JP2017083308A - Electronic apparatus, facility specification method, and facility specification program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electronic apparatus that can further accurately specify a facility present in the direction of the line of sight of people in a vehicle.SOLUTION: An on-vehicle device 10 comprises: imaging means that photographs people in a vehicle; detection means that detects the direction of the line of sight of the people in the vehicle at a constant sampling cycle on the basis of the photographed image; calculation means that calculates the speed of movement of the line of sight; determination means that determines a specific object outside the vehicle that is in the direction of the line of sight and gazed by the people in the vehicle longer than a threshold; and display means that displays information on the specific object determined by the determination means. The determination means makes the threshold variable according to the speed of movement of the line of sight.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an electronic apparatus having a function of specifying a facility that exists in the direction of the line of sight of a passenger and displaying information related to the specified facility.

  Conventionally, a navigation device can search for and display corresponding facility information based on information such as a name, a telephone number, and a genre input by a user using map data. However, the information that the user wants to know is not limited to the information about the contents and destinations entered by the user, but there is also a need to know the information about the facilities that were noticed while driving.

  Patent Document 1 discloses a facility specifying apparatus that detects a plurality of sight line directions of occupants at different timings, and guides a facility that exists in the vicinity of the gazing point using intersections of the detected plurality of sight line directions as gazing points. ing. Further, in Patent Document 2, when an image is taken by a camera, the direction in which the camera is directed is detected, and a facility that is within the range centered on the current position from the direction is searched from a database. A facility information display device for displaying a facility is disclosed.

JP 2009-31943 A JP 2012-209833 A

  Conventional in-vehicle devices have the following problems. When a passenger watches a facility such as a building through a window in the vehicle while traveling, it is unclear whether the facility is in one of the depth directions based on the passenger. Moreover, when the facility in the direction to be watched is specified by the technique of Patent Document 1, when the facility and the passenger are close to each other, the facility passes through the facility while detecting the passenger's gaze direction at different timings. Therefore, there is a problem that the facility cannot be detected. In particular, this problem can occur remarkably when the traveling speed of the vehicle is high.

  An object of the present invention is to solve such a conventional problem and to provide an electronic device, a facility specifying method, and a facility specifying program that can more accurately specify a facility that exists in the line-of-sight direction of a passenger. .

  An electronic apparatus according to the present invention includes an imaging unit that images a passenger in a vehicle, a detection unit that detects a gaze direction of the passenger at a constant sampling period based on a captured image captured by the imaging unit, and the imaging unit A calculating unit that calculates a passenger's line-of-sight movement speed based on a captured image captured by the vehicle, a determination unit that determines a specific object outside the vehicle in which the passenger's line-of-sight direction is gazing longer than a threshold, and the determination unit Display means for displaying information relating to the determined specific object, and the determination means varies the threshold according to the line-of-sight movement speed.

  Preferably, the determination unit sets a first threshold value when the line-of-sight movement speed is high, sets a second threshold value when the line-of-sight movement speed is low, and the first threshold value is smaller than the second threshold value. . Preferably, the electronic device further includes vehicle information detecting means for detecting vehicle information including at least the traveling speed of the own vehicle, and the detecting means varies the sampling period in accordance with the traveling speed. Preferably, the detection means sets a first sampling period when the traveling speed is high, sets a second sampling period when the traveling speed is low, and the first sampling period is greater than the second sampling period. Is also fast. Preferably, the determination means includes target area specifying means for specifying a target area for determining a specific object based on the line-of-sight direction, and the target area specifying means has a certain angle centered on the line-of-sight direction, and The target area is defined by a distance starting from the own vehicle, and the target area specifying means sets the distance according to the line-of-sight movement speed. Preferably, the target area specifying unit sets a first distance when the line-of-sight movement speed is high, sets a second distance when the line-of-sight movement speed is low, and the first distance is greater than the second distance. Is also small.

