Abstract: The present disclosure relates to a method performed by a monitoring camera (100) for handling a first and a second video stream (201a, 201b). The monitoring camera (100) obtains a first video stream (201a) from a first image sensor (103a) and a second video stream (201b) from a second image sensor (103b). A field of view of the first video stream (201a) partly overlaps with the second video stream (201b). The monitoring camera (100) identifies a moving object (205) in the overlap area (203). The monitoring camera (100) divides the moving object (205) into a plurality of sub objects (210). The monitoring camera (100) performs a hard handover of the sub objects (210) from the first to the second video stream (201a, 201b) when the sub object (210) is within the overlap area (203) and when a point of the sub object (210) passes a border (208).

Abstract: An arrangement for determining an amount of light reaching an image sensor of a video camera, the video camera comprising an imaging lens system guiding a beam path towards an image sensor, wherein the arrangement comprises a transparent probing element through which the beam path passes on its way to the image sensor, and a light sensor arranged in an end of the transparent probing element. The light sensor is arranged to collect light being scattered or reflected in the transparent probing element.

Abstract: An arrangement for determining an amount of light reaching an image sensor of a video camera is disclosed. The video camera comprises an imaging lens system guiding a beam path towards an image sensor and has an aperture plane where a variable aperture is arranged. The inventive arrangement comprises a light sensor arranged to probe light intensity continuously from a portion of the beam path, which portion is located in or near the aperture plane of the imaging lens system.

Abstract: A method for encoding and transmitting a plurality of image frames of a video stream includes: intra refresh encoding the plurality of image frames; encoding one image frame of the plurality of image frames to produce encoded image data of the one image frame, the encoded image data being organized in a plurality of data packets, wherein the encoding comprises intra frame encoding the one image frame; transmitting, over a time period, the intra refresh encoded image frames; transmitting the plurality of data packets, wherein the transmission of the plurality of data packets is distributed over the time period during which the intra refresh encoded image frames are transmitted. An interrelated method for receiving and storing the plurality of image frames, as well as devices and computer program products for performing the methods, are also provided.

Abstract: A method of providing an event-initiated video sequence, comprises a pre-event video sequence and a post-event video sequence. The pre-event image frames are stored in a non-processed format until such time that an event is taking place. By postponing the image processing of the pre-event video sequence, power savings are accomplished.

Abstract: A method and system for composing a video of a course of actions along a track in an area monitored by a plurality of video cameras. A first sequence of user inputs defining the track is received. Each user input in the first sequence is associated with a time stamp and is received as an indication of a position in a map of the area being monitored. For each user input in the first sequence, video recordings from those that have a field-of-view covering the position indicated by the user input are collected. The collected video recordings are recorded in a time period starting at the time stamp associated with the user input and ending at a time stamp associated with a next user input in the first sequence or when an indication to stop the collecting is received. A video material is then composed from the collected video recordings.

Abstract: A method for storing a file containing personal data comprises obtaining a temporary anonymous identifier (AnonID.m) of a person, which temporary anonymous identifier (AnonID.m) is dependent on a token (FileID.m) of the file; extracting personal data items from the file associated with the person; for each personal data item, generating a locator (Loc.m.n), which allows the personal data item to be reinstated into the file, and an item-specific anonymous identifier (AnonID.m.n) of the person, wherein the item-specific anonymous identifier is generated by applying a predefined one-way function to a combination of the temporary anonymous identifier (AnonID.m) and an identifier (n) of the personal data item; storing each personal data item together with the locator and the item-specific anonymous identifier in a first memory; and storing an anonymized version of the file without the personal data items in a second memory.

Abstract: A method, performed by an image-capturing device, for installing the image-capturing device on a network. The image-capturing device operates according to an installation mode in which a limited set of persistent software settings of the image-capturing device can be changed and an installation-mode video stream which is privacy safe is anonymously accessible. The method comprises providing the installation-mode video stream in response to connecting the image-capturing device to the network.

Abstract: A method for updating a coordinate of an annotated point in a digital image due to camera movement is performed by an image processing device, which obtains a current digital image of a scene. The current digital image has been captured by a camera subsequent to movement of the camera relative the scene. The current digital image is associated with at least one annotated point. Each at least one annotated point has a respective coordinate in the current digital image. The method comprises identifying an amount of the movement by comparing position indicative information in the current digital image to position indicative information in a previous digital image of the scene. The previous digital image has been captured prior to movement of the camera. The method comprises updating the coordinate of each at least one annotated point in accordance with the identified amount of movement and a camera homography.

