Abstract: A method for detecting an object crossing event at a predetermined first line in a scene captured by a motion video camera is disclosed. The method comprises determining from images of the scene captured by the motion video camera if an object image crosses the predetermined first line, calculating a size value relating to the size of the object image crossing the predetermined first line, setting a line distance value to a value calculated from the distance between a contact point of the object with the predetermined first line and a nearby point on a predetermined second line, and generating an object crossing event signal if a relation between the calculated size value and the line distance is within a predetermined range.

Abstract: A method for adjusting an audio zone sound image in an audio system (2, 6, 7) comprising a plurality of audio zones (2A, 2B, 6A, 6B, 6C, 6D, 7A, 7B, 7C) is disclosed. Each audio zone has one or more loudspeakers (20, 21, 60, 61, 63, 64, 65, 66, 67, 68, 69, 70, 72, 73, 74, 75) located therein. The method comprises recording (101, 802) a sound image of a controlling audio zone; transmitting (102, 803) audio data corresponding to the recorded sound image to a controller; evaluating (103, 103a, 804) the transmitted audio data; selecting (104, 805) an adjusting audio zone, wherein the adjusting audio zone is other than the controlling audio zone; and adjusting (105, 105a, 105b, 807) an adjusting loudspeaker such that the sound image of the controlling audio zone is changed. An audio system (2, 6, 7) and a controlling loudspeaker are also disclosed.

Abstract: A camera cover glass unit comprises a cover glass, arranged to protect an image capturing unit of a camera and a cover glass frame arranged to hold the cover glass is disclosed. A resilient structure is mounted between the cover glass and the cover glass frame and allows the cover glass to move in relation to the cover glass frame. A first permanent magnet is attached to the cover glass, and a motor is arranged to rotate a second permanent magnet in relation to the first magnet, in order to achieve a time-variant magnetic field, such that the second magnet attracts and repels the first magnet to a varying degree, thereby causing the cover glass to move in relation to the frame.

Abstract: A lens arrangement for a monitoring camera and a monitoring camera including a lens arrangement is provided. The lens arrangement includes a lens member having a connection portion with an outer thread, an adjustment member having a through hole for receiving the connection portion and an inner thread corresponding to the outer thread, a holder member having a receiving portion for receiving the connection portion and an inner thread corresponding to the outer thread. The lens arrangement is assembled by the connection portion being screwed into the through hole and further into the receiving portion. The receiving portion has a top engagement surface and the adjustment member has a bottom engagement surface. The adjustment member is movable relative to the holder member by screwing between non-engaging and engaging states. In the engaging state, the bottom engagement surface wedgingly engages with the top engagement surface for locking the lens member.

Abstract: A dome (102) for a monitoring camera system comprises several monitoring cameras. The dome is formed from a transparent material, and has a toroidal shape with a rotational symmetry along a rotational angle (?) around a first axis of symmetry (S1). An outer segment of the dome, in section, has a shape further defined by a second axis of symmetry (S2) arranged at a first radius (R) from the first axis of symmetry (S1) and is orthogonal to the first axis. The outer segment has a curvature following a second radius (r) over an angle (?) around the second axis of symmetry (S2).

Abstract: Described is a method and apparatus for controlling a degree of compression of a digital image, and more specifically to such method and apparatus which receives a stereoscopic digital image, and controls a degree of compression of the digital image based on block matching characteristics between the two images of the stereoscopic digital image.

Abstract: A scene is monitored by receiving image data representing a thermal image captured by a thermal image sensor (13) and a visual image captured by a visual image sensor (15), the thermal image and the visual image depicting a same view of the scene. Objects (9) are detected in the visual image and in the thermal image. A mask (17a) is defined in the view of the scene, and it is determined if an object (9) or an object part, inside the mask (17a), is present in both the thermal image and the visual image. If so, a modified mask (17b) is provided by excluding an area occupied by the object (9) or the object part from the mask (17a).

Abstract: A method relates to distributing user credentials in a distributed physical access control system, and more generally to distributing user credentials in a distributed system. A method may include storing a user credential database (DB), a first transformed credential DB and a second transformed credential DB for authenticating users to access a first and a second service provided by the device. The method may include generating the first transformed credential DB and the second transformed credential DB based on the user credential DB and comparing a credential received from a user to the first or the second transformed credential DB to determine whether to grant access to the first or the second service. The method may include distributing the user credential DB to a plurality of other devices connected in a network for the other devices to generate transformed credential DBs for authenticating users to access services.

Abstract: A method for audio calibration of an audio device is provided. The method comprises: registering, by a microphone, a representation of an audio signal; processing, by a data processing unit, the registered representation of the audio signal into feedback image data; displaying on a display, the feedback image data; capturing, by a camera, the feedback image data displayed on the display; altering a setting affecting audio of the audio device based on the feedback image data captured by the camera. A system for audio calibration of an audio device is further provided.

