JP7640421B2 - Traffic monitoring device - Google Patents

Description

The present invention relates to a traffic monitoring device that monitors pedestrians.

Conventionally, many gate devices such as automated ticket gates include a passage sensor consisting of multiple photoelectric sensors arranged along the passageway direction, and this passage sensor detects people (hereinafter referred to as "passersby") who are about to pass through the passageway (see Patent Document 1, etc.). This type of device is often configured to close the gate to prevent passage through the passageway when it is determined that so-called "tailgating" has occurred based on the detection results of the passage sensor.

JP 2001-216540 A

However, when a passerby is carrying luggage such as a suitcase, the passage sensor may erroneously detect the luggage as a person, i.e., as a different passerby from the passerby. Such erroneous detection may lead to the gate device misjudging a "tailgating" and the unnecessary closure of the gate that accompanies the erroneous detection, thereby hindering smooth passage through the passage. For this reason, there is a demand for technology that can avoid such erroneous detection and also meet the real-time requirements.

However, this demand is not limited to gate devices, but is common to any device that requires monitoring of pedestrians.

The present invention aims to provide a traffic monitoring device that can reduce the time required for processing while preventing baggage carried by a passerby from being mistakenly detected as a person (i.e., another passerby).

According to one aspect of the present invention, a traffic monitoring device includes a detection unit that detects objects passing through a monitoring area, a determination unit that sets the highest point of point cloud data acquired by a point cloud data acquisition unit above the monitoring area as the top of a pedestrian's head, sets a search range for luggage based on the position of the top of the head, and determines whether the pedestrian is carrying luggage based on the number of point clouds at each height position in the search range, and a monitoring unit that monitors pedestrians passing through the monitoring area based on the detection results of the detection unit and the determination results of the determination unit.

The present invention provides a traffic monitoring device that can reduce the time required for processing while preventing baggage carried by a passerby from being mistakenly detected as a person (i.e., another passerby).

1 is a diagram showing an external configuration of a gate device according to an embodiment; FIG. 2 is a block diagram showing a control system configuration of the gate apparatus according to the embodiment. 13 is a flowchart illustrating an example of a determination process performed by a determination unit. FIG. 13 is a diagram for explaining a determination process performed by a determination unit; 11 is a diagram for explaining a determination process performed by a determination unit; FIG. 13 is a flowchart illustrating an example of a monitoring process performed by a monitoring unit. 13 is a flowchart illustrating an example of a monitoring process performed by a monitoring unit. 6 is a flowchart showing an example of control by a control unit.

The following describes an embodiment of the present invention with reference to the attached drawings.

Figure 1 is a diagram showing the external configuration of a gate device 1 according to one embodiment of the present invention, and Figure 2 is a block diagram showing the control system configuration of the gate device 1. The gate device 1 according to the embodiment includes a traffic monitoring device 2 that monitors pedestrians in a monitored area, i.e., passage T, and is configured to open the gate based on passage ticket information and close the gate based on the number of people that can pass through passage T and the monitoring results of the traffic monitoring device 2, as described below.

Referring to Figures 1 and 2, the gate device 1 according to the embodiment includes a device main body 3, a control unit 4, a detection unit 5, a point cloud data acquisition unit 6, a determination unit 7, and a monitoring unit 8. In this embodiment, the traffic monitoring device 2 is mainly composed of the detection unit 5, the point cloud data acquisition unit 6, the determination unit 7, and the monitoring unit 8.

The device main body 3 is installed adjacent to the aisle T on the side thereof. The device main body 3 has an information reading unit 31, a gate 32, and an alarm unit 33.

The information reading unit 31 is provided on the near side as seen by a pedestrian moving toward the passage T, that is, on the entrance side of the passage T in the device main body 3. The information reading unit 31 is configured to read the passage ticket information recorded on a passage ticket medium held by the pedestrian, for example, and output the read passage ticket information to the control unit 4. The passage ticket information is information necessary for passing through the passage T. In this embodiment, the passage ticket information includes the number of people who can pass through the passage T. The passage ticket medium is a variety of media capable of recording the passage ticket information, and includes an admission ticket medium, a passenger ticket medium, and a boarding pass medium. The information reading unit 31 may be configured as an information reading/writing unit that can write information to the passage ticket medium in addition to reading the passage ticket information from the passage ticket medium.

