Traffic monitoring device

Abstract

To provide a passage monitoring device capable of preventing a baggage carried by a passenger from being erroneously detected as a person (i.e., another passenger) while suppressing the time required for processing.SOLUTION: In a gate device 1, a passage monitoring device 2 includes: a detection unit 5 detecting an object passing through a passageway; a determination unit 7 assuming the highest point of point group data acquired by a point group data acquisition unit 6 above the passageway as a head peak part of a passenger, setting a search range of a baggage based on a position of the head peak part, and determining whether the passenger carries a baggage based on the number of point groups for each height position in the search range; and a monitoring unit 8 monitoring the passenger passing through the passageway based on a detection result made by the detection unit 5 and a determination result made by the determination unit 7.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a traffic monitoring device for monitoring pedestrians. [Background technology]

[0002] Conventionally, many gate devices such as automatic ticket gates include a passage sensor consisting of multiple photoelectric sensors arranged along the passage direction, and this passage sensor detects a person (hereinafter referred to as a "passenger") who is about to pass through the passage (see Patent Document 1, etc.). This type of device is often configured to close the gate and prevent passage through the passage when it is determined that so-called "tailgating" has occurred based on the detection result of the passage sensor. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2001-216540 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, when a pedestrian is carrying luggage such as a suitcase, the passage sensor may erroneously detect the luggage as a person, i.e., as a different pedestrian from the pedestrian. Such erroneous detection may lead to the gate device misjudging a "tailgating" and unnecessary gate closures that accompany 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 can meet real-time requirements.

[0005] It should be noted that such a demand is not limited to gate devices, but is common to devices that require monitoring of pedestrians.

[0006] Therefore, an object of the present invention is 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). [Means for solving the problem]

[0007] According to one aspect of the present invention, a traffic monitoring device includes a detection unit that detects objects passing through a monitored area, a determination unit that sets the highest point of point cloud data acquired by a point cloud data acquisition unit above the monitored area to be 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, and a monitoring unit that monitors pedestrians passing through the monitored area based on the detection results of the detection unit and the determination results of the determination unit. Effect of the Invention

[0008] According to the present invention, it is possible 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). [Brief description of the drawings]

[0009] [Figure 1] 1 is a diagram showing an external configuration of a gate device according to an embodiment; [Diagram 2] FIG. 2 is a block diagram showing a control system configuration of the gate apparatus according to the embodiment. [Diagram 3] 13 is a flowchart illustrating an example of a determination process performed by a determination unit. [Figure 4] FIG. 13 is a diagram for explaining a determination process performed by a determination unit; [Diagram 5] 11 is a diagram for explaining a determination process performed by a determination unit; FIG. [Figure 6] 13 is a flowchart illustrating an example of a monitoring process performed by a monitoring unit. [Figure 7] 13 is a flowchart illustrating an example of a monitoring process performed by a monitoring unit. [Figure 8]6 is a flowchart showing an example of control by a control unit. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.

[0011] Fig. 1 is a diagram showing the external configuration of a gate device 1 according to one embodiment of the present invention, and Fig. 2 is a block diagram showing the configuration of a control system 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., a 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 the passage T and the monitoring results of the traffic monitoring device 2, as described later.

[0012] 1 and 2, a gate device 1 according to an 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, a traffic monitoring device 2 is mainly configured by the detection unit 5, the point cloud data acquisition unit 6, the determination unit 7, and the monitoring unit 8.

[0013] The device main body 3 is installed adjacent to the passage T on the side thereof. The device main body 3 has an information reading unit 31, a gate 32, and a notification unit 33.

[0014] The information reading unit 31 is provided on the near side as seen from 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 a passable number of people indicating the number of people who can pass through the passage T. The passage ticket medium is various 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 capable of writing information to the passage ticket medium in addition to reading the passage ticket information from the passage ticket medium.

[0015] Gate 32 is provided on the rear side as seen by a pedestrian moving toward passage T, that is, at a portion of device main body 3 on the exit side of passage T. Gate 32 opens and closes by rotating, and is configured to permit pedestrians to pass through passage T in the direction of the arrow when open, and to prevent pedestrians from passing through passage T in the direction of the arrow when closed.

[0016] The notification unit 33 is provided at an arbitrary location of the device main body 3. The notification unit 33 is provided mainly for notifying a passerby or a security guard when the passerby is prevented from passing through the passage T. Although not particularly limited, the notification unit 33 may include a light-emitting unit that emits a notification light, a sound-producing unit that generates a notification sound, and / or a display unit that displays a notification.

