JP2019047159A - Electronic device, control device, control method of control device, and control program - Google Patents

Abstract

To properly control a display on a display device according to the peeping situation.SOLUTION: A control device (1) includes a peep determination unit (14) for identifying a face image that is not registered as the user's face and in which the line of sight is facing a display device (4) from a captured image obtained by capturing the front of the display device (4) by an imaging sensor (2), a position estimation unit (15) for estimating the position of a person of the face image with respect to the display device (4) based on the image of the person of the face image included in the captured image, and a display control unit (16) for performing processing to make the display of the display device (4) invisible from the person according to the estimated position of the person with respect to the display device (4).SELECTED DRAWING: Figure 1

Description

  The present invention relates to an electronic device, a control device, a control method of the control device, and a control program.

  With the spread of smartphones in general and the increase in size of display screens, there is a growing need for technology that prevents peeping from the surroundings in preparation for use in public places. A technology widely used as a technology for preventing peeping is a technology called bale view and a method for applying a protective film to the surface of a display screen.

  Bale view displays a geometric semi-transparent pattern on the display, and makes the information originally displayed inconspicuous when the display is viewed from the left and right (oblique) directions.

  On the other hand, sticking of a protective film is also similar in principle to bale view, and by sticking a semitransparent protective film on the surface of the display screen, it is difficult to see information from the left and right (oblique) directions. It is.

  However, these methods have the disadvantage that they are not very effective for peeping from behind (approximately from behind). In addition, the above method is also for the user himself (when there is no one around him, as compared to the state where nothing is displayed or the state where nothing is attached due to the display of a translucent pattern or the attachment of a protective film) There is a disadvantage that it becomes an annoying display.

  As a technique different from the method of always putting the terminal as described above into the peeping prevention state, there is a technique disclosed in Patent Document 1. This technology uses an in-camera (a camera provided on the front side of a display) built in the terminal to determine whether a person other than the user is reflected in the surroundings, and if it is reflected, By applying a display filter or adjusting the contrast of the screen, it is possible to make it difficult for the person in question to see the displayed contents of the screen.

JP, 2011-217146, A (October 27, 2011 release)

  However, in the above-mentioned prior art, there is a problem that the display on the display device is uniformly the same in the state of being peeped. More specifically, in the above-mentioned prior art, the display of the display device according to the situation of peeping, such as whether it is peeping from behind (approximately right behind) or peeping from the left and right (diagonal) There is a problem that it can not control appropriately.

  One aspect of the present invention has been made in view of the above problems, and an object thereof is to realize an electronic device and the like capable of appropriately controlling display of a display device according to a situation of watching. It is.

  In order to solve the above-mentioned subject, an electronic device concerning one mode of the present invention is an electronic device provided with an imaging device, a display, and a control device, and the above-mentioned control device is the above-mentioned display. A process of specifying a face image which is not registered as a user's face and whose line of sight is facing the display device from a captured image obtained by capturing the front of the device, and of the face image included in the captured image Based on a process of estimating the position of the face image relative to the display device based on the image of the person, and making the display on the display less visible to the person according to the estimated position of the person relative to the display device Process and do.

  In order to solve the above-mentioned subject, a control device concerning one mode of the present invention is a control device which controls electronic equipment, and an imaging device is registered as a user's face from a picturized picture which picturized the front of a display. And a peep judging unit for specifying a face image whose line of sight is facing the display device, and the person's face image based on the image of the person of the face image included in the captured image And a display control unit that performs processing to make the display of the display device less visible to the person according to the estimated position of the person with respect to the display device.

  In order to solve the above-mentioned subject, a control method of a control device concerning one mode of the present invention is a control method of a control device which controls electronic equipment, and an imaging device picturized the front of a display device from a captured image, Based on a peeping judgment process of identifying a face image not registered as a user's face and whose sight is directed to the display device, and based on an image of a person of the face image included in the captured image, Display control for performing position estimation processing for estimating the position of the face image with respect to the display device, and processing for making the display of the display device less visible to the person according to the estimated position of the person for the display device And processing.

  According to the electronic device, the control device, and the control method according to one aspect of the present invention, it is possible to appropriately control the display of the display device according to the situation of watching.