The gate 32 is provided at the rear side as seen by a person moving toward the passage T, that is, at the exit side of the passage T in the device main body 3. The gate 32 opens and closes by rotating, and is configured to allow a person to pass through the passage T in the direction of the arrow when open and to prevent a person from passing through the passage T in the direction of the arrow when closed.

The alarm unit 33 is provided at any location on the device main body 3. The alarm unit 33 is provided mainly to notify passersby, security personnel, etc. when a passerby is prevented from passing through the passage T. Although not particularly limited, the alarm unit 33 may include a light-emitting unit that emits an alarm light, a sound-producing unit that generates an alarm sound, and/or a display unit that displays an alarm.

The control unit 4 mainly controls the opening and closing of the gate 32 and the operation of the alarm unit 33. The control by the control unit 4 will be described later.

The detection unit 5 detects an object passing through the passage T. More specifically, the detection unit 5 is configured to be capable of detecting the entry of an object into the passage T, the position of an object within the passage T, and the exit of an object from the passage T. In this embodiment, the detection unit 5 has an upper light receiving unit 5a and a lower light receiving unit 5b installed in two tiers, one above the other, on the surface of the device main body 3 facing the passage T, and an upper light emitting unit and a lower light emitting unit (both not shown) that face the upper light receiving unit and the lower light emitting unit across the passage T.

The upper light receiving unit 5a includes a plurality of light receiving elements arranged along the passage T, and the upper light emitting unit includes a plurality of light emitting elements arranged opposite the plurality of light receiving elements of the upper light receiving unit 5a across the passage T. The lower light receiving unit 5b includes a plurality of light receiving elements arranged along the passage T, and the lower light emitting unit includes a plurality of light emitting elements arranged opposite the plurality of light receiving elements of the lower light receiving unit 5b across the passage T.

The detection unit 5 is configured to detect the presence and position of an object in the passage T when the light receiving element of the upper light receiving unit 5a does not receive light from the corresponding light emitting element of the upper light emitting unit, and/or when the light receiving element of the lower light receiving unit 5b does not receive light from the corresponding light emitting element of the lower light emitting unit, i.e., when the light from the upper light emitting unit and/or the lower light emitting unit is blocked by an object.

The gate device 1 may include another device body that faces the device body 3 across the passage T and forms a pair. In this case, the other device body has a gate that forms a pair with the gate 32. The upper light-emitting unit and the lower light-emitting unit are installed in two tiers, one above the other, on the surface of the other device body facing the passage T.

The point cloud data acquisition unit 6 is configured, for example, with a ToF sensor (distance measurement sensor) and is disposed above the passage T. The point cloud data acquisition unit 6 is configured to perform three-dimensional distance measurement of a predetermined range including the vicinity of the entrance of the passage T by irradiating a distance measurement light such as a laser light to the predetermined range including the vicinity of the entrance of the passage T, and to acquire three-dimensional measurement data of a large number of distance measurement points in the predetermined range, i.e., point cloud data. Although not particularly limited, the point cloud data acquisition unit 6 may be configured, for example, to acquire point cloud data for the predetermined range when the detection unit 5 detects the entry of an object into the passage T.

The determination unit 7 is configured to determine whether or not a pedestrian passing through the passage T is carrying baggage, based on the point cloud data acquired by the point cloud data acquisition unit 6, as necessary. In other words, the determination unit 7 determines whether or not baggage is present. The determination process performed by the determination unit 7 will be described later.

The monitoring unit 8 monitors pedestrians (people) passing through the passage T based on the detection results of the detection unit 5 and the judgment results of the judgment unit 7. The monitoring process by the monitoring unit 8 will be described later.

