KR20150064597A - Video display device and operating method thereof - Google Patents

Abstract

A method for operating a display device according to an embodiment of the present invention comprises the steps of: obtaining an image of a user; extracting a user area including a face area and a hand area of the user by using the obtained image of the user; extracting a user ratio based on the extracted user area; and controlling a work area of the user upon changes in the extracted user ratio.

Description

TECHNICAL FIELD [0001] The present invention relates to a display device and a method of operating the same,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device and a method of operating the same, and more particularly, to a display device and an operation method thereof for optimizing a user's working area according to a distance between a display device and a user.

In recent years, digital TV services using wired or wireless communication networks have become popular. The digital TV service can provide various services that can not be provided by the existing analog broadcasting service.

For example, in the case of IPTV (Internet Protocol Television) service, which is one kind of digital TV service, it provides a bidirectionality allowing the user to actively select the type of viewing program, viewing time, and the like. The IPTV service may provide various additional services such as Internet search, home shopping, online game, etc. based on the bidirectionality.

In other words, as the convergence of the Internet and the TV is made, the trend of the TV flows from the unidirectional TV to the interactive TV leading the user's participation, and the control technology in various environments is required.

 In general, the method for controlling the contents by the user is to control the cursor of the screen two-dimensionally by using a button on the remote controller or recently using a three-axis acceleration sensor and a gyroscope. However, these devices are difficult to use as a non-human interface and have a costly burden in addition to the difficulty of management (the risk of loss).

Recently, a device-free Natural Interface has been attracting attention, which is one of the most popular hand gesture recognition technologies. However, the present 2D camera-based hand gesture recognition is very sensitive to the movement of the pointer (small movement to large movement) and the pointer is small to small movement even at large distances Movement). That is, there is a problem that the working area of the user varies depending on the distance, which may cause confusion to the users.

It is an object of the present invention to provide a display device and an operation method thereof for improving user's convenience by optimizing a work area of a user according to a distance between a display device and a user.

A method of operating a display device according to an embodiment of the present invention includes the steps of acquiring an image of a user, extracting a user area including a face area and a hand area of the user using the acquired image of the user, Extracting a user ratio based on the extracted user ratio and adjusting the user's working area in accordance with the extracted user ratio.

A display device according to an embodiment of the present invention includes a user area extracting unit and a user area extracting unit extracting a user area including a user's face area and a hand area using a display unit, a camera acquiring an image of the user, A user ratio extracting unit for extracting a user ratio based on the user region, and a controller for adjusting the user's work region according to the change of the extracted user ratio.

According to various embodiments of the present invention, the user's work area can be optimized according to the distance between the display device and the user, thereby improving the user's convenience.

1 is a block diagram illustrating a configuration of a display apparatus according to an embodiment of the present invention.
2 is a block diagram for explaining a further configuration of a display device according to an embodiment of the present invention.
3 is a flowchart illustrating an operation method of a display apparatus according to an exemplary embodiment of the present invention.
4 to 6 are views for explaining how a user's working area according to an embodiment of the present invention may vary depending on a distance between a user and a display device.
FIGS. 7 to 8 show a user screen when a user of the acquired image is identified as an unregistered user according to an embodiment of the present invention.

Hereinafter, embodiments related to the present invention will be described in detail with reference to the drawings. The suffix "module" and " part "for the components used in the following description are given or mixed in consideration of ease of specification, and do not have their own meaning or role.

The display device according to the embodiment of the present invention is an intelligent display device that adds a computer support function to a broadcast reception function, for example, and is equipped with a function of inputting a handwriting, a touch screen Or an interface that is more convenient to use than a space remote controller or the like. Also, it can be connected to the Internet and a computer by the support of a wired or wireless Internet function, and can perform functions such as e-mail, web browsing, banking or game. A standardized general-purpose OS can be used for these various functions.