(A) is a block diagram which shows the structure of the smart phone which concerns on Embodiment 1 of this invention, (b) is a front view which shows the external appearance by the side in which the display apparatus of the said smart phone is provided. It is a flow chart which shows an example of operation of the above-mentioned smart phone. (A) And (b) is a figure for demonstrating an example of the peeping prevention method, (c) and (d) is a figure for demonstrating another example of the peeping prevention method. (A) and (b) is a figure for demonstrating the further another example of the peeping prevention method, (c) and (d) is for demonstrating the further another example of the peeping prevention method FIG. (A)-(c) is a figure for demonstrating the further another example of the peeping prevention method. It is a figure which shows the variation of the peeping prevention method. It is a block diagram which shows the structure of the smart phone which concerns on Embodiment 2 of this invention. It is a flow chart which shows an example of operation of the above-mentioned smart phone.

  It will be as follows if embodiment of this invention is described based on FIGS. 1-8. Hereinafter, for the sake of convenience of explanation, the same symbols may be added to the other items for the components having the same functions as the components described in the certain items, and the description thereof may be omitted.

Embodiment 1
(A) of FIG. 1 is a block diagram which shows a structure of the smart phone (electronic device) 10 which concerns on Embodiment 1 of this invention. Moreover, (b) of FIG. 1 is a front view which shows the external appearance by which the display apparatus 4 of the smart phone 10 is provided. As shown in (a) of FIG. 1, the smartphone 10 includes a control device 1, an imaging sensor (imaging device) 2, a storage device 3, and a display device 4.

  The control device 1 controls each part of the smartphone 10 in an integrated manner, and the application execution unit 11, the application determination unit 12, the sensor control unit 13, the peeping determination unit 14, the position estimation unit 15, the display control unit 16, And a display image generation unit 17. The details of each control block included in the control device 1 will be described later.

  The imaging sensor 2 can be configured by, for example, a camera module such as an in-camera (a camera provided on the side of the smartphone 10 on which the display device 4 is provided). The camera module is a combination of a lens unit in which a photographing lens is incorporated and an imaging sensor in which an imaging element such as a CCD (charge transfer element) or CMOS (complementary metal oxide semiconductor) is incorporated. It is miniaturized so that it can be incorporated in a small case of an electronic device.

  In the present embodiment, the imaging sensor 2 is disposed so as to be able to capture the side facing the display screen of the display device 4 of the smartphone 10 (the front of the display screen). More specifically, as shown to (b) of FIG. 1, the imaging sensor 2 is arrange | positioned in the longitudinal direction upper end of the surface in which the display apparatus 4 of the smart phone 10 is provided.

  In addition, the arrangement position of the imaging sensor 2 is not limited to said example, You may arrange at any one of the lower end of the longitudinal direction of the surface in which the display apparatus 4 is provided, and the both ends of a transversal direction . The imaging sensor 2 captures an image of the side facing the display screen of the display device 4 (in front of the display screen), and passes the captured image to the peeping judgment unit 14. A human sensor or the like may be provided in the smartphone 10 and combined with the image sensor 2 to increase the accuracy of human detection.

  In the storage device 3, information necessary to realize the function of the smartphone 10 is recorded in advance, or information generated by information processing in the smartphone 10 is recorded as needed. In particular, in the storage device 3 of the present embodiment, face authentication information of the user registered in association with the smartphone 10 is stored in advance.

  For example, a liquid crystal panel is used for the display device 4. However, the display panel used for the display device 4 is not limited to the liquid crystal panel, and may be an organic EL (electro luminescence) panel, an inorganic EL panel, a plasma panel or the like.

  Next, details of each control block included in the control device 1 will be described. The application execution unit 11 executes processing to execute various applications such as a mail application, a social network service (SNS) application, a web browser application, or a TV application according to a user operation. The smartphone 10 may have a function that allows the user to select the application.

  The application determination unit 12 determines whether a predetermined application (for example, a mail application, a web browser application, or the like) that requires peep prevention is being executed on the smartphone 10. When the application is being executed on the smartphone 10, the sensor control unit 13, the peep judging unit 14 and the display control unit 16 are notified of that effect.

