JP2012070081A - Image display device, image display program, and image display system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an image display device, an image display program, and an image display system which make users aware that the sight lines of users on the other side in the communication displayed on a display screen are turned to a specific one of the users.SOLUTION: An image display device 1A comprises: a person sight information reception means 104A which receives from an image display device 1B sight line information obtained by detecting the sight lines of the users 2C to 2E on the other side to a display 13B displaying the person images 4A and 4B of users 2A and 2B; a person image information generating means 105A which determines shapes of the pupils on the basis of the sight line information received by the person sight line information reception means 104A and generates the person images of the users 2C to 2E including the pupils having the shapes; and a display 13A which displays the person images generated by the person image information generating means 105A to the users.

Description

  The present invention relates to an image display device, an image display program, and an image display system.

  Techniques have been proposed for matching the line of sight between users in a teleconference system.

  As a technology related to this, Patent Document 1 discloses a display unit that displays an image of a partner at each point where a user is present, and a position defining unit that defines the position of the user with respect to the display screen of the display unit. An imaging unit for imaging the user, and a support mechanism for supporting the imaging unit at a predetermined position between the user and the display screen, and the imaging unit is identified by the position defining unit Within the line-of-sight matching region defined by the distance from the user to the display screen, and the parallax angle at which the user's line of sight and the line of sight of the opponent's image coincide with each other. An image display device is disclosed in which the line of sight between users is matched while suppressing the influence of the presence of the imaging unit on the dialogue by being installed at a position that blocks a part of the image.

Japanese Patent Laid-Open No. 11-75173

  An object of the present invention is to provide an image display device, an image display program, and an image display system that make it possible to perceive that a conversation partner displayed on a display screen is looking at a specific user among a plurality of users. It is in.

[1] Receiving means for receiving gaze information obtained by detecting the gaze of the conversation partner with respect to the display screen of the external display means on which the user's person image is displayed, and a shape corresponding to the received gaze information An image display device comprising: a person image generating means for generating a person image of the conversation partner including a pupil having; and a display means for displaying the person image generated by the person image generating means to the user.

[2] The person image generating means has a shape that appears to be a front view for the user corresponding to the person image displayed on the external display means ahead of the line of sight of the conversation partner according to the line-of-sight information. The image display device according to [1], wherein a person image of the conversation partner including a pupil having the pupil is generated.

[3] The image display device according to [1] or [2], wherein the person image generation unit generates the person image by arranging the pupil at a position corresponding to the line-of-sight information.

[4] The apparatus further includes detection means for detecting the position of the user with respect to the display means, and the person image generation means generates the person image of the conversation partner according to the line-of-sight information and the position of the user. The image display device according to any one of [1] to [3].

[5] The image display device according to any one of [1] to [4], further including line-of-sight changing means for changing the line-of-sight information in different directions.

[6] The apparatus further includes: line-of-sight information generating means for generating line-of-sight information of the user by detecting the line of sight of the user with respect to the display unit; and transmission means for transmitting the line-of-sight information of the user to the outside. The image display device according to any one of [1] to [5].

[7] A receiving unit that receives gaze information obtained by detecting a gaze of a conversation partner with respect to a display screen of an external display unit on which a person image of a user is displayed, and the reception unit that has received the computer In order to function as a person image generation unit that generates the person image of the conversation partner including a pupil having a shape corresponding to line-of-sight information, and a display unit that displays the person image generated by the person image generation unit to the user Image display program.

[8] An image display system in which a first image display device and a second image display device are communicably connected, and the first image display device is a display of the second image display device. A first receiving means for receiving from the second image display device the line-of-sight information of the conversation partner obtained by detecting the line of sight of the conversation partner with respect to the display screen of the means; and the conversation partner received by the first reception means A first person image generating means for generating a person image of the conversation partner including a pupil having a shape corresponding to the line-of-sight information, and displaying the person image of the conversation partner generated by the person image generation means to the user First display means for detecting the user's line of sight with respect to the display unit and generating user's line of sight information; and the user's line of sight information for the second image. First transmission means for transmitting to the display device The second image display device includes second receiving means for receiving the user's line-of-sight information from the first image display apparatus, and the user's line-of-sight information received by the second receiving means. A second person image generating unit configured to generate a person image of the user including a pupil having a corresponding shape; and the user image generated by the second person image generating unit is displayed on the conversation partner. A second display unit; a second line-of-sight information generating unit that generates line-of-sight information of the conversation partner; and a second transmission unit that transmits the line-of-sight information of the conversation partner to the first image display device. Image display system.