  The facility specifying method according to the present invention is in an electronic apparatus including an imaging unit that images passengers in a vehicle and a display unit that can display information related to facilities outside the vehicle, and the imaging is performed by the imaging unit. A step of detecting the sight line direction of the occupant at a constant sampling period based on the image; a step of calculating a sight line movement speed based on the captured image captured by the imaging unit; and a threshold value according to the sight line movement speed. A setting step, a step of determining a specific object outside the vehicle in which the line-of-sight direction of the passenger is gazing longer than the threshold value, and a step of displaying information on the determined specific object.

  The facility specifying program according to the present invention is executed by an electronic device including an imaging unit that images passengers in a vehicle and a display unit that can display information on facilities outside the vehicle, and is imaged by the imaging unit. Detecting the direction of the sight line of the passenger at a constant sampling period based on the captured image, calculating the line-of-sight movement speed based on the captured image captured by the imaging unit, and depending on the line-of-sight movement speed A step of setting a threshold value; a step of determining a specific object outside the vehicle in which the gaze direction of the passenger is gazing longer than the threshold value; and a step of displaying information on the determined specific object.

  According to the present invention, the threshold for determining a specific object is made variable according to the line-of-sight movement speed, so that even when the line-of-sight movement speed is fast, the specific object can be accurately determined. It is possible to display information on a specific object.

It is a block diagram which shows the structure of the vehicle-mounted apparatus which concerns on the Example of this invention. It is a top view which shows the example of installation of the imaging camera which concerns on the Example of this invention. It is a figure which shows the specific example of the display part which concerns on the Example of this invention. It is a figure which shows an example of the utilization aspect of the communication part which concerns on the Example of this invention. It is a figure which shows an example of facility data. It is a figure showing an example of functional composition of a facility specific program concerning the 1st example of the present invention. It is a schematic diagram explaining operation | movement of the gaze determination part which concerns on 1st Example of this invention. It is a schematic diagram explaining specification of the object area | region which concerns on 1st Example of this invention. It is a flowchart explaining the plant | facility specific operation | movement which concerns on 1st Example of this invention. FIG. 10A is a diagram for explaining a conventional facility specifying method, and FIG. 10B is a diagram for explaining a facility specifying method according to the first embodiment of the present invention. It is an example of the table which prescribed | regulated the relationship between the running speed and sampling period which are used with the gaze direction detection part which concerns on 2nd Example of this invention. It is a figure explaining the correction | amendment method of the gaze direction in the target area | region specific | specification part which concerns on 3rd Example of this invention.

  Next, a preferred embodiment of the present invention will be described. In a preferred aspect, the electronic device according to the present invention is implemented by an in-vehicle device mounted on a vehicle. The in-vehicle device includes an imaging camera that captures the passengers in the vehicle, calculates the passenger's line-of-sight direction and line-of-sight movement speed from the captured image, identifies facilities that exist in the line-of-sight direction using them, and is specified It has a function to display information about facilities. The display function can be a center display installed in front of the vehicle, a display in an instrument panel including instruments, a rear display for a rear seat, or a HUD (head-up display). In addition, the “facility” of the present invention is not only a facility such as a building, but also a broad meaning including a characteristic natural landscape, place, and area that does not have structures such as forests, hills, land, mountains, and lakes. Used in a meaning. Furthermore, the in-vehicle device can include, for example, a navigation function, a radio / TV reception function, a multimedia playback function, and the like in addition to the function of displaying information about facilities.

  FIG. 1 is a block diagram showing a typical configuration of an in-vehicle device according to an embodiment of the present invention. The in-vehicle device 10 according to the present embodiment includes an imaging unit 100, an input unit 110, a vehicle information detection unit 120, a navigation unit 130, a display unit 140, an audio output unit 150, a communication unit 160, a storage unit 170, and a control unit 180. Consists of.

