EP2868098A1

EP2868098A1 - Display apparatus for a video monitoring system, and video monitoring system having the display apparatus

Info

Publication number: EP2868098A1
Application number: EP13727092.2A
Authority: EP
Inventors: Stephan Heigl; Jan Rexilius; Julia Ebling; Daniel Gottschlag
Original assignee: Robert Bosch GmbH
Current assignee: Robert Bosch GmbH
Priority date: 2012-06-29
Filing date: 2013-05-28
Publication date: 2015-05-06
Also published as: DE102012211298A1; WO2014001009A1

Abstract

Video monitoring in the public domain or in companies is widely used today. For this, a large number of cameras are typically used, particularly when monitoring extensive areas, such as at airports. A display apparatus (1) for a video monitoring system (2), wherein the video monitoring system (2) is designed to monitor a monitoring area with a plurality of monitoring cameras (3, 3a, b, c, d), is proposed, comprising a model module (7), wherein the model module (7) provides a model (8) of the monitoring area with the monitoring cameras (3, 3a, b, c, d), a display module (19) and a display device (4), wherein the display module (19) is designed to display the model (8) on the display device (4), a processing module (16), wherein the processing module (16) is designed to select at least one monitoring camera (3, 3a, b, c, d) as a selected monitoring camera (3a, b) that is oriented or can be oriented onto a selected location (15), and having a selection module (5), wherein the selection module (5) is designed to interactively select a freely selectable location in the display model (8) as the selected location (15).

Description

description

title

Display device for a video surveillance system as well

Video surveillance system with the display device

State of the art

The invention relates to a display device for a video surveillance system, wherein the video surveillance system for monitoring a

Monitoring area is formed with a plurality of surveillance cameras, wherein the display device is a model module, wherein the model module is a model of the surveillance area with the

Security cameras provides, a display module and a

A display device, wherein the display module is configured to display the model on the display device and comprises a processing module, wherein the processing module is configured to select at least one monitoring camera as a selected surveillance camera, which is aligned or alignable to a selected location. The invention also relates to a video surveillance system with the display device.

Video surveillance in public places or in companies is widespread today. In particular, when monitoring large areas, such as at airports, typically a large number of cameras are used. The video data of the cameras are often combined in a monitoring center and automated there or checked or evaluated by monitoring personnel. The video surveillance with personal-assisted evaluation set more and more on one

Overview map of the entire area to be monitored, in which the area is modeled. For example, the document DE 10 2007 048 857 A1 discloses

A video surveillance system that uses a model and real-world images to provide a virtual representation of the surveillance area with realistic textures to provide a simple monitoring tool

To enable orientation in the virtual representation.

Disclosure of the invention

In the context of the invention, a display device with the features of claim 1 and a video surveillance system with the features of claim 10 is shown. Preferred or advantageous embodiments of the invention will become apparent from the dependent claims, the following

Description and the attached figures.

The subject of the invention is a display device which is suitable and / or designed for a video surveillance system.

The video surveillance system is for monitoring a

Monitoring range formed and includes a plurality of

Surveillance cameras. The surveillance area may be considered a public space, a building, a factory hall, a school, a university, a

Be formed plurality of contiguous spaces or areas, etc. The surveillance area may be considered a contiguous

Surveillance area or be fragmented or fragmented.

The video surveillance system includes a plurality of

Surveillance cameras, which are arranged distributed in the surveillance area. The surveillance cameras can be stationary surveillance cameras, which are optionally arranged rigidly or designed as movable surveillance cameras, for example so-called PTZ cameras (pan-tilt-zoom). It is also possible that the surveillance cameras or a part thereof are mobile, so that they can automatically change their position in the surveillance area. The stationary, movable and / or mobile surveillance cameras - collectively also referred to as active surveillance cameras - can align their field of vision within their degrees of freedom. It is preferred that the Video surveillance system has at least five, preferably at least ten and in particular at least 30 surveillance cameras.

The display device includes a model module, the model module providing a model of the surveillance area with the surveillance cameras. In particular, the surveillance cameras in the model are shown as virtual surveillance cameras. It is possible that the

Monitoring area and the surveillance cameras are integrated in a common, contiguous model or that the surveillance area and the surveillance cameras are shown in two sub-models, which together form the model.

