JPH1124603A - Information display device and information collecting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a new device or system utilizing a line-of-sight detecting device, particularly, a display device or information collecting device capable of grasping the frequency of visual confirmation of a person to a prescribed piece of information. SOLUTION: A camera 10 is arranged toward the front of a display part 18, and a line-of-sight detecting part 12 detects the line of view of a person on the basis of the image obtained by this camera 10. When the steady gazing point is detected in the display part 18, a prescribed piece of information is displayed in this steady gazing point position. Otherwise, when the steady gazing point is detected, a prescribed piece of information may be displayed at this timing. Further, when the steady gazing point is detected, the number of detecting this steady gazing point is counted and stored in a collected information memory part 16.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device having a line-of-sight detecting function, and more particularly to a display device for displaying predetermined information and an information collecting device for collecting predetermined information.

[0002]

2. Description of the Related Art Hitherto, various methods for detecting the direction of a line of sight of a human have been developed, and a method of displaying a cursor or the like at a gaze position of a line of sight has been performed. The line-of-sight detection methods are classified into a so-called non-contact type and a contact type, and there are the following two typical examples of the non-contact type. One of them is disclosed in
No. 322,796. In this method, an edge extraction process is performed on image data obtained by photographing a human face portion. Then, after the eye portion is cut out, the position of the iris in the eye is extracted in both the horizontal and vertical directions. Then, the horizontal standard pattern and the vertical standard pattern are matched to calculate the line of sight. Another example is disclosed in JP-A-5-205030. In this method, by irradiating near-infrared light to the human eye, a reflection angle when the near-infrared light is reflected by a human retina is calculated, and a gaze direction is calculated. There are various types of display devices, for example, large display devices such as liquid crystal projectors and large plasma displays. Then, a commercial for a predetermined advertisement is flown on such a large-sized display device.

[0003]

Here, there has been a demand for a device or system that effectively utilizes the above-mentioned gaze detection device. In addition, when a commercial is played on a conventional large display device or the like, it is unknown whether a nearby person is watching the commercial, and there is a problem that the advertising effect cannot be sufficiently grasped. Therefore, the present invention aims to provide a new device and system using a gaze detection device, and particularly to provide a display device and an information collection device capable of grasping the frequency of human recognition. is there.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and, first, is an information display device for displaying predetermined information, which displays information. It is characterized by comprising a display unit, a line-of-sight detection unit that detects a line of sight, and a display control unit that controls display on the display unit based on the detection result of the line-of-sight detection unit. In the information display device having the first configuration, the line-of-sight detecting means detects the line of sight. Then, based on the detection result, the display control means controls display on the display means. Therefore, since the display is controlled in accordance with the line of sight of the person viewing the display means, the information can be reliably transmitted to the person. Secondly, in the first configuration, the line-of-sight detecting means has a photographing means for photographing at least a part of a viewable position of the display means, and the line-of-sight detecting means is provided by the photographing means. It is characterized in that a line of sight is detected from a captured image.

Thirdly, in the first or second configuration, the display control means controls a display position of predetermined information to be displayed based on a detection result of the visual line detection means. And Therefore, the information can be reliably transmitted by, for example, displaying the information at a position where the person in the line of sight can easily see. Fourth, in the third configuration,
The display control means displays predetermined information at the gazing point position when a gazing point in which the detected line of sight is stopped at any position on the display means for a predetermined time is detected. . Therefore, since the information is displayed at the gazing point position, the information can be reliably transmitted to the person having the line of sight.

Fifth, in any one of the first to fourth configurations, the display control means may display predetermined information on the display means based on a detection result of the visual line detection means. Is controlled. Therefore, by controlling the display timing, it is possible to transmit information reliably. Sixth, in any one of the first to fifth configurations, the display control unit estimates a distance between a display screen of the display unit and a person whose line of sight has been detected. The size of the display area of the information to be displayed is controlled according to the distance. Therefore, by increasing the size of the display area as the distance from the display means increases, it is possible to make the information easily visible to a person having that line of sight.

[0007] In a seventh aspect, in any one of the first to sixth configurations, the information display device further comprises a line of sight detected by the line of sight detection means.
It has an information collecting means for collecting predetermined information. Therefore, it is possible to obtain information such as how many persons have viewed the information displayed on the display means. Eighthly, in the seventh configuration, the information collection means counts the number of gazing points at which the detected line of sight stays for a predetermined time.