  The imaging unit 100 includes one or more imaging cameras provided in the vehicle, and images passengers. FIG. 2 shows a preferred mounting example of the imaging camera. The imaging camera 102 is a wide-angle lens camera that is mounted in the vicinity of the position of the rear-view mirror of the host vehicle M, and images passengers in the driver's seat and the passenger seat equally. The in-vehicle camera 104 is attached in the vicinity of the rear of the passenger seat, and can image the left rear seat and the central rear seat. The imaging camera 106 is attached in the vicinity of the rear of the driver's seat, and can image the right rear seat and the central rear seat. Image data captured by the imaging cameras 102, 104, and 106 is provided to the control unit 180, and image analysis is performed to detect the presence / absence of the passenger, the passenger's face and line of sight. In addition, the number of imaging cameras and attachment positions are not limited to the example illustrated in FIG. 2, and the passenger may be imaged by a larger or smaller number of imaging cameras.

  The input unit 110 includes an input key device, a voice input recognition device, a touch panel, or the like, receives an instruction from the user, and provides this to the control unit 180. The vehicle information detection unit 120 detects the traveling speed of the host vehicle, the three-dimensional position information of the host vehicle, and the like. The three-dimensional position information of the own vehicle includes the own vehicle position, the direction of the own vehicle, the inclination, and the like. The own vehicle position can be obtained from, for example, a GPS receiver or an independent direction sensor, and the direction and inclination of the own vehicle are detected by a gyro sensor, an acceleration sensor, or a steering sensor (steering angle) mounted on the own vehicle. Can be obtained from

  The navigation unit 130 displays a road map around the vehicle position on the display unit 140, searches for a route to the destination, and guides the search route. The display unit 140 displays a road map of the navigation unit 130, or displays information about facilities outside the vehicle that the passenger has watched as will be described later. The display unit 140 includes a liquid crystal display, an organic EL display, a projector, or the like. FIG. 3 shows an example of attachment of the display unit 140 of this embodiment. As shown in FIG. 3A, the display unit 140 may be a display 140A attached to a center console between an instrument panel in front of the driver's seat and a dash box in front of the passenger seat. ), Rear left and right rear displays 144A, 144B attached to the ceiling 142 around the center of the driver and passenger seats can be included for passengers in the rear seats.

  The voice output unit 150 outputs a voice such as a guide route generated by the navigation unit 130. The communication unit 160 enables wired or wireless data communication with an external network or an external device. For example, as shown in FIG. 4, the communication unit 160 accesses the position information distribution site 162 via the network NW, acquires the vehicle position information from there, accesses the map data distribution site 164, and from there Necessary map data can be acquired, or the facility information distribution site 166 can be accessed and detailed information about the facility can be acquired therefrom.

  The storage unit 170 can store programs and software executed by the control unit 180, road map data (such as node data and link data) required by the navigation unit 130, and facility data. FIG. 5 is a diagram illustrating an example of facility data. The facility data includes a facility code for identifying the facility, a facility name, a genre, a position coordinate, a telephone number, a facility opening time, a closing time, an appearance image of the facility, facility introduction information such as a facility review, and the like.

  In a preferred embodiment, the control unit 180 includes a microcontroller including a ROM, a RAM, and the like, and the ROM or the RAM can store various programs for controlling the operation of each unit of the in-vehicle device 10. In the present embodiment, the control unit 180 executes a facility specifying program that specifies the facility that the passenger is watching and displays information related to the specified facility.

  FIG. 6 is a diagram illustrating a functional configuration example of the facility identification program according to the present embodiment. The facility identification program 200 includes a passenger monitoring unit 210, a gaze direction detection unit 220, a gaze movement speed calculation unit 230, a threshold setting unit 240, a gaze determination unit 250, a target area identification unit 260, a facility identification unit 270, and a facility information display unit. 280.

