JP5150610B2 - Gaze determination device - Google Patents

Description

  The present invention relates to a gaze determination apparatus.

  Conventionally, for example, when the difference between the position information of the in-vehicle device operated by the operator and the position information corresponding to the line of sight of the operator at the time of this operation is less than a predetermined value, the line of sight to calibrate the detection value of the eyeball sensor A detection device is known (see, for example, Patent Document 1).

JP 2007-259931 A

  By the way, according to the eye gaze detection device according to the above-described conventional technology, in order to calibrate the detection value of the eyeball sensor, the operator needs to operate the in-vehicle device, and there is a problem that the timing for performing the calibration is limited. Arise. In addition, there is a problem in that it is troublesome because an intentional operation by an operator is required for calibration.

  The present invention has been made in view of the above circumstances, and an object thereof is to provide a gaze determination apparatus capable of appropriately improving the convenience of calibration for a gaze target determination process based on a line-of-sight detection result.

  In order to solve the above-described problems and achieve the object, the gaze determination device according to the first aspect of the present invention is an imaging unit that captures the eyes of the driver seated in the driver's seat and outputs an image (for example, implementation) And a line-of-sight detection means (for example, a line-of-sight detection unit in the embodiment) for detecting the driver's line-of-sight direction based on the image output from the imaging means and outputting a detection result 21), a storage unit (for example, the first region storage unit 23 in the embodiment) that stores an existing region for each of at least one on-vehicle device as the first region, and the line-of-sight detection unit that outputs the Gaze determination means for determining that the driver is gazing at the in-vehicle device corresponding to the first area when the line-of-sight direction of the detection result intersects the first area stored in the storage means. (For example, in the embodiment A gaze determination unit comprising: a gaze determination unit 22), wherein the first area for each in-vehicle device is temporarily enlarged in the vicinity of the in-vehicle device, and an enlarged result is output as a second region for each in-vehicle device. An area enlarging unit (for example, the area enlarging unit 24 in the embodiment) and the line-of-sight direction of the detection result output from the line-of-sight detecting unit intersect the second area output from the area enlarging unit. In this case, the storage unit (for example, the coordinate position storage unit 25 in the embodiment) that stores the coordinate position corresponding to the line-of-sight direction for each on-vehicle device, and the on-vehicle device stored in the storage unit A storage number determination unit (for example, a storage number determination unit 26 in the embodiment) that determines whether or not the number of stored coordinate positions is greater than or equal to a predetermined number and outputs a determination result, and outputs from the storage number determination unit Said size In the result, when the stored number is equal to or greater than a predetermined number, the central position calculating means for calculating the central position of the coordinate position for each in-vehicle device and outputting the calculation result (for example, the central position calculating unit in the embodiment) 27) and the central coordinate position of the first area for each on-vehicle device stored in the storage means matches the central position for each on-vehicle device of the calculation result output from the central position calculation means. And a region position changing unit (for example, the first region position changing unit 28 in the embodiment) that changes the position of the first region and outputs a change result, and the gaze determining unit includes the line of sight When the line-of-sight direction of the detection result output from the detection unit intersects the first region of the change result output from the region position change unit, the driver corresponds to the first region. In-vehicle machine It is determined that the device is being watched.