Therefore, the display device described in the present invention can freely add or delete various applications, for example, on a general-purpose OS kernel, so that various user-friendly functions can be performed. More specifically, the display device may be, for example, a network TV, an HBBTV, a smart TV, an LED TV, an OLED TV, or the like, and may be applied to a smartphone as the case may be.

1 is a block diagram illustrating a configuration of a display apparatus according to an embodiment of the present invention.

1, a display device 100 includes a broadcast receiver 130, an external device interface 135, a storage 140, a user input interface 150, a controller 170, a display 180, An audio output unit 185, and a power supply unit 190. The broadcast receiver 130 may include a tuner 131, a demodulator 132, and a network interface 133.

The external device interface unit 135 may receive an application or application list in an adjacent external device and may transmit the received application or application list to the control unit 170 or the storage unit 140.

The network interface unit 133 may provide an interface for connecting the display device 100 to a wired / wireless network including the Internet network. The network interface unit 133 can transmit or receive data to another user or another electronic device via the network connected thereto or another network linked to the connected network.

In addition, some content data stored in the display device 100 can be transmitted to another user registered in the display device 100 or a selected one of the other electronic devices or selected electronic devices.

The network interface unit 133 can access a predetermined web page through the connected network or another network linked to the connected network. That is, it is possible to access a predetermined web page through a network and transmit or receive data with the server.

The network interface unit 133 may receive content or data provided by the content provider or the network operator. That is, the network interface unit 133 can receive contents such as a movie, an advertisement, a game, a VOD, a broadcast signal, and related information provided from a content provider or a network provider through a network.

In addition, the network interface unit 133 can receive update information and an update file of the firmware provided by the network operator, and can transmit data to the Internet or a content provider or a network operator.

The network interface unit 133 can select and receive a desired application among applications open to the public via the network.

The storage unit 140 stores programs for signal processing and control in the controller 170, and can store image-processed video, audio, or data signals.

The storage unit 140 may perform a function for temporarily storing video, audio, or data signals input from the external device interface unit 135 or the network interface unit 133, It may also store information about the image.

The storage unit 140 may store a list of applications or applications input from the external device interface unit 135 or the network interface unit 133. [

The display apparatus 100 may reproduce and provide a content file (a moving picture file, a still picture file, a music file, a document file, an application file, etc.) stored in the storage unit 140 to a user.

The user input interface unit 150 may transmit a signal input by the user to the control unit 170 or may transmit a signal from the control unit 170 to the user. For example, the user input interface unit 150 may be implemented by various communication methods such as Bluetooth, Ultra Wideband (WB), ZigBee, RF (Radio Frequency) communication, and infrared (IR) It is possible to receive and process control signals such as power on / off, channel selection, screen setting, and the like from the remote control device 200, or transmit control signals from the control unit 170 to the remote control device 200. [

The user input interface unit 150 may transmit a control signal input from a local key (not shown) such as a power key, a channel key, a volume key, and a set value to the controller 170.

The video signal processed by the controller 170 may be input to the display unit 180 and displayed as an image corresponding to the video signal. The video signal processed by the controller 170 may be input to the external output device through the external device interface 135. [

The audio signal processed by the control unit 170 may be output to the audio output unit 185 through audio. The voice signal processed by the control unit 170 may be input to the external output device through the external device interface unit 135.

In addition, the control unit 170 can control the overall operation in the display device 100. [

The control unit 170 may control the display device 100 according to a user command or an internal program input through the user input interface unit 150. The control unit 170 accesses the network and displays a list of applications or applications desired by the user, So that it can be downloaded into the portable terminal 100.

The control unit 170 can output the video or audio signal processed through the channel information selected by the user through the display unit 180 or the audio output unit 185.

The control unit 170 controls the operation of the external device through the external device interface unit 135 according to an external device video playback command received through the user input interface unit 150. For example, So that a video signal or a voice signal can be output through the display unit 180 or the audio output unit 185.