  The sensor control unit 13 controls the operation of the imaging sensor 2. The sensor control unit 13 causes the imaging sensor 2 to start the photographing operation when receiving the notification that the application is being executed on the smartphone 10 from the application determination unit 12. On the other hand, when the sensor control unit 13 receives a notification that the application is not being executed on the smartphone 10 from the application determination unit 12, the sensor control unit 13 causes the imaging sensor 2 to stop the imaging operation.

  In addition, the predetermined application which needs to prevent peeping may be fixed in advance, for example, stored in the storage device 3 in advance, or the smartphone 10 has a function that can be set by the user. Good. Alternatively, the smartphone 10 may automatically determine it from the information handled by the application (for example, an application that handles an image captured by a phone book, a mail, or a camera application may be determined as an application that requires peeping prevention).

  The peep judging unit 14 performs peep judging processing for specifying a face image which is not registered as the user's face and whose line of sight is facing the display 4 from the captured image obtained by imaging the front of the display 4. Do. For example, in the case where a plurality of persons (face images) appear in the captured image received from the imaging sensor 2, the peep judging unit 14 acquires face authentication information of the user from the storage device 3, and the user It is determined whether there is a face image (a face image of another person other than the user) that is not registered. In addition, when there is a face image not registered as a user, the peep judging unit 14 judges peeping depending on whether the line of sight is facing the display device 4.

  The position estimation unit 15 performs processing of estimating the position of the face image with respect to the display device 4 based on the image of the person of the face image included in the captured image. More specifically, it is estimated where in the real space the person is located with respect to the smartphone 10 based on the size and position of the person image in the captured image.

  For example, if the size of the face image of the person other than the user in the captured image is equal to or larger than a certain threshold, the other person is near the smartphone 10, and if smaller than the threshold, the other person is far from the smartphone 10 presume. Also, for example, based on the position in the horizontal direction (lateral direction) in the captured image at the center of the face image of another person other than the user, the other person is in the direction of the left side, the right side, or the middle of the smartphone 10 or the user Estimate if you are in

  The position estimation unit 15 estimates the position of the person for whom the peeping determination is determined with respect to the display device 4, and notifies the display control unit 16 of the position.

  The display control unit 16 performs processing to make the display on the display device 4 less visible to the person in accordance with the estimated position of the person on the display device 4. That is, based on the notifications from the application determination unit 12 and the viewing determination unit 14, the display control unit 16 determines the necessity of implementation of the viewing prevention display and selects the effective viewing prevention method (described later) Select at least one peep prevention method from among the plurality of peep prevention methods). The smartphone 10 may have a function that allows the user to make settings such as “use the method in this case in advance”.

  In addition, the display control unit 16 requests the display image generation unit 17 to generate an image for preventing a peeping view as needed. The display control unit 16 notifies the display device 4 of the content to be displayed based on the above result.

  The display control unit 16 performs processing to make the display on the display device 4 less visible from the person, and then displays the face image of the person from the captured image obtained by imaging the front of the display device 4. A process of returning the display of the device 4 to a normal display not subjected to the process of making the person difficult to see is performed. As a result, since the display is normally displayed when the user is not watching, and the display is changed to the display made difficult to be seen by the person only when the user is watching, the burden on the display is reduced. Further, the user can recognize the situation of being peeped by the change of the display content, and can continue to use the smartphone 10 as it is even in the situation.

  The display image generation unit 17 receives the request from the display control unit 16 and performs processing on the image being displayed to generate an image for preventing peeping (by peeping the display of the display device 4 Perform processing to make it difficult to see from the person in question).

  The process of making the display of the display device 4 less visible to the person may be a process of reducing the character size of the display of the display device 4. This makes it possible to make the displayed character less visible to the person who is watching.

  Further, the process of making the display of the display device 4 less visible to the person may be a process of reducing the image size of the display of the display device 4. Thus, the displayed image can be made less visible to the person who is looking through.

  The process of making the display of the display device 4 less visible to the person may be a process of reducing the luminance of the display device 4. Thus, the displayed information can be made less visible to the person who is looking through.

  Further, the process of making the display of the display device 4 less visible to the person is a process of changing the display position of the display of the display device 4 in the displayable area of the display device 4 according to the position of the person with respect to the display device 4 It may be Thereby, the displayed information can be made less visible to the person. According to the configuration of the smartphone 10 described above, the display of the display device 4 can be appropriately controlled in accordance with the situation of peeping. One embodiment of the present invention can be realized by a general smartphone alone without using special additional equipment.