In addition, the gaze determination apparatus according to the second aspect of the present invention includes imaging means (for example, the occupant camera 11 in the embodiment) that images the eyes of the driver seated in the driver's seat and outputs the images, and the imaging Line-of-sight detection means (for example, line-of-sight detection unit 21 in the embodiment) that detects the driver's line-of-sight direction based on the image output from the means and outputs a detection result; and at least one on-vehicle device The storage means (for example, the first area storage unit 23 in the embodiment) that stores the existence area of the image and the line-of-sight direction of the detection result output from the line-of-sight detection means are stored in the storage means. Gaze determination means for determining that the driver is gazing at the in-vehicle device corresponding to the first area when intersecting the stored first area (for example, the gaze determination unit 22 in the embodiment) ) And, the first area for each of the in-vehicle devices is temporarily expanded in the vicinity of the in-vehicle device, and the expansion result is output as the second area for each of the in-vehicle devices (for example, in the embodiment) When the line-of-sight direction of the detection result output from the area enlargement unit 24) and the line-of-sight detection means intersects the second area output from the area enlargement means, the coordinate position corresponding to the line-of-sight direction Storage means (for example, the coordinate position storage unit 25 in the embodiment) and the number of stored coordinate positions stored in the storage means for each in-vehicle device is greater than or equal to a predetermined number. A storage number determination unit (for example, a storage number determination unit 26 in the embodiment) that outputs a determination result and the determination result output from the storage number determination unit determines whether the storage number is predetermined. More than a few A central position calculation means (for example, the central position calculation section 27 in the embodiment) that calculates a central position of the coordinate position for each on-vehicle device and outputs a calculation result, and is stored in the storage means. In addition, the position of the first region is determined so that the center coordinate position of the first region for each on-vehicle device matches the center position for each on-vehicle device of the calculation result output from the central position calculation means. Area position changing means (for example, the first area position changing unit 28 in the embodiment) that changes and outputs the change result, and the gaze determination means outputs the detection result output from the line-of-sight detection means. When the line-of-sight direction intersects the first area of the change result output from the area position changing means, it is determined that the driver is gazing at the in-vehicle device corresponding to the first area. And said territory The area enlarging means temporarily enlarges the first region for each of the in-vehicle devices by enlarging the peripheral portion of the first region by a predetermined amount in a shape corresponding to the peripheral portion of the in-vehicle device.
Furthermore, the gaze determination apparatus according to the third aspect of the present invention acquires acceleration of the vehicle in at least one direction and outputs an acquisition result (for example, the acceleration sensor 13 in the embodiment). And an acceleration determination unit (for example, step S31 in the embodiment) that determines whether or not the acceleration of the acquisition result output from the acceleration acquisition unit is equal to or less than a predetermined value and outputs a determination result. The storage means includes the line of sight when the acceleration is equal to or less than the predetermined value in the determination result output from the acceleration determination means out of the line-of-sight directions of the detection result output from the line-of-sight detection means. When the line-of-sight direction detected by the detection unit intersects the second region output from the region enlargement unit, a coordinate position corresponding to the line-of-sight direction is set as the vehicle-mounted device. It is stored for each.

According to the gaze determination apparatus according to the first aspect or the second aspect of the present invention, calibration is performed by changing the position of the first area, which is an existing area for each in-vehicle device, without requiring a special operation by the driver. And convenience can be improved.
In addition, since the coordinate position corresponding to the line-of-sight direction is stored only in the second area obtained by enlarging the first area in the vicinity of the vehicle-mounted device, the coordinates that do not contribute to the improvement of the calculation accuracy of the center position of the coordinate position It is possible to prevent the position from being stored, to secure a desired accuracy in the calculation result of the center position, and to prevent the processing calculation load from being unnecessarily increased.
Further, in the middle of executing calibration for changing the position of the first area, when the line-of-sight direction of the detection result output from the line-of-sight detection means intersects the second area, the driver mounts the vehicle corresponding to the second area. In the case where the determination means for determining that the device is being watched is provided, it is possible to determine whether or not the driver is paying attention to the on-vehicle device even during the execution of calibration, and the reliability of the device Can be improved.

Further, according to the gaze determination device according to the second aspect of the present invention, the coordinates of the first region are enlarged by setting the second region by enlarging the peripheral portion of the first region by a predetermined amount in a shape corresponding to the peripheral portion of the in-vehicle device. It is possible to prevent the storage of coordinate positions that do not contribute to the improvement of the calculation accuracy of the central position of the position, and to ensure the desired accuracy in the calculation result of the central position, and to increase the processing calculation load unnecessarily. Can be prevented.
Furthermore, according to the gaze determination device according to the third aspect of the present invention, the gaze direction detected when the acceleration is larger than a predetermined value, that is, when the driver's posture is not likely to be in a steady state is excluded. Since the coordinate position corresponding to the line-of-sight direction is stored, the position of the first region can be changed with high accuracy.

It is a lineblock diagram of a gaze judging device concerning an embodiment of the invention. It is a figure which shows the example of the 1st area | region and 2nd area | region which concern on embodiment of this invention. It is a flowchart which shows operation | movement of the gaze determination apparatus which concerns on embodiment of this invention. It is a flowchart which shows the process of gaze determination shown in FIG. It is a flowchart which shows the process of the gaze determination accompanying the correction | amendment shown in FIG. It is a flowchart which shows the process of the gaze determination accompanying the correction | amendment which concerns on the 1st modification of embodiment of this invention. It is a flowchart which shows operation | movement of the gaze determination apparatus which concerns on the 2nd modification of embodiment of this invention.