  According to the first, seventh, or eighth aspect of the invention, it is possible to perceive that the conversation partner displayed on the display screen is directing a line of sight to a specific user among a plurality of users.

  According to the invention which concerns on Claim 2, the pupil shape which can make a specific user perceive that it is front view can be produced | generated.

  According to the third aspect of the invention, it is possible to perceive the direction in which the conversation partner displayed on the display screen is looking.

  According to the invention which concerns on Claim 4, the shape of the pupil which makes the said specific user perceive that the eyes | visual_axis is aimed at the specific user among several users can be determined.

  According to the invention which concerns on Claim 5, it can be made to perceive that the eyes | visual_axis does not match other than a specific user among several users.

  According to the invention which concerns on Claim 6, it can be made to perceive that the user displayed on the display screen has looked at the specific conversation partner among several conversation partners.

FIG. 1 is a schematic diagram illustrating a configuration example of an image display system according to the first embodiment. FIG. 2 is a block diagram illustrating a configuration example of the image display apparatus. FIG. 3 is a block diagram showing an example of the configuration of the person image information generating unit. 4A and 4B are schematic diagrams illustrating an example of an operation for generating person position information. FIG. 5 is a schematic diagram illustrating an example of an operation for generating human line-of-sight information. 6A to 6D are schematic diagrams illustrating an example of the operation of the person image information generating unit. FIG. 7 is a schematic diagram showing the relationship between the line of sight of the human image and the pupil shape. FIGS. 8A to 8C are schematic diagrams illustrating display examples of human images. FIG. 9 is a schematic diagram illustrating a configuration example of an image display apparatus according to the second embodiment.

[First Embodiment]
(Image display system configuration)
FIG. 1 is a schematic diagram illustrating a configuration example of an image display system according to the first embodiment.

  This image display system 5 is installed at a certain point, and is installed at a remote location different from the location where the image display device 1A is installed, the image display device 1A including the camera 12A and the display unit 13A, and the camera 12B and the display unit. The image display device 1 </ b> B having 13 </ b> B is configured to be communicably connected to each other via the network 3.

  Based on the image information of the users 2A and 2B photographed by the camera 12A of the image display device 1A, the image display device 1B displays the person images 4A and 4B on the display unit 13B and photographed by the camera 12B of the image display device 1B. Based on the image information of the users 2C to 2E, the image display device 1A displays the human images 4C to 4E on the display unit 13A. Further, the image display devices 1A and 1B include microphones and speakers (not shown), and enable calls between the users 2A and 2B and the users 2C to 2E.

  The image display apparatuses 1A and 1B include electronic components such as a CPU (Central Processing Unit) having a function for processing information and a storage unit, process image information captured by the cameras 12A and 12B, and display units This is an information processing apparatus that controls to display images on 13A and 13B. Note that the image display devices 1A and 1B are, for example, personal computers, and a PDA (Personal Digital Assistant), a mobile phone, or the like can also be used.

  The network 3 is a communication network such as a LAN (Local Area Network) or the Internet, and may be wired or wireless.

(Configuration of image display device)
FIG. 2 is a block diagram illustrating a configuration example of the image display apparatus 1A. Note that the image display device 1B has the same configuration as the image display device 1A, and thus description thereof is omitted.

  The image display apparatus 1A includes a CPU and the like, and controls each unit and executes various programs. A storage unit 11A is a storage medium such as an HDD (Hard Disk Drive) or a flash memory and stores information. A camera 12A that captures a user with an image sensor, a lens, and the like; a display unit 13A that is a liquid crystal display or the like that displays characters and images; and an external network 3 that transmits and receives information. And a communication unit 14A. The image display device 1A may further include an operation unit that is a keyboard, a mouse, or the like and generates an operation signal according to an operation.

  The image display device 1A is an electronic device such as a personal computer, a PDA, or a mobile phone, but may be a server device that does not include the camera 12A or the display unit 13A. These functions are replaced by the operation unit and display unit of the terminal device.

  The control unit 10A executes an image display program 110A, which will be described later, to thereby generate an image receiving unit 100A, a person detecting unit 101A, a gaze detecting unit 102A, a human gaze information transmitting unit 103A, a human gaze information receiving unit 104A, and a human image information generating unit. It functions as the means 105A and the line-of-sight variation generating means 106A.

