JPH052036B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an improvement in a moving object tracking device that tracks the movement of an object within a predetermined area.

[Conventional technology]

Crimes occurring in buildings have recently increased and have become a social problem. For example, crimes have occurred where elevator cars in residential buildings are closed rooms, which is exploited to assault passengers (especially women) inside the cars, and elevator halls and stairs are common areas in buildings where there are few people at night. Many crimes also occur on landings and passageways. In addition, buildings other than residential buildings, such as department stores, stores, and office buildings, have common spaces such as hallways and halls that can be used freely by employees and an unspecified number of people other than employees, and where employees are not employees. If there is a dedicated area adjacent to which people are prohibited from entering, there is always a risk that crimes such as theft will occur. Furthermore, buildings with entrances and exits facing the road outside the building are environments where outsiders can easily break into the building, and crimes such as theft are common.

As a measure to prevent crimes occurring inside and outside the building as mentioned above, for example, the elevator hall, which is a common place where crime is likely to occur inside and outside the building, such as the monitoring and control device described in Japanese Patent Application No. 102088/1988,
One of the people in a designated area such as a passageway or road, 1
The behavior of people is tracked by measuring means, the characteristics of people's behavior within the above-mentioned area are analyzed and extracted by analysis means, and it is determined that these characteristics satisfy the specified conditions, that is, the conditions for suspicious behavior. When a judgment is made by the judgment means, a crime prevention control device (alarm device, warning device, etc.) is activated to automatically detect a person behaving suspiciously at an early stage, issue a warning to the person in question, and set up a vigilance system to prevent crime. is proposed. In addition, like the elevator monitoring and control device described in Japanese Patent Application No. 102090/1983, the behavior of passengers in the elevator hall is tracked, and the said passengers do not take the expected actions when using the elevator (for example, when the car arrives). There has also been proposed a system that detects when a passenger fails to board the vehicle, and when the number of times this occurs increases, the passenger is determined to be a suspicious person and a crime prevention control device is activated. This is shown in Figure 4~
This will be explained using FIG.

FIG. 4 is an overall configuration diagram of a conventional moving object tracking device. In Figure 4, 1 is an elevator car installed in a 5-story building, and 21 to 25 are 1 to 5
In the elevator hall of the floor, 10 is an elevator monitoring and control device. Elevator monitoring and control device 10
includes a measuring means 7 that is connected to a television camera 2A installed to photograph the situation in the elevator hall 22 on the second floor, and tracks the movement of the passengers 3 in the elevator hall 22 by analyzing the captured image; analysis means 8 for detecting a situation in which the tracked passenger does not take a scheduled action when using the elevator, based on the tracking state by the means 7 and the elevator state by the elevator control device 30, and counting the number of times the situation occurs; , and a determining means 9 that operates the security control means 11 when it is detected that the number of occurrences exceeds a specified value.

The crime prevention control means 11 is located in the elevator hall 2 on the second floor.
A warning is issued to passengers in the elevator hall 22 through a speaker 2B provided in the elevator hall 2, and a warning is issued to the manager through a speaker 12 provided in the manager's room. The crime prevention control means 11 also issues a command to the elevator control device 30, which controls the starting, running, and stopping of the car 1, door opening/closing operations, call registration, etc., to prevent the car 1 from stopping at a specific floor. .

FIG. 5 is a system configuration diagram of the elevator monitoring and control device. In FIG. 5, 2C indicates that the television camera 2A captures images at short intervals (for example, every second).
30 times) to automatically track the movement of passengers in the elevator hall 22 on the second floor, and send information representing the tracking status (X, Y coordinates of position, area, status, etc.) to tracking signals for each channel. 201
This is a well-known moving object position detection device that outputs as .about.208. In this conventional example, the moving object position detection device 2C is provided with 8 channels, and a maximum of 8 channels are provided.
It is now possible to track individual passengers separately.
2D is a monitor television provided in the manager's room, which is connected to the moving object position detection device 2C and displays images and tracking status taken by the television camera 2A.