  The passenger monitoring unit 210 monitors the presence or absence of a passenger based on the image analysis result of the captured image from the imaging unit 100. For example, the presence / absence of a driver and a passenger on the passenger seat is monitored based on the image captured by the imaging camera 102, and the presence / absence of a passenger in the rear seat is monitored by the imaging cameras 104 and 106. In a preferred embodiment, when it is determined that there is no passenger, the control unit 180 can turn off the power of the imaging camera. The monitoring result of the passenger monitoring unit 210 is provided to the line-of-sight direction detection unit 220 and the like.

  The line-of-sight direction detection unit 220 detects the line-of-sight direction of the passenger by analyzing the captured image of the passenger. In the image analysis, for example, processing such as edge detection and edge enhancement is performed using spatial filtering to detect a passenger's face and eyes. The imaging cameras 102, 104, and 106 are attached at predetermined positions, and can detect the face direction and the line-of-sight direction by knowing the coordinate positions of the face and eyes on the image. In one example, the direction of the occupant's face can be regarded as the line-of-sight direction, but in a more preferred example, the line-of-sight direction is detected from the eye position. The detection of the line-of-sight direction is performed at a constant sampling cycle, and the detected line-of-sight direction is sequentially provided to the movement speed calculation unit 230 and the gaze determination unit 250.

  The line-of-sight movement speed calculation unit 230 calculates the movement speed of the passenger's line of sight. In one example, the line-of-sight movement speed calculation unit 230 calculates the line-of-sight movement speed or the amount of change thereof from the line-of-sight direction difference detected by the line-of-sight direction detection unit 220 at a constant sampling period. The line-of-sight movement speed may be calculated from, for example, the difference between two consecutive line-of-sight directions, or may be calculated from the average of each difference between three or more line-of-sight directions. In another example, the line-of-sight movement speed calculation unit 230 does not necessarily calculate the line-of-sight movement speed based on the line-of-sight direction from the line-of-sight direction detection unit 220, but is based on the captured image from the passenger monitoring unit 210. May be detected, and the line-of-sight movement speed may be calculated from the change in the position of the eye.

  The threshold value changing unit 240 sets a threshold value used by the gaze determination unit 250 described later based on the line-of-sight movement speed calculated by the line-of-sight movement speed calculation unit 230. This threshold value is a criterion for determining whether or not the passenger is gazing at a certain direction. The threshold value setting unit 240 sets the threshold value to a smaller value as the line-of-sight movement speed increases, and conversely sets the threshold value to a larger value as the line-of-sight movement speed decreases.

  The gaze determination unit 250 determines whether or not the occupant is gazing at a certain direction based on the gaze direction detected by the gaze direction detection unit 22. Specifically, it is determined that the occupant is gazing when the sight line direction of the occupant is within a certain range for a period longer than the threshold. As described above, the threshold is set according to the line-of-sight movement speed. When the line-of-sight movement speed is high, it is expected that the passenger is gazing at a facility in a relatively close place or the traveling speed of the own vehicle is high. On the other hand, when the line-of-sight movement speed is low, it is expected that the occupant is watching the facility at a relatively distant place or the traveling speed of the own vehicle is low. In other words, even if the speed of the host vehicle is slow, if you are watching a facility at a relatively close distance, the eye movement speed tends to increase. When looking at these facilities, the line-of-sight movement speed tends to decrease. By reducing the threshold when the line-of-sight movement speed is high, it is easy to determine gaze, and the problem of passing through the facility before specifying the facility is solved.