[Determination process by determination unit 7]
Next, the determination process by the determination unit 7 will be described with reference to Fig. 3. Fig. 3 is a flow chart showing an example of the determination process by the determination unit 7.

In FIG. 3, in step S11, it is determined whether or not an object has entered passage T. This determination is made based on the detection result of the detection unit 5. Then, if an object has entered passage T, the process proceeds to step S12.

In step S12, it is determined whether multiple objects (mainly two in this case) have entered passage T in succession. If multiple objects have not entered passage T in succession (i.e., one object has entered passage T), the process returns to step S11, whereas if multiple objects have entered passage T in succession, the process proceeds to step S13. This is because if only one object has entered passage T, it is not necessary to determine whether the passerby is carrying baggage.

In step S13, the point cloud data acquired by the point cloud data acquisition unit 6 is input.

In step S14, the object range OR is defined based on the point cloud data input in step S13.

In step S15, the highest point (the highest distance measurement point) of the point cloud data input in step S13 is detected as the top of the pedestrian's head H.

In step S16, the luggage search range is set. In this embodiment, the luggage search range SR is set to be the range of the object range OR defined in step S14 that is a predetermined distance d or more away from the position of the top of the head H detected in step S15 in the direction of travel of the pedestrian in the passage T. The predetermined distance d is set in advance as the distance from the top of the head of the pedestrian to the body of the luggage when the pedestrian is carrying luggage such as a suitcase.

For example, as shown in FIG. 4(a), when a pedestrian pushing a bag such as a suitcase enters the passage T, that is, when the baggage is in front of the pedestrian, the determination unit 7 determines that two objects have entered the passage T consecutively based on the detection result of the detection unit 5. In this case, the determination unit 7 inputs point cloud data (top view) such as that shown in FIG. 4(b) from the point cloud data acquisition unit 6. Then, as shown in FIG. 4(c), the determination unit 7 defines a rectangular range surrounding the input point cloud data as the object range OR, and detects the highest point of the input point cloud data as the head H of the pedestrian who entered the passage T. In this example, the object range OR includes a range forward of the head H in the direction of the pedestrian's movement in the passage T (hereinafter simply referred to as "forward"), which is a predetermined distance d or more away from the position of the head H. Therefore, the determination unit 7 sets the object range OR to a range that is a predetermined distance d or more in front of the top of the head H as the luggage search range SR. In other words, the determination unit 7 sets the luggage search range SR to a position that is a predetermined distance d forward from the position of the top of the head H.

Although not shown in the figure, when a pedestrian pulling luggage such as a suitcase enters the aisle T, i.e., when the luggage is behind the pedestrian, the determination unit 7 determines that two objects have entered the aisle T consecutively based on the detection result of the detection unit 5, and inputs the point cloud data from the point cloud data acquisition unit 6. The determination unit 7 then defines the object range OR, detects the top of the head H, and sets the search range SR for the luggage. However, in this case, the determination unit 7 sets, in the opposite manner to the above, the range of the object range OR that is a predetermined distance d or more behind the top of the head H in the direction of the pedestrian's movement in the aisle T (hereinafter simply referred to as "rear") as the search range SR for the luggage. In other words, the determination unit 7 sets the search range SR at a position that is a predetermined distance d behind the position of the top of the head H.

Returning to FIG. 3, in step S17, the number of points in the point cloud data within the search range SR is counted for each height position from the passageway surface of the passageway T to a predetermined height (e.g., 1 m). Note that the "height position" here is set to a certain degree of width (e.g., several centimeters).

In step S18, it is determined whether the number of point clouds at each height position is equal to or greater than a threshold value. If the number of point clouds at each height position is equal to or greater than the threshold value, the process proceeds to step S19. If the number of point clouds at each height position is not equal to or greater than the determination threshold value, the process proceeds to step S21.

In step S19, it is determined that the pedestrian who has entered passage T is carrying baggage (baggage present). Then, in step S20, the determination result is sent to the monitoring unit 8.

In step S21, it is determined that the pedestrian who has entered passage T is not carrying any baggage (no baggage). Then, in step S22, the determination result is sent to the monitoring unit 8.