Hereinafter, an embodiment of a gaze determination apparatus according to the present invention will be described with reference to the accompanying drawings.
The gaze determination device 10 according to the present embodiment is configured to include an occupant camera 11, a processing device 12, and an acceleration sensor 13, for example, as illustrated in FIG. 1, and the processing device 12 further includes a gaze detection unit 21. A gaze determination unit 22, a first region storage unit 23, a region enlargement unit 24, a coordinate position storage unit 25, a storage number determination unit 26, a center position calculation unit 27, and a first region position change unit 28. And is configured.

  The occupant camera 11 can image at least the eyes of the driver sitting in the driver's seat of the vehicle, for example, in the visible light region or the infrared region, and outputs an image including the driver's eyes.

The line-of-sight detection unit 21 of the processing device 12 performs a predetermined recognition process based on, for example, the driver's eyes based on the image output from the occupant camera 11, and based on the recognized eyes, the driver's line-of-sight direction ( That is, the direction of the line-of-sight vector) is detected and the detection result is output.
Based on the detection result output from the line-of-sight detection unit 21 and the first area stored in the first area storage unit 23, the gaze determination unit 22 determines, for example, whether the driver's line-of-sight direction intersects the first area. By determining whether or not, it is determined whether or not the driver is gazing at the in-vehicle device corresponding to the first region, and the determination result is output.
Note that the gaze determination unit 22 determines, for example, whether or not the driver's line-of-sight direction intersects the second area during the execution of correction processing described later (that is, in a state where the second area is set). Thus, it is determined whether or not the driver is gazing at the in-vehicle device corresponding to the second region, and the determination result is output.

The first area storage unit 23 stores an existence area for each of various on-vehicle devices as a first area.
This first area is, for example, a predetermined existence area set in advance according to the actual position of the vehicle-mounted device (for example, the areas A1 to A4 for the door mirror, the room mirror, the navigation screen, etc. shown in FIG. 2A). It is.

The area enlargement unit 24 temporarily enlarges the first area stored in the first area storage unit 23 when executing the correction process for correcting the position of the first area stored in the first area storage unit 23. Then, the second area (for example, the areas C1 to C4 shown in FIG. 2B) is set.
The area enlarging unit 24 enlarges the first area in the vicinity of the in-vehicle device for each in-vehicle device. For example, the area enlarging the periphery of the first region by a predetermined amount in a shape corresponding to the periphery of the in-vehicle device.

Note that the shapes of the first region and the second region are not limited to the shape of the corresponding in-vehicle device, and may be various shapes such as a rectangle and an ellipse.
Further, when the first area is enlarged, for example, it may be enlarged at an appropriate magnification (1.4 times in the vertical direction and 1.2 times in the horizontal direction) or may be added appropriately (plus in the vertical direction). 15 cm and laterally plus 20 cm, etc.).

The coordinate position storage unit 25, when the line-of-sight direction of the detection result output from the line-of-sight detection unit 21 intersects with the second area for each in-vehicle device, the coordinate position on the second area corresponding to this line-of-sight direction (that is, , The coordinate position of the intersection of the line-of-sight direction and the second region) is stored for each in-vehicle device.
The coordinate position storage unit 25 determines whether or not to store the coordinate position on the second region corresponding to the line-of-sight direction based on, for example, the acceleration detection result output from the acceleration sensor 13. It is determined whether or not the acceleration detected by the acceleration sensor 13 is equal to or less than a predetermined threshold value. When the detected direction of acceleration is equal to or less than a predetermined value and the line-of-sight direction detected by the line-of-sight detection unit 21 intersects the second area, the coordinate position on the second area corresponding to the line-of-sight direction is set as the in-vehicle device. Store every time.
The predetermined threshold for acceleration is, for example, 0.5 G for longitudinal acceleration, 0.2 G for vertical acceleration, 0.4 G for horizontal acceleration, and the like.

