GB2572007A - A method and user device for displaying video data, a method and apparatus for streaming video data and a video surveillance system - Google Patents
A method and user device for displaying video data, a method and apparatus for streaming video data and a video surveillance system Download PDFInfo
- Publication number
- GB2572007A GB2572007A GB1804264.8A GB201804264A GB2572007A GB 2572007 A GB2572007 A GB 2572007A GB 201804264 A GB201804264 A GB 201804264A GB 2572007 A GB2572007 A GB 2572007A
- Authority
- GB
- United Kingdom
- Prior art keywords
- video
- cropped
- region
- user device
- video feed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
- H04N7/183—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a single remote source
- H04N7/185—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a single remote source from a mobile camera, e.g. for remote control
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
- H04N7/181—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a plurality of remote sources
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/222—Studio circuitry; Studio devices; Studio equipment
- H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
- H04N5/2628—Alteration of picture size, shape, position or orientation, e.g. zooming, rotation, rolling, perspective, translation
Abstract
A method of displaying video data on a display of a user device (e.g. PC, tablet, smartphone) comprises: providing a list of selectable video feeds wherein, when a user selects one of the video feeds, video data captured by a corresponding camera is requested (e.g. from a server), received and displayed on the display; at least one video feed of the selectable video feeds is a cropped video feed, and when the user selects the cropped video feed, video data from the corresponding camera is displayed which is cropped to display only a predetermined region of interest (ROI) of the video data captured by the corresponding camera. Video data may be cropped at the user device. Region (ROI) definition data may be stored in a recording server. Cropped feeds (310b, cropped from full camera feeds 310a, Figure 3) may appear on a user interface as ‘virtual cameras’; selecting of cropped (area or region of interest) feeds allows for the immediate viewing of zoomed video, without having to first select a correct camera and then zoom to the ROI.
Description
A METHOD AND USER DEVICE FOR DISPLAYING VIDEO DATA, A METHOD AND APPARATUS FOR STREAMING VIDEO DATA AND A VIDEO SURVEILLANCE SYSTEM
Technical Field of the Invention
The present invention relates to a method and user device for displaying video data, and a method and server for streaming video data to a user device. The present invention is particularly applicable in a video surveillance system.
Background of the invention
A video surveillance management system typically receives video data from a plurality of surveillance cameras. The video surveillance management system may store the data in a recording server and carry out image processing or analytics, and transmit the video data to a user device where it is viewed on a display by an operator. The user device may be a mobile device such as a smart phone or tablet or may be an operator console. The video surveillance management system may also carry out control relating to the storage and deletion of the video data.
The video surveillance management system may also receive commands from the user, from the user device.
- 1 The commands may include commands to the video management system which control which data is sent to the client device for display. For example, the operator can control which camera's data is sent from the video management system to the display so that the operator can select which camera to view data from.
The operator's display may display only data from one video camera at any one time. Alternatively, video data from multiple cameras can be displayed simultaneously in multiple windows of an interface, and video from a selected camera may be displayed in a larger window than the other cameras. Accordingly, the user device can receive one stream of video data or multiple streams.
Software on the user device will present the user with an interface on the display including a list of cameras from which the user can select to view video data. The user can view video data from the selected camera or cameras, either as a live feed or as recorded data. The user can select one video feed to view or multiple video feeds which can be presented on the display in multiple windows .
A user may be interested in one particular area of a video feed. For example, if monitoring a shop, the user might want to zoom in on the part of the image that shows the cash register. Or if monitoring a casino, the user
- 2 might want to zoom in on the part of the image that shows a card table or the area where a player has placed their cards on the table. This can be achieved by selecting a camera and using a zoom function to zoom in on the region of interest.
Video surveillance is often carried out in real time, with an operator monitoring events as they happen. This is particularly the case in some highly sensitive video surveillance systems such as airport security or casino monitoring. In this case, an operator might wish to quickly switch to viewing a zoomed in view of a region of interest from a particular camera. In current systems, in such a situation the operator must switch to viewing data from the camera and then zoom in to the region of interest.
Summary of the Invention
According to a first aspect of the present invention there is provided a method of displaying video data on a display of a user device according to claim 1.
Thus, the cropped video feed appears in a user interface of the display in the same way as a camera ie as a virtual camera. The user can select the cropped feed in the same way as selecting a particular camera and immediately view video which is zoomed in to a
- 3 predetermined region of interest, without having to first select the correct camera and then zoom in to the region of interest. A user can set multiple such virtual cameras in the interface so that they can easily switch between different views.