The model of the surveillance area particularly preferably comprises floors, walls, windows, door openings and optionally additionally fixed objects, such as e.g. Furniture, manufacturing equipment, fixtures etc. The model of

Surveillance cameras particularly preferably include the position, orientation and magnification or viewing angle of the surveillance cameras. For example, the model may have a position, an orientation, an up-direction and a viewing angle for each surveillance camera. if the

Surveillance camera as an active camera with degrees of freedom, e.g.

is formed with respect to the swivel angle, inclination angle, zoom factor or the viewing angle and / or the position, can be deposited for the said parameters areas that define the degrees of freedom. The model module can also be designed as an interface, which is the

Load model from an external data source and in this way the

Display device provides.

The display device further comprises a display module and a

Display device, wherein the display module is formed, the model on the

Display device. The display device can be designed as one or more monitors. The display module adopts the provided model and forwards it to the display device for display. The display device includes a processing module that selects at least one of the surveillance cameras as a selected surveillance camera, wherein the selected surveillance camera is aligned or alignable with a selected location in the surveillance area.

In the context of the invention, it is proposed that the display device has a selection module which enables a user to interactively select a freely selectable location in the displayed model as the selected location or as a representative thereof. For interactive selection, the user preferably uses a human-machine interface, e.g. a computer mouse, a touch screen, a touchpad or the like. For example, the user may click on the location in the model displayed on the display device.

The arbitrary location is any location in the model, in particular, any location in the model may be randomly accessed. this means

in particular, that the selected location is not selected from a predetermined list, but any position in the model can be selected. In one possible embodiment of the invention, the spatial

Resolution, ie the minimum distance between two possible selectable locations, less than 1 m, vorzugsweiter smaller than 50 cm and in particular less than 20 cm. Thus, two selectable locations that are spaced greater than the stated resolution are treated as two different locations by the display device so that they may lead to a different selection of surveillance cameras.

In a preferred embodiment of the invention, the display module is designed to display monitoring images of the selected surveillance camera (s) on the display device. On the display device, current monitoring images are preferably displayed which represent the selected location in possibly several views, which are selected from a plurality of

Surveillance cameras come, show. This embodiment simplifies the task of the user, in particular of the monitoring personnel, since this can select the desired location in a first step and then

automatically monitor images of at least one, some or all of the selected surveillance cameras to the chosen location on the

Display device gets shown.

It is a consideration of the invention that by the display device, the automatic determination of a suitable monitoring image after selecting a location in the model is made possible in a manner simple for the user. In this case, a direct assignment and visualization of the selected location in the model is made possible for the selected surveillance camera. In particular, the advantage of the invention lies in the direct interaction of the user with the model of the surveillance area. The user selects a location in the model and associates the selected location with one or more surveillance cameras. The invention thus simplifies the operation of the display device of a video surveillance system and makes it more intuitive, so that monitoring of the monitoring area by the display device is also improved.

In a preferred embodiment of the invention, the arbitrary location is any position, e.g. a 3D coordinate or a 2D coordinate in the model. In developments of the invention, it is also possible that the

User selects an area or even a volume as a freely selectable location. In this case, those surveillance cameras will be selected

Surveillance cameras are selected, which are aligned on the surface or the volume and / or preferably have the surface or the volume completely in their field of view.

In possible embodiments of the invention, the model is designed as a 3D model so that interference contours that obscure the camera views can be automatically taken into account. In the illustration, it is possible for the model to be displayed on the display as a 3D model, as a virtual reality, or as a 2D projection such as a 3D projection. a floor plan is shown. Such models are available in many variants; For example, the Microsoft WPF offers the processing of a model with virtual cameras.

In a possible concretization of the invention that includes

Processing module, a selection unit, which at least one

Security camera as the selected security camera selects their current field of view taking into account interference contours of the

Surveillance area or model to the selected location

is aligned and covered with this, so that the

Security camera can detect the desired location. Since the fields of view of the surveillance cameras may overlap, it is possible for multiple surveillance cameras to be defined as the selected surveillance cameras.

In a further development or an alternative of the invention, the surveillance cameras are selected as selected by one or the selection unit

Surveillance cameras defined in the alignable fields of view - again taking into account interference contours - the selected location is located. In particular, if the surveillance cameras are designed as active, in particular movable and / or mobile surveillance cameras, it is also possible to select the surveillance cameras which have the selected location in the field of vision only after a change of position and / or orientation. Thus, for example, it is possible for a PTZ (pan-tilt-zoom) camera to initially have a field of view which does not see the selected location, but is movable so that the selected location lies in the field of view after the movement. In the same way, it is possible that a mobile surveillance camera, which is set up, for example, on a robot, initially can not detect the selected location, but after a position change can bring the selected location in the field of view.

To implement the alignment of the surveillance cameras, it is preferred that the display device has an alignment unit which is designed to align the alignable field of view of the selected surveillance camera on the selected location. The alignment unit thus passes commands to the alignable surveillance camera so that it positions its field of view to capture the selected location.