  The gaze determination unit 250 corrects the gaze direction based on the three-dimensional position information of the host vehicle detected by the vehicle information detection unit 120. When the passenger is gazing at the facility, the direction of the line of sight does not change if the vehicle is stopped (travel speed is zero), but the direction of the line of sight changes relatively if the vehicle is traveling. To do. FIG. 7 illustrates line-of-sight directions D1, D2, and D3 at times t1, t2, and t3 when the passenger is watching the facility H outside the vehicle. Times t1, t2, and t3 are sampling periods of the line-of-sight direction detection unit 220. Here, in order to simplify the explanation, it is assumed that the host vehicle M is traveling straight at a substantially constant speed S. The angles θ1, θ2, and θ3 of the line-of-sight directions D1, D2, and D3 with respect to the reference direction K of the host vehicle M (for example, a line passing through the center of the host vehicle) change as the host vehicle travels. Therefore, the vehicle position at time t2 and time t3 is corrected to the vehicle position at time t1 (speed S × time). If the passenger is watching the facility H, then θ1≈θ2≈θ3. Further, when the direction of the host vehicle M changes, the host vehicle position is similarly corrected, so that it can be accurately determined whether or not the line-of-sight direction is continuously gazing at a certain direction.

  As another method, the gaze determination unit 250 sets the line-of-sight direction to a fixed direction when the relationship | θ2-θ1 | / (t2-t1) ≈ | θ3-θ2 | / (t3-t2) is satisfied. If it is estimated that there is a period longer than the threshold, it may be determined that the user is gazing at a certain direction.

  When the gaze determination unit 250 determines that the occupant is gazing at a certain direction, the target area identification unit 260 identifies a target area where the facility is to be identified based on the gaze direction in which the gaze is gazing. FIG. 8 shows a method for specifying the target area. Dc is the viewing direction with respect to the reference line K when it is determined that the user is gazing. The target area specifying unit 260 sets constant angles α1 and α2 to the left and right with reference to the line-of-sight direction Dc, and determines the angle of the target area starting from the vehicle M. α1 and α2 are predetermined values, for example, α1 = α2. Furthermore, the target area specifying unit 260 determines a distance L that is the upper limit of the target area from the own vehicle according to the line-of-sight movement speed. Preferably, the distance L is inversely proportional to the line-of-sight movement speed, and is set so that the distance L is relatively small when the line-of-sight movement speed is large and the distance L is relatively large when the line-of-sight movement speed is small. Is done. When the line-of-sight movement speed is high, it is estimated that the passenger is gazing at a facility at a relatively close distance from the own vehicle M. When the line-of-sight movement speed is low, the passenger is looking at a facility at a relatively long distance from the own vehicle M. This is because it is estimated that the user is gazing.

  The target area information specified by the target area specifying unit 260 is provided to the facility specifying unit 270. The facility specifying unit 270 refers to the map data and the location information of the facility data (FIG. 5), searches for the facility existing in the target area, and specifies the facility. Preferably, the facilities are specified in order from the nearest vehicle position. FIG. 8 shows an example in which the facilities H1, H2, and H3 in the target area are specified.

  The facility information display unit 280 causes the display unit 140 to display information regarding the facility specified by the facility specifying unit 270. Although the display mode is not particularly limited, the facility name or the like can be displayed on the map in a balloon notation, or the facility name or the like can be displayed in a list in the order from the vehicle position. Further, the information to be displayed may include a genre, introduction information, an appearance image of a facility, etc. as shown in FIG. More preferably, the facility information display unit 280 displays information about the facility on the display unit close to the seat where the target passenger exists based on the monitoring result of the passenger monitoring unit 210 and / or the detection result of the line-of-sight direction detection unit 220. Display. For example, if there is a passenger on the left side of the rear seat, the facility information is displayed on the rear display 144A, and if there is a passenger on the right side of the rear seat, the facility information is displayed on the rear display 144B. In addition, the facility information display unit 280 may store information related to the facility in the storage unit 170 so that the facility information is displayed on the display unit 140 when an instruction is given from the user.