According to a second aspect of the present invention there is provided a method of streaming video data to a user device according to claim 5.
According to the invention, the request for the cropped video feed can be received, for example at a recording server, which then crops the video feed to include only the predetermined region of interest and sends the cropped video feed to the user device. This reduces the amount of data that is streamed to the user device.
Another aspect of the invention relates to a computer program which, when executed by a programmable apparatus, causes the apparatus to perform the methods defined above.
Another aspect of the invention relates to a user device according to claim 10.
Another aspect of the invention relates to a server for streaming video data to a user device according to claim 15.
Another aspect of the invention relates to a video surveillance system comprising the server and the user device .
At least parts of the methods according to the invention may be computer implemented. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment (including firmware, resident software, micro-code, etc.) or an embodiment combining software and hardware aspects that may all generally be referred to herein as a circuit, module or system. Furthermore, the present invention may take the form of a computer program product embodied in any tangible medium of expression having computer usable program code embodied in the medium.
Since the present invention can be implemented in software, the present invention can be embodied as computer readable code for provision to a programmable apparatus on any suitable carrier medium. A tangible carrier medium may comprise a storage medium such as a hard disk drive, a magnetic tape device or a solid state memory device and the like. A transient carrier medium may include a signal such as an electrical signal, an electronic signal, an optical signal, an acoustic signal, a magnetic signal or an electromagnetic signal, e.g. a microwave or RF signal.
- 5 Brief description of the drawings
Embodiments of the present invention will now be described, by way of example only, with reference to the accompanying drawings in which:
Figure 1 illustrates a video surveillance system;
Figure 2A is a view of a display of a user device in the form of a mobile device;
Figure 2B is a view of a display of a user device in the form of a console;
Figure 3 is a view of an interface for selecting video feeds;
| Figure | 4 | is a | flowchart | illustrating a | method | of |
| displaying | video | data on a | display of a user | device; | and | |
| Figure | 5 | is a | flowchart | illustrating a | method | of |
streaming video data to a user device.
Detailed Description of the Invention
Figure 1 shows an example of a video surveillance system
100 in which embodiments of the invention can be implemented. The system 100 comprises a management server 130 and a recording server 150. Further servers may also be included, such as further recording servers, archive servers or analytics servers. A plurality of video surveillance cameras 110a, 110b, 110c send video data to the recording server 150. A user device 120 provides an interface via which an operator can view video data live from the cameras 110a, 110b, 110c, or recorded video data from the recording server 150.
The cameras 110a, 110b, 110c capture image data and send this to the recording server 150 as a plurality of video data streams.
The recording server 150 stores the video data streams captured by the video cameras 110a, 110b, 110c.
The management server 130 includes management software for managing information regarding the configuration of the surveillance/monitoring system 100 such as conditions for alarms, details of attached peripheral devices (hardware), which data streams are recorded in which recording server, etc.. The management server 130 also manages user information such as operator permissions. When a user device 120 is connected to the system, or a user logs in, the management server 130 determines if the user is authorised to view video data.
The management server 130 also initiates an initialisation or set-up procedure during which the management server 130 sends configuration data to the user device 120. The configuration data defines the cameras in the system, and which recording server (if there are multiple recording servers) each camera is connected to. The user device 120 then stores the configuration data locally in a cache. The configuration data comprises the information necessary for the user device 120 to identify cameras and obtain data from cameras and/or recording servers. The management server 130 also communicates with the user device 120 if a change is made that requires the user device 120 to update its configuration data. For example, if a recording server is added or removed from the system.
Similarly, configuration data is sent from the management server 130 to the recording server 150 during an initialisation or set-up procedure. If any changes are made to any settings at the management server 130 which are relevant to a particular recording server 150, the management server communicates these changes to the particular recording server 150 so that the recording server 150 can update its configuration data accordingly.
Thus, the management server maintains a master copy of configuration data for user devices and recording servers and will send data to the user devices and recording servers to update their configuration data as and when any relevant change is made at the management server 13 0.
- 8 The user device 120 is provided for use by a security guard or other user in order to monitor or review the outputs of the cameras 110a, 110b, 110c. The user device 120 may be a fixed console or could be a mobile device connected to the video management system via a network. The user device 120 includes a display which can display an interface for interacting with the management software on the management server 130. The user device 120 can request video data streams from one or more of the cameras 110a, 110b, 110c to view video in real time, or the user device 120 can request recorded video data stored in the recording server 150.