The storage number determination unit 26 determines whether or not the number of stored coordinate positions for each in-vehicle device stored in the coordinate position storage unit 25 (for example, the stored number accumulated since the vehicle is started) is equal to or greater than a predetermined number. Is determined for each in-vehicle device, and the determination result is output.
If the number of stored coordinate positions for any one of the in-vehicle devices is greater than or equal to a predetermined number in the determination result output from the stored number determination unit 26, the center position calculating unit 27 receives the coordinate position storage unit for this in-vehicle device. A central position (for example, each of the central positions D1 to D4 shown in FIG. 2C) of the plurality of coordinate positions stored in 25 is calculated, and a calculation result is output.
The predetermined number with respect to the number of stored coordinate positions is, for example, the number of stored coordinate positions corresponding to a state in which the accumulated time obtained by accumulating the stop time in the line-of-sight direction at each coordinate position is a predetermined time.
Note that the operation for setting the second region is canceled by temporarily expanding the first region for the in-vehicle device for which the center position of the plurality of coordinate positions is calculated.

  The first region position changing unit 28 uses the center position of each in-vehicle device output from the center position calculating unit 27 as the correction position, and the center coordinates of the first region for each in-vehicle device stored in the first region storage unit 23. The position of the first area for each in-vehicle device stored in the first area storage unit 23 is changed so that the position matches the correction position, and the change result (for example, after the position change shown in FIG. 2C) Each region B1-B4, etc.) is output.

  The gaze determination apparatus 10 according to this embodiment has the above-described configuration. Next, the operation of the gaze determination apparatus 10 will be described.

First, for example, in step S01 shown in FIG. 3, the driver's line-of-sight vector is acquired.
Next, in step S02, it is determined whether or not correction processing for changing the center coordinate position of the first area stored in the first area storage unit 23 has been completed.
When the determination result is “YES”, the process proceeds to step S03, and in this step S03, a gaze determination process described later is executed, and the process proceeds to the end.
On the other hand, if this determination is “NO”, the flow proceeds to step S 04, and in this step S 04, a gaze determination process with correction described later is executed, and the flow proceeds to the end.

Hereinafter, the gaze determination process in step S03 described above will be described.
First, for example, in step S11 shown in FIG. 4, the center coordinate position of the first area for each in-vehicle device stored in the first area storage unit 23 is made to coincide with the correction position set by the correction process. The position of the first area is changed.

Next, in step S12, it is determined whether or not the line-of-sight vector intersects the first region.
When this determination result is “YES”, the process proceeds to step S13, and in this step S13, it is determined that the driver is gazing at the target (vehicle equipment) corresponding to the first region, and the process proceeds to the end.
On the other hand, if this determination is “NO”, the flow proceeds to step S 14, in which it is determined that the driver is not gazing at the target (in-vehicle device) corresponding to the first region, and the process ends. move on.

Below, the gaze determination process accompanied by the correction in step S04 described above will be described.
First, for example, in step S21 shown in FIG. 5, the second area is acquired by, for example, enlarging the first area in the vicinity of the in-vehicle device for each in-vehicle device.
Next, in step S22, it is determined whether or not the line-of-sight vector intersects the second region.
When this determination result is “NO”, the process proceeds to step S23, and in this step S23, it is determined that the driver is not gazing at the target (vehicle equipment) corresponding to the second region, and the process proceeds to the end.
On the other hand, if this determination is “YES”, the flow proceeds to step S24.

Next, in step S24, the coordinate position of the intersection of the line-of-sight vector and the second region is stored for each in-vehicle device.
Next, in step S25, it is determined whether or not the number of stored coordinate positions for any one of the in-vehicle devices is a predetermined number or more.
If this determination is “NO”, the flow proceeds to step S 28 described later.
On the other hand, if the determination is “YES”, the flow proceeds to step S26.

Next, in step S26, the central coordinate position of the first region is made to coincide with the correction position with the central position of the stored coordinate position as the correction position.
Next, in step S27, the correction process is completed.
Next, in step S <b> 28, it is determined that the driver is gazing at the target (in-vehicle device) corresponding to the second region, and the process proceeds to the end.