(Operation of smartphone)
Next, the operation of the smartphone 10 will be described based on FIG. FIG. 2 is a flowchart showing an example of the operation of the smartphone 10. First, in step S (hereinafter, “step” will be omitted) 101, the application determination unit 12 determines whether or not a specific application is used. The above-mentioned specific application is a predetermined application which needs the above-mentioned peep prevention. As a result of the above determination, when a specific application is used, the sensor control unit 13, the viewing determination unit 14 and the display control unit 16 are notified of that and the process proceeds to S102. On the other hand, if you are not using a specific application, go back.

  Next, in S102, the sensor control unit 13 activates the imaging sensor 2, captures an image, notifies the peep judging unit 14 of the captured image, and proceeds to S103. In S103, the peep judging unit 14 judges whether or not a plurality of persons including the user is reflected in the captured image. If a plurality of persons are reflected, the process proceeds to S104. On the other hand, when a plurality of persons are not reflected in the captured image, the process proceeds to S110.

  In S104, the peep judging unit 14 determines whether or not there is a face image not registered with the user among the plurality of face images, and if there is a face image not registered with the user, the process proceeds to S105. . On the other hand, if there is no face image not registered as a user, the process proceeds to S110.

  In S105, the peep judging unit 14 judges whether the line of sight of the face image not registered as a user is directed to the display device 4 (display unit). If the line of sight is directed to the display device 4, the process proceeds to S106. move on. When the line of sight of a face image not registered as a user is facing the display device 4, it is determined that "the user is watching" (including the possibility). On the other hand, if the line of sight does not face the display device 4, the process proceeds to S110.

  In S106, the position estimation unit 15 estimates a peeping position (position with respect to the display device 4) of the person of the face image not registered as a user, and the process proceeds to S107. In S107, the display control unit 16 selects at least one peeping prevention method from a plurality of peeping prevention methods described later, and proceeds to S108.

  In S108, the display image generation unit 17 generates a peeping prevention display screen, and the process proceeds to S109. In S109, the display control unit 16 changes the screen display content of the display device 4 (peeping prevention display ON), and returns to S103.

  In S110, the display control unit 16 changes the screen display content of the display device 4 (peeping prevention display OFF), and the process proceeds to S111. In S111, the application determination unit 12 determines whether or not a specific application is used, and if the specific application is used, the process returns to S103. On the other hand, when the specific application is not used in S111, the process proceeds to S112. In S112, the sensor control unit 13 ends the operation of the imaging sensor 2 and becomes END.

(Example of the peeping prevention method)
Next, an example of the peeping prevention method (a process of making the display on the display device 4 less visible to a person who is peeping) will be described based on FIGS. 3 to 6. As shown in (a) and (b) of FIG. 3, when the peeping is detected, the processing of making the display on the display 4 less visible to the person who is peeping is the display of the display 4. It may be processing to reduce the character size. This makes it possible to make the displayed character less visible to the person who is watching.

  As shown in (c) and (d) of FIG. 3, when the peeping is detected, the processing of making the display of the display 4 less visible to the person who is peeping is the display of the display 4. It may be processing to reduce the image size. Thus, the displayed image can be made less visible to the person who is looking through. For example, in the case of looking from behind, the character size or the image size is reduced so that the contents of the screen can hardly be recognized from a long distance. The processing of FIG. 3 (b) and the processing of FIG. 3 (d) may be performed at the same time to enhance the peeping prevention effect.

  Next, as shown in (a) and (b) of FIG. 4, when the peeping is detected, the processing of making the display on the display device 4 less visible to the person who is peeping is the display 4. It may be processing to reduce the brightness of Thus, the displayed information can be made less visible to the person who is looking through. The brightness of the entire display device 4 is lowered so that the contents of the screen can hardly be recognized from a position slightly away. In addition, it may be made to be able to consider the influence of the reflection calculated from surrounding illumination, etc. by combination with an illumination sensor.