FIG. 6 shows an example of an image of the monitor television 2D taken by the television camera 2A disposed on the ceiling of the elevator hall 22. In Fig. 6, 22A is the elevator landing button, 22B is the landing door, and
The axes and Y-axes are adjusted in advance so that their origin o is at the center of the elevator hall 22. S ₁ to S ₈ are measurement start points representing initial positions when tracking is started. Also, in this conventional example, the television camera 2A
The darkest point of the image (corresponding to a person's head) is detected, and its center of gravity is set as position Pi (i = 1 to 8), and a suitable size (for example, a TV camera is placed above the person) is placed around it. Considering the size when viewed through 2A, the size is such that it does not overlap with other people)
Set the window Wi (i=1 to 8). By setting this window (i=1 to 8), even if there are many other scotomas (other people), a predetermined movement can be tracked without being affected by other scotomas. Further, the moving object position detection device 2C
is given a control signal 209 from an action content determination device 2E, which will be described later, and this control signal 209
Monitor TV 2D screen display, window
You can control the erasure of Wi (i = 1 to 8), setting to arbitrary coordinates, starting and ending tracking, and outputting information regarding arbitrary windows (position data, area of scotoma in the window, and status), etc. .

Returning to FIG. 5, 2E is an action content determination device consisting of a microcomputer, with a CPU 13, ROM
14, RAM 15, input circuit 16 and output circuit 1
Consists of 7. Signal 2 from output circuit 17
Ea to 2Ec are all crime prevention command signals, signal 2Ea is a warning command signal that becomes "H" when commanding to issue a warning to passengers in the elevator hall 22, and signal 2Eb is a warning command signal to issue a warning to the manager. Alarm command signal that becomes "H" when commanding, signal 2
Ec is a stop prevention command signal that becomes "H" when instructing the car 1 not to stop at a specific floor (in this case, the elevator hall 22 where the television camera 2A is installed). Reference numeral 18 indicates a well-known warning device provided in the manager's room, which selects the content corresponding to the warning command signal 2Ea and broadcasts it through the speaker 2B. 1
Reference numeral 9 denotes a well-known alarm device, which selects and broadcasts content according to the alarm command signal 2Eb through the speaker 12.

Reference numeral 30 denotes a well-known elevator control device, which includes a well-known car call registration circuit 31 that inputs a destination button signal from an operation panel 1F provided in the car 1 to register a car call for the floor desired by the passenger, and a car call registration circuit 31 for registering the car call for the floor desired by the passenger. A notification for registering a hall call for calling car 1 by inputting up button signals and down button signals from the hall buttons provided in elevator halls 21 to 25 (in the illustrated example, only the second floor hall button 22A is shown). The hall call registration circuit 32, the operation control circuit 33 that controls the starting, running, stopping of the car 1, door opening/closing, etc. in response to the registered car calls and hall calls, and the stop prevention command signal 2Ec. If "H" is input, 2
It consists of a well-known stop prevention circuit 34 that outputs a signal to invalidate the registration of floor car calls and hall calls.

Next, the operation of the above-mentioned conventional device will be explained according to the flowcharts shown in FIGS. 7 and 8. The operations according to this flowchart are executed by a calculation program stored in the ROM 14 of the action content determination device 2E.

In the calculation program shown in FIG. 7, when the power is turned on, initial settings are performed in step (700).
In this initial setting step (700), RAM1
5 to a predetermined value such as "o", set each window Wi to a predetermined coordinate corresponding to the measurement start point Si for the moving object position detection device 2C, or set the data in the tracking signal 201 to a predetermined value such as "o". ~20
You can set 8 output modes or monitor TV 2D.
A control signal 209 is output for initial settings such as initializing the screen. Also, a warning device 28, an alarm device 19, and a stop prevention circuit 34, which are crime prevention control devices.
The crime prevention command signals 2Ea, 2Eb, and 2Ec are set to "L" and output. After this initial setting step (700) is completed, the periodic (in this conventional example)
Repeat steps (701) to (717) every 0.1 seconds).