  FIG. 9 is a flowchart showing the facility specifying operation according to the present embodiment. First, the presence / absence of a passenger is monitored by the passenger monitoring unit 210 based on the captured image from the imaging unit 100 (S100). Next, the line-of-sight detection unit 220 detects the passenger's line-of-sight direction at a fixed sampling period (S102), and the line-of-sight movement speed calculation unit 230 uses the detected line-of-sight direction to move the passenger's line of sight. The speed is calculated (S104). The threshold value setting unit 240 sets a threshold value corresponding to the line-of-sight movement speed in the gaze determination unit 250 (S106), and the gaze determination unit 250 uses the set threshold value to determine the gaze time of the passenger in a certain direction. It is determined whether or not the threshold value is exceeded (S108). When it is determined that the gaze exceeds the threshold value, the target area specifying unit 260 specifies the target area based on the gaze direction Dc and the gaze movement speed of the gaze (S110), and the facility specifying unit 270 A facility existing in the area is specified (S112), and the facility information display unit 280 causes the display unit 140 to display information on the specified facility.

  FIG. 10 is a diagram for explaining the effect of this embodiment. FIG. 10A shows a conventional facility specifying method, and FIG. 10B shows a facility specifying method of this embodiment. When the passenger gazes at the facility H at a relatively close position, the line of sight moves faster than when the passenger gazes at the facility at a far position. In addition, when a facility in a relatively close position is watched, the time until the facility passes is shortened. In the conventional example shown in FIG. 10A, even if the gaze of the facility H is started at the point P1 (time t1) and the gaze determination is performed at the point P3 (time t3), the own vehicle M passes the facility H. The facility H cannot be specified. On the other hand, in this embodiment, since the threshold value of the gaze determination unit 250 is set to be small when the line-of-sight movement speed is high, gaze determination can be performed at the point P2 (time t2 (t1 <t2 <t3)). The facility H can be specified before passing the facility H.

  Next, a second embodiment of the present invention will be described. In the first embodiment, the gaze direction detection unit 220 has shown an example in which the gaze direction of the occupant is detected at a constant sampling cycle. However, in the second embodiment, the sampling cycle is determined according to the traveling speed of the host vehicle. To change. Specifically, the gaze direction detection unit 220 relatively increases the sampling cycle when the traveling speed of the host vehicle acquired from the vehicle information detection unit 120 is high, and relatively sets the sampling cycle when the traveling speed is low. Slow down. When the traveling speed of the host vehicle is high, it is necessary to shorten the detection period of the line-of-sight direction and shorten the time required for identifying the facility.

  The relationship between the traveling speed of the host vehicle and the sampling period is defined in a table as shown in FIG. 11, for example, and the table is stored in the storage unit 170. The line-of-sight direction detection unit 220 can set a sampling cycle according to the traveling speed with reference to the table.

  As described above, according to the second embodiment, since the sampling cycle for detecting the direction of the line of sight is changed according to the traveling speed of the own vehicle, it is easy to specify the facility before passing through the facility. become.

  Next, a third embodiment of the present invention will be described. In the first embodiment, the target area specifying unit 260 specifies the target area with a constant angle (α1, α2) and distance L around the line-of-sight direction Dc as shown in FIG. 8, but the start point of the line-of-sight direction Dx Is the position of the own vehicle, that is, the position of the GPS receiver mounted on the own vehicle M, and the position of the GPS receiver does not coincide with the position of the occupant determined to watch. For this reason, in the third embodiment, the position of the line-of-sight direction Dc is corrected to specify a more accurate target region.

  FIG. 12 is a diagram for explaining a method of correcting the line-of-sight direction Dc according to the third embodiment. In the figure, Qa is the position of the GPS receiver, and Qb is the position of the passenger W on the left side of the rear seat. When the occupant W is detected by the occupant monitoring unit 210 and the gaze determination unit 250 determines that the occupant W is gazing at a certain direction, the target area specifying unit 260 determines the position Qa of the GPS receiver. A difference in the X direction and the Y direction with respect to the position Qb of the passenger W is obtained. The X direction is parallel to the reference line K of the host vehicle M, and the Y direction is orthogonal thereto. Next, the target area specifying unit 260 shifts the line-of-sight direction Dc determined to be watched by the difference between the X direction and the Y direction, and corrects the starting point of the line-of-sight direction DC to the position Qb of the passenger W. In addition, the position Qa of the GPS receiver and the distances in the X direction and the Y direction to other seats can be stored in the storage unit 170 in advance.