[0017] The control unit 4 mainly controls the opening and closing of the gate 32 and the operation of the notification unit 33. The control by the control unit 4 will be described later.

[0018] 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 layers, 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) facing the upper light receiving unit and lower light emitting unit across the passage T.

[0019] The upper light-receiving unit 5a includes a plurality of light-receiving elements arranged along a passage T, and the upper light-emitting unit includes a plurality of light-emitting elements arranged to face 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 to face the plurality of light-receiving elements of the lower light-receiving unit 5b across the passage T.

[0020] 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.

[0021] Here, the gate device 1 may include another device main body that faces the device main body 3 across the passage T and forms a pair. In this case, the other device main body has a gate that forms a pair with the gate 32. Also, 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 main body on the passage T side.

[0022] The point cloud data acquisition unit 6 is configured, for example, by 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 periphery of the entrance of the passage T by irradiating distance measurement light such as laser light onto the predetermined range including the periphery of the entrance of the passage T, and acquire three-dimensional measurement data of a large number of distance measurement points within 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.

[0023] The determination unit 7 is configured to determine whether or not a pedestrian passing through the passage T is carrying baggage, as necessary, based on the point cloud data acquired by the point cloud data acquisition unit 6. That is, the determination unit 7 determines the presence or absence of baggage. The determination process by the determination unit 7 will be described later.

[0024] The monitoring unit 8 monitors pedestrians (people) passing through the passage T based on the detection result of the detection unit 5 and the determination result of the determination unit 7. The monitoring process by the monitoring unit 8 will be described later.

[0025] [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 flowchart showing an example of the determination process by the determination unit 7.

[0026] 3, in step S11, it is determined whether or not an object has entered the passage T. Such a determination is made based on the detection result of the detection unit 5. Then, if an object has entered the passage T, the process proceeds to step S12.

[0027] In step S12, it is determined whether or not multiple (mainly two in this case) objects have successively entered the passage T. Then, if multiple objects have not successively entered the passage T (i.e., if one object has entered the passage T), the process returns to step S11, and if multiple objects have successively entered the passage T, the process proceeds to step S13. This is because, if only one object has entered the passage T, it is not necessary to determine whether the passerby is carrying baggage.

[0028] In step S13, the point cloud data acquired by the point cloud data acquisition unit 6 is input.

[0029] In step S14, the object range OR is defined based on the point cloud data input in step S13.

[0030] 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 head H of the pedestrian.

[0031] In step S16, a search range for the luggage is set. In this embodiment, within the object range OR defined in step S14, a range that is a predetermined distance d or more away from the position of the head H detected in step S15 in the direction of travel of the pedestrian in the passage T is set as the search range SR for the luggage. The predetermined distance d is set in advance as a distance equivalent to the distance from the head of the pedestrian to the body of the luggage when the pedestrian is carrying luggage such as a suitcase.

[0032] For example, as shown in FIG. 4(a), when a pedestrian who is moving while pushing a baggage such as a carry case 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 has entered the passage T. In addition, in this example, the object range OR includes a range that is forward of the head H in the direction of travel of the pedestrian in the passage T (hereinafter simply referred to as "forward") and is at least a predetermined distance d away from the position of the head H. Therefore, the determination unit 7 sets the range of the object range OR that is a predetermined distance d or more forward from the top of the head H as the search range SR for the luggage. In other words, the determination unit 7 sets the search range SR for the luggage at a position that is a predetermined distance d forward from the position of the top of the head H.

[0033] Here, although not shown in the figure, when a pedestrian moving while pulling a baggage such as a suitcase enters the passage T, that is, when the baggage is behind 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, and inputs the point cloud data from the point cloud data acquisition unit 6. Then, the determination unit 7 defines an object range OR, detects the top of the head H, and sets a search range SR for the baggage. However, in this case, the determination unit 7 sets, in the opposite manner to the above, a 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 passage T (hereinafter simply referred to as "rear") as the search range SR for the baggage. 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.

[0034] Returning to Fig. 3, in step S17, the number of points at each height position from the passage surface of the passage T to a predetermined height (e.g., 1 m) is counted for the point cloud data within the search range SR. Note that the "height position" here is set to have a certain degree of width (e.g., about several centimeters).

[0035] In step S18, it is determined whether or not 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, and 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.

[0036] In step S19, it is determined that the pedestrian who has entered the passage T is carrying baggage (baggage present), and the determination result is transmitted to the monitoring unit 8 in step S20.