Abstract: A method includes aligning a first image frame of a first stream of images from a first image sensor and a further first image frame of a second stream of images from a second image sensor according to a first alignment, aligning a second image frame of the first stream of images and a further second image frame of the second stream of images according to the first alignment, obtaining a first stitched image frame by blending the aligned first image frame and further first image frame in a first blending area according to a first blending function, obtaining second stitched image frame by blending the aligned second image frame and the further second image frame in a second blending area according to a second blending function, and evaluating the first alignment from a difference pattern calculated from pixel values of the first stitched frame and the second stitched frame.

Abstract: A method for counting a number of moving objects that cross at least one predefined curve in a scene comprises making detections of positions of one or more moving objects in the scene, tracking the positions of the moving objects over time based on the detections to produce one or more corresponding tracks, wherein each track is described by a time dependent probability density function, calculating, for each moving object, a success probability pi that the moving object succeeded to cross the at least one predefined curve in the scene, wherein the success probability is calculated by using the time dependent probability density function describing the track of the moving object, and calculating an expected value and a variance of a number of moving objects that crossed the at least one predefined curve by summing success probabilities pi and summing products pi(1?pi) of success and corresponding failure probabilities, respectively.

Abstract: Systems and methods are disclosed that provide a secure wireless connection between two electronic devices. Techniques disclosed comprise: generating, on a server, a temporary code; registering, on a first device, the temporary code; sending, from the server to a second device, the temporary code; determining, on the first device, a first temporary credential based on the temporary code; determining, on the second device, a second temporary credential based on the temporary code; establishing, using the first and the second temporary credentials, a temporary connection between the first and the second devices; determining, on the second device, a secure credential; sending, from the second device to the first device, the secure credential via the temporary connection; and establishing, using the secure credential, a secure connection between the first and the second electronic devices.

Abstract: An display installation hinge includes pivot arms extending from a lower portion of a housing, for enabling pivoting between an open position in which the pivot arms may engage with the display, and a closed position in which the display has been moved to a closed position in relation to the wall-mounted housing. The pivot arms have a distal free end configured to engage with the display, wherein a proximal end of the pivot arms is associated with a pivot axis. The installation hinge further comprises a physical guide configured to support the display when the display is in engagement with the pivot arms in the open position, so as to prevent it from moving down the pivot arms. The physical guide is configured to release the support as the pivot arms are in the closed position, enabling for the display to travel further down the pivot arms.

Abstract: A video management system for displaying video streams from a plurality of monitoring devices arranged in a network in a video display arrangement. Each monitoring device constitutes a node in the network and has a logical connection to at least one other node. The video management system is configured to: in response to a first input, zoom out from a first subset of views from a first monitoring device or a first group of monitoring devices to a second subset of views, by adding views from a predetermined number of monitoring devices having a direct logical connection to the first monitoring device or the group of monitoring devices, to the video display arrangement, thereby increasing a neighbor monitoring level by one; and in response to a second input, zoom in from the second subset of views thereby decreasing the neighbor monitoring level by one.

Abstract: A method for forming a combined image frame of a combined video stream comprises: capturing image frames of first and second video streams; encoding image data of the image frames of the first and second video streams, wherein each image frame of the first and second video streams are respectively encoded into first and second encoded data comprising a plurality of rows wherein each row has a height of a single coding unit and a width equal to a width of the image frame and is encoded as one or more slices; and combining the first and second encoded data into combined encoded data by interleaving rows of the first and second encoded data. The combined encoded data representing the combined image frame of the combined video stream.

Abstract: A method in an access control system comprising a control unit connected to one or more mobile devices using radio-frequency signal communication. The control unit sends a motion status request to a connected mobile device out of the one or more connected mobile devices in response to the generated event. The method comprises determining an indication of a probability that the connected mobile device is associated with the event. Determining the indication is based on received signal strength data, measured by the connected mobile device on the radio-frequency signals transmitted by the control unit during a first predetermined period of time before the motion status request is received, and motion sensor data collected from a motion sensor comprised in the connected mobile device during a second predetermined period of time before the motion status request is received.