  Also, as shown in (c) and (d) of FIG. 4, when peeping is detected, display of the display of the display device 4 according to the position of the person who is peeping in relation to the display device 4 The display position in the displayable area of the device 4 may be changed. Thus, the displayed information can be made less visible to the person who is looking through.

  Next, as shown in (a) and (b) of FIG. 5, when viewed from the left, the display position may be changed to the right of the displayable area. Further, as shown in (a) and (c) of FIG. 5, when viewed from the right direction, the display position may be changed to the left side of the displayable area. As described above, the display position is changed in the reverse direction of the displayable area from the person who is looking at the image, thereby making it difficult to see the information from the distant position. By arranging the display position on the screen of the information displayed on the display device 4 on the opposite side to the direction in which the other person is looking into, it is possible to use a display screen which is difficult for another person to see. Furthermore, as an additional function, the user can know the direction in which the user is peeking back from the change in the display content on the display device 4, and by paying attention in that direction, an effect on crime prevention is also expected. Ru.

  Next, FIG. 6 is a diagram showing a variation of the peeping prevention method. In the selection example 1, the position estimation unit 15 determines “peeping from near the rear left of the user” based on the captured image, and notifies the display control unit 16. The display control unit 16 is using the mail that is the target application based on the information from the application determination unit 12, and since it is peeping from near, combining the character size change, the screen brightness change, and the display position change Choose a way to prevent viewing.

  In the second selection example, the position estimation unit 15 determines “peeping from near the rear right of the user” based on the captured image, and notifies the display control unit 16. The display control unit 16 is using the Web browser that is the target application based on the information from the application determination unit 12 and is a peeping view from near, therefore, character size change, image size change, screen brightness change, and Select the peeping prevention method combined with the display position change.

  In the selection example 3, the position estimation unit 15 determines “peeping from the far right of the user right” based on the captured image, and notifies the display control unit 16. Although the display control unit 16 is using the Web browser that is the target application based on the information from the application determination unit 12, since it is a peeping view from a distance, a peeping prevention method is selected only by changing the screen brightness. Do.

  In the selection example 4, the position estimation unit 15 determines “peeping from near the rear left of the user” based on the captured image, and notifies the display control unit 16. However, the display control unit 16 does not select any of the peeping prevention methods because it is using the non-target application of the peeping prevention function based on the information from the application determination unit 12.

Second Embodiment
FIG. 7 is a block diagram showing the configuration of a smartphone (electronic device) 10a according to the second embodiment of the present invention. In the present embodiment, the current position of the smartphone 10 is determined using a GPS function or the like, and the peeping prevention function is disabled when the user is at a specific place (for example, a home or a company).

  The smartphone 10 a of the present embodiment is different from the configuration of the smartphone 10 in that the smartphone 10 a of the present embodiment includes the current position determination unit 18, but the other configuration is the same as the smartphone 10. For example, when it is determined by the current position determination unit 18 that the smartphone 10 is present at a position registered in advance, the processing of the peeping determination described above may not be performed. Thereby, in the scene which is obviously unnecessary, the smart phone 10 can be used more comfortably without performing the process after the process of determining the peeping look.

(Operation of smartphone)
Next, the operation of the smartphone 10a will be described based on FIG. FIG. 8 is a flowchart showing an example of the operation of the smartphone 10a. The flowchart shown in FIG. 8 is different from the flowchart shown in FIG. 2 in that S201 is provided before S101 in the flowchart shown in FIG.

  That is, in S201, the current position determination unit 18 determines whether or not the smartphone 10a is currently present at a specific place (pre-registered place). Return to On the other hand, when the smart phone 10a does not exist in a specific place, it progresses to S101. In addition, since the operation | movement after S101 is the same as that of the case of the flowchart shown in FIG. 2 mentioned above, description is abbreviate | omitted.

[Example of software implementation]
The control block of the smartphone 10 (in particular, the application determination unit 12, the sensor control unit 13, the peep determination unit 14, the position estimation unit 15, the display control unit 16, the display image generation unit 17 and the current position determination unit 18) It may be realized by a logic circuit (hardware) formed in an IC chip or the like, or may be realized by software.