First, in step (701), the tracking signal 2 is sent from the moving object position detection device 2C via the input circuit 16.
Input 01 to 208 and select each window Wi (i=1
~8) For each position coordinate data xi, yi, area data (representing the area of the dark spot within the window Wi) Zi, and status data (tracking data Qi, etc.)
Set in RAM15. In addition, an elevator status signal is input from the elevator control device 30, and car position floor data CP (CP = 1st to 5th floor) and operation direction data DR (DR = 1 when the direction is upward, DR = 2 when the direction is downward) are input. , DR = 0 when there is no direction), door switch data DS (DS = 0 when the door is open, DS = 1 when the door is closed), elevator status data such as hall call data and car call data are stored in the RAM 15. Set.

Subsequently, in step (702), variable data i (set in the RAM 15) corresponding to each window Wi is initialized to "1". After that, step (703) ~ for all windows W ₁ ~ W ₈
(717) will be repeated.

In step (703), it is determined whether or not the passenger within the window Wi is being automatically tracked. If automatic tracking is not in progress, the tracking data Qi is "0" and the process advances to step (704). In step (704), it is determined whether a passenger is detected within the window Wi. If there is a passenger within the window Wi, the area data Zi will be at least larger than a constant value Ro (preset in the ROM 14), so proceed to step (705) and automatically track the window Wi. A control signal 209 is outputted via the output circuit 17 to start the process. And step (709)
Then, the uplink service counter NUi and the downlink service counter NDi for car 1 after the start of tracking are counted and their total value Ni is calculated.

The number counters NUi, NDi, and Ni are all RAM
It is set within 15. This step (709) will be explained in detail according to steps (720) to (730) in FIG. In the figure, steps (720) to (724) show the processing for counting the uplink service number counter NUi, and steps (725) to (729) show the processing for counting the downlink service number counter NDi. Step (721) is to determine whether or not the flag FUi indicating whether or not car 1 has served the second floor in the upward direction is set and reset.
Arrive at the floor (CP=2) in the upward direction (DR=1),
If the door is open (DS=0), the flag FUi is set to "1" in step (722); otherwise, the flag FUi is reset to "0" in step (724). Therefore, in step (720), car 1
After arriving at the second floor in the upward direction and opening the door, the flag
Since FUi = "1", the door switch data DS is "0" or "1" immediately after car 1 closes its door to respond to a call on another floor or to wait as an empty car. When this happens, the process advances to step (723), where the uplink service counter NUi is incremented by "1", and the flag FUi is reset to "0" in step (724).
The downlink service counter NDi is also incremented in the same manner.

In this way, by counting the number of services for each service direction, that is, the number of times a passenger on the second floor could have boarded car 1, NUi and NDi, step (730) calculates the number of services Ni, the number of upstream services NUi, and the number of downbound services. This is set as the sum of NDi, and the process of counting the number of services in step (709) is completed.

If there are no passengers within the window Wi at step (704), the area data Zi is "0", so proceed to step (716), where the next window
Variable data i to perform processing for Wi+1
Counts up by "1".

When tracking of the passenger within the window Wi is started, the tracking data Qi becomes "1" in step (703), so the process proceeds to step (706), where it is determined whether or not to end automatic tracking. When the tracked passenger leaves the elevator hall 22 by boarding car 1 or leaving the elevator hall 22, the position coordinates become x _i <−X _H or x _i >X _H , or y _i < -Y _H or y _i > YH, so in step (707) the number counters NUi, NDi and Ni are set to “0”.
At the same time, the window Wi is set to the measurement start point Si, and a control signal is sent via the output circuit 17 so that the message (described later) displayed on the screen of the monitor television 2D erases the blinking display (described later) of the window. 209 is output.

While the passenger being tracked is in the elevator hall 22, the service count counters NUi and NDi are calculated in step (709) as described above.

Steps (710) to (715) are the number of services Ni
The system determines the degree of suspiciousness of the passenger's behavior in stages according to the situation, and takes appropriate crime prevention actions. The specified values M ₁ , M ₂ , M ₃ are stored in advance in the ROM14.
In this embodiment, they are set to 5 times, 10 times, and 15 times, respectively.