  As described above, according to the third embodiment, by correcting the line-of-sight direction Dc to the position of the occupant, the target area can be specified more accurately, and as a result, the facility in the sight-line direction of the passenger can be identified. Identification can be performed more accurately.

  The preferred embodiment of the present invention has been described in detail above. However, the present invention is not limited to the specific embodiment, and various modifications and variations are possible within the scope of the gist of the invention described in the claims. It can be changed.

10: In-vehicle device 100: Imaging unit 102, 104, 106: Imaging camera 110: Input unit 120: Vehicle information detection unit 130: Navigation unit 140: Display unit 150: Audio output unit 160: Communication unit 162: Location information distribution site 164 : Map data distribution site 166: Facility information distribution site 170: Storage unit 180: Control unit 200: Facility identification program 210: Passenger monitoring unit 220: Gaze direction detection unit 230: Gaze movement speed calculation unit 240: Threshold setting unit 250: Gaze determination unit 260: target area specifying unit 270: facility specifying unit 280: facility information display unit

Claims (8)

Imaging means for imaging passengers in the vehicle;
Detecting means for detecting the sight line direction of the passenger at a constant sampling period based on the captured image captured by the imaging means;
Calculating means for calculating a passenger's line-of-sight movement speed based on a captured image captured by the imaging means;
A discriminating means for discriminating a specific object outside the vehicle in which the gaze direction of the passenger is gazing longer than the threshold;
Display means for displaying information on the specific object determined by the determination means,
The determination unit is an electronic device that varies the threshold according to the line-of-sight movement speed. The determination means sets a first threshold when the line-of-sight movement speed is high, sets a second threshold when the line-of-sight movement speed is small, and the first threshold is smaller than the second threshold. Item 2. The electronic device according to Item 1. The electronic device further includes vehicle information detection means for detecting vehicle information including at least the traveling speed of the own vehicle,
The electronic device according to claim 1, wherein the detection unit varies the sampling period according to the traveling speed. The detection means sets a first sampling period when the traveling speed is high, sets a second sampling period when the traveling speed is low, and the first sampling period is faster than the second sampling period. The electronic device according to claim 3. The discriminating means includes target area specifying means for specifying a target area for discriminating a specific object based on the line-of-sight direction, and the target area specifying means includes a fixed angle centered on the line-of-sight direction, and the vehicle. 5. The electronic device according to claim 1, wherein the target region is defined by a distance starting from, and the target region specifying unit sets the distance according to the line-of-sight movement speed. The target area specifying means sets a first distance when the line-of-sight movement speed is high, sets a second distance when the line-of-sight movement speed is low, and the first distance is smaller than the second distance. The electronic device according to claim 6. A facility identification method in an electronic device, comprising: an imaging means for imaging passengers in a vehicle; and a display means capable of displaying information about facilities outside the vehicle,
Detecting the sight line direction of the occupant at a constant sampling period based on the captured image captured by the imaging means;
Calculating a line-of-sight movement speed based on a captured image captured by the imaging unit;
Setting a threshold according to the eye movement speed;
Determining a specific object outside the vehicle in which the gaze direction of the passenger is gazing longer than the threshold;
A facility identifying method comprising: displaying information on the identified specific object. A facility identification program executed by an electronic device including an imaging unit that images passengers in a vehicle and a display unit that can display information about facilities outside the vehicle,
Detecting the sight line direction of the occupant at a constant sampling period based on the captured image captured by the imaging means;
Calculating a line-of-sight movement speed based on a captured image captured by the imaging unit;
Setting a threshold according to the eye movement speed;
Determining a specific object outside the vehicle in which the gaze direction of the passenger is gazing longer than the threshold;
A facility specifying program comprising: displaying information regarding the determined specific object.

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