  In the latter case, the smartphone 10 includes a computer that executes instructions of a program that is software that implements each function. The computer includes, for example, at least one processor (control device) and at least one computer readable storage medium storing the program. Then, in the computer, the processor reads the program from the recording medium and executes the program to achieve the object of the present invention. For example, a CPU (Central Processing Unit) can be used as the processor. As the above-mentioned recording medium, a tape, a disk, a card, a semiconductor memory, a programmable logic circuit and the like can be used besides “a non-temporary tangible medium” such as a ROM (Read Only Memory). In addition, a RAM (Random Access Memory) or the like for developing the program may be further provided. The program may be supplied to the computer via any transmission medium (communication network, broadcast wave, etc.) capable of transmitting the program. Note that one aspect of the present invention can also be realized in the form of a data signal embedded in a carrier wave in which the program is embodied by electronic transmission.

[Summary]
An electronic device according to aspect 1 of the present invention is an electronic device including an imaging device, a display device, and a control device, and the control device is a captured image obtained by imaging the front of the display device by the imaging device. A process of specifying a face image not registered as the user's face and whose sight line is directed to the display device, and the face based on the image of the person of the face image included in the captured image A process of estimating the position of the image person with respect to the display device, and a process of making the display on the display device less visible to the person according to the estimated position of the person with respect to the display device.

  According to the above configuration, a face image which is not registered as the user's face and whose line of sight is directed to the display device is specified from the captured image obtained by imaging the front of the display device by the imaging device. The position of the face image on the display device is estimated based on the image of the person on the face image, and the display of the display device is displayed according to the estimated position of the person on the display screen. Perform processing to make it difficult for the person to see. Therefore, it is possible to appropriately control the display of the display device according to the situation of watching.

  In the electronic device according to aspect 2 of the present invention, in the above aspect 1, after the control device performs processing to make the display of the display device less visible to the person, the captured image obtained by imaging the front of the display device In addition, when the face image of the person is not specified, processing may be performed to return the display on the display device to a normal display in which the processing to make it difficult to be seen by the person is not performed. According to the above configuration, since the display is normally displayed when the user is not watching, and the display is changed to the display made difficult to be seen by the person only when the user is watching, the burden on the display is reduced. In addition, the user can recognize the situation of being peeped by the change of the display content, and can continue to use the electronic device as it is in that situation.

  In the electronic device according to aspect 3 of the present invention, in the aspect 1 or 2, the process of making the display on the display device less visible to the person may be a process of reducing the character size of the display of the display device . According to the above configuration, the displayed character can be made less visible to the person.

  In the electronic device according to Aspect 4 of the present invention, in any of Aspects 1 to 3, the processing to make the display on the display device less visible to the person is processing to reduce the image size of the display on the display device. It is good. According to the above configuration, the displayed image can be made less visible to the person.

  In the electronic device according to aspect 5 of the present invention, in any of the aspects 1 to 4, the processing to make the display on the display device less visible to the person may be processing to lower the luminance of the display device . According to the above configuration, the displayed information can be made less visible to the person.

  The electronic device according to aspect 6 of the present invention is the display according to any one of aspects 1 to 5, wherein the control device displays the display of the display according to the position of the person relative to the display. The display position in the possible area may be changed. According to the above configuration, the displayed information can be made less visible to the person.

  An electronic device according to a seventh aspect of the present invention is the electronic device according to any one of the first to sixth aspects, wherein the control device does not perform the process for specifying when the electronic device is present at a position registered in advance. It is good. According to the above configuration, in a scene where it is obviously unnecessary, it is possible to more comfortably use the electronic device without performing the processing after the processing of determining the peeping.

  In the electronic device according to aspect 8 of the present invention, in any one of the above aspects 1 to 7, the control device performs a process of determining execution of a predetermined application, and the execution of the application is determined. The process of identifying may be started. According to the above configuration, since it is not necessary to perform the wasteful operation of performing the processing of determining the peeping until the peeping prevention is unnecessary, it is possible to suppress the consumption of the unnecessary power.

  The control device according to aspect 9 of the present invention is a control device that controls an electronic device, and a captured image obtained by capturing an image of the front of the display device by the imaging device is not registered as the user's face, and the line of sight is The position of the person of the face image with respect to the display device is estimated based on the peep judging unit for specifying the face image facing the display device and the image of the person of the face image included in the captured image The display control unit is configured to perform a process of making the display of the display device less visible to the person according to the position estimation unit and the estimated position of the person with respect to the display device. According to the above configuration, the same effect as in the above aspect 1 can be obtained.