The control unit 170 may control the display unit 180 to display an image and may output the broadcast image input through the tuner 131 or the external input through the external device interface unit 135, The image input through the network interface unit or the image stored in the storage unit 140 may be displayed on the display unit 180. [ In this case, the image displayed on the display unit 180 may be a still image or a moving image, and may be a 2D image or a 3D image.

In addition, the controller 170 may control the content stored in the display device 100, the received broadcast content, or external input content input from the outside to be reproduced, and the content may be a broadcast image, an external input image, , A still image, a connected web screen, and a document file.

The display unit 180 converts the video signal, the data signal, the OSD signal, the video signal, the data signal, and the like received from the external device interface unit 135 into R, G, and B signals, respectively, Signal can be generated.

On the other hand, the display device 100 shown in FIG. 1 is only an embodiment of the present invention. Some of the components shown may be integrated, added, or omitted depending on the specifications of the display device 100 actually implemented.

That is, two or more constituent elements may be combined into one constituent element, or one constituent element may be constituted by two or more constituent elements, if necessary. In addition, the functions performed in each block are intended to illustrate the embodiments of the present invention, and the specific operations and apparatuses do not limit the scope of the present invention.

1, the display apparatus 100 may include a tuner 131 and a demodulator 132 and may include a network interface unit 133 or an external device interface unit (not shown) 135 to reproduce the image.

For example, the display apparatus 100 may be divided into an image processing apparatus such as a set-top box for receiving broadcasting signals or contents according to various network services, and a content reproducing apparatus for reproducing contents inputted from the image processing apparatus. .

In this case, the operation method of the display device according to the embodiment of the present invention to be described below may be applied not only to the display device 100 as described with reference to FIG. 1, but also to the image processing device such as the separated set- 180, and an audio output unit 185. The content playback apparatus may be implemented by any one of the above-described content playback apparatuses.

Next, a further configuration of the display device 100 according to an embodiment of the present invention will be described with reference to FIG.

2 is a block diagram for explaining a further configuration of a display device according to an embodiment of the present invention.

The display apparatus 100 further includes a camera 300, a user region extracting unit 400, a user ratio extracting unit 500, and a work area setting unit 600.

The camera 300 can acquire a user's image through shooting. The camera 300 of the present invention may be a 2D camera. In addition, the camera 300 of the present invention may be a motion recognition camera capable of recognizing the movement of a user, in particular, a hand gesture motion of a user.

The user region extraction unit 400 may extract a user region of a body part of a user including a user's face region and a hand region using the obtained user's image. A detailed description will be given later.

The user ratio extracting unit 500 may acquire the face area and the hand area based on the extracted face area and the hand area of the user and extract the user ratio using at least one of the obtained face area and hand area. A detailed description will be given later.

The work area setting unit 600 may receive a user input for setting a work area and set a reference work area corresponding to the extracted reference user ratio. A detailed description will be given later.

The control unit 170 can control all components of the display device 100 as a whole. In particular, the controller 170 may adjust the user's work area according to the extracted user ratio. This will be described in detail later.

Next, an operation method of a display apparatus according to an embodiment of the present invention will be described with reference to FIGS. 3 to 8. FIG.

3 is a flowchart illustrating an operation method of a display apparatus according to an exemplary embodiment of the present invention.

The camera 300 of the display device 100 acquires the first image of the user located on the front of the display device 100 (S101). The camera 300 can acquire and process an image frame such as a still image or moving image when the display device 100 is in the video communication mode, the photographing mode, or the motion recognition mode of the user. The camera 300 may be disposed at the top of the display device 100, but is not limited thereto.

In one embodiment, the camera 300 may receive a user input for capturing and may capture the user, thereby acquiring the user's image.

In yet another embodiment, the camera 300 may sense the user and automatically capture the image, thereby acquiring the user's image.