Therefore, when the value of the number of services Ni is smaller than the specified value _M1 , the process proceeds from step (710) to step (716).
Nothing is done as a crime prevention operation. However, when the value of the number of services Ni is M ₁ ≦N ₁ <M ₂ , the process proceeds to steps (710) → (711) → (712) → (716).
In step (711), the warning command signal 2Ea is set to "H" and outputted via the output circuit 17. Therefore, the warning device 18 issues a soft warning through the speaker 2B provided on the ceiling of the elevator hall 22, for example, by broadcasting a guidance message such as "Press the hall button and wait." This guidance broadcast is repeated periodically (for example, every 10 seconds) until the warning command signal 2Ea is reset to "L". At the same time, in step (711), the output circuit 17 is configured to display a message indicating that a warning has been issued (for example, "Warning in progress") on the screen of the monitor television 2D installed in the manager's room.
A control signal 209 is outputted via. If the passenger being chased follows the above warning and gets into car 1 or leaves the elevator hall 22, the process proceeds to steps (706) → (707) → (708), where the warning command signal 2Ea is sent. Reset to "L".

Next, when the value of service count Ni becomes N ₂ ≦ Ni < M ₃ , step (710) → (711) → (712)
→ (713) → (714) → (716), and in step (713), the alarm command signal 2Eb is set to "H" and outputted via the output circuit 17. As a result, the alarm device 19 broadcasts "There is a person behaving suspiciously in the elevator hall on the second floor" through the speaker 12 provided in the manager's room, and issues an alarm to the manager. At the same time, in step (713), a control signal 209 is outputted via the output circuit 17 so that a portion corresponding to the window Wi on the screen of the monitor television 2D is displayed blinking. This blinking display allows the manager to confirm the position of the person in the elevator hall 22 who is behaving suspiciously.

This warning to the manager is repeated periodically (for example, every 5 seconds) until the tracked passenger disappears from the elevator hall 22 and the warning command signal 2Eb is reset to "L" in step (708). Similarly, the blinking display of the window on the screen of the monitor television 2D continues until it is reset in step (707).

Finally, when the value of service count Ni becomes Ni≧M ₃ , step (710) → (711) → (712) →
Proceed to (713) → (714) → (715) → (716),
In step (715), the stop prevention command signal 2Ec is set to "H" and outputted via the output circuit 17. As a result, the stop prevention circuit 34 in the elevator control device 30 prohibits registration of up-calls, down-calls, and car calls for the second floor, and prevents the car 1 from stopping at the second floor.

In this way, the processing from steps (703) to (716) is performed for all windows _W1 to _W8 , and when the variable i becomes greater than 8 at step (717), the processing in this calculation cycle is terminated.

In this way, in the conventional example described above, the movement of each passenger in the elevator hall is tracked by the moving object position detection device 2C using imaging by a television camera, and the arrival of the car is determined based on the tracking state and the elevator state. The number of times the car is not boarded, i.e., the number of times the car is serviced during the tracking period, is counted, and if the number of services exceeds a specified value, the tracked passenger is considered to be acting suspiciously, such as ambushing the victim or looking for an opportunity to commit a crime. The system determines that the person is acting suspiciously and issues a warning to the person whose behavior is suspicious, and also issues an alert to the administrator, thereby making it possible to prevent crimes. Furthermore, since the manager does not need to constantly monitor the TV monitor, the burden on the manager can be reduced. Furthermore, since the elevator car is prevented from stopping on a floor where there is a person behaving suspiciously, it is possible to prevent crimes in which the elevator car is misused. Furthermore, since the crime prevention control device is operated in a stepwise manner according to the number of times of service, appropriate crime prevention can be performed according to the accuracy of determining the suspicious behavior of the person.

[Problem that the invention seeks to solve]

Conventional moving object detection devices are configured as described above, so when two windows that are tracking a passenger intersect, one window loses track of the passenger it was tracking and the other window If the passenger mistakenly tracks the passenger being chased or the passenger being chased approaches the entrance/exit of the elevator hall 22, waiting at the measurement start point (= tracking data)
Two or more windows may track one passenger, such as when the window with Qi = "0" captures this passenger and starts tracking. For this reason, there was a problem in that unnecessary tracking was performed on a limited number of windows.