A ninth aspect is an information collecting apparatus for collecting predetermined information, comprising: photographing means for photographing an arbitrary subject; and visual line detecting means for detecting a visual line based on an image photographed by the photographing means. And information collecting means for collecting predetermined information based on the detection result of the visual line detecting means. In the information collection device having the ninth configuration, the gaze detection unit detects the gaze based on the image captured by the imaging unit. Then, the information collecting device collects predetermined information based on the detection result. Therefore, by arranging predetermined information or the like in the vicinity of the photographing means so as to be visually recognizable, it is possible to obtain information such as how many people have seen the information.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. An information display device A according to the present invention is configured as shown in FIG.
, A line-of-sight detection unit 12, a presentation information storage unit 14, a collection information storage unit 16, a display unit 18, and a determination unit 20.

Here, the camera 10 as the photographing means photographs at least a part of the viewable position of the display unit 18, and mainly photographs the front part of the display unit 18. This camera 10 is constituted by a CCD camera or the like. The gaze detection unit 12 detects the gaze direction of the person when the image data obtained by the camera 10 includes a human face and faces the display unit 18. Specifically, edge extraction is performed on image data obtained by shooting, and when a human face is captured, the direction of the iris in the eyes is detected. Details will be described later. When the gaze direction is detected, the gaze direction data for the gaze direction is output to the determination unit 20. This gaze detection unit 12 is actually
It comprises a storage unit storing a program for performing line-of-sight detection and a CPU for performing predetermined processing according to the program.

The presentation information storage unit 14 stores information to be displayed on the display unit 18.
For example, a plurality of commercial images are stored. Further, the collected information storage section 16 stores the collected information. The display unit 18 is for displaying predetermined information, and may be of any type such as a liquid crystal projector or a plasma display.

The determination unit 20 controls the display of the information stored in the presentation information storage unit 14 on the display unit 18 based on the line-of-sight direction detected by the line-of-sight detection unit 12. The predetermined information collected based on the detected point of interest is stored in the collected information storage unit 16. The determination unit 20 includes a storage unit that stores a program for performing display control on the display unit 18, a program for storing predetermined information in the collected information storage unit 16, a CPU for performing arithmetic processing, and the like. Be composed. A detailed control method will be described later. The determination unit 20 functions as a display control unit. Further, the collected information storage unit 16 and the judgment unit 20 function as information collecting means. The CPU in the line-of-sight detection unit 12 and the C in the determination unit 20
The PU may be constituted by one CPU.

The configuration shown in FIG. 1 further includes an audio output unit such as a speaker and an audio data storage unit for storing audio data to be output from the audio output unit.
And the determination unit 20 may control the output voice according to the detection result from the visual line detection unit 12.

An example of the appearance of the information display device A shown in FIG. 1 is shown in FIG. 2. The display unit 18 is configured as a large display. 10 are installed. The information display device A is fixed at a predetermined place. Note that the camera 10 and the line-of-sight detection unit 12 function as the line-of-sight detection unit. In the present embodiment, the line of sight detecting means is described as being configured by the camera 10 and the line of sight detecting unit 12 as described above. However, the present invention is not limited to this. It may be configured.

The operation of the information display device A having the above configuration will be described with reference to FIG. First, the camera 10
Shoots a predetermined subject. In the case of the present embodiment, since the information display device A is fixed, a predetermined subject to which the lens system of the camera 10 is pointed is photographed. Then, the image captured by the camera 10 is sent to the visual line detection unit 12. The line-of-sight detection unit 12 performs an edge extraction process on the captured image (S10). Then, after the edge extraction processing, it is first detected whether or not there is a human face (S
11). That is, the image subjected to the edge extraction processing is compared with the standard pattern image to estimate whether or not there is a human face. The determination of a human face may be performed in consideration of skin color information. The moving object may be detected from the difference image between frames, and the human face may be determined by comparing the moving object with the standard pattern image.

When it is detected that there is a human face, the line of sight is detected (S12). Here, the gaze direction is detected.
That is, from the edge information obtained by extracting the edges, the vertical position and the horizontal position of the eyes in the detected human face are estimated to cut out the image of the eye, and the cut out image and The position of the iris in the eyes is extracted in the horizontal and vertical directions from the grayscale image. afterwards,
The gaze direction is detected by comparing the black standard standard pattern in the horizontal direction and the standard pattern in the vertical direction.

