Abstract: A video processing device which generates motion metadata for encoded video comprises a decoder configured to decode frames of an encoded video into image frames; and a processing circuitry configured to execute a motion meta data deriving operation on image frames decoded by the decoder. The motion meta data deriving operation comprises: a dividing function configured to divide a current image frame into a mesh of cells, wherein each cell comprises multiple image pixels, a comparison function configured to determine a metric of change for each cell by comparing pixel data of each cell with pixel data of a correspondingly positioned cell of a previous and/or subsequent image frame, and a storing function configured to store the metric of change for each cell as the motion metadata related to the current image frame.

Abstract: A method for detecting events comprises repeatedly registering a value indicating an amount of data generated by an encoder, which is encoding video from a scene by means of temporal compression, determining if a particular event has occurred in the scene represented by the encoded video by comparing characteristics of the registered values with predetermined characteristics, and generating an event signal in response to an event occurrence being determined.

Abstract: A method and device for communicating video for synchronization between a portable wearable camera and a wireless hub device are described. The portable wearable camera may capture first video data. Also, the portable wearable camera may transmit the first video data to the wireless hub device via a first wireless connection, and may capture second video data. When the first wireless connection between the wearable camera and the wireless hub device is unable to support full resolution video playback, the portable wearable camera may store the second video data. Further, the portable wearable camera may receive a request from the wireless hub device for the second video data via a second wireless connection, and may capture third video data. Further, the portable wearable camera may transmit, to the wireless hub device, the third video data via the first wireless connection and the second video data via the second wireless connection.

Abstract: A traffic monitoring system generates a low-light image of a set of. The traffic system comprises a camera and a processing unit. The camera generates a first image comprising a set of pixels, each pixel comprising colour encoding values corresponding to a pixel colour, a saturation value, and a luma value. The processing unit is configured to, for each pixel corresponding to a first set of colours, reducing the saturation value of the pixel, and where the pixel colour corresponds to red and where the luma value of the pixel is below a first threshold, reducing the saturation value of the pixel, where the pixel colour corresponds to red and where the luma value of the pixel is equal to or above the first threshold, preserve the saturation value of the pixel, and generate the low-light image based on the modified colour encoding values of the first image.

Abstract: A device may include a memory storing instructions and a processor configured to execute the instructions to receive, from a configuration client device, a request to register a resource; and identify a domain object associated with the resource, wherein the domain object corresponds to a logical entity representing a device or port, or corresponds to a logical entity controlling another resource included in another domain object. The processor may be further configured to select a domain object handler for the identified domain object; register the identified domain object with the selected domain object handler; and use the selected domain object handler to process messages associated with the registered domain object.

Abstract: A camera for introducing light pulses in an image stream, comprising an image sensor arranged to capture an image stream, the image sensor comprising a plurality of pixels arranged to capture light of a first wavelength range. The at least one of the plurality of pixels is covered by a first material which is arranged to transform light of a second wavelength range to light of the first wavelength range. Further the camera comprises a first light source arranged to emit light pulses of light of the second wavelength range onto the first material, thereby causing the image sensor to register light pulses in the at least one pixel covered by the first material.

Abstract: A video camera system comprises an imaging system having a camera lens and an image sensor, and a retractable IR-cut filter, and a control unit for controlling the imaging system. The video camera system has a day-mode in which the IR-cut filter is arranged in front of the image sensor, and a night-mode in which the IR-cut filter is retracted from its position in front of the image sensor. Furthermore, the video camera has a field of view defined by properties of its imaging system, and it comprises a separate light-sensor for measuring an ambient light level so as to support a decision regarding when to actuate a transfer from night-mode to day-mode, or vice versa. The camera system is characterized in that the separate light sensor has imaging optics and is enabled for a variable field of view, which is aligned with a field of view of the video camera system, and in that a current field of view of the video camera system is used when selecting an active field of view of the separate light sensor.

Abstract: The present invention discloses a method of injecting additional data in one or more image sensor frames in an image sensor device. The method comprises: providing (801) additional data in the form of a numeric sequence, controlling (802) the lengths of subsequent blanking intervals in one or more image sensor frames to represent the numeric sequence, and transmitting the one or more image sensor frames from the image sensor device. The one or more image sensor frames may be transmitted to an image processor (12, 72). Examples of image processors (12, 72) and a system (1, 7) comprising an image processor (12, 72) are also disclosed.