This invention was made to solve the above-mentioned problems, and uses a plurality of measuring means to track a plurality of objects moving within a predetermined area, and outputs a position signal representing each object's location. An object of the present invention is to obtain a moving object tracking device that does not reduce efficiency even when two or more measuring means track the same object.

[Means for solving problems]

In the moving object tracking device according to the present invention, the calculation means calculates the correlation between position signals that are the outputs of the plurality of measurement means for tracking the movement of the plurality of objects within a predetermined area, and the determination means determines the correlation value as a predetermined value. The configuration is such that when a set of two measuring means with a higher height is detected, one of the two measuring means is made to stop tracking.

[Effect]

In this invention, the calculation means calculates the correlation between the positions of the objects from the position signals of the objects measured by the plurality of measurement means and output, and outputs the correlation value, and the correlation value is greater than or equal to a specified value. If the height increases, the determining means determines that the same object is being tracked by two or more measuring means, and outputs a tracking stop command signal to one of the measuring means to stop the measuring means for the tracked object. can be limited to one.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 to 3 and FIGS. 5, 6, and 8 used in the description of the conventional example. In this embodiment, a case will be described in which the present invention is applied to the elevator monitoring and control device described in the conventional example, but the present invention is not limited to this and can generally be applied to any device that tracks a moving object. Needless to say.

FIG. 1 is an overall configuration diagram of a moving object tracking device in this embodiment. In FIG. 1, reference numeral 40 denotes a moving object tracking device, and a plurality of measuring means 7 and a calculation means 41 for calculating a correlation value between position signals from the measuring means 7.
and a determining means 42 which, when detecting a set of two measuring means whose correlation value is higher than a specified value, causes one of them to stop tracking.

Next, the operation of the above-mentioned moving object tracking device is shown in Fig. 2.
This will be explained according to the flowcharts shown in FIGS. 3 and 8. The operations according to this flowchart are executed by a calculation program stored in the ROM 14 of the action content determination device 2E.

Figure 2 is a flowchart corresponding to Figure 5 of the conventional example, and is the same as the conventional example except that step (740) is added, so steps (700) to (717)
A description of the operations up to this point will be omitted.

Step (740) is performed for each window Wi (i=1
8), the difference (distance) in the position coordinates of the object being tracked is accumulated for a predetermined period T ₀ (=40, equivalent to 4 seconds), and a value proportional to the reciprocal of that value is determined as the correlation value, and the above correlation is calculated. When a pair of two windows with a value higher than a predetermined value is detected, a tracking stop command is issued to the window with the larger window number (described later), and steps (701 to 701)
Similar to (717), it is executed periodically (= every 0.1 seconds). This will be explained using the detailed flowchart shown in FIG. In addition, step (741) ~
(747) and (750) to (755) correspond to the calculating means 41, and steps (748) and (749) correspond to the determining means 42.

In FIG. 3, first, in step (741),
The elapsed time timer t is counted up by "1" (equivalent to 0.1 seconds), and in step (742), the elapsed time is counted up for a predetermined period of time.
It is determined whether T ₀ has elapsed.

If the elapsed time timer t<T ₀ , the process continues at step (744), but the elapsed time timer t
If ≧T ₀ , in step (743), the elapsed time timer t is initialized to "0", and the flag FLAG indicating that it is time to judge the correlation value is set to "1" (this flag FLAG is , step (744)
- (754) is completed and its role is completed, it is reset to "0" in step (755)).

In step (744), each window W ₁ to _{W 8}
Variable data (hereinafter referred to as window numbers) i and j corresponding to are initialized to "1" and "2", respectively. Thereafter, the processing of steps (745) to (754) will be repeated for windows _W1 to _W8 .