[0037] In step S21, it is determined that the pedestrian who has entered the passage T is not carrying any baggage (no baggage). Then, in step S22, the determination result is transmitted to the monitoring unit 8.

[0038] FIG. 5 shows an example of distance measurement points (top view) at each height position in the search range SR when a passerby who is moving while pushing a baggage such as a carry case enters the passage T. FIG. 5(a) shows a plurality of height positions (here, eight height positions from "height position 1" to "height position 8"), and FIG. 5(b) shows the distance 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, when the object is a person (e.g., a child), the number of distance measurement points (i.e., the number of point clouds) at each height position from the passage surface of the passage T to the predetermined height tends to be small, and when the object is baggage, the number of distance measurement points (the number of point clouds) at a specific height position increases. Therefore, by utilizing the difference between the distance measurement points obtained for such a person and the distance measurement points obtained for the baggage, and by appropriately setting the threshold value and judging whether or not there is any point cloud at each height position that is equal to or greater than the threshold value, it is possible to know whether the point cloud in the search range SR is for baggage. In this example, the number of point clouds at "height position 3" and the number of point clouds at "height position 4" are large and exceed 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.

[0039] Then, when the determination unit 7 sets the baggage search range SR to be in front of the head H and determines that there is baggage, it transmits a determination result indicating that there is baggage in front of the pedestrian to the monitoring unit 8. On the other hand, when the determination unit 7 sets the baggage search range SR to be behind the head H and determines that there is baggage, it transmits a determination result indicating that there is baggage behind the pedestrian to the monitoring unit 8. Note that, when the determination unit 7 determines that there is no baggage, it transmits a determination result indicating that the pedestrian is not carrying any baggage to the monitoring unit 8.

[0040] 3 merely illustrates an example of the determination process 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 appropriately modified as necessary.

[0041] [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 flowcharts showing an example of the monitoring process by the monitoring unit 8.

[0042] 6 and 7, in step S31, similarly to step S11 in Fig. 3, it is determined whether or not an object has entered the passage T. Then, if an object has entered the passage T, the process proceeds to step S32.

[0043] 3, in step S32, it is determined whether or not multiple objects have successively entered the passage T. Then, if multiple objects have not successively entered the passage T (i.e., if one object has entered the passage T), the process proceeds to step S33, and if multiple objects have successively entered the passage T, the process proceeds to step S38.

[0044] In step S33, it is determined that the object that has entered the passage T is a pedestrian.

[0045] 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.

[0046] In step S36, it is determined whether or not 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.

[0047] In step S38, tracking of the plurality of objects that have entered the passage T is started.

[0048] In step S39, the determination result is received from the determination unit .

[0049] In step S40, it is determined whether or not the object has reached a predetermined determination position in the passage T. This determination is made based on the detection result of the detection unit 5. Then, when the object has reached the predetermined determination position, the process proceeds to step S41. Note that the predetermined determination position is set closer to the entrance than the center position of the passage T.

[0050] In step S41, it is determined whether each of the plurality of objects being tracked is a passerby or a package using the determination result received from the determination unit 7 in step S39. That is, a passerby / package determination is performed for the plurality of objects.

[0051] In this embodiment, when the monitoring unit 8 receives a determination result from the determination unit 7 indicating that there is baggage in front of the passerby while tracking two objects that have entered the passage T in succession, 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. In addition, when the monitoring unit 8 receives a determination result from the determination unit 7 indicating that there is baggage behind the passerby while tracking two objects that have entered the passage T in succession, 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. In addition, when the monitoring unit 8 receives a determination result from the determination unit 7 indicating that the passerby is not carrying baggage, the monitoring unit 8 determines that the tracked object is a passerby.

[0052] In step S42, it is determined whether a passerby (an object determined as a passerby in step S41) has passed through the center position of the aisle T. Then, when the passerby has passed the center position of the aisle T, the process proceeds to step S43, and the center passing information indicating that the passerby has passed through the center position of the aisle T is transmitted to the control unit 4. Therefore, even if an object determined as baggage in step S41 passes through the center position of the aisle T, the monitoring unit 8 does not transmit the center passing information to the control unit 4.

[0053] In step S44, it is determined whether all pedestrians (all objects determined as pedestrians in step S41) have passed through the center position of the passage T. Then, when all pedestrians have passed through the center position of the passage T, the process proceeds to step S45.

[0054] In step S45, it is determined whether or not the pedestrian has passed through the exit of passage T. Then, when the pedestrian has passed through the exit of passage T, the process proceeds to step S46, and 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.

[0055] In step S47, it is determined whether or not all pedestrians have passed through the exit of passage T. Then, when all pedestrians have passed through the exit of passage T, the current processing ends.