Figure 5 shows an example of the measurement points (top view) at each height position in the search range SR when a passerby who is moving while pushing luggage such as a carry case enters the passage T. Figure 5 (a) shows multiple height positions (here, eight height positions from "height position 1" to "height position 8"), and Figure 5 (b) shows the measurement points (top view) at each height position. The point cloud data acquisition unit 6 captures the surface shape of the object. For this reason, if the object is a person (e.g., a child), the number of measurement points (i.e., the number of point clouds) at each height position from the passage surface of the passage T to the specified height tends to be small, and if the object is luggage, the number of measurement points (point cloud number) at a specific height position increases. Therefore, by utilizing the difference between the measurement points obtained for such a person and the measurement points obtained for luggage, and by appropriately setting the threshold and determining whether or not there is a point cloud number at each height position that is equal to or greater than the threshold, it is possible to determine whether the point cloud in the search range SR is for luggage. In this example, the number of point clouds at "height position 3" and "height position 4" is large and exceeds the threshold value. Therefore, the determination unit 7 determines that there is baggage, that is, that the pedestrian who entered the passage T is carrying baggage.

Then, when the determination unit 7 sets the luggage search range SR to be in front of the top of the head H and determines that luggage is present, it transmits to the monitoring unit 8 a determination result indicating that luggage is present in front of the pedestrian. On the other hand, when the determination unit 7 sets the luggage search range SR to be behind the top of the head H and determines that luggage is present, it transmits to the monitoring unit 8 a determination result indicating that luggage is present behind the pedestrian. Note that, when the determination unit 7 determines that no luggage is present, it transmits to the monitoring unit 8 a determination result indicating that the pedestrian is not carrying luggage.

The flowchart shown in FIG. 3 merely shows one example of the determination process performed by the determination unit 7. The determination unit 7 may be configured to determine whether or not a passerby is carrying baggage by using the point cloud data acquired by the point cloud data acquisition unit 6, and the flowchart shown in FIG. 3 may be modified as necessary.

[Monitoring process by monitoring unit 8]
Next, the monitoring process by the monitoring unit 8 will be described with reference to Fig. 6 and Fig. 7. Fig. 6 and Fig. 7 are flow charts showing an example of the monitoring process by the monitoring unit 8.

In Figures 6 and 7, in step S31, similar to step S11 in Figure 3, it is determined whether an object has entered passage T. If an object has entered passage T, the process proceeds to step S32.

In step S32, similar to step S12 in FIG. 3, it is determined whether multiple objects have entered passage T in succession. If multiple objects have not entered passage T in succession (i.e., one object has entered passage T), the process proceeds to step S33, and if multiple objects have entered passage T in succession, the process proceeds to step S38.

In step S33, it is determined that the object that has entered passage T is a pedestrian.

In step S34, it is determined whether or not the pedestrian (the object that has entered the passage T) has passed the center position of the passage T. This determination is made based on the detection result of the detection unit 5. Then, when the pedestrian has passed the center position of the passage T, the process proceeds to step S35, and center passage information indicating that the pedestrian has reached the center position of the passage T is transmitted to the control unit 4.

In step S36, it is determined whether the pedestrian has passed through the exit of passage T. This determination is made based on the detection result of the detection unit 5. Then, when the pedestrian has passed through the exit of passage T, the process proceeds to step S37, where exit passage information indicating that the pedestrian has passed through the exit of passage T is transmitted to the control unit 4, and the current process is terminated.

In step S38, tracking of the multiple objects that have entered passage T begins.

In step S39, the judgment result is received from the judgment unit 7.

In step S40, it is determined whether the object has reached a predetermined judgment position in the passage T. This judgment is made based on the detection result of the detection unit 5. Then, when the object has reached the predetermined judgment position, the process proceeds to step S41. Note that the predetermined judgment position is set closer to the entrance than the center position of the passage T.

In step S41, the determination result received from the determination unit 7 in step S39 is used to determine whether each of the multiple objects being tracked is a passerby or baggage. In other words, a passerby/baggage determination is performed for the multiple objects.