As described above, according to the gaze determination device 10 according to the present embodiment, the gaze determination is performed by correction that changes the position of the first area, which is an existing area for each in-vehicle device, without requiring a special operation by the driver. Calibration can be performed and convenience can be improved.
In addition, since the coordinate position corresponding to the line-of-sight direction is stored only in the second area obtained by enlarging the first area in the vicinity of the vehicle-mounted device, the coordinates that do not contribute to the improvement of the calculation accuracy of the center position of the coordinate position It is possible to prevent the position from being stored, to secure a desired accuracy in the calculation result of the center position, and to prevent the processing calculation load from being unnecessarily increased.
In the course of executing the correction process for changing the position of the first area, the driver corresponds to the second area when the line-of-sight direction of the detection result output from the line-of-sight detection unit 21 intersects the second area. By determining that the in-vehicle device is being watched, it is possible to determine whether or not the driver is watching the in-vehicle device even during the correction process, thereby improving the reliability of the device. be able to.

  Furthermore, the coordinate position that does not contribute to the improvement of the calculation accuracy of the central position of the coordinate position by setting the second area by enlarging the peripheral area of the first area by a predetermined amount in a shape corresponding to the peripheral area of the in-vehicle device Can be prevented, a desired accuracy can be ensured in the calculation result of the center position, and the processing calculation load can be prevented from being unnecessarily increased.

In the above-described embodiment, the line-of-sight vector and the second region are set only when the acceleration detected by the acceleration sensor 13 is equal to or less than a predetermined threshold as in the first modification shown in FIG. You may store the coordinate position of an intersection for every vehicle equipment.
In the first modification, when the determination result in step S22 described above is “YES”, the process proceeds to step S31.
In step S31, it is determined whether or not the acceleration detected by the acceleration sensor 13 is equal to or less than a predetermined threshold value.
If this determination is “NO”, the flow proceeds to step S 28 described above.
On the other hand, if this determination is “YES”, the flow proceeds to step S 24 described above.

According to the first modification, the gaze direction detected when the acceleration is greater than a predetermined threshold, that is, when the driver's posture is not likely to be in a steady state during turning or acceleration / deceleration is excluded. Since the coordinate position corresponding to the line-of-sight direction is stored, the position of the first region can be changed with high accuracy.
Even when the acceleration is larger than a predetermined threshold value and the coordinate position is not stored, the gaze determination is executed depending on whether the line-of-sight direction intersects the second region, The reliability of the apparatus can be improved.

In the above-described embodiment, for example, as in the second modified example shown in FIG. 7, the correction position data for each in-vehicle device is stored for each driver, and the first is based on the correction position for each driver. You may change the center coordinate position of 1 area | region.
In the second modification, first, in step S41, the driver's face is recognized based on the image output from the occupant camera 11.
Next, in step S42, it is determined whether there is a correction position corresponding to the recognized driver.
If this determination is “NO”, the flow proceeds to step S 44 described later.
On the other hand, if this determination is “YES”, the flow proceeds to step S43.

Next, in step S43, a correction position corresponding to the recognized driver is acquired, and the center coordinate position of the first area for each in-vehicle device stored in the first area storage unit 23 is made to coincide with the correction position. Thus, the position of the first area is changed.
Next, in step S44, the driver's line-of-sight vector is acquired.
Next, in step S45, the correction process for changing the center coordinate position of the first area corrected by the correction position corresponding to the first area or the driver stored in the first area storage unit 23 is completed. It is determined whether or not.
If this determination is “NO”, the flow proceeds to step S 46, in which the gaze determination process with correction described above is executed, and the flow proceeds to the end.
On the other hand, if this determination is “YES”, the flow proceeds to step S47.
In step S47, the correction position set by the correction process is stored in association with the driver.
In step S48, the gaze determination process described above is executed, and the process proceeds to the end.
According to the second modification, it is possible to improve the change accuracy of the position change of the first region according to each driver.

  In the above-described embodiment, the first area is temporarily enlarged to set the second area. However, the present invention is not limited to this, and the second area is simply used during the execution of the correction process. When the correction process is not executed, the first area is used to switch between the first area and the second area depending on whether the correction process is executed or not when determining whether or not the line-of-sight direction intersects each area. May be. In this case, the second area may be an area set by enlarging the first area.