Other servers may also be present in the system 100. For example, an archiving server (not illustrated) may be provided for archiving older data stored in the recording server 150 which does not need to be immediately accessible from the recording server 150, but which it is not desired to be deleted permanently. A fail-over recording server (not illustrated) may be provided in case a main recording server fails. Also, a mobile server (not illustrated) may be provided to allow access to the surveillance/monitoring system from mobile devices, such as a mobile phone hosting a mobile client or a laptop accessing the system from a browser using a web client. An analytics server can also run analytics software for image analysis, for example motion or object detection, facial recognition, event detection.
The user device 120 is configured to communicate via a first network/bus 121 with the management server 130 and the recording server 150 and the cameras 110a, 110b, 110c. The recording server 150 communicates with the cameras 110a, 110b, 110c via a second network/bus 122.
Figure 2A shows a user device 120 having a display 200 which displays recorded or live video data streamed from the recording server 150. In this case, the user device 120 is a mobile device such as a smartphone or tablet and the display 200 is a touch screen display. However, the user device 120 may be a fixed console with a display 200, such as a PC, and the user may input instructions using a keypad or mouse. Figure 2B shows an example of a display 200 on a fixed console.
In the example of Figure 2A, a user can select, on the display 200, a rectangular region of interest 210 of a video image via a pinch gesture. On an alternative type of user device such as a fixed console as shown in Figure 2B, a user could select the region of interest 210 using a mouse. The region of interest need not be rectangular, it could be circular, ellipsoid or even of freeform geometry.
When a user defines a region of interest 210 of a video feed, this is saved and presented to a user as a selectable video feed in an interface which is presented to a user to select which video feed or which plurality of video feeds to view on the display of the user device 120 .
Figure 3 shows such a user interface which displays a list of a plurality of selectable video feeds to a user. Video feed 310a might be the video feed from camera 110a. Another of the selectable video feeds might be a cropped video feed 310b which corresponds to a region of interest 210 of camera 110b which has been selected and stored by a user. When the user selects the cropped video feed 310b, video is displayed on the display from camera 110b which is cropped to display only the preselected region of interest 210.
Thus, according to the present invention, cropped video feeds are presented to the user as virtual devices which can be selected in the same way as cameras.
There are several different embodiments of the invention which can achieve the result shown in Figures 2 and 3.
Figure 4 is a flow chart illustrating a first embodiment of a method carried out by the user device 120. In this embodiment, in step S400 a user selects a cropped video feed 310b from the list in the user interface. The user device 120 has data defining the cropped video feed stored thereon that associates the selected cropped video feed with a particular camera, and also defines a
- 11 region of interest 210 (region definition data). In step S410, the user device retrieves the cropped feed definition data and determines which camera the cropped video feed corresponds to. In step S420, the user device requests the video data for the determined camera from the recording server 150. In step S430, the user device 120 receives the video feed from the determined camera. In step S440 the user device 120 crops the received video feed in accordance with the region definition data and in step S450, displays the cropped video feed to the user. On the display 200, the user sees only the region of interest 210 of the video feed.
Accordingly, in the first embodiment, the data defining the cropped video feed is stored at the user device 120 and an entire video feed from the associated camera is requested from the recording server 150 and received at the user device 120. The user device 120 then carries out cropping to display only the region of interest 210 to the user. The region of interest 210 is determined by region definition data which is part of the data defining the cropped video feed, which is stored at the user device 120.
In the first embodiment, the data defining the cropped video feed could be stored only at the user device 120. However, it could additionally be stored on the management server 130 and uploaded to
- 12 the user device
120 as part of the configuration data. The benefit of this would be that cropped video feeds defined by one user device could also be made available to other user devices. The management server could update user devices in the system with data defining new cropped video feeds whenever a new cropped video feed is defined by one user device .
In a second embodiment of the invention, the cropping of the video data takes place at the recording server 150 before the video data is streamed to the user device 120. This has the advantage of reducing the amount of data which is streamed to the user device 120, although it requires additional processing of the data for streaming.
In the second embodiment, it is possible for the data defining the cropped video feed to be stored only at the user device 120. In this case, the data defining the cropped video feed is sent to the recording server 150 with the request for the cropped video feed. The recording server 150 then selects the correct camera feed and crops it in accordance with the region definition data and sends the cropped feed to the user device 120.
Alternatively, the data defining the cropped video feed could be stored at the management server 130 and uploaded
- 13 to the user device 130 as part of the configuration data. In this case, the data defining the cropped video feed may be sent to the recording server 150 from the user device 120 with the request for the cropped video feed. The recording server 150 then selects the correct camera feed and crops it in accordance with the region definition data and sends the cropped feed to the user device 120.