In this embodiment, for example, when the monitoring unit 8 is tracking two objects that have entered the passage T in succession and receives a determination result from the determination unit 7 indicating that there is baggage in front of the passerby, the monitoring unit 8 determines that the object that reaches the predetermined determination position first among the two objects being tracked is baggage, and determines that the object that reaches the predetermined determination position last among the two objects being tracked is a passerby. Also, for example, when the monitoring unit 8 is tracking two objects that have entered the passage T in succession and receives a determination result from the determination unit 7 indicating that there is baggage behind the passerby, the monitoring unit 8 determines that the object that reaches the predetermined determination position first among the two objects being tracked is a passerby, and determines that the object that reaches the predetermined determination position last among the two objects being tracked is baggage. Note that when the monitoring unit 8 receives a determination result from the determination unit 7 indicating that the passerby is not carrying baggage, it determines that the tracked object is a passerby.

In step S42, it is determined whether a passerby (an object determined to be a passerby in step S41) has passed the center position of aisle T. If the passerby has passed the center position of aisle T, the process proceeds to step S43, in which the center passing information indicating that the passerby has passed the center position of aisle T is transmitted to the control unit 4. Therefore, even if an object determined to be baggage in step S41 passes the center position of aisle T, the monitoring unit 8 does not transmit the center passing information to the control unit 4.

In step S44, it is determined whether all pedestrians (all objects determined to be pedestrians in step S41) have passed the center position of the passage T. Then, when all pedestrians have passed the center position of the passage T, the process proceeds to step S45.

In step S45, it is determined whether the pedestrian has passed through the exit of passage T. Then, if the pedestrian has passed through the exit of passage T, the process proceeds to step S46, in which exit passage information indicating that the pedestrian has passed through the exit of passage T is transmitted to the control unit 4. Therefore, even if an object determined to be baggage in step S41 passes through the exit of passage T, the monitoring unit 8 does not transmit the exit passage information to the control unit 4.

In step S47, it is determined whether all pedestrians have passed through the exit of passage T. Then, when all pedestrians have passed through the exit of passage T, the current process ends.

The flowcharts shown in Figs. 6 and 7 merely show an example of the monitoring process by the monitoring unit 8. The monitoring unit 8 only needs to be configured to monitor pedestrians passing through the passage T based on the detection results of the detection unit 5 and the determination results of the determination unit 7, and more specifically, to monitor pedestrians separately from baggage, and the flowcharts shown in Figs. 6 and 7 can be modified as necessary.

[Control by control unit 4]
Next, the control by the control unit 4 will be described with reference to Fig. 8. Fig. 8 is a flow chart showing an example of the process of the control unit 4.

In FIG. 8, in step S51, it is determined whether the pass information has been input from the information reading unit 31. Then, if the pass information has been input, the process proceeds to step S52.

In step S52, it is determined whether the pass information is correct. If the pass information is correct, the process proceeds to step S53. The case where the pass information is not correct will be described later.

In step S53, the number of people allowed to pass contained in the pass information is stored.

In step S54, gate 32 is opened.

In step S55, it is determined whether the center passing information has been received from the monitoring unit 8. If the center passing information has been received from the monitoring unit 8, the process proceeds to step S56, where the number of pedestrians who passed through the center position of the passage T (center passing number of people) is counted up (incremented), and then the process proceeds to step S57. On the other hand, if the center arrival information has not been received from the monitoring unit 8, the process proceeds directly to step S57.

In step S57, it is determined whether the number of people passing through the center is equal to or less than the number of people that can pass stored in step S53. If the number of people passing through the center is equal to or less than the number of people that can pass, the process proceeds to step S58. The case where the number of people passing through the center exceeds the number of people that can pass will be described later.

In step S58, it is determined whether the exit passage information has been received from the monitoring unit 8. If the exit passage information has been received from the monitoring unit 8, the process proceeds to step S59, where the number of people who can pass stored in step S54 is counted down (decremented), and then the process proceeds to step S60. On the other hand, if the exit passage information has not been received from the monitoring unit 8, the process returns to step S55.