  The image receiving unit 100A receives image information that is captured and output by the camera 12A.

  The person detecting unit 101A detects a person and its position from the image information received by the image receiving unit 100A, and outputs person position information 111A.

  The line-of-sight detection unit 102A detects the line of sight of the person detected by the person detection unit 101A from the image information received by the image reception unit 100A, and outputs the person line-of-sight information 112A.

  The human line-of-sight information transmission unit 103A transmits the human line-of-sight information 112A output from the line-of-sight detection unit 102A to the image display device 1B via the communication unit 14A.

  The human line-of-sight information receiving unit 104A receives the human line-of-sight information 112B transmitted from the image display device 1B via the communication unit 14A.

  The person image information generation unit 105A generates person image information 113A based on the person position information 111A output by the person detection unit 101A and the person line-of-sight information 112B received by the person line-of-sight information reception unit 104A.

  The line-of-sight fluctuation generating unit 106A temporarily changes, for example, random timing and random direction to the person line-of-sight information 112B received by the person line-of-sight information receiving unit 104A.

  The storage unit 11A includes an image display program 110A that causes the control unit 10A to operate as the above-described units 100A to 106A, person position information 111A output by the person detection unit 101A, person line-of-sight information 112A and person image detected by the line-of-sight detection unit 102A The person image information 113A and the like generated by the information generation means 105A are stored.

  FIG. 3 is a block diagram showing an example of the configuration of the person image information generating unit 105A.

  The person image information generation unit 105A includes a person image appearance generation unit 105a, a pupil position determination unit 105b, a pupil shape determination unit 105c, an eye image generation unit 105d, an image composition unit 105e, and the like.

  The person image appearance generation unit 105a generates a person image appearance that is an appearance of a person image other than at least eyes by using an image prepared in advance.

  The pupil position determination unit 105b determines the position of the pupil displayed in the eyes of the person image based on the person line-of-sight information 112B.

  The pupil shape determining means 105c determines the shape of the pupil displayed on the eyes of the person image.

  The eye image generation unit 105d generates an eye image of a human image based on the pupil position determined by the pupil position determination unit 105b and the pupil shape determined by the pupil shape determination unit 105c.

  The image composition unit 105e combines the person image appearance generated by the person image appearance generation unit 105a with the eye image generated by the eye image generation unit 105d, and outputs the person image information 113A.

  Note that the line-of-sight fluctuation generating unit 106A generates fluctuations in the human line-of-sight information 112B input from the human line-of-sight information receiving unit 104A.

(Operation of image display device)
Hereinafter, with reference to FIGS. 1 to 8, an example of the operation of the image display device 1 </ b> A will be described. (1) Basic operation, (2) Person position information generation operation, (3) Person gaze information generation operation, (4) Person image The information generation operation will be described separately.

(1) Basic operation First, the viewer operates an operation unit (not shown) of the image display device 1A to instruct communication with the image display device 1B.

  When receiving the instruction, the image display device 1A starts communication with the image display device 1B. Next, imaging by the camera 12A is executed, and the image receiving unit 100A receives image information that is captured and output by the camera 12A.

(2) Person Position Information Generation Operation Next, the person detection unit 101A detects a person and its position from the image information received by the image receiving unit 100A, and outputs the person position information 111A. Person detection and person position detection are performed as described below.

  4A and 4B are schematic diagrams showing an example of an operation for generating the person position information 111A. FIG. 4A shows image information taken by the camera 12A, and FIG. 4B shows the camera 12A. The position of the person with respect to is shown.

First, the person detection unit 101A recognizes the faces of the users 2A and 2B from the image information 120A taken by the camera 12A using a technique such as face recognition. Face of recognized user 2A and 2B, as shown in FIG. 4 (a), are identified in the image data 120A by the face recognition frame _{P 1} and _{P 2,} person detecting unit 101A includes a face recognition frame _{P 1} and it outputs the coordinates of the center point of P _2.

Next, the person detecting means 101A calculates person positions p ₁ and p ₂ with respect to the camera 12A from the coordinates of the center points of the face recognition frames P ₁ and P ₂ as shown in FIG. It outputs the person position information 111A including ₁ and _{p 2.} Note that the calculation of the person positions p ₁ and p ₂ and the output operation of the person position information 111A are repeatedly executed at predetermined time intervals.

