JP6219247B2 - Video surveillance device - Google Patents

Description

  The present invention is based on an image obtained as a result of imaging and processing a monitoring area in a moving room such as an elevator car in which a closed space is formed inside and a window for seeing the outside is provided. The present invention relates to a video monitoring apparatus that detects a staying person or staying thing.

  In recent years, the number of cameras installed for the purpose of monitoring suspicious persons, suspicious vehicles, and the like as monitoring targets is increasing in order to cope with social unrest such as an increase in crime rate. In the case of monitoring using a large number of cameras, a monitoring support technique is required for efficiently monitoring the monitoring area with limited resources of the monitoring personnel.

  As a well-known technique related to such a monitoring support technique, it is a technique for dealing with illumination fluctuations caused by external light entering from a window, and “image monitoring apparatus” that can deal with the influence of light directly reflected on the camera from the window (Patent Document) 1).

JP 2008-195495 A

  In the technique described in Patent Document 1 described above, a monitoring area is photographed in order to have a function of weakening the influence of external light entering the photographing field of view of a camera in a car that can be regarded as a moving room from a glass window provided in an elevator door. A polarizing member such as a polarizing film is provided between the camera and the object to be monitored and the window of the monitoring area with the polarizing axes orthogonal to each other. Visibility when viewing the inside of the car through the window from the outside of the car and the visibility of the image as a result of shooting (imaging) the inside of the car with the camera will be deteriorated. There is a problem of being unable to satisfy.

  In addition, when using a polarizing film, the size that can be attached to the window becomes expensive, so there is a problem that the cost tends to be high on the equipment, and it deteriorates by continuously receiving external light. In such a case, it takes time and money to replace a deteriorated item with a new one, and there is a problem that the cost is high in terms of maintenance management.

  The present invention has been made to solve such problems, and its technical problem is that it does not impair the visibility of the image in the moving room and the image of the imaging result in terms of equipment and maintenance management. An object of the present invention is to provide a video monitoring apparatus that can avoid high costs and eliminate the influence of illumination fluctuations caused by external light.

In order to solve the above technical problem, the present invention includes an imaging unit that forms a closed space inside and captures imaging data by imaging a monitoring area in a moving room provided with a window for seeing outside. A video processing unit that detects at least one of a staying person and a staying object in the moving room based on a video obtained by performing image processing on the imaging data; When the stay of at least one of the staying person and the staying matter is detected based on the control, the instruction to move the moving room to a position having no optical influence on the window from outside is controlled. after issuing the control means, to issue a command to restart the imaging for monitoring to the imaging means, at least one of residence of the residence's and the retentate on the basis of the video test If it is, and performs a predetermined action operation.

  According to the video monitoring apparatus of the present invention, the above configuration avoids high costs in facilities and maintenance management without damaging the visibility of the video in the moving room or the image of the imaging result, and is caused by external light. The influence of lighting fluctuations can be eliminated. Problems, configurations, and effects other than those described above will be clarified by the following description of embodiments.

It is the side view which showed the whole schematic structure of the elevator to which the video monitoring apparatus which concerns on Example 1 of this invention is applied with the movement state of the passenger car. It is the side view which showed the whole schematic structure of the elevator with which the video monitoring apparatus which concerns on Example 1 of this invention is applied in the stop state in the specific floor of a passenger car. FIG. 3 is a diagram exemplifying an image in a car that is captured by a camera installed in the elevator car shown in FIGS. 1 and 2 and is not affected by sunlight that is registered in advance and does not have a staying person. It is the schematic which expanded and showed the principal part of the elevator in case a staying person exists without sunlight injecting into a car in the stop state in the specific floor of the car shown in FIG. It is the figure which illustrated the image in a passenger car as a result of having imaged the situation shown in FIG. 4 with the camera. It is the figure which illustrated the image in a car as a result of having imaged with the camera, when sunlight injects in the stop state in the specific floor of the car shown in FIG. 2, and a staying person does not exist. It is the schematic which expanded and showed the principal part of the elevator when sunlight injects into a car in the stop state in the specific floor of the car shown in FIG. 2, and a staying person exists. It is the figure which illustrated the image in a passenger car as a result of having imaged the situation shown in Drawing 7 with a camera. From the situation shown in FIG. 7, the control panel control in response to the instruction from the video processing device shifts to the moving state of the car shown in FIG. 1 and moves between floors where the car door window is covered by the fisher plate. It is the schematic which expanded and showed the principal part of the elevator at the time of doing. It is the figure which illustrated the image in a car as a result of having imaged the situation shown in FIG. 9 with the camera. It is the figure which illustrated the image in a passenger car as a result of having imaged with the camera when the staying person does not exist in the situation shown in FIG.