Alternatively, the data defining the cropped video feed could additionally be stored at the recording server 150. In this case, the data defining cropped video feeds may form part of configuration data which is stored at the management server 130, and then communicated to the recording server 150 whenever there is a change relevant to that recording server. The locally stored data is then accessed by the recording server 150 when a request for a cropped video feed is received. The recording server 150 then selects the correct camera feed and crops it in accordance with the region definition data and sends the cropped feed to the user device 120.
One advantage of this is that cropped video feeds defined by one user can be shared by other user devices in the system. Configuration data can be communicated to the other user devices by the management server 130 indicating a new cropped video feed has been defined and is available for selection so that other user devices can display the cropped video feed in their user interface for selection. If the cropped video feed is selected, then the data defining the cropped video feed is available centrally and the recording server can fulfil a request from any user device for the cropped video feed.
Figure 5 is a flow chart of a method of streaming video data from a recording server 150 to a user device 120 in a video surveillance system, in which the cropping of the video data takes place at the recording server 150 before the video data is streamed to the user device 120 .
The recording server 150 is receiving a plurality of video feeds from a plurality of cameras 110a, 110b, 110c.
At step S500, the recording server 150 receives a request for a video feed from a user device 120. At step S510, the recording server 150 determines, from the request, if the requested video feed is a cropped video feed.
If the requested video feed is not a cropped video feed, in step S520, the recording server 150 determines which camera the requested video feed relates to, and streams the video feed corresponding to that camera to the user device 12 0.
If the requested video feed is a cropped video feed, at step S530, the recording server retrieves data defining the cropped video feed, which includes camera data indicating which camera corresponds to the cropped video feed and includes region definition data that defines a region of interest 210. As discussed above, this data could be stored locally at the recording server 150, or it could be received with the request from the video feed from the user device 120.
In step S540, the recording server 150 crops the video data from the associated camera to include only the region of interest 210 as defined in the region definition data, and in step S550, the recording server 150 streams the cropped video data to the user device 120 .
While the present invention has been described with reference to embodiments, it is to be understood that the invention is not limited to the disclosed embodiments. The present invention can be implemented in various forms without departing from the principal features of the present invention as defined by the claims .
Claims (19)
1. A method of displaying video data on a display of a user device, the method comprising:
providing a list of selectable video feeds wherein, when a user selects one of the video feeds, video data captured by a corresponding camera is requested from a server, received and displayed on the display;
wherein at least one video feed of the selectable video feeds is a cropped video feed, wherein when the user selects the cropped video feed, video data from the corresponding camera is displayed which is cropped to display only a predetermined region of interest of the video data captured by the corresponding camera.
2. A method according to claim 1, further comprising:
setting a new selectable video feed which is a cropped video feed by displaying video data captured by a selected camera, selecting a region of interest of the video data and storing the region such that when the user selects the new selectable video feed, video data captured by the selected camera is displayed which is cropped to display only the selected region of interest of the video data.
3. A method according to claim 1 or 2, wherein, when a cropped video feed is selected for display, the video data captured by the corresponding camera is received by the user device, cropped at the user device and displayed.
4. A method according to claim 1 or 2, wherein, when a cropped video feed is selected for display, cropped video data from the corresponding camera which has been cropped to include only the predetermined region of interest is received by the user device and displayed.
5. A method of streaming video data to a user device, the method comprising:
receiving a plurality of video feeds from a plurality of cameras;
receiving a request for a video feed corresponding to one of the cameras from a user device;
determining if the requested video feed is to be cropped to include only a predetermined region of interest;
if the requested video feeds is to be cropped, determining the region of the video feed that is to be sent, cropping the video feed to include only the region of interest and sending the cropped video feed to the user device.
6. A method according to claim 5, wherein region definition data defining the region of interest is included in the request received from the user device.
7. A method according to claim 5, including a step of acquiring region definition data defining the region of interest from a storage means.
8. A method according to claim 7, wherein the method is carried out by a recording server, and the region definition data is stored in the recording server.
9. A method according to claim 7 or 8, wherein the method is carried out by a recording server, and the region definition data is stored in a management server.