In step (745), the window Wi displays the position coordinates xi, yi of the passenger being tracked (measurement start point Si if waiting) and the window Wj (j>i) displays the position coordinates xi, yi of the passenger being tracked (measurement start point Si if waiting). Position coordinates of starting point Sj)
Based on xj, yj, the distance √(-) ² + (
−
yj) ² , add it to the cumulative value Lij of the distance calculated up to the previous calculation period, and add this to the new cumulative value Lij.
Set as .

In step (746), it is determined whether it is time to determine the correlation value. If the predetermined period T0 has not elapsed since the previous judgment time, that is, if the flag FLAG= ₀ , the process proceeds to step (751) without doing anything, but if the predetermined period T0 has elapsed, the flag FLAG= ₀ . 1, so proceed to step (747), where the correlation value Cij is calculated by multiplying the reciprocal of the cumulative value Lij of the distance between the windows Wi and Wj during the predetermined period _T0 by a constant value _L0 . do.
In step (748), it is determined whether there is a strong correlation between the tracking methods of windows Wi and Wj. If there is a strong correlation between the positions of the two windows Wi and Wj, and the correlation value Cij takes a value greater than the predetermined value _C0 , the process proceeds to step (749), where tracking is performed for the window Wj with the larger window number. A control signal 209 is outputted via the output circuit 17 to stop the measurement and set the measurement start point Sj. Here the predetermined value
C ₀ is the tracking signal 20 of the moving object position detection device 2C
The accuracy varies from 1 to 208. If the accuracy is very high and the position coordinates (xi, yi) and (xj, yj) of the two windows Wi, Wj tracking the same object match exactly, the cumulative value within a predetermined period T ₀ Lij is 0, and its correlation value Cij
becomes infinitely large. However, in reality, it is unlikely that the position coordinates (xi, yi) and (xj, yj) match at all, so it is necessary to set the predetermined value C ₀ appropriately according to its accuracy and the predetermined period T ₀ . (In this example, a moving object position detection device 2C with relatively high accuracy is used, and the error between the position coordinates (xi, yi) and (xj, yj) on the X-Y axis is within 1. During period T ₀ (=4 seconds), constant value L ₀ = 10000,
The predetermined value C ₀ is set to 250).

In step (750), when the determination regarding windows Wi and Wj is completed, the cumulative value Lij is reset to "0". Then, in step (751), the larger window number j is increased by "1" in order to calculate the correlation between the windows Wi, Wj, and Wi+1. In step (752), window number j (j=1, i+1,
...Determine whether all processing for 8) has been completed. If the window number j<9, steps (745) to (751) are repeated again, but if the window number j≧9, the process ends at step (753) to finish the process for window Wi and then process window Wi+1. Set window number i to "1" with
, and the value of window number j is initialized to a value larger by "1" than the newly set window number i. And in step (754),
It is determined whether all processing has been completed for window number i (i=1, 2, . . . 7). If window number i<8, step again (745)~
The process of (753) is repeated, but if the window number i≧8, the process proceeds to step (755), the flag FLAG is reset to "0", and all correlation value calculation and determination processes are completed.

In this way, in the above embodiment, in which the behavior of passengers in an elevator hall is tracked, the distance between the position coordinates of each window is accumulated for a predetermined period, and a value proportional to the reciprocal of that value is determined as a correlation value. When a pair of two windows with a correlation value higher than a predetermined value is detected, a tracking stop command is issued to one of the windows to stop tracking, so it is possible to eliminate unnecessary tracking windows.

Note that in the above embodiment, when one passenger is being tracked by three windows W ₁ , W ₃ , and W ₅ , tracking for window W ₅ is stopped at the determination of each of windows W ₁ and W ₅ . The commands are issued twice, but this is due to the simplified processing procedure, and there is no problem with the operation of Window _W5 .

Also, since the tracking stop command is always issued to the window with the larger window number, the tracking stop command is never issued to any of the above three windows W ₁ , W ₃ , and W ₅ . One window is meant to continue tracking. The same thing can be done even if the tracking stop command is issued to the window with the smaller window number. Furthermore, in addition to the above-mentioned embodiments, there are many other possibilities as to which of the two windows tracking the same passenger the tracking stop command should be issued to. Tracking the measurement start point position of other waiting windows and the same passenger 2
Considering the positions of the measurement start points of the two windows, for example, windows W ₁ to W ₄ and W ₅ to _{W 8}
A method may be adopted in which the window for issuing the tracking stop command is determined so that the number of waiting windows in each group is not biased.