  The elevator video monitoring apparatus according to the present invention will be described in detail below with reference to the accompanying drawings.

  FIG. 1 is a side view showing an overall schematic configuration of an elevator to which a video monitoring apparatus according to Embodiment 1 of the present invention is applied, in a moving state of a car 100. FIG. 2 is a side view showing the overall schematic configuration of the elevator to which the video monitoring apparatus according to the first embodiment of the present invention is applied, in a stopped state on a specific floor of the car 100.

  Referring to FIGS. 1 and 2, in the elevator according to the first embodiment, the car 100 is suspended by a rope 130, and the rope 130 is connected to a counterweight 140 via a sheave 150. By rotating the sheave 150, the car 100 moves up and down. The hoist 155 is controlled by the control panel 170 and rotates the sheave 150. A Fischer plate 180 is installed between the floors, and the Fischer plate 180 is fixed to the wall of the hoistway by mounting bolts 185. That is, the car 100 here moves up and down between the floors in the elevator hoistway installed in the building under the control of the control panel 170.

  In addition, a camera 120 is installed in the car 100 and images (captures) a situation of a monitoring area in a closed space formed in the car 100. A video processing device 125 is connected to the camera 120, and the video processing device 125 uses a video obtained by performing image processing on imaging data acquired by the camera 120, so that a person staying or staying in the car 100 for monitoring. Detect stagnation. The video processing device 125 is connected to the control panel 170 via a tail cord 190 that connects the car 100 and the control panel 170. Thereby, based on the video which image-processed the imaging data which imaged the monitoring area in the closed space formed in the car 100 by the video processing apparatus 125 with the camera 100, at least of the staying person and staying thing in the car 100 One stagnation can be detected. Specifically, the presence or absence of a staying person or staying object in the car 100 is detected, but it is also possible to detect an abnormal behavior such as a passenger's rampage.

  Further, the car door 110 of the car 100 is provided with a car door window 115 for seeing the outside for the purpose of crime prevention, and the hall door 160 is also provided with a hall door window 165 for the same purpose. Yes. The car door window 115 and the landing door window 165 can be used to visually check the situation in the car 100 from the landing, or a user on the car 100 can visually check the situation of the hall. It is said.

  By the way, in an elevator with such a structure, for example, depending on the installation environment (whether there is a window in the vicinity of the building landing, the installation direction of such a window, the distance and positional relationship between the window and the car door 110, the change in solar altitude due to the season, etc.) Sunlight (sunlight) 300, which is a general-purpose example of light from outside (external light), passes through the landing door window 165 of the landing door 160 and the car door of the car door 110 of the car 100 stopped on each floor as well as the hoistway. A situation may occur where the light enters the car 100 through the window 115. Such outside light may cause adverse effects on the video (image on the monitor) as illumination fluctuations for the camera 120 that captures the inside of the car 100 as will be described later.

  Therefore, in the present invention, an imaging unit that forms a closed space inside and captures imaging data by imaging a monitoring area in the car 100 as a moving room provided with a car door window 115 for seeing the outside. And a video processing device 125 as video processing means for detecting staying of at least one of a staying person and a staying thing in the car 100 based on a picture obtained by performing image processing on imaging data. In the apparatus, when at least one of the staying person and the staying object is detected based on the image by the image processing apparatus 125, the car door window 115 is moved to a position where there is no optical influence (sunlight 300) from the outside. The video processing device 125 has a function of issuing an instruction to move the car 100 to the control panel 170 as a control means for controlling the movement of the car 100. To. Thus, the control panel 170 controls the hoist 155 according to the instruction to move the car 100 to a position where there is no sunlight 300. That is, here, the video processing device 125, the control panel 170, and the hoisting machine 155 function as movement control means for the car 100.