(3) Person Line-of-Sight Information Generation Operation Next, the line-of-sight detection unit 102A detects the line of sight of the person detected by the person detection unit 101A from the image information 120A received by the image reception unit 100A. Specifically, the line-of-sight detection means 102A includes a coordinate of the center point of the eye of the recognized user 2A and 2B by line-of-sight recognition frame Q ₁ and Q ₂ shown in FIG. 4 (a), the center point of the pupil coordinates Then, the person's lines of sight s ₁ and s ₂ are calculated.

  FIG. 5 is a schematic diagram illustrating an example of an operation for generating the human line-of-sight information 112A.

From visual axis detecting means 102A includes a recognized user 2A and 2B of the eye center point coordinates by sight recognition frame Q ₁ and Q _2, and the coordinate of the center point of the pupil, as shown in FIG. 5, the user calculate the person gaze _{s 1} and _{s 2} from 2A and 2B for figures 4C~4E of the display unit 13A, and outputs the human gaze information 112A containing these _{s 1} and _{s 2.}

  Next, the human gaze information transmitting unit 103A transmits the human gaze information 112A output from the gaze detection unit 102A to the image display device 1B via the communication unit 14A.

  The image display device 1B also performs the above-described operation, and the human visual line information receiving unit 104A receives the human visual line information 112B transmitted from the image display device 1B via the communication unit 14A.

(4) Person Image Information Generation Operation Next, the person image information generation unit 105A performs person image information based on the person position information 111A output by the person detection unit 101A and the person line-of-sight information 112B received by the person line-of-sight information reception unit 104A. 113A is generated. Hereinafter, the human image information generation operation will be described in detail.

  6A to 6D are schematic diagrams illustrating an example of the operation of the human image information generating unit 105A.

  First, as shown in FIG. 6A, the person image appearance generation unit 105a generates a person image appearance 41 other than the eyes 41l and 41r. The person image appearance 41 uses an image such as an avatar predetermined for each user. The human figure appearance 41 does not necessarily have to be the upper body, and the range is not particularly limited as long as the eyes 41l and 41r are included, such as the whole body or only the face.

  Next, the pupil position determination unit 105b performs the pupil positions 42 of the person images 4C to 4E based on the person line-of-sight information 112B indicating the lines of sight of the users 2C to 2E and the person position information 111A indicating the positions of the users 2A and 2B. Respectively. That is, it is determined whether the users 2C to 2E are viewing the person images 4A or 4B based on the person line-of-sight information 112B, and the users 2A or 2B corresponding to the person images 4A or 4B viewed by the users 2C to 2E are determined. Is obtained from the person position information 111A, and the pupil positions 42 of the eyes 41l and 41r are determined so that the person images 4C to 4E see the person position of the user 2A or 2B.

  Next, the pupil shape determining means 105c, based on the person line-of-sight information 112B indicating the lines of sight of the users 2C to 2E and the person position information 111A indicating the positions of the users 2A and 2B, the pupil shapes 43 of the person images 4C to 4E. Respectively. The operation for determining the pupil shape 43 will be described below. As will be described below, the pupil shapes on the left and right sides of the eyes are strictly different, but the same shape may be used.

  FIG. 7 is a schematic diagram showing the relationship between the line of sight of the human image and the pupil shape.

The eye 410 of the human image 4D (4C, 4E) virtually located at a distance D from the screen surface 130A of the display unit 13A is viewed from the front of the screen surface 130A as viewed from the human image 4D (4C, 4E) (x = 0). when looking at user 2A any), that is, when a person gaze _{s 1a,} when a user 2A Guile in person gaze _{s 1a} direction a distance _{L a} from the screen surface 130A, toward the line of sight to the user 2A The pupil shape 43a is approximately a perfect circle, its outer edges are e _1a and e _2a , and the pupil position 42a is the center of the eye 41l.

Further, when the eye 410 is looking at the user 2B on the left hand of the angle θ from the front when viewed from the person image 4D (4C, 4E), that is, on the right side in the drawing and the person's line of sight s _1b , When the x = _{x 1} of the screen surface 130A and user 2B Guile in person gaze _{s 1b} direction a distance _{L b,} the pupil position 42 is x = _{x 1,} its outer edge is the _{e 1b} and _{e 2b,} pupil shape 43b Is an ellipse of e _2b −x ₁ <x ₁ −e _1b , and the pupil position 42b is on the right side of the eye 41l in the drawing. Since the pupil shape 43b looks like a perfect circle when viewed from the user 2B, the user 2B perceives it as a pupil shape in front view.