The direction of the detected line of sight is displayed on the display unit 1.
8 is determined (S13). That is, the spatial position of the line of sight is detected. That is, the spatial position of the line of sight is detected based on the spatial coordinate position of the eye of the person in the captured image and the detected direction of the line of sight, and it is determined whether the person is looking at the range of the display unit 18. In addition,
The detection of the spatial coordinate position of the eye is performed as follows. That is, the coordinates in the X direction and the Y direction shown in FIG. 2 can be detected by the coordinates in the photographed two-dimensional image, and the coordinates in the Z direction can be, for example, a method of estimating from the size of the face or the distance. There is a method of detecting by a sensor. The coordinates in the Z direction may be calculated based on the time from when a predetermined light is emitted to when the light is reflected back on the face, eyes, and the like and returns.

As described above, since the position of the line of sight in the space is determined based on the spatial position of the eye and the direction of the line of sight, it is determined whether or not the line of sight passes through the display surface of the display unit 18. Specifically, the line of sight is determined in advance as coordinates (X1, Y1), (X
2, Y1), (X1, Y2), and (X2, Y2). Specifically, FIG.
In this case, Mr. Ko and Mr. O are looking at the display unit 18, and Mr. Hei is not looking at the display unit 18. The processing from step S10 to step S13 is performed by the visual line detection unit 12.

As described above, when the line of sight is directed to the display unit, it is detected whether or not a point of gaze is detected (S14). That is, the determination is made based on whether or not the line of sight directed to any point on the display unit 18 is stationary for a certain period of time. In other words, even if the line of sight is directed toward the display unit 18, the user simply turns his / her line of sight, or simply passes through the line of sight to turn the line of sight to another place other than the display unit 18. Since it does not mean that the user is visually recognizing a certain part of the display unit 18, it is determined whether the visual line direction is fixed at a predetermined position on the display unit 18 for a predetermined time.

When the point of interest is detected, a predetermined display is displayed on the display unit 18 (S15). This display unit 1
The mode of the predetermined display on 8 will be described later. If a point of gaze is detected as described above, it is counted (S16). Information on the counted number is stored in the collected information storage unit 16.

Note that the method of detecting the direction of the line of sight and the method of detecting the gazing point are not limited to the above methods, but may be other methods.
For example, the detection of the presence or absence of a human face may be performed in the same manner as described above, and the detection of the line of sight may be performed based on the reflection angle by irradiating near-infrared light.
Further, the above method and this method using near-infrared light may be used in combination. The coordinates in the Z direction may be detected based on the arrival time at which the near-infrared light is reflected and returned. Also,
In the above description, the gaze is detected, and the gaze point is detected from the gaze. However, the gaze is not limited to this. The gaze detection unit 12 detects the gaze point as the gaze, and the gaze is detected. In this case, a predetermined display may be displayed on the display unit 18. Further, not only when the gazing point is detected but also when the sight line is simply detected by the sight line detection unit 12, the predetermined information may be displayed (S15) and the counting may be performed (S16). ).

Next, a specific example of a predetermined display when a point of interest is detected will be described. That is, step S15 in FIG. 3 will be described in further detail. First, a first specific example will be described. Various commercial images are displayed on the display unit 18. For example, if a commercial of Company A is broadcasted, then a commercial of Company B is broadcasted, and then a commercial of Company B is broadcasted, and then a commercial of Company C is broadcasted.

In this state, as shown in FIG. 2, it is assumed that Mr. Ko looks at the display section 18 and detects the point of regard a. Then, as shown in FIG. 4, predetermined information is displayed to the viewer in the display area a-1 centered on the point of gaze point a. That is, the predetermined information is displayed at the timing when the gazing point a is detected. The predetermined information is preferably information that the viewer most wants to impress, for example, a product name. In other words, the predetermined information to be displayed is displayed in such a manner as to overwrite the image displayed on the entire display unit 18. Accordingly, the sound is output in accordance with the image displayed on the entire display unit 18 and the display area a
No information-specific sound displayed at -1 is output. Similarly, when Mr. Otsu looks at the display unit 18 and detects the point of interest b, the display area b-
1 and the predetermined information is displayed in the same manner. When the point of interest is no longer detected, the display in the display area is stopped. In other words, in the above example, Mr. Ko moves his line of sight and
When is moved, the display in the display area a-1 stops. If the line of sight moved by Mr. Ko is fixed at another position for a predetermined time and the point of interest a ′ is detected, the above-mentioned predetermined information is displayed again at the position of the point of interest a ′. When the line of sight of the same person moves on the display unit 18, the predetermined information may be moved following the movement of the line of sight. In this way, the product name and the like can be more deeply impressed to the watcher, and the advertising effect can be enhanced.