In step S60, it is determined whether the number of people who can pass through is 0. If the number of people who can pass through is 0, the process proceeds to step S61, where gate 32 is closed and this flow ends. On the other hand, if the number of people who can pass through is not 0, the process returns to step S55.

If the pass information is not correct in step S52, the process proceeds to step S62, where the notification unit 33 is operated for a predetermined period of time, and then the process proceeds to step S61, where the gate 32 is closed and the flow ends. This is to prevent inappropriate pedestrians from passing through passage T.

Also, in step S57, if the number of people passing through the center exceeds the number of people that can pass, the flow also proceeds to step S62, where the notification unit 33 is operated for a predetermined time, and then the flow proceeds to step S61, where the gate 32 is closed and this flow ends. If the number of people passing through the center exceeds the number of people that can pass, then a number of pedestrians exceeding the number of people that can pass have already entered the passage T, and there is a risk that a number of pedestrians exceeding the number of people that can pass will pass through the passage T. Therefore, the control unit 4 operates the notification unit 33 and closes the gate 32 to prevent a number of pedestrians exceeding the number of people that can pass from passing through the passage T.

The flowchart shown in FIG. 8 merely shows one example of control by the control unit 4. The control unit 4 only needs to be configured to control the opening and closing of the gate 32 based on the passage ticket information and the monitoring results of the passage monitoring device 2, and the flowchart shown in FIG. 8 can be modified as necessary.

As described above, the gate device 1 according to the embodiment includes a traffic monitoring device 2 that monitors pedestrians passing through the passage T, which is a monitoring area. The traffic monitoring device 2 has a detection unit 5 that detects objects passing through the passage T, a determination unit 7 that determines whether or not a pedestrian is carrying baggage based on point cloud data acquired by a point cloud data acquisition unit 6 disposed above the passage T, and a monitoring unit 8 that monitors pedestrians passing through the passage T based on the detection results of the detection unit 5 and the determination results of the determination unit 7.

For this reason, even if a passerby carrying luggage such as a suitcase enters aisle T and two objects are detected by the detection unit 5, it is possible to monitor the passerby passing through aisle T after determining that one of the two objects is the passerby and the other of the two objects is the luggage carried by the passerby. This prevents the luggage carried by a passerby passing through aisle T from being mistakenly detected as a person (another passerby).

In this embodiment, the determination unit 7 sets the highest point of the point cloud data acquired by the point cloud data acquisition unit 6 as the top of the pedestrian's head H, sets a search range SR for luggage based on the top of the head H, and determines whether the pedestrian is carrying luggage based on the number of point clouds at each height position in the search range SR. In other words, the determination unit 7 does not use all of the point cloud data acquired by the point cloud data acquisition unit 6, but narrows down the point cloud data used for the determination by setting the search range SR. Furthermore, the determination unit 7 does not perform complex processing, but simply counts the number of point clouds at each height position to determine whether the pedestrian is carrying luggage. This makes it possible to easily determine whether the pedestrian is carrying luggage in a relatively short processing time.

In particular, the determination unit 7 sets the search range SR at a position a predetermined distance d forward from the position of the top of the head H in the direction of travel of the pedestrian in the passage T, or at a position a predetermined distance d backward from the position of the top of the head H in the direction of travel of the pedestrian in the passage T. This makes it possible to more effectively narrow down the point cloud data used to determine whether the pedestrian is carrying baggage to a smaller number, thereby further shortening the processing time.

The gate device 1 further includes an information reading unit 31 that reads pass information from a pass medium carried by a pedestrian, a gate 32 that allows pedestrians to pass through the passage T when open and prevents pedestrians from passing through the passage T when closed, and a control unit 4 that controls the opening and closing of the gate 32. The control unit 4 is configured to open the gate 32 based on the pass information and close the gate 32 based on the number of people allowed to pass included in the pass information and the monitoring results of the passage monitoring device 2. This allows proper pedestrians to pass through the passage T, prevents unnecessary closure of the gate due to the baggage carried by the pedestrian being mistaken for a person (another pedestrian), and prevents a number of pedestrians exceeding the number of people allowed to pass through the passage T.