In a possible development of the invention, the display device comprises a control unit, wherein the control unit is formed from a plurality of selected surveillance cameras a preferred

to select a selected surveillance camera based on a set of rules. Is determined by the processing device that several

Surveillance cameras come as selected surveillance cameras in question, so it is on the one hand possible that the current monitoring image is displayed on the display device of each of the selected surveillance cameras and - for example - the user can select a desired monitoring image by another interaction. However, it is also possible for the rule unit to select the most suitable camera for the user as the preferred selected surveillance camera.

For example, the rule unit may use one, some, or all of the following rules:

- Only select the N surveillance cameras that are closest to the selected location;

- Use the PTZ camera that can be aligned the fastest to the selected location;

- Choose the surveillance camera that can deliver the highest resolution image of the selected location.

Another object of the invention relates to a video surveillance system, wherein the video surveillance system for monitoring the

Monitoring area is formed with a plurality of surveillance cameras, characterized by a display device according to one of the preceding claims.

Further features, advantages and effects of the invention will become apparent from the following description of a preferred embodiment of the invention and the accompanying figures. Showing:

Figure 1 is a schematic block diagram of a display device as an embodiment of the invention;

Figure 2 is a schematic plan view of a model of a

Monitoring area for explaining the display device in the figure 1. 1 shows a schematic block diagram of a display device 1 as an embodiment of the invention. The

Display device 1 is coupled to a monitoring system 2 or forms part of the monitoring system 2. The monitoring system 2 comprises a plurality of surveillance cameras 3, which in one

Monitoring area 9, e.g. in a building or the like, are spatially distributed. The surveillance cameras 3 may be fixed surveillance cameras, movable surveillance cameras, such as security cameras. PTZ cameras, or mobile surveillance cameras that can independently change their position in the surveillance area. Optionally, the mobile surveillance cameras also have PTZ functionality.

The display device 1 comprises a display device 4, on which a model 8 of the monitoring area 9 or monitoring images can be displayed. A selection module 5 makes it possible to operate the display device 1 interactively. For example, the selection module 5 comprises a mouse 6, which allows a graphically assisted operation of the display device 1 on the display device 4.

The display device 1 comprises a model module 7, in which the model 8 of the monitoring area is stored. For an explanation of the model 8, reference is made to FIG.

FIG. 2 shows a schematic plan view of the floor plan of FIG

Monitoring area 9 with the surveillance cameras 3. The model 8, which is stored in the model module 2 is formed as a 3D model, the figure 2 shows only a 2D projection. The 3D model includes all interfering contours of the surveillance area, such as Walls 10, floors 1 1 as well as passages, such. Passages 12. In the Model 8 are the

Surveillance cameras 3 registered as virtual cameras in their current position and parameters, so that each camera 3 a field of view 13 can be assigned.

In operation, a user 14 (FIG. 1) interactively selects a location as a selected location 15 in the surveillance area 9 with the selection module 5, in particular with the mouse 6. The selected location 15 can - as in the 2 - may be defined as a point, but it may also be a surface which is spanned in the projection shown as a quadrangle or even act on a volume. It should be emphasized that the position of the place 15 is freely selectable, so that any position in the

Monitored area as the selected location 15 can be defined.

As shown in FIG. 1, the selection module 5 transfers the information about the selected location 15 to a processing module 16, in particular to a selection unit 17 in the processing module 16.

The selection unit 17 checks which of the surveillance cameras 3 so

is aligned or can be oriented so that the selected location 15 is detected by the surveillance camera 3. It is checked, for example, whether a connecting line V between the surveillance camera 3 and the

selected location 15 is in the field of view 13 of the surveillance camera 3 and is not interrupted by a disturbing contour.

Looking at the situation in Figure 2, so are the

Surveillance cameras 3 a, b selected, but the surveillance cameras 3 c, d do not meet this condition, since the walls 10 form a concealment of the selected location 15.

As indicated in FIG. 2, the surveillance camera 3d is designed as a so-called PTZ camera whose field of view 13 can be aligned.

Optionally, not only surveillance cameras 3a are selected by the selection unit 17, which cover in the current state with its field of view 13 the selected location 15, but also surveillance cameras 3b, which are aligned so that their field of view 13 covers the selected location 15.

If the selection unit 17 has determined that one of the

Surveillance cameras, in this case, the surveillance camera 3b, can be aligned so that their field of view 13 covers the selected location 15, an alignment unit 18 is activated in the processing module 16, which

Monitoring system 2 controls so that the surveillance camera 3b so is aligned, that the selected location 15 is monitored by the monitoring camera 3b.