Next, a second specific example will be described. In the second specific example, display is started when a gazing point is detected. For example, normally, images such as a background image and a landscape image are displayed on the display unit 18 (there is no need to display anything), and when a gazing point of a certain person is detected, a predetermined image is displayed on the entire display unit 18. Broadcast information. That is,
When Mr. Ko comes in front of the display unit 18 and looks at the display unit 18 and detects the gazing point a, a predetermined commercial image is displayed on the entire display unit 18. For example, as shown in FIG.
The commercial of Company A is output, and the commercial of Company B is continuously output as long as the point of gaze a is detected. As the audio, an audio corresponding to the commercial video is output. Then, when the gazing point is no longer detected due to Mr. Ko moving his line of sight or moving himself, the display on the display unit 18 and the output of the sound are stopped.

If a point of interest of another party is detected while a commercial image displayed by the detection of the point of interest of Mr. Ko is being output, the point of interest of Mr. Ko is detected. As long as “a” is detected, the output is performed at the timing at which the gazing point “a” is detected. Therefore, as shown in FIG. 5, even if another point of gaze b is detected while the point of gaze a is detected, when the point of gaze b has left before the point of gaze a has left, Is output as it is at the timing when the gazing point a is detected. In addition, if the point of interest a of Mr. Ko has left, at that time, if another point of interest is detected,
Start output again. In this case, a commercial that has not been output until the end (in FIG. 5, a commercial of Company B) may be output from the beginning, or a commercial of Company A may be started.

The following processing may be performed when a gazing point of another person is detected while a commercial image displayed by detecting a gazing point of a certain person is being output. Good. In other words, the commercial image is displayed on the entire display unit 18 while one point of interest is detected, and the display area is reduced and displayed when another point of interest is further detected. In other words, when only the point of gaze a of Mr. Ko is detected, a commercial image is displayed on the entire display unit 18 and the point of gaze b of Mr. B is detected while the point of gaze a of Mr. K is detected. In this case, the image displayed for Mr. Ko is reduced and displayed in the display area a-2 centered on the gazing point a, and the display area b centered on the gazing point b of Mr. At -2, display of commercial videos for Mr. Otsu is started. In this case, since the display in the display area a-2 and the display in the display area b-2 are performed at different timings, it is preferable that no sound is output.

Next, a third specific example will be described. In the third specific example, display is started when a gazing point is detected as in the second specific example, but the following points are different. That is, when a gazing point of a certain person is detected, predetermined information is displayed in a display area of a predetermined range centered on the gazing point. For example, usually, the display unit 18
In the case where a point of interest a of Mr. Kou is detected, a commercial image is displayed in a display area a-3 centered on the point of interest a. Then, when the point of gaze b of another Otsu is detected, the display is performed in the display area b-3 centered on the display area b-3 centered on the point of gaze b. The display in each display area is
It is performed at the timing when each point of regard is detected.

When the point of interest is no longer detected, the display in the display area is stopped. That is, in the above example, when Mr. Ko moves his line of sight and the gazing point a moves, the display area a-
The display on 3 stops. Similarly to the first specific example, when the line of sight moved by Mr. Ko is fixed at another position for a predetermined time and the point of interest a ′ is detected, the position of the point of interest a ′ is again detected. Display predetermined information. When the line of sight of the same person moves on the display unit 18, the predetermined information may be moved following the movement of the line of sight.

According to each of the second and third specific examples, the display timing is controlled and the display is started when the point of interest is detected, so that the information can be transmitted to the observer without fail. . In each of the above specific examples, when information is displayed in different display areas according to the points of interest, if the display area of one point of interest overlaps the display area of another point of interest, the display areas do not overlap. It is preferable to display. For example, in the case of the first specific example, FIG.
As shown in the figure, the gazing point a and the gazing point c detected after the gazing point a are detected, and the display area a-
When 1 and the display area c-1 of the gazing point c overlap,
The display area of the gazing point c detected later is displayed in the display area a.
Displayed shifted from -1.