Further, in the case of step S101, it is assumed that the user and the display apparatus 100 are located apart by a certain distance. That is, it is assumed that the camera 300 acquires the first image of the user while the user is distant from the display device 100 by a certain distance.

In one embodiment, the camera 300 may be a motion-recognition camera equipped with a motion sensor capable of recognizing the user's motion. The motion recognition camera can recognize the movement of the user, especially the movement of the user's hand gesture.

The user region extraction unit 400 of the display device 100 extracts a user region of a body part of the user including the face region and the hand region of the user using the acquired first image of the user (S103). In one embodiment, the user region extraction unit 400 may extract the face region and the hand region from the acquired first image of the user through various recognition techniques.

The user region extracting unit 400 may extract any one of a Knowledge-based method, a Feature-based method, a Template-matching method, and an Appearance-based method The face region of the user can be extracted through the method.

The knowledge-based method is a method of detecting the face region based on a certain distance and positional relationship of the eyes, nose, and mouth of the face.

The feature-based method is a method of detecting a face region using information of size, shape, correlation, facial color and texture information of facial elements, or mixed type information of these elements.

The template matching method is a method of detecting a face region by comparing the input image with a standard template for all faces.

The appearance-based method is a method of detecting the face region using the model learned by the learning image set.

The user region extracting unit 400 may extract the face region and the hand region of the user using the skin color detection method in the feature-based method.

The skin color detection method is a method that can easily extract a candidate region of a face and a hand from a user's image. It is a method that can detect a candidate region easily and quickly although it receives a lot of images of illumination and a camera and is not accurate. Specifically, the skin color method acquires a user's RGB image, converts the image into a YUV image, detects a skin color using the U component and the V component, and extracts a face region and a hand region of the user through the detected skin color Method.

The user region extracting unit 400 may extract the face region and the hand region from the first image of the user through the skin color detection method.

The user ratio extracting unit 500 of the display device 100 obtains the face area and the hand area based on the extracted face area and the hand area of the user (S105), and uses at least one of the obtained face area and hand area The reference user ratio is extracted (S107).

The user ratio extracting unit 500 can acquire the face area corresponding to the face area based on the extracted face area of the user, and the user ratio extracting unit 500 extracts the face area corresponding to the hand area The hand area can be obtained.

In one embodiment, the user ratio extractor 500 may extract the reference user ratio using only the acquired hand area. For example, when the display device 100 is separated from the user by a certain distance, the user ratio extracting unit 500 can extract the reference user ratio at a hand area of 80 obtained. Here, the numerical values are merely examples.

In another embodiment, the user-ratio extracting unit 500 may extract the reference user ratio using the acquired face area and hand area. Specifically, the user ratio extracting unit 500 can extract the reference user ratio by comparing the obtained face area and the hand area. More specifically, the user-ratio extracting unit 500 can extract the reference user ratio by calculating the ratio of the hand area to the obtained face area.

For example, when the obtained face size is 100 and the hand size is 80, the user ratio extracting unit 500 can extract the reference user ratio as 80/100 = 0.8. Here, the numerical values are merely examples.

The reference user ratio is a ratio used to set a user's reference working area, which will be described later, at a rate that can be different for each user when the display device 100 and the user are located a certain distance apart.

The work area setting unit 600 of the display device 100 receives a user input for setting a work area and sets a reference work area corresponding to the extracted reference user ratio (S109).

In one embodiment, the work area may be an area that can control the operation of the display device 100 through the user's hand gesture. For example, when a user wants to control the operation of the display device 100 using a pointer that is an object moving in response to the movement of the hand gesture, the work area controls the operation of the display device 100 through the movement of the pointer It can be an area that can be used. In this case, the work area can be determined according to the area where the user can control the movement of the pointer through the hand gesture. This means that the work area varies depending on the distance between the display device 100 and the user. This will be described in detail with reference to Figs. 4 to 6. Fig.