The ones selected by the selection unit 17 are selected

Surveillance cameras 3 a, b are transferred to a display module 19, which controls the display on the display device 4. The display module 19 selects the monitoring images 20 a, b of the monitoring system 2 originating from the selected surveillance cameras 3a, b and outputs them to the display device 4, so that the user 14 can see them.

For example, the surveillance images 20 a, b on the

Display device 4 are arranged next to the model 8.

The display device 1 is used, for example, in the monitoring of large areas as monitoring areas, such as e.g. one

Airport terminal or a train station, advantageous because with appropriate monitoring systems often a large amount of partially overlapping surveillance cameras 3 are used. When a security-related event occurs (e.g., an unauthorized person in an area), the user can quickly and easily obtain a surveillance image 20a, b from that area by means of the display device 1. This can e.g. be done by a single mouse click on a specific position in the model 8 on the display device 4, whereupon automatically selected at least one suitable surveillance camera 3 a, b and this is optionally rotated or zoomed to the correct position.

Even in the event that no alarm has occurred, the display device 1 can lead to a simplification of the user interaction. If, for example, a user 14 wants to view a certain area of the monitored area monitored by him without an alarm, suitable ones can also be used here

Surveillance cameras 3 a, b switched by a simple mouse click and activated in the display device 4.

Optionally, additionally, the processing module 16 has a rule unit 21 which, on the basis of a set of rules from a plurality of selected surveillance cameras 3 a, b, defines a particularly suitable surveillance camera as the preferred selected surveillance camera. This rule can be customized within the application and may contain rules, such as

Select the surveillance camera 3 which is closest to the

selected location is 15;

Select the surveillance camera 3 showing the selected location 15 in the largest resolution;

Select the surveillance camera 3 already aligned with the selected location 15.

Select the surveillance camera (3) in whose field of view the

selected location (15) uncovered and / or streakless.

Claims

claims

1 . Display device (1) for a video surveillance system (2), wherein the video surveillance system (2) for monitoring a

Monitoring area with a plurality of surveillance cameras (3, 3 a, b, c, d) is formed, comprising a model module (7), wherein the model module (7) a model (8) of the

Monitoring area with the surveillance cameras (3, 3 a, b, c, d) provides, a display module (19) and a display device (4), wherein the

Display module (19) is formed, the model (8) on the

Display device (4), a processing module (16), wherein the processing module (16) is adapted to select at least one monitoring camera (3, 3 a, b, c, d) as a selected surveillance camera (3 a, b), which a selected location (15) is aligned or alignable, characterized by a selection module (5), wherein the selection module (5) is adapted to interactively select a freely selectable location in the displayed model (8) as the selected location (15).

2. Display device (1) according to claim 1, characterized in that the display module (19) displays current surveillance images (20 a, b) of the selected surveillance camera (3a, b) on the display device (4). Display device (1) according to claim 1 or 2, characterized in that the freely selectable location (15) is an arbitrary position, area or volume.

Display device (1) according to one of the preceding claims, characterized in that the model (8) is designed as a 2D or as a 3D model.

Display device (1) according to one of the preceding claims, characterized in that the processing module (16) has a selection unit (17), which the at least one surveillance camera (3, 3 a, b, c, d) as the selected surveillance camera (3 a ), in whose current field of view (13) the selected location (15) is arranged.

Display device (1) according to one of the preceding claims, characterized in that the processing module (16) one or the

Selection unit (17), which at least one

Surveillance camera (3, 3 a, b, c, d) as the selected

Surveillance camera (3b) is selected, in the alignable field of view (13) of the selected location (15) is arranged.

Display device (1) according to claim 6, characterized by a

Alignment unit (18), which is designed to align the alignable field of view (13) of the selected surveillance camera (3b) on the selected location (15).

Display device (1) according to one of the preceding claims, characterized by a control unit (18) which is formed from a plurality of selected surveillance cameras (3 a, b) to determine a preferred selected surveillance camera based on a set of rules.

Display device (1) according to claim 8, characterized in that the set of rules comprises one, some or all of the following rules: Select the surveillance camera (3) which is closest to the selected location (15);

Select the surveillance camera (3) showing the selected location (15) in the largest resolution;

Select the surveillance camera (3) that is already aligned with the selected location (15);

Select the surveillance camera (3) in whose field of view the

selected location (15) uncovered and / or streakless.

Video surveillance system (2) with a display device (1) according to one of the preceding claims.