In each of the above embodiments, when information is displayed in different display areas depending on the point of regard, the angle of view of the display area may be changed according to the distance from the display screen of the display unit 18. Good. That is, the size of the display area is increased as the distance between the display unit 18 and the display screen increases. For example, in the case of the third specific example, if the distance between Mr. Ko and the display screen of the display unit 18 is X, and the distance between Mr. B and the display screen of the display unit 18 is Y, the distance is determined according to the distance. To control the angle of view. In other words, when the distance X is longer than the distance Y, as shown in FIG. 9, the display area a-3 centered on the gazing point a of Mr. Ko is centered on the gazing point b of Otsu. It is made larger than the display area b-3 ′. Note that a method of estimating the distance between the display screen and a person such as Mr. Ko or Oto from the height or face size of the person in a captured image is conceivable.

In each of the above embodiments, when a plurality of lines of sight are detected, one image may be displayed in the center of the display unit 18 regardless of the gaze position. Also, an image may be displayed at the position where the point of gazing point is the largest. As described above, according to the above specific examples,
When the fixation point is detected, predetermined information is displayed in response to the detection of the fixation point, so that the information can be effectively transmitted to the fixator.

Next, the counting of the detected points of interest will be described. That is, step S16 in FIG. 3 will be described in more detail. This counting starts when the point of interest is detected. Therefore, if the number of gaze points is counted in a state where each commercial is sequentially displayed, it is possible to know how many people are watching the commercial. That is, as shown in FIG. 10, the number of gazing points while the commercial of Company A is displayed is counted,
Also, if the number of points of interest is counted while the commercials of Company B are being displayed, the numbers are sequentially counted and stored in the collected information storage unit 16, so that the number of persons watching each commercial can be grasped. To collect information.

A point of gaze is detected when a certain person looks at a certain position of the display unit 18. Thereafter, the person shifts his / her gaze slightly to another position on the display unit 18 and fixes his / her gaze at that position for a predetermined time. In this case, a new gazing point is detected, but this is counted as a gazing point different from the previous gazing point. However, you can track the person ’s gaze,
In addition, if the gaze of the same person is known, for example, by storing data of the face of the person with that gaze, the gaze may be counted as one gaze point as a whole.

In addition, information can be collected by displaying a plurality of images at a time on one image on the display unit 18 and counting the points of interest. For example, as shown in FIG. 11, an image S1 of the product A, an image S2 of the product B, and an image S3 of the product C are displayed on the display unit 18. Then, it counts which of the image S1 of the product A, the image S2 of the product B, and the image S3 of the product C is located at the point of gaze of the person viewing the display unit 18. Then, the number of gaze points counted for each product is stored in the collected information storage unit 16. Thereby, information such as which product is popular can be obtained effectively.

Next, an information collecting apparatus according to this embodiment will be described. As shown in FIG. 12, the information collecting apparatus B according to the present embodiment includes a camera 110 and a gaze detecting unit 112.
And a collected information storage unit 116 and a determination unit 120. Here, the camera 110 captures an image of a predetermined subject similarly to the information display device A. Further, the line-of-sight detection unit 112 detects the line-of-sight direction and the point of gaze of the human. Further, the collected information storage unit 116 stores the collected information. Further, the determination unit 120 stores predetermined information in the collection information storage unit 116 based on the point of gaze detected by the gaze detection unit 112, and stores the predetermined information in the collection information storage unit 116. It comprises a storage unit for storing programs and the like, a CPU for performing arithmetic processing, and the like.

The operation and use state of the information collecting apparatus B having the above configuration will be described. The camera 110 in the information collecting device B is installed in a show window, for example, as shown in FIG. This and the judgment unit 12
At 0, various products are displayed in the show window, and information about the coordinate area of the gazing point corresponding to each product is held in the determination unit 120. By determining whether or not the person is watching the product, it is possible to know whether or not the person is watching the product.

That is, the operation of the information collecting apparatus B in the case shown in FIG. 13 will be described.
As in the cases shown in 10 to S12, when the direction of the line of sight of the human is detected, it is determined whether or not the direction of the line of sight is in the coordinate area of each product. Then, when the product is oriented in the coordinate area of one of the products, it is determined whether or not the gazing point is detected. When the gazing point is detected, the product is counted. For example, A
If the point of gaze is detected within the coordinate range of the point of gaze for the product, it is determined that a certain person is watching the A product, and the count of the A product in the collected information storage unit 116 is incremented by one. That is, gazing points are grouped and counted for each group.