In the above embodiment, the determination unit 7 sets the search range SR at a position a predetermined distance d forward from the position of the top of the head H, or at a position a predetermined distance d backward from the position of the top of the head H. However, this is not limited to this. For example, if the object range OR includes ranges both in front of and behind the top of the head H that are at least the predetermined distance d away from the top of the head H, the determination unit 7 can set the search range SR at a position a predetermined distance d forward from the position of the top of the head H, and at a position a predetermined distance d backward from the position of the top of the head H.

In the above embodiment, the determination unit 7 determines that the pedestrian who entered the passage T is carrying luggage when the number of point clouds for each height position in the search range SR is equal to or greater than the threshold, that is, when any of the number of point clouds for each height position is equal to or greater than the threshold. However, this is not limited to this. It is also possible to identify a combination of height positions with the largest total number of point clouds from the number of point clouds for each height position, and determine that the pedestrian who entered the passage T is carrying luggage when the total number of point clouds for the identified combination of height positions is equal to or greater than the threshold. In this way, the difference between the measurement points obtained for the person and the measurement points obtained for the luggage becomes more clear, making it possible to more accurately determine whether the pedestrian who entered the passage T is carrying luggage. In this case, in the above embodiment, the determination unit 7 identifies the combination of "height position 3" and "height position 4" as the combination of height positions with the largest total number of point clouds. The determination unit 7 then determines that the pedestrian who entered passage T is carrying baggage because the sum of the number of point clouds at "height position 3" and the number of point clouds at "height position 4" exceeds the threshold value.

Furthermore, in the above-described embodiment, the traffic monitoring device 2 is configured as a part of the gate device 1. However, this is not limited to this. The traffic monitoring device 2 may be configured as a device separate from the gate device 1, or as a part of a device other than the gate device 1.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above-mentioned embodiments, and modifications and variations are possible based on the technical concept of the present invention.

1...Gate device, 2...Traffic monitoring device, 3...Device body, 4...Control unit, 5...Detection unit, 6...Point cloud data acquisition unit, 7...Determination unit, 8...Monitoring unit, 31...Information reading unit, 32...Gate

Claims (5)

A detection unit that detects an object passing through a monitoring area;
a determination unit which regards the highest point of the point cloud data acquired by the point cloud data acquisition unit above the monitoring area as the top of the head of a pedestrian, sets a search range for luggage based on the position of the top of the head, and determines whether the pedestrian is carrying luggage based on the number of point clouds at each height position in the search range;
a monitoring unit that monitors pedestrians passing through the monitoring area based on a detection result of the detection unit and a determination result of the determination unit;
23. A traffic monitoring device comprising: The traffic monitoring device according to claim 1, wherein the determination unit sets the search range to at least one of a position a predetermined distance forward in the direction of travel of the pedestrian in the monitoring area from the position of the top of the head and a position a predetermined distance backward in the direction of travel of the pedestrian in the monitoring area from the position of the top of the head. The traffic monitoring device according to claim 1 or 2, wherein the determination unit determines that the pedestrian is carrying baggage if any of the point cloud numbers for each height position is equal to or greater than a threshold value. The traffic monitoring device according to claim 1 or 2, wherein the determination unit identifies a combination of height positions that results in the largest total point cloud number, and determines that the passerby is carrying baggage if the total point cloud number of the identified combination of height positions is equal to or greater than a threshold value. A traffic monitoring device according to any one of claims 1 to 4,
an information reading unit that reads pass information from the pass medium;
a gate that allows the pedestrian to pass through the monitoring area when opened and prevents the pedestrian from passing through the monitoring area when closed;
A control unit that opens and closes the gate;
Including,
The control unit is configured to open the gate based on the passing ticket information, and to close the gate based on the number of people allowed to pass included in the passing ticket information and the monitoring result of the traffic monitoring device.
Gate device.