  FIG. 3 shows an image in the car 100 that is captured by the camera 120 installed in the elevator car 100 described above and is not affected by the pre-registered sunlight 300 and has no resident persons (the same applies to the following). In this way, the image processing unit 125 performs image processing on the monitor screen and shows an image).

  Referring to FIG. 3, a pair of car doors 110A and 110B and their car door windows 115A and 115B are clearly shown on the image in an image in the car 100 that is not affected by the sunlight 300 and does not have a staying person. It shows how it can be confirmed.

  FIG. 4 is an enlarged view of a main part of the elevator when the staying person 200 exists without the sunlight 300 entering the car 100 in a stopped state on the specific floor of the car 100 shown in FIG. FIG. Referring to FIG. 4, a state in which the staying person 200 falls on the floor in the car 100 is shown here.

  FIG. 5 is a diagram exemplifying an image in the car 100 as a result of imaging the situation shown in FIG. 4 by the camera 120. Referring to FIG. 5, the state in which the staying person 200 is falling on the floor in the car 100 can be clearly confirmed on an image including the pair of car doors 110A and 110B and the car door windows 115A and 115B. It shows a state. Therefore, in the video processing device 125, the pre-registered image of the monitoring area in the empty state in the car 100 shown in FIG. 3 and the current state in which the staying person 200 shown in FIG. As a result of the comparison with the video of the monitoring area in the car 100, if there is a difference in the image of the staying person 200, it is determined that the staying person 200 exists in the car 100. Here, when the staying person 200 continues to exist in the car 100 for a certain time, the video processing device 125 determines that staying has occurred in the car 100 (abnormality has occurred), and a predetermined predetermined value is determined. (1) After the car 100 is moved to a predetermined floor, the car door 110 and the landing door 160 are opened to generate an alarm sound or an announcement. Such a video monitoring function is a general well-known technique, and even when a stagnant item such as a forgotten item is targeted instead of the dwelling person 200, the occurrence of a dwelling can be similarly determined based on the difference in images. is there.

  However, when the video processor 125 monitors the presence of the staying person 200 and staying objects in the car 100 and determines the occurrence of staying of passengers and objects based on the difference in the images, the sunlight 300 is used as the landing door window. Problems may arise if a situation occurs that enters the car 100 through 165 and the car door window 115.

  FIG. 6 illustrates an example of an image in the car 100 as a result of being captured by the camera 120 when sunlight 300 is incident and the staying person 200 is not present in a stopped state of the car 100 illustrated in FIG. FIG.

  Referring to FIG. 6, when sunlight 300 enters the car 100, the lower end of the car door windows 115 </ b> A and 115 </ b> B of the pair of car doors 110 </ b> A and 110 </ b> B is displayed in the image of the monitoring area in the car 100. The solar light 300 reaches the floor so as to be connected to the floor, and a high-luminance portion is generated, which shows that the visibility becomes unclear on the video. That is, here, as a result of the video processing device 125 comparing the pre-registered image of the car 100 shown in FIG. 3 with the current image of the sunlight 300 shown in FIG. A portion with high luminance generated by the incidence of the light 300 is detected as an image difference. Since the sunlight 300 often continues until the sun is completely blocked by the clouds or moves to a position where it is not incident on the car 100, the image processing device 125 may be stored in the car 100. In spite of the fact that no stagnant is present, there is a risk of erroneous detection in which stagnant is erroneously determined based on the difference in the image of the high-luminance portion generated by the incidence of sunlight 300.

  FIG. 7 is an enlarged view of a main part of the elevator when sunlight 300 is incident on the passenger car 100 and the staying person 200 exists when the passenger car 100 is stopped at the specific floor of the passenger car 100 shown in FIG. FIG. Referring to FIG. 7, sunlight 300 is partially incident on the staying person 200 through the landing door window 165 and the car door window 115 except that the staying person 200 falls to the floor in the car 100. It shows how it is.