Abstract: The present disclosure relates to a method performed by an assessment system (1) for prioritization among cameras (21, 22, 23, 2n) of a multi-camera arrangement (2). The assessment system obtains (1001) respective geographical camera position (211, 221, 231, 2n1) and camera properties (212, 222, 232, 2n2) of each of the cameras. The assessment system further receives (1002) information data (43) indicating a geographical object position (41) and object features (42) of a physical object (4) positioned in a surrounding (5) in a potential field of view (213, 223, 233, 2n3) of each of the cameras. Moreover, the assessment system determines (1003)—for each of the cameras—by comparing the object position and object features with the respective camera position and camera properties, a respective distance (D1, D2, D3, Dn) to the object position and a respective expected pixel size of the object at the respective distance.

Abstract: High dynamic range imaging includes first image data captured using a first image sensor and a first exposure time, using a rolling shutter such that different lines within the first image data are captured at different times. Two or more instances of second image data are captured using second image sensors and second exposure times that are shorter than the first exposure time. The second image data are captured using a rolling shutter, and overlap at least in part with the first image data. A line of the first image data has a corresponding line in each instance of second image data, and the corresponding instances of second image data are captured at different second capture times. For a line in the first image data, the corresponding line from the instance of second image data is selected to be merged with the line in the first image data.

Abstract: A method, system, and non-transitory computer readable medium for encoding a privacy masked image into an encoded image frame of a video stream is disclosed. The encoding comprises receiving pixel divided image data of an image; receiving data defining an area and graphical characteristic of a privacy mask that masks part of the image; extending the privacy mask to be aligned with one or more encoding units having one or more pixels located within the privacy mask to form a redefined privacy mask; generating a privacy masked image by applying the redefined privacy mask and the graphical characteristic of the privacy mask to the image; and encoding the privacy masked image into the encoded image frame of the video stream, wherein the encoding comprises preventing spatial prediction encoding and/or temporal prediction encoding of pixels within the redefined privacy mask of the image in response to certain conditions.

Abstract: Methods and apparatus, including computer program products, for determining a presence of an object located close to a lens (301) of a camera monitoring a scene. A first infrared illumination source (302) arranged to illuminate the scene from a first angle is activated. A first image (304) is acquired by the image capturing device (300). The first infrared illumination source (302) is deactivated, and a second infrared illumination source (306) arranged to illuminate the scene from a second angle is activated. A second image (308) is acquired by the image capturing device (300). Intensity information of the first image (304) and the second image (308) is compared to determine the presence of an object located close to the lens (301).

Abstract: A method for establishing a secure wireless connection comprising: 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, the 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, the secure connection between the first and the second electronic devices.

Abstract: A system and method for handling data captured by a body worn camera are disclosed. The system may include a body worn camera, a docking station, and a recorder. The camera may include a local storage device. The docking station may include a data interface for connecting the local storage device to the docking station, and a first network interface for connecting the docking station to the recorder. The docking station may be physically separate from the recorder. The recorder may include a second network interface for connecting the recorder to the docking station, and a recorder storage device. The recorder may be arranged to retrieve the captured data from the camera and store it in the recorder storage device, and may include a third network interface for transfer of stored data to a data management system.

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: Methods and apparatus, including computer program products, for detecting malfunction in a thermal camera. A first average response value is determined for a first shutter image captured by an image sensor in the thermal camera. A second average response value is determined of a second shutter image captured by the image sensor in the thermal camera. The first average response value and the second average response value are compared. In response to determining that the first average response value and the second average response value differ by more than a predetermined value, an indication of a malfunction of the thermal camera is provided.

Abstract: Methods and apparatus, including computer program products, for detecting a problem with a thermal camera. A current contrast value is determined for the thermal camera. It is determined whether the current contrast value deviates from a reference contrast value by more than a predetermined value. In response to determining that the current contrast value deviates from the reference contrast value by more than a predetermined value and for more than a predetermined period of time, an indication of a problem with the thermal camera is provided.

Abstract: There is provided a computer implemented method for displaying a video stream of a scene (100) captured by a video capture device on a display of a client device.