  A control method of a control device according to aspect 10 of the present invention is a control method of a control device for controlling an electronic device, and an imaging device is registered as a user's face from a captured image obtained by capturing the front of a display device. And the display of the person of the face image based on the peep judging process of specifying the face image whose line of sight is directed to the display device and the image of the person of the face image included in the captured image A method including: position estimation processing for estimating a position with respect to a device; and display control processing for performing processing to make the display of the display device less visible to the person according to the estimated position of the person with respect to the display device. . According to the above method, the same effects as in the above aspect 1 can be obtained.

  The control device according to each aspect of the present invention may be realized by a computer. In this case, the control device is realized by the computer by operating the computer as each unit (software element) included in the control device. The control program of the control device and the computer readable recording medium recording the same also fall within the scope of the present invention.

[Items to be added]
The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the claims, and embodiments obtained by appropriately combining the technical means disclosed in the different embodiments. Is also included in the technical scope of the present invention. Furthermore, new technical features can be formed by combining the technical means disclosed in each embodiment.

1 control device 2 imaging sensor (imaging device)
3 Storage Device 4 Display Device 10 Smartphone (Electronic Device)
10a Smartphone (Electronic Device)
11 application execution unit 12 application determination unit 13 sensor control unit 14 peeping determination unit 15 position estimation unit 16 display control unit 17 display image generation unit 18 current position determination unit

Claims (11)

An electronic device comprising an imaging device, a display device, and a control device,
The control unit
A process of specifying a face image which is not registered as the user's face and whose line of sight is facing the display device from a captured image obtained by capturing the front of the display device by the imaging device;
A process of estimating the position of the person of the face image with respect to the display device based on the image of the person of the face image included in the captured image;
An electronic device characterized by performing processing of making the display on the display device less visible to the person according to the estimated position of the person with respect to the display device. The control unit
The display of the display device is performed when the face image of the person is no longer specified from the captured image obtained by capturing the front of the display device after processing to make the display of the display device less visible to the person The electronic device according to claim 1, characterized in that the process of returning to a normal display in which the process of making the person difficult to see is not performed is performed. The process of making the display on the display device less visible to the person is:
The electronic device according to claim 1, wherein the electronic device is a process of reducing the character size of the display on the display device. The process of making the display on the display device less visible to the person is:
The electronic device according to any one of claims 1 to 3, wherein the electronic device is a process of reducing an image size of a display of the display device. The process of making the display on the display device less visible to the person is:
The electronic device according to any one of claims 1 to 4, wherein the electronic device is a process for reducing the luminance of the display device. The control unit
The display position of the display of the display device in the displayable area of the display device is changed according to the position of the person with respect to the display device according to any one of claims 1 to 5, Electronic devices. The control unit
The electronic device according to any one of claims 1 to 6, wherein the process of specifying is not performed when the electronic device is present at a position registered in advance. The control unit
Perform processing to determine the execution of a predetermined application,
The electronic apparatus according to any one of claims 1 to 7, wherein the process of specifying is started when execution of the application is determined. A control device for controlling an electronic device,
A peep judging unit for specifying a face image which is not registered as the user's face and whose line of sight is facing the display device from a captured image obtained by capturing an area in front of the display device;
A position estimation unit configured to estimate the position of the person of the face image relative to the display device based on the image of the person of the face image included in the captured image;
A control device comprising: a display control unit that performs processing to make the display on the display device less visible to the person according to the estimated position of the person with respect to the display device. A control method of a control device for controlling an electronic device, comprising:
Peeping determination processing for specifying a face image which is not registered as the user's face and whose line of sight is directed to the display device from a captured image obtained by capturing an area in front of the display device;
Position estimation processing for estimating the position of the person of the face image with respect to the display device based on the image of the person of the face image included in the captured image;
And D. a display control process for performing a process of making the display on the display device less visible to the person according to the estimated position of the person with respect to the display device.   A control program for causing a computer to function as the control device according to claim 9, wherein the control program causes the computer to function as the watching observation determination unit, the position estimation unit, and the display control unit.

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