  FIG. 8 is a diagram exemplifying an image in the car 100 as a result of imaging the situation shown in FIG. Referring to FIG. 8, here, the staying person 200 falls on the floor in the car 100, and the sunlight 300 passes through the car door windows 115A and 115B of the pair of car doors 110A and 110B. It is partially illuminated, and shows a state in which a portion with high brightness is generated in the local area of the staying person 200 on the video, and the sunlight 300 and the part with high brightness of the staying person 200 are unclear. In such a situation, the video processing device 125 shows the pre-registered empty image of the car 100 shown in FIG. 3 and the staying person 200 in which the sunlight 300 shown in FIG. As a result of comparing the partially illuminated image, it can be detected that there is a difference between the images of the staying person 200 and the sunlight 300, but the empty state in the car 100 in which the basic functions are registered in advance is detected. Since the presence of the staying person 200 is determined by comparing the image with the current monitoring area in the car 100, it is impossible to distinguish between the sunlight 300 and the high-luminance portion generated in the local area of the staying person 200. There is a problem.

  Therefore, in the video monitoring device according to the first embodiment, when the video processing device 125 detects the stay of the staying person 200 (or sunlight 300) in the car 100, the position without the optical influence (sunlight 300). As an instruction to move the car 100, an instruction to move the car 100 to a position where the car door window 115 is closed is issued to the control panel 170, and then an instruction to resume the imaging for monitoring to the camera 120 is issued. Issue. Specifically, the control panel 170 that has received the instruction controls the hoisting machine 155 to cover the car door window 115 so that the sunlight 300 does not enter the car 100. The car 100 is moved at a low speed. Next, as a result of comparing the empty image in the car 100 registered in advance shown in FIG. 3 with the image in the current car 100 again, if there is a difference between the images, the staying person 200 still remains. It is determined that the stagnation has occurred (the same applies to the stagnation), and if there is no difference between the images, it is determined that the stagnation is erroneously detected by the sunlight 300. If it is determined that there is a false detection, the car 100 is returned to normal operation, and if it is determined that the staying person 200 is staying, a predetermined predetermined action as described above is performed.

  9 shifts to the moving state of the car 100 shown in FIG. 1 under the control of the control panel 170 in response to the instruction of the video processing device 125 from the situation shown in FIG. It is the schematic which expanded and showed the principal part of the elevator at the time of moving to between floors covered by. Referring to FIG. 9, here, when the video processing device 125 detects the stay of the staying person 200 in the car 100, an instruction to move the car 100 to the position where the car door window 115 is closed is given to the control panel. When the control panel 170 receives the instruction, the control panel 170 controls the hoisting machine 155 to cover the car door window 115 so that the sunlight 300 does not enter the car 100. The state which moved the cage | basket | car 100 at low speed is shown.

  FIG. 10 is a diagram exemplifying an image in the car 100 as a result of imaging the situation shown in FIG. 9 by the camera 120. Referring to FIG. 10, here, the staying person 200 falls on the floor in the car 100, and the car 100 is moved at a low speed in front of the car door windows 115A and 115B of the pair of car doors 110A and 110B. As a result, the Fescher plate 180 appears to block the sunlight 300, and the mounting bolt 185 for the sunlight 300 can be confirmed, and the sunlight 300 is incident on the staying person 200 through the car door windows 115A and 115B. In addition, since a portion with high luminance is not generated in the local area of the staying person 200 on the video, the presence of the staying person 200 is clearly shown. In such a situation, the image processing device 125 compares the empty image in the car 100 registered in advance shown in FIG. 3 with the current image shown in FIG. It can be detected again that a difference has occurred.

  FIG. 11 is a diagram exemplifying an image in the car 100 as a result of imaging by the camera 120 when the staying person 200 does not exist in the situation shown in FIG. 9. Referring to FIG. 11, here, the interior of the car 100 is empty, and a pair of car doors 110A and 110B are moved forward at a low speed in front of the car door windows 115A and 115B. The rate 180 appears and the sunlight 300 is cut off, and the mounting bolt 185 corresponding to the rate 180 can be confirmed, the sunlight 300 is not incident through the car door windows 115A and 115B, and a portion with high luminance is generated on the image. In this case, the inside of the car 100 is clearly shown. In such a situation, as a result of the image processing device 125 comparing the pre-registered image in the car 100 shown in FIG. 3 with the current image shown in FIG. It can be confirmed that the difference has disappeared. As a result, the video processing device 125 resumes the imaging for monitoring by the movement of the car 100 for the detection of the stay when the high brightness portion is generated by the sunlight 300 in the image shown in FIG. As a result, since it can be determined that the detection error is caused by the sunlight 300, the car 100 can be returned to normal operation.