Abstract: Apparatus, systems and techniques associated with battery powered wireless camera systems. One aspect of the subject matter described in this specification can be embodied in a system that includes a battery powered wireless camera including an internal battery to provide energy and a burst transmission unit to transmit information during burst periods. The system includes a base station, separated from the battery powered wireless camera, in wireless communication with the battery powered wireless camera to receive information from the battery powered wireless camera. The base station is configured to process the received information and includes a web server to transmit the processed information to a client. Other embodiments of this aspect include corresponding systems, apparatus, and computer program products.

Abstract: A locking device for locking an image sensor element in a camera, a camera comprising such a locking device, and a method for controlling image stabilization in a camera comprising such a locking device are disclosed. The locking device comprises two locking arrangements which are superimposed such that one or more locking holes of the locking arrangements at least partly overlap each other in pairs so as to form two open sections adapted to each receive a locking protrusion. The locking device is adjustable between a locked mode and an unlocked mode.

Abstract: The present invention relates to a method and a camera for determining an image adjustment parameter. The method includes receiving a plurality of images representing an image view, detecting from the plurality of images events of a specific event type, identifying a location within the image view where the event of the specific type is present, determining a presence value of each of the identified locations, and determining an image adjustment parameter based on data from an adjustment location within the image view. The adjustment location is determined based on the presence value in each location of a plurality of locations within the image view.

Abstract: There is provided a method for pre-processing a video stream for subsequent motion detection processing. The method comprises receiving a video stream of images, wherein each image in the video stream is represented by a first plurality of bits; enhancing the video stream of images by, for each image in the video stream: comparing the image to at least one previous image in the video stream so as to identify pixels where the image differs from the at least one previous image in the video stream, enhancing the image in those pixels where the image differs from the at least one previous image in the video stream; and converting the enhanced video stream of images so as to produce a converted video stream of images for subsequent motion detection processing, wherein each image in the converted video stream is represented by a second plurality of bits being lower than the first plurality of bits.

Abstract: Playback of motion video is presented. A method may comprise requesting streaming of a specific motion video sequence from a storage device to a playback device, streaming motion video data of the requested motion video sequence, displaying the streamed motion video data as the streamed motion video data is received, and sending a request of change of playback speed to the data storage device. In response to the request, decoding, in the data storage device, motion video data from a temporal position in the specific motion video sequence that has not yet been streamed to the playback device, compressing, in respect of time, the decoded motion video data, encoding the compressed motion video data using an encoding scheme corresponding to an encoding scheme used to encode the specific motion video sequence, and continue streaming the motion video sequence to the playback device using the compressed and encoded motion video data.

Abstract: A device may correspond to a physical access controller in a distributed physical access control system. The device in a distributed system may include logic configured to detect a request from an application to access an application dataset, wherein the application dataset corresponds to a distributed dataset and determine whether the application dataset exists in the distributed system. The logic may be further configured to generate the application dataset in the distributed system, in response to determining that the application dataset does not exist in the distributed system, and send, to other devices in the distributed system, a request to join a dataset group that includes devices associated with the application dataset, in response to determining that the application dataset exists in the distributed system.

Abstract: A method may include a device joining a distributed database in a distributed physical access control system. The method may include storing first data in a first memory area of a memory. The first memory area may be designated to store data for a consensus-based distributed database (DB). The first data is to be added to the consensus-based distributed DB that is distributed among other devices in a network. The method may include copying the first data to a second memory area of the memory of the device and adding the device to the network, receiving data from the other devices in the network and adding the received data to the consensus-based distributed DB by storing the received data in the first memory area, and adding the first data to the consensus-based distributed DB by copying the first data from the second memory area to the first memory area.

Abstract: An integrated Internet camera includes, an infrared sensor, an optical system for forming an image on the infrared sensor and lenses formed from infrared transmitting material, an image capturing circuit, for capturing digital images from the infrared sensor; a network interface device connectible to a computer network for transmission of the digital images, as digital image files, across the computer network. A file transfer device of the camera communicates, via the network interface device, with a destination computer at a selected network address on the computer network, and transfers the digital image files to the destination computer according to a predetermined file transfer protocol. A transport control device of the camera controls addressing of the digital image files to the selected network address. The camera self-initiates a connection with the computer network and a connection with the destination computer at the selected network address.

Abstract: A network status measuring system comprising a processor; a display circuitry configured to display a schematic overview of the network; a data traffic measuring circuitry configured to measure bit rate and latency on links of the network; and a graphic generating circuitry configured to generate a graphical representation of a bit rate and a latency measured on a particular link of the network by generating objects to be displayed at the particular link of the network in connection with the schematic overview of the network. The processor is further configured to calculate a number of the objects to be displayed at the particular link of the schematic overview of the network based on the bit rate measured on the particular link of the network. The display circuitry is further configured to display the generated objects at the particular link of the schematic overview of the network.