As described above, by detecting the frequency at which a plurality of people look at a product, information such as which product is popular can be obtained effectively. Note that, in the above description, the portion described as the case where the gazing point is detected may be applied to a case where a mere line of sight is detected.

[0039]

According to the information display device of the first aspect of the present invention, the display is controlled in accordance with the line of sight of the person watching the display means, so that the information can be transmitted to the person without fail.

In particular, according to the information display device of the third aspect, the display position of the predetermined information to be displayed is controlled based on the detection result of the line-of-sight detection means, so that the position of the line-of-sight person is easy to see. The information can be conveyed reliably, for example, by displaying the information. In particular, according to the information display device of the fifth aspect, the display timing of the predetermined information on the display means is controlled based on the detection result of the visual line detection means, so that the information can be transmitted reliably. . Also,
In particular, according to the information display device of the sixth aspect, the larger the distance from the display means, the larger the size of the display area, so that the information can be easily viewed by the person with the line of sight.

According to the information display device of the present invention, since the information display device has information collection means for collecting predetermined information based on the line of sight detected by the line of sight detection means, the information is displayed on the display means. Information such as how many people have viewed the information. According to the information collecting apparatus of the ninth aspect, by arranging the predetermined information or the like in the vicinity of the photographing means so as to be visually recognizable, it is possible to obtain information such as how many people saw the information. it can.

[Brief description of the drawings]

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

FIG. 2 is an explanatory diagram for explaining an appearance and an operation state of the information display device according to the embodiment of the present invention.

FIG. 3 is a flowchart for explaining the operation of the information display device.

FIG. 4 is an explanatory diagram illustrating a display example on a display unit in the information display device.

FIG. 5 is an explanatory diagram for explaining an operation state of the information display device.

FIG. 6 is an explanatory diagram showing a display example on a display unit in the information display device.

FIG. 7 is an explanatory diagram illustrating a display example on a display unit in the information display device.

FIG. 8 is an explanatory diagram illustrating a display example on a display unit in the information display device.

FIG. 9 is an explanatory diagram illustrating a display example on a display unit in the information display device.

FIG. 10 is an explanatory diagram for explaining an operation state of the information display device.

FIG. 11 is an explanatory diagram illustrating a display example on a display unit in the information display device.

FIG. 12 is a block diagram illustrating a configuration of an information collection device according to an embodiment of the present invention.

FIG. 13 is an explanatory diagram for explaining a use state of the information collection device according to the embodiment of the present invention.

[Explanation of symbols]

 A information display device B information collection device 10, 110 camera 12, 112 gaze detection unit 14 presentation information storage unit 16, 116 collection information storage unit 18 display unit 20, 120 determination unit

Claims (9)

[Claims] 1. An information display device for displaying predetermined information, comprising: display means for displaying information; gaze detection means for detecting gaze; and display on display means based on a detection result of the gaze detection means. An information display device, comprising: display control means for controlling the information display. 2. The sight line detecting means has photographing means for photographing at least a part of a visible position of the display means,
2. The information display device according to claim 1, wherein the line of sight detecting unit detects a line of sight from an image captured by the image capturing unit. 3. The information display device according to claim 1, wherein the display control means controls a display position of predetermined information to be displayed based on a detection result of the visual line detection means. 4. The display control means displays predetermined information at the position of the gazing point when the gazing point where the detected line of sight is stopped at any position on the display means for a predetermined time is detected. The information display device according to claim 3, wherein: 5. The display control device according to claim 1, wherein the display control means controls display timing of predetermined information on the display means based on a detection result of the visual line detection means. Information display device. 6. The display control means estimates a distance between a display screen of the display means and a person whose line of sight has been detected,
6. The information display device according to claim 1, wherein a size of a display area of information to be displayed is controlled according to the distance. 7. The information display device according to claim 1, further comprising information collecting means for collecting predetermined information based on the line of sight detected by said line of sight detecting means. Or the information display device according to 5 or 6. 8. The information display device according to claim 7, wherein the information collecting means counts the number of gazing points at which the detected line of sight has stopped for a predetermined time. 9. An information collecting apparatus for collecting predetermined information, comprising: photographing means for photographing an arbitrary subject; gaze detecting means for detecting a gaze based on an image photographed by the photographing means; An information collection unit for collecting predetermined information based on a detection result of the unit.