10. A user device for displaying video surveillance data comprising:
a user interface including a list of selectable video feeds;
requesting means configured to send a request video data captured by a corresponding camera to a server when a user selects one of the video feeds;
receiving means configured to receive the requested video feed from the server;
display means configured to display the user interface and the received video feed;
wherein at least one video feed of the selectable video feeds is a cropped video feed, wherein when the user selects the cropped video feed, the displayed video data is cropped to display only a predetermined region
of interest
corresponding
of the video c
camera .
lata
captured
by the
11. A user
device
according
to
claim 10,
further
comprising:
selection means
configured
to
enable the
user to
select a region of interest of video data captured by a selected camera whilst displaying video data captured by the selected camera;
setting means configured to set a new selectable video feed which is a cropped video feed based on the user's selected region of interest;
wherein the new selectable video feed appears in the user interface such that when the user selects the new selectable video feed, video data captured by the selected camera is displayed which is cropped to display only the selected region of interest of the video data.
12. A user device according to claim 10 or 11, further comprising:
storage means having region definition data defining the region of interest for each cropped video feed stored therein.
13. A user device according to any one of claims 10 to 12, further comprising:
cropping means configured to, when a cropped video feed is selected for display, crop the received video data based on the region definition data.
14. A user device according to any one of claims 10 to 12, wherein the requesting means is configured to send the region definition data to the server when a cropped video feed is requested.
15. A server for streaming video data to a user device, comprising:
means for receiving a plurality of video feeds from a plurality of cameras;
means for receiving a request for a video feed corresponding to one of the cameras from a user device;
means for determining if the requested video feed is to be cropped to include only a predetermined region of interest and to determine the predetermined region of the video feed that is to be sent;
means for cropping the video feed if the requested video feed is to be cropped, to include only the region of interest; and means for sending the cropped video feed to the user device.
16. A server according to claim 15, wherein region definition data defining the region of interest is included in the request received from the user device.
17. A server according to claim 15, further comprising storage means having region definition data stored therein, wherein the region definition data defines the region of interest for each requested cropped video feed.
18. A computer program which, when executed by a programmable apparatus, causes the apparatus to perform the method of any one of Claims 1 to 9.
19. A video surveillance system comprising:
a recording server according to any one of claims 15 to 18; and a user device according to any one of claims 10 to 14 .
Intellectual Property Office
Application No: GB1804264.8
Claims searched: 1-19
Examiner: Matthew Males
Date of search: 15 August 2018
Patents Act 1977: Search Report under Section 17
Documents considered to be relevant:
Category
Relevant to claims
Identity of document and passage or figure of particular relevance
X
1-19
WO 2015/192056 Al
URTHECAST CORP - See Abstract; page 11, lines 20-26; pages 13-19; page 24, lines 10-14 and page 26, line 14-page 29, line 23; and Figs 6-20, for example.
X
1-19
WO 2016/205228 Al
GOOGLE INC - See Abstract and claim 1, for example.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1804264.8A GB2572007A (en) | 2018-03-16 | 2018-03-16 | A method and user device for displaying video data, a method and apparatus for streaming video data and a video surveillance system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1804264.8A GB2572007A (en) | 2018-03-16 | 2018-03-16 | A method and user device for displaying video data, a method and apparatus for streaming video data and a video surveillance system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB201804264D0 GB201804264D0 (en) | 2018-05-02 |
| GB2572007A true GB2572007A (en) | 2019-09-18 |
Family
ID=62017712
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1804264.8A Withdrawn GB2572007A (en) | 2018-03-16 | 2018-03-16 | A method and user device for displaying video data, a method and apparatus for streaming video data and a video surveillance system |
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| Country | Link |
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| GB (1) | GB2572007A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11809675B2 (en) | 2022-03-18 | 2023-11-07 | Carrier Corporation | User interface navigation method for event-related video |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015192056A1 (en) * | 2014-06-13 | 2015-12-17 | Urthecast Corp. | Systems and methods for processing and providing terrestrial and/or space-based earth observation video |
| WO2016205228A1 (en) * | 2015-06-14 | 2016-12-22 | Google Inc. | Methods and systems for presenting multiple live video feeds in a user interface |
-
2018
- 2018-03-16 GB GB1804264.8A patent/GB2572007A/en not_active Withdrawn
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015192056A1 (en) * | 2014-06-13 | 2015-12-17 | Urthecast Corp. | Systems and methods for processing and providing terrestrial and/or space-based earth observation video |
| WO2016205228A1 (en) * | 2015-06-14 | 2016-12-22 | Google Inc. | Methods and systems for presenting multiple live video feeds in a user interface |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11809675B2 (en) | 2022-03-18 | 2023-11-07 | Carrier Corporation | User interface navigation method for event-related video |
Also Published As
| Publication number | Publication date |
|---|---|
| GB201804264D0 (en) | 2018-05-02 |
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