4 to 6 are views for explaining how a user's working area according to an embodiment of the present invention may vary depending on a distance between a user and a display device.

4, the display device 100 and the user K are separated by a reference distance d0. The display device 100 may display the pointer 800 that can be moved in response to the movement of the hand gesture. The pointer 800 may be used to select an application, media content, etc., displayed on the display device 100 or the like.

The camera 300 mounted on the display device 100 can take an image of the user K and recognize the movement of the hand gesture of the user K. [ When the display device 100 and the user K are separated by the reference distance d0, the reference working area may be set to A1.

The reference working area is an area where the user can freely control the movement of the pointer displayed on the display device 100 according to the hand gesture movement, and can be an area that can be set by the user. That is, when the user K moves the hand gesture by the movement distance of a1, the pointer 800 displayed on the display device 100 can be moved by the distance b1 corresponding to the movement distance of a1.

5, when the distance between the display device 100 and the user K becomes smaller than the reference distance d0 (d0> d1), that is, when the user K is displayed on the display When located closer to the apparatus 100, the user's work area A2 may be smaller than the reference work area A1. The fact that the user's work area is smaller than the reference work area means that the movement distance of the pointer is larger corresponding to the movement distance of the user's hand gesture.

That is, when the user K moves the hand gesture by the moving distance of a1, the pointer 800 displayed on the display device 100 is shifted from the distance b1 moved in the reference working area A1 corresponding to the moving distance of a1 And can be moved by a larger distance b2. If the work area is smaller than the reference work area, the movement distance of the pointer becomes much larger according to the movement distance of the hand gesture. Therefore, it is difficult to control the movement of the pointer 800 displayed on the display device 100 as desired, It can cause discomfort.

6, when the distance between the display device 100 and the user K is longer than the reference distance d0 (d2> d0), that is, when the user K is displayed on the display If located further away from the device 100, the user's working area A3 may be larger than the reference working area A1. The fact that the user's work area is larger than the reference work area may mean that the movement distance of the pointer is further reduced corresponding to the movement distance of the user's hand gesture.

That is, when the user K moves the hand gesture by the moving distance of a1, the pointer 800 displayed on the display device 100 is shifted from the distance b1 moved in the reference working area A1 corresponding to the moving distance of a1 Can be moved by a smaller distance b3. If the work area is larger than the reference work area, the moving distance of the pointer becomes much smaller according to the moving distance of the hand gesture. Therefore, it is difficult to control the movement of the pointer 800 displayed on the display device 100, ≪ / RTI >

4, the user K can move the hand gesture at the reference distance d0 to the display device 100 and set a reference working area suitable for him. Specifically, the work area setting unit 600 can receive a user input for setting a reference work area corresponding to the extracted user ratio, and can set the reference work area A1 according to the received user input. In one embodiment, the user input may be an input to adjust the speed of movement of the pointer 800.

3 will be described again.

The storage unit 140 of the display device 100 stores the reference work area and the reference user ratio in association with each other (S111). In one embodiment, the storage unit 140 may store the reference work area set by the user corresponding to the extracted reference user ratio. 4, when the distance between the display device 100 and the user K is a certain distance d0, the storage unit 140 stores the ratio of the hand area to the face area of the user as a reference operation And may be stored in association with the area A1.

In another embodiment, the storage unit 140 may store the reference user ratio, the reference work area, and the moving speed of the pointer set by the user, respectively.

 Thereafter, the camera 300 of the display device 100 recognizes the user located on the front side of the display device 100 and acquires a second image of the recognized user (S113).

The control unit 170 of the display device 100 confirms whether the user identified through the acquired second image of the user is a registered user (S115). The controller 170 extracts the face region of the user from the second image using the face recognition technique of Step S103 and confirms whether the user of the second image is a previously registered user based on the extracted face region.