  According to the video monitoring apparatus according to the first embodiment described above, erroneous detection of staying in the staying person 200 or staying object when sunlight 300 enters the car 100 through the landing door window 165 and the car door window 115. It is possible to prevent the stagnant detection accuracy and to eliminate the need for a polarizing member such as a polarizing film, so that the visibility on the car 100 or the image of the imaging result is not impaired. It is possible to avoid the high cost in maintenance management and to eliminate the influence of illumination fluctuation caused by outside light.

  The video monitoring apparatus according to the second embodiment of the present invention has no optical influence (sunlight 300) when the video processing apparatus 125 detects the stay of the staying person 200 (or sunlight 300) in the car 100. As an instruction to move the car 100 to a position, an instruction to move the car 100 to a position where sunlight 300 is not incident from the outside through the car door window 115 is issued to the control panel 170, and then the camera 120 is used for monitoring. A command for resuming imaging is issued. Specifically, if the control panel 170 that has received the instruction controls the hoist 155 and a floor where the sunlight 300 is not incident is known in advance, the car 100 is moved to that floor by high-speed operation. Is.

  According to the video monitoring apparatus according to the second embodiment, compared to the case where the car 100 is moved at a low speed to the position where the car door window 115 is covered and closed by the fescher plate 180 as in the first embodiment. The control for carrying out the low-speed operation is unnecessary, and the car 100 can be moved to the floor where the sunlight 300 is not incident in the high-speed operation, so that the monitoring imaging by the camera 120 can be resumed quickly. In other respects, the same operational effects as those of the first embodiment are obtained.

  In addition, in the video monitoring apparatus described in each embodiment, a measure for preventing erroneous detection in stay detection in the car 100 due to sunlight 300 has been described. For example, a spotlight or the like installed at a landing The present invention can be similarly applied to other light sources that have strong illuminance. Moreover, although the video monitoring apparatus demonstrated in each Example demonstrated the case where it was applied to the elevator car 100 of 1 system | strain, it can be applied also to 2 or more system | strain elevators. Furthermore, although the video surveillance apparatus demonstrated in each Example demonstrated the case where it was applied to the elevator car 100, for example, when the same structure can be applied to a moving room used in a mining site or the like, for example. Can be applied to the moving room. Therefore, the video monitoring apparatus of the present invention is not limited to the form disclosed in each embodiment.

100 Car 110, 100A, 110B Car door 115, 115A, 115B Car door window 120 Camera 125 Video processing device 130 Rope 140 Balance weight 150 Sheave 155 Hoisting machine 160 Landing door 165 Landing door window 170 Control panel 180 Fesher plate 185 Mounting bolt 190 Tail code 200 Stayer 300 Sunlight

Claims (4)

An imaging unit that forms a closed space inside and images a monitoring area in a moving room provided with a window for seeing the outside to acquire imaging data, and the movement based on a video obtained by performing image processing on the imaging data In a video monitoring device comprising a video processing means for detecting staying of at least one of a staying person and stagnant in a room,
The image processing means instructs to move the moving chamber to a position where there is no optical influence from the outside on the window when at least one of the staying person and the staying object is detected based on the image. Is issued to the control means for controlling the movement of the moving room, and then a command for resuming the imaging for monitoring is issued to the imaging means, and based on the video, at least one of the staying person and the staying thing A video monitoring apparatus characterized in that when a stagnation is detected, a predetermined coping operation is performed . 2. The video monitoring apparatus according to claim 1, wherein the video processing means instructs to move the moving chamber to a position where the window is closed when at least one of the staying person and the staying object is detected. video monitoring device, characterized in that the output origination to said control means. The video monitoring device according to claim 1, wherein the video processing unit moves the moving chamber to a position where light is not incident from the outside through the window when at least one of the staying person and the staying object is detected. video monitoring system, characterized by leaving issued a command to move to the said control means.   The video monitoring apparatus according to any one of claims 1 to 3, wherein the moving room is a car that moves up and down between floors in an elevator hoistway installed in a building, and the imaging unit includes the imaging unit, An image monitoring apparatus, comprising: a camera installed in a car, wherein the control means is a control panel for controlling a driving operation of the car of an elevator.