Incidentally, although the eyes 41l near the x = _{x 1} for purposes of explanation, that no actual displays an eye 41l near the x = _{x 1,} the center of the x = 0 in pupil shape 43b eyes 41l Is displayed. Also, when the eye 410 is looking upward or downward from the front in the direction orthogonal to the drawing, the pupil shape is deformed in the vertical direction by applying the above-described operation.

  Next, the eye image generation unit 105d generates the images of the eyes 41l and 41r by arranging the pupil shape 43 at the pupil position 42 determined by the pupil position determination unit 105b of the eyes 41l and 41r.

  Next, the image synthesizing unit 105e generates a person image 40 by synthesizing the person image appearance generating unit 105a and the eyes 41l and 41r for each of the users 2C to 2E, and the person image 40 is converted into the person image information 113A. Output as.

  Next, the display unit 13A displays the person image information 113A output by the image composition unit 105e of the person image information generation unit 105A.

  8A to 8C are schematic diagrams illustrating display examples of the human images 4C to 4E. For the sake of explanation, only the face portions of the person images 4C to 4E are shown.

  As shown in FIG. 8A, when the eyes 41l and 41r are looking at the front (x = 0), the pupil position 42a is the center of the eyes 41l and 41r, and the pupil shape 43a is a perfect circle.

Further, as shown in FIG. 8B, when the eyes 41l and 41r are looking at the right side (x = _xb ) of the drawing, the pupil position 42b is the right side of the eyes 41l and 41r, and the pupil shape 43b is An ellipse having a major axis in the lateral direction.

  Further, as shown in FIG. 8C, when the eyes 41l and 41r are looking at the lower left of the drawing, the pupil position 42c is the lower left of the eyes 41l and 41r, and the pupil shape 43b has a long axis in the lower left direction. It has an ellipse.

Note that the line-of-sight fluctuation generating unit 106A temporarily changes the line-of-sight information 112B received by the human line-of-sight information receiving unit 104A in a random timing and a random direction. If it demonstrates using the example shown in FIG. 8, when the eyes | visual_axis of person image 4C-4E is a front as shown to Fig.8 (a), it will seem that the user 2A has looked at the user 2A. In addition, it is perceived that the user 2B who is out of the front surface of the screen surface 130A is looking toward the user 2B. Therefore, the temporary line of sight in Randanmu timing, for example, the person gaze _{s 1b,} that is, the pupil shape 43b shown in FIG. 8 (b) (pupil position 42b). By doing so, the user 2B perceives that the line of sight is temporarily directed, and perceives that the line of sight has deviated when returning to the original state (FIG. 8A). Even if the lines of sight of the person images 4C to 4E are in front, they are not perceived as if they are looking toward the user 2B.

[Second Embodiment]
FIG. 9 is a schematic diagram illustrating a configuration example of an image display apparatus according to the second embodiment.

  This image display device 1C is installed alone and includes a camera 12C and a display unit 13C. The image display device 1 </ b> C uses a person image 4 </ b> H displayed on the display unit 13 </ b> C, for example, in response to a question from the users 2 </ b> I to 2 </ b> K, a predetermined guidance by aligning the line of sight with the questioned users 2 </ b> I to 2 </ b> K. Automatically responds to

  The image display device 1C detects the positions of the users 2I to 2K by the person detection unit 101A based on the image information of the users 2I to 2K photographed by the camera 12C in order to realize the above-described guidance operation. In order to adjust the line of sight to one of the users 2I to 2K located at the position, the human image information generation unit 105A applies the operation of the first embodiment to change the pupil shape and the pupil position.

  In order to realize the above-described operation, at least the image receiving means 100A, the person detecting means 101A, and the person image information generating means 105A shown in FIG. 2 are provided, and further, it is determined to which user the question has been received. And a sound source direction detecting unit and a reproducing means for reproducing guidance information for a question are further required.

[Other embodiments]
The present invention is not limited to the above embodiment, and various modifications can be made without departing from the gist of the present invention. For example, the person image information generation unit 105A may use images of the users 2C to 2E that are conversation partners captured by the camera 12B instead of the person image appearance 41. In that case, the area corresponding to the eyes 41l and 41r is detected, and the area is replaced with the eye image generated by the eye image generating means 105d.