[0056] 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 result of the detection unit 5 and the determination result of the determination unit 7, and more specifically, to monitor the pedestrians separately from baggage, and the flowcharts shown in Figs. 6 and 7 can be appropriately modified as necessary.

[0057] [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 flowchart showing an example of the process of the control unit 4.

[0058] 8, in step S51, it is determined whether the passing ticket information has been input from the information reading unit 31. Then, if the passing ticket information has been input, the process proceeds to step S52.

[0059] In step S52, it is determined whether the toll ticket information is correct. If the toll ticket information is correct, the process proceeds to step S53. A case where the toll ticket information is not correct will be described later.

[0060] In step S53, the number of people allowed to pass included in the passing ticket information is stored.

[0061] In step S54, the gate 32 is opened.

[0062] 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.

[0063] In step S57, it is determined whether the central passing number is equal to or less than the passable number stored in step S53. If the central passing number is equal to or less than the passable number, the process proceeds to step S58. The case where the central passing number exceeds the passable number will be described later.

[0064] 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 allowed to 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.

[0065] 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 the 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.

[0066] If the ticket 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 this flow ends. This is to prevent inappropriate pedestrians from passing through the passage T.

[0067] 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 alarm 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 alarm 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.

[0068] 8 merely shows an example of control by the control unit 4. The control unit 4 may be configured to control the opening and closing of the gate 32 based on the passage ticket information and the monitoring results of the traffic monitoring device 2, and the flowchart shown in FIG. 8 may be appropriately modified as necessary.

[0069] As described above, the gate apparatus 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 includes 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 result of the detection unit 5 and the determination result of the determination unit 7.

[0070] Therefore, even if a pedestrian carrying luggage such as a suitcase enters the passage T and two objects are detected by the detection unit 5, it is possible to monitor the pedestrian passing through the passage T after determining that one of the two objects is the pedestrian and the other of the two objects is the luggage carried by the pedestrian. Therefore, it is possible to prevent the luggage carried by the pedestrian passing through the passage T from being mistakenly detected as a person (another pedestrian).

[0071] 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 head top H of the pedestrian, sets a search range SR for luggage based on the head top 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 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. In addition, 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. Therefore, it is possible to easily determine whether the pedestrian is carrying luggage in a relatively short processing time.

[0072] In particular, the determination unit 7 sets the search range SR at a position a predetermined distance d forward in the direction of passage of the pedestrian in the passage T from the position of the top of the head H, or at a position a predetermined distance d backward in the direction of passage of the pedestrian in the passage T from the position of the top of the head H. 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.

[0073] 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 opened and prevents pedestrians from passing through the passage T when closed, and a control unit 4 that controls opening and closing of the gate 32, and 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 makes it possible to allow proper pedestrians to pass through the passage T, to prevent unnecessary closure of the gate due to erroneous detection of baggage carried by a pedestrian as a person (another pedestrian), and to prevent pedestrians in a number exceeding the number of people allowed to pass through the passage T.

[0074] 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 predetermined distance d backward from the position of the top of the head H.

[0075] 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. A combination of height positions with the largest total number of point clouds may be identified from the number of point clouds for each height position, and the pedestrian who entered the passage T may be determined to be 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, and it becomes 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. Then, since 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, the judgment unit 7 determines that the pedestrian who entered passage T is carrying luggage.

[0076] 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.

[0077] Although the embodiment of the present invention has been described above, the present invention is not limited to the above-mentioned embodiment, and it is needless to say that modifications and changes can be made based on the technical concept of the present invention. [Explanation of symbols]

[0078] 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

1. A detection unit that detects an object passing through a monitoring area; a determination unit that sets a search range for luggage based on the position of the top of the head of a pedestrian as the highest point of the point cloud data acquired by the point cloud data acquisition unit above the monitoring area, 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; 1. A traffic monitoring device comprising:

2. 2. 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.

3. The traffic monitoring device according to claim 1 , wherein the determining unit determines that the pedestrian is carrying baggage when any one of the point cloud numbers for each height position is equal to or greater than a threshold value.

4. 3. The traffic monitoring device according to claim 1, wherein the determination unit identifies a combination of height positions that results in the largest total point cloud number, and determines that the pedestrian is carrying luggage if the total point cloud number of the identified combination of height positions is equal to or greater than a threshold value.

5. 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 passage ticket information, and to close the gate based on the number of people allowed to pass included in the passage ticket information and the monitoring result of the passage monitoring device. Gate device.

Images