image of the user's face on a display. A computer program for causing an electronic mirror device to image a user's face and displaying a mirror image of the user's face,
In the computer of the electronic mirror device,
The user's face is imaged with a camera through a first polarizing filter,
Illuminating the user's face with polarized light through a second polarizing filter with a lighting device;
Display on the display a mirror image of the user's face imaged by the camera ;
A distance measuring device to measure the distance between the electronic mirror device and the user's face;
A computer program that causes the display to display a guide for guiding the user so that a distance between the electronic mirror device and the user's face is a predetermined distance . A computer program for causing an electronic device to image a user's face,
In the computer of the electronic device,
The user's face is imaged with a camera through a first polarizing filter,
Illuminating the user's face with polarized light through a second polarizing filter with a lighting device;
A computer program for outputting image data of the user's face captured by the camera to the outside in order to display a mirror image of the user's face on a display.

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