  The image display program 110A can be provided by being stored in a storage medium such as a CD-ROM, and can be downloaded from a server device connected to a network such as the Internet to a storage unit in the device. Good. Also, some or all of the image receiving unit 100A, the person detecting unit 101A, the gaze detecting unit 102A, the human gaze information transmitting unit 103A, the human gaze information receiving unit 104A, the human image information generating unit 105A, and the gaze fluctuation generating unit 106A It may be realized by hardware such as. Note that each step shown in the operation description of the above embodiment can be changed in order, omitted or added.

DESCRIPTION OF SYMBOLS 1A, 1B, 1C ... Image display apparatus, 2A-2E, 2I-2K ... User, 4 ... Network, 4A-4E, 4H ... Person image, 5 ... Image display system, 10A ... Control part, 11A ... Memory | storage part, 12A ... Camera, 13A ... Display unit, 14A ... Communication unit, 40 ... Human image, 41 ... Human image appearance, 41l ... Eye, 42 ... Pupil position, 43 ... Pupil shape, 100A ... Image receiving means, 101A ... People detection means , 102A ... gaze detection means, 103A ... person gaze information transmission means, 104A ... person gaze information reception means, 105A ... person image information generation means, 105a ... person image appearance generation means, 105b ... pupil position determination means, 105c ... pupil shape Determination means, 105d ... eye image generation means, 105e ... image composition means, 106A ... gaze fluctuation generation means, 110A ... image display program, 111A ... person position information, 11 A ... person viewing information, 112B ... person viewing information, 113A ... figures information, 120A ... image information, 130A ... screen surface, 410 ... eyes

Claims (8)

Receiving means for receiving from the outside gaze information obtained by detecting the gaze of the conversation partner on the display screen of the external display means on which the person image of the user is displayed;
A person image generating means for generating a person image of the conversation partner including a pupil having a shape corresponding to the line-of-sight information received by the receiving means;
Display means for displaying the person image generated by the person image generation means to the user;
An image display device comprising:   The person image generation means has a shape that allows the user corresponding to the person image displayed on the external display means ahead of the line of sight of the conversation partner to see the pupil of the conversation partner in front view according to the line of sight information. The image display apparatus according to claim 1, wherein a person image of the conversation partner including a pupil is generated.   The image display device according to claim 1, wherein the person image generation unit generates the person image by arranging the pupil at a position corresponding to the line-of-sight information. Further comprising detecting means for detecting the position of the user with respect to the display means;
The image display device according to claim 1, wherein the person image generation unit generates the person image of the conversation partner according to the line-of-sight information and the position of the user.   The image display apparatus according to claim 1, further comprising line-of-sight changing means for changing the line-of-sight information in different directions. Line-of-sight information generating means for detecting the line of sight of the user with respect to the display unit and generating line-of-sight information of the user;
The image display device according to claim 1, further comprising a transmission unit configured to transmit the user's line-of-sight information to the outside. Computer
Receiving means for receiving from the outside gaze information obtained by detecting the gaze of the conversation partner on the display screen of the external display means on which the person image of the user is displayed;
A person image generating means for generating a person image of the conversation partner including a pupil having a shape corresponding to the line-of-sight information received by the receiving means;
An image display program for causing the person image generated by the person image generation means to function as display means for displaying to the user. An image display system in which a first image display device and a second image display device are communicably connected,
The first image display device receives, from the second image display device, the gaze information of the conversation partner obtained by detecting the gaze of the conversation partner with respect to the display screen of the display means of the second image display device. A first person image generating unit that generates a person image of the conversation partner including a pupil having a shape corresponding to the line-of-sight information of the conversation partner received by the first reception unit; A first display unit that displays the person image of the conversation partner generated by the image generation unit to the user; and a first unit that detects the user's line of sight with respect to the display unit and generates user line-of-sight information. Line-of-sight information generating means, and first transmission means for transmitting line-of-sight information of the user to the second image display device,
The second image display device is responsive to second receiving means for receiving the user's line-of-sight information from the first image display device, and the user's line-of-sight information received by the second receiving means. A second person image generating means for generating a person image of the user including a pupil having a curved shape, and a second person image generating means for displaying the user person image generated by the second person image generating means to the conversation partner. An image having two display means, second line-of-sight information generating means for generating line-of-sight information of the conversation partner, and second transmission means for transmitting line-of-sight information of the conversation partner to the first image display device Display system.