If it is determined that the user is a registered user, the user ratio extracting unit 500 extracts the user ratio based on the acquired second image (S117). That is, the user ratio extracting unit 500 can extract the user ratio using the face area and the hand area obtained by acquiring the face area and the hand area of the user from the second image in accordance with the steps S105 and S107.

The ratio of newly extracted users can also be the ratio of the hand area to the face area, or only the hand area.

At this time, the newly extracted user ratio may be equal to or different from the reference user ratio.

If the distance between the display device 100 and the user is greater than or less than the reference distance d0, the ratio of the newly extracted user may be different from the reference user ratio. If the distance between the display device 100 and the user is less than the reference distance d0, The newly extracted user ratio may be the same as the reference user ratio.

On the other hand, if the user is identified as an unregistered user, the control unit 170 outputs a popup window indicating that the user is an unregistered user through the display unit 180 (S119).

In one embodiment, the unregistered user may be a user who has not set a reference work area. The process of notifying that the user is an unregistered user will be described with reference to FIG. 7 to FIG.

FIGS. 7 to 8 show a user screen when a user of the acquired image is identified as an unregistered user according to an embodiment of the present invention.

If the user of the acquired second image is an unregistered user, the display device 100 may display a pop-up window 900 in which a message " is an unregistered user " as shown in FIG.

After one second thereafter, the display apparatus 100 can output a pop-up window 1000 in which a message " Please set an optimum working area for the person himself / herself " is displayed.

In one embodiment, when the user of the acquired image is an unregistered user, the display device 100 may display the pop-up window 1000 shown in FIG. 8 without displaying the pop-up window 900 shown in FIG. 7 have.

3 will be described again.

The control unit 170 compares the newly extracted user ratio with the previously stored reference user ratio in step S117 and confirms whether the value is changed (S121). That is, the control unit 170 can check whether the ratio of the user ratio is changed or not by checking whether the ratio of the newly extracted user is increased or decreased compared to the existing user ratio.

If it is determined that the user ratio is changed, the controller 170 adjusts the work area according to the changed user ratio (S123). If the user ratio is determined to be the same, the reference work area is maintained (S125).

In one embodiment, the controller 170 may adjust the movement speed of the pointer displayed on the display device 100 to adjust the user's work area. That is, the controller 170 may adjust the movement speed of the pointer according to the changed ratio of the user, thereby maintaining the work area as the reference work area.

This will be described with reference to Figs. 4 to 6 again.

In the case of FIG. 5, the extracted user ratio may be larger than the reference user ratio. This is because the distance d1 between the display device 100 and the user K is closer to the reference distance d0 and the area of the hand or the area of the hand is relatively larger than the face area of the user K.

In this case, since the user's work area A2 is smaller than the user's work area A1 shown in FIG. 4, the movement distance b2 of the pointer 800 with respect to the movement of the hand gesture is smaller than the movement distance b2 of the reference work area Will be larger than the moving distance b1 of the pointer 800 on the moving object A1.

Accordingly, when the work area is smaller than the reference work area, the controller 170 can reduce the moving speed of the pointer 800, thereby reducing the moving distance of the pointer 800. [ When the moving distance of the pointer 800 is reduced, the user K may feel like controlling the operation of the display device 100 in the reference working area A1.

In the case of FIG. 6, the extracted user ratio may be smaller than the reference user ratio. This is because the distance d2 between the display device 100 and the user K is larger than the reference distance d0 and the area of the hand or the area of the hand is relatively smaller than the face area of the user K. [

In this case, since the user's work area A3 is larger than the user's work area A1 shown in Fig. 4, the moving distance b3 of the pointer 800 with respect to the movement of the hand gesture is smaller than the reference working area Lt; RTI ID = 0.0 > (b1) < / RTI >

Accordingly, when the work area is larger than the reference work area, the control unit 170 can increase the moving distance of the pointer 800 by increasing the moving speed of the pointer 800. [ When the moving distance of the pointer 800 is increased, the user K may feel like controlling the operation of the display device 100 in the reference working area A1.