10 Gaze determination device 11 Crew camera (imaging means)
13 Acceleration sensor (acceleration acquisition means)
21 Gaze detection unit (gaze detection means)
22 Gaze determination unit (gaze determination means)
23 1st area | region memory | storage part (memory | storage means)
24 Area expansion part (area expansion means)
25 Coordinate position storage unit (storage means)
26 Stored Number Judgment Unit (Stored Number Judgment Unit)
27 Center position calculation unit (center position calculation means)
28 1st area position change part (area position change means)
Step S31: acceleration determination means

Claims (3)

Imaging means for imaging the driver's eyes seated in the driver's seat and outputting an image; and gaze detection means for detecting the driver's gaze direction based on the image output from the imaging means and outputting a detection result Storage means for storing an existence area for each of at least one on-vehicle device as a first area, and the line-of-sight direction of the detection result output from the line-of-sight detection means is stored in the storage means. A gaze determination device comprising gaze determination means for determining that the driver is gazing at the in-vehicle device corresponding to the first area when intersecting with one area,
A region enlarging means for temporarily enlarging the first region for each in-vehicle device in the vicinity of the in-vehicle device and outputting an expansion result as a second region for each in-vehicle device;
When the line-of-sight direction of the detection result output from the line-of-sight detection unit intersects the second area output from the area enlarging unit, the coordinate position corresponding to the line-of-sight direction is stored for each on-vehicle device. Storage means for
A storage number determination unit that determines whether or not the number of stored coordinate positions for each in-vehicle device stored in the storage unit is equal to or greater than a predetermined number, and outputs a determination result;
A central position calculating means for calculating a central position of the coordinate position for each in-vehicle device and outputting a calculation result when the stored number is equal to or larger than a predetermined number in the determination result output from the stored number determining means; ,
The center coordinate position of the first area for each on-vehicle device stored in the storage means matches the center position for each on-vehicle device of the calculation result output from the central position calculation means, An area position changing means for changing the position of the first area and outputting the change result;
When the gaze direction of the detection result output from the line-of-sight detection unit intersects the first region of the change result output from the region position changing unit, the gaze determination unit A gaze determination device that determines that the vehicle-mounted device corresponding to the first region is being watched. Imaging means for imaging the driver's eyes seated in the driver's seat and outputting an image; and gaze detection means for detecting the driver's gaze direction based on the image output from the imaging means and outputting a detection result Storage means for storing an existence area for each of at least one on-vehicle device as a first area, and the line-of-sight direction of the detection result output from the line-of-sight detection means is stored in the storage means. A gaze determination device comprising gaze determination means for determining that the driver is gazing at the in-vehicle device corresponding to the first area when intersecting with one area,
A region enlarging means for temporarily enlarging the first region for each in-vehicle device in the vicinity of the in-vehicle device and outputting an expansion result as a second region for each in-vehicle device;
When the line-of-sight direction of the detection result output from the line-of-sight detection unit intersects the second area output from the area enlarging unit, the coordinate position corresponding to the line-of-sight direction is stored for each on-vehicle device. Storage means for
A storage number determination unit that determines whether or not the number of stored coordinate positions for each in-vehicle device stored in the storage unit is equal to or greater than a predetermined number, and outputs a determination result;
A central position calculating means for calculating a central position of the coordinate position for each in-vehicle device and outputting a calculation result when the stored number is equal to or larger than a predetermined number in the determination result output from the stored number determining means; ,
The center coordinate position of the first area for each on-vehicle device stored in the storage means matches the center position for each on-vehicle device of the calculation result output from the central position calculation means, An area position changing means for changing the position of the first area and outputting the change result;
When the gaze direction of the detection result output from the line-of-sight detection unit intersects the first region of the change result output from the region position changing unit, the gaze determination unit It is determined that the in-vehicle device corresponding to the first area is being watched,
The area enlarging means temporarily enlarges the first area for each in-vehicle device by enlarging the peripheral portion of the first area by a predetermined degree in a shape corresponding to the peripheral portion of the in-vehicle device. Note vision determination device you wherein a. Acceleration acquisition means for acquiring acceleration of the vehicle in at least one direction and outputting an acquisition result;
Acceleration determination means for determining whether the acceleration of the acquisition result output from the acceleration acquisition means is equal to or less than a predetermined value and outputting a determination result;
The storage means includes the line-of-sight detection means when the acceleration is equal to or less than the predetermined value in the determination result output from the acceleration determination means among the line-of-sight directions of the detection result output from the line-of-sight detection means. The coordinate position corresponding to the line-of-sight direction is stored for each on-vehicle device when the line-of-sight direction detected by the crossing with the second area output from the area enlarging means is stored. The gaze determination apparatus according to claim 1 or 2 .

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