Furthermore, in the above embodiment, a value proportional to the reciprocal of the cumulative value of the distance during the predetermined period _T0 is calculated as the correlation value between the positions of the two windows, but the method of calculating the correlation value is not limited to this. do not have. For example, a correlation value (for example, a value corresponding to the cumulative value of the difference in the moving direction, the cumulative value of the difference in the moving speed, etc.) regarding the way the position changes within a predetermined period (for example, the moving direction, the moving speed, etc.) is calculated, It is also conceivable to combine this correlation value with the distance between the current positions (xi, yi) and (xj, yj) to obtain a new correlation value.

Furthermore, if the position coordinates of window Wi in the previous calculation cycle are xpi and ypi, the moving direction is
tan ^-1 (yi - ypi / xi - xpi), and the movement speed is calculated as the distance traveled per 0.1 seconds √ (-) ² + (-) ² . In this way, both the direction of movement and the speed of movement are based on changes in position, so even if you use these to calculate the correlation value between two windows, you are ultimately calculating the correlation value based on position. Nothing but.

Further, in the embodiment described above, a moving object position detection device that receives an image captured by a television camera as an input signal is used as a measuring device for tracking the movement of an object, but the measuring device is not limited to this. For example, the movement of an object may be tracked based on input signals from an infrared camera or an ultrasonic transducer. I also tried to detect and track the scotoma, but
It may also be something that detects and tracks bright spots or specific colors or shapes.

〔Effect of the invention〕

As described above, according to the present invention, in an apparatus in which the movement of a plurality of objects within a predetermined area is tracked by a plurality of measuring means, the correlation between the position signals that are the outputs of the measuring means is determined by the calculating means, and the determining means When a pair of two measuring means whose correlation value is higher than the specified value is detected, one of the two measuring means is configured to stop tracking.
It is possible to reduce unnecessary tracking of the same object by more than one measuring means, and to obtain an efficient moving object tracking device.

[Brief explanation of the drawing]

FIG. 1 is an overall configuration diagram of an embodiment of the moving object tracking device of the present invention, FIG. 2 is a flow chart showing the operation of the moving object tracking device of the present embodiment, and FIG. A flowchart showing the subroutine of step (740) for calculating and determining the correlation value of a position signal, FIG. 4 is an overall configuration diagram of a conventional moving object tracking device, FIG. 5 is a system configuration diagram of the conventional device, and FIG. The figure is a display diagram showing an example of a monitor image displayed on the monitor television 2D, FIG. 7 is a flowchart showing the operation of the conventional device, and FIG. 8 is a step for counting the number of elevator services in the flowchart of FIG. (709) is a flowchart showing the subroutine. In the figure, 2C is a moving object position detection device, 7
is a measuring means, 8 is an analysis means, 9 is a judgment means, 41
42 is a calculating means and a determining means. In addition, in the figures, the same reference numerals indicate the same or equivalent parts.

Claims (1)

[Claims] 1. A moving object equipped with a moving object position detection device that tracks the movement of a plurality of objects within a predetermined area using a plurality of measurement means and outputs a position signal representing the location of each of the objects. In the object tracking device, a calculation means calculates the correlation between the position signals between the objects outputted from the plurality of measurement means and outputs a correlation value, and a calculation means outputs a position signal in which the correlation value becomes higher than a specified value. determination means for determining whether to stop tracking the object and outputting a tracking stop command signal to one of the measurement means when a set of two measurement means is detected; A moving object tracking device characterized in that when a stop command signal is received, tracking of the object is terminated midway. 2. Claims characterized in that the calculation means accumulates the difference between the position signals output from the two measurement means for a predetermined period, and outputs a value proportional to the reciprocal of the accumulated value as a correlation value. The moving object tracking device according to item 1.