According to various embodiments of the present invention, as the distance between the display device 100 and the user is changed, the operation area is adjusted to the reference operation area so that the user can control the operation of the display device 100 in the optimal operation area .

According to an embodiment of the present invention, the above-described method can be implemented as a code readable by a processor on a medium on which a program is recorded. Examples of the medium that can be read by the processor include ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage, etc., and may be implemented in the form of a carrier wave (e.g., transmission over the Internet) .

The above-described display device is not limited to the configuration and method of the above-described embodiments, but the embodiments may be configured such that all or some of the embodiments are selectively combined so that various modifications can be made. It is possible.

Claims (20)

A method of operating a display device,
Acquiring an image of a user;
Extracting a user area including a user's face area and a hand area using the acquired user's image;
Extracting a user ratio based on the extracted user area; And
And adjusting the work area of the user according to the change of the extracted user ratio
A method of operating a display device. The method according to claim 1,
The step of extracting the user ratio
Extracting the user ratio using at least one of an area of the face area and an area of the hand area
A method of operating a display device. 3. The method of claim 2,
The step of extracting the user ratio
And extracting the user ratio using a ratio of an area of the hand region to an area of the face region
A method of operating a display device. 3. The method of claim 2,
The step of extracting the user ratio
And extracting the user ratio using the area of the hand region
A method of operating a display device. The method according to claim 1,
The step of extracting the user ratio
Extracting a reference user ratio related to a distance between the display device and the user,
And setting a reference work area corresponding to the extracted user ratio
A method of operating a display device. 6. The method of claim 5,
The step of adjusting the working area
And adjusting the working area to the reference working area when the user ratio is changed
A method of operating a display device. The method according to claim 1,
The step of adjusting the working area
And adjusting the moving speed of the moving pointer according to the movement of the user's hand gesture,
The pointer
An object displayed on the display device for controlling the operation of the display device
A method of operating a display device. The method according to claim 1,
The work area of the user
A region in which the user can control the operation of the display device through the pointer
A method of operating a display device. The method according to claim 1,
The ratio of the extracted users is
A value that varies depending on the distance between the display device and the user
A method of operating a display device. 10. The method of claim 9,
The step of adjusting the working area
And adjusting the work area according to the distance between the display device and the user
A method of operating a display device. In the display device,
A display unit;
A camera for acquiring a user's image;
A user area extracting unit that extracts a user area including a face area and a hand area of the user using the acquired user image;
A user ratio extracting unit for extracting a user ratio based on the extracted user area; And
And a controller for adjusting the work area of the user according to the change of the extracted user ratio
Display device. 12. The method of claim 11,
The user ratio extracting unit
Extracting the user ratio using at least one of an area of the face area and an area of the hand area
Display device. 13. The method of claim 12,
The user ratio extracting unit
And extracting the user ratio using a ratio of an area of the hand region to an area of the face region
Display device. 13. The method of claim 12,
The user ratio extracting unit
And extracting the user ratio using the area of the hand region
Display device. 12. The method of claim 11,
The user ratio extracting unit
Extracting a reference user ratio related to the distance between the display device and the user,
And a work area setting unit for setting a reference work area corresponding to the extracted user ratio
Display device. 16. The method of claim 15,
The control unit
And when the user ratio is changed, adjusting the work area to the reference work area
Display device. 12. The method of claim 11,
The control unit
The moving speed of the moving pointer is adjusted according to the movement of the user's hand gesture,
The pointer
An object for controlling the operation of the display device,
Display device. 12. The method of claim 11,
The work area of the user
A region in which the user can control the operation of the display device through the pointer
Display device. 12. The method of claim 11,
The ratio of the extracted users is
A value that varies depending on the distance between the display device and the user
Display device. 20. The method of claim 19,
The control unit
And adjusting the work area according to the distance between the display device and the user
Display device.

Images