Abstract: A method and apparatus for determining a focal-length setting of a lens mounted to a camera is disclosed. In a method for determining a focal-length of a lens mounted to a camera, a distorted image of a scene is captured. A distortion-correction function is applied on the distorted image or on a portion of the distorted image. A most representative distortion-correction function is identified and a current focal-length setting for the lens is identified by correlating the identification to a data compilation.

Abstract: Method for distributing bandwidth between a plurality of devices in a system having bandwidth limitations, and in particular to a method for negotiating bandwidth in such a system wherein the plurality of devices are interconnected in a peer-to-peer network.

Abstract: A method according to the invention for connecting a monitoring device to a service server may comprise retrieving an address relating to a control server from a memory of the monitoring device, sending a connection message from the monitoring device to the address relating to a control server in response to a connecting event, extracting, at the control server, an identifier from the communication between the monitoring device and the control server, identifying, at the control server, a service server associated with the extracted identifier, sending an address relating to the identified service server from the control server to the monitoring device, sending a connection message from the monitoring device to the identified service server in response to the receipt of the address related to the identified service server, establishing a service connection between the monitoring device and the identified server.

Abstract: An apparatus and a method implemented in a computer system for obscuring a first region of an image composed by a plurality of pixels. The method comprising obtaining a mask, the mask defining an obscurity level for each pixel in the first region of the image, and obscuring pixels in the first region of the image based on the mask's obscurity level for each pixel.

Abstract: An apparatus and a method for controlling a heating device in a motorized camera directing arrangement including a motor device is disclosed. The method comprising measuring a voltage over the motor device, measuring a current conducted at least to the motor device, measuring a temperature relating to the motorized camera directing arrangement, controlling power distributed to the heating device based on the measured temperature and on the measured current, and feeding power to the heating device independent of the measured temperature and the measured current in the event that the measuring of the voltage over the motor device indicates a voltage level higher than a predetermined threshold value.

Abstract: A method for correcting and presenting a barrel distorted image is disclosed. In the method an output image is created having a user-defined aspect ratio (AR), and the method comprises acquiring a continuous flow of barrel distorted images in a video camera and processing the image in an image processing unit. The processed image is added as an output image to an image stream, and the actual processing includes applying a barrel distortion correction so as to form a corrected image having a smallest width (w?) and a smallest height (h?), and generating the output image by cropping the corrected image to a height exceeding or equaling the smallest height (h?) and having the user-defined aspect ratio (AR).

Abstract: A method for configuring a plurality of networked cameras includes sending a request to the plurality of networked cameras requesting information relating to enabled storage type of each networked camera, receiving a response from networked cameras. The response includes information relating to storage type enabled in networked camera. The method further includes determining storage type to use for each networked camera that are enabled to autonomously store images at a storage means, where the determining of storage type is performed based on the information relating to enabled storage types received from these networked cameras, and sending a storage instruction to each camera for which a storage type has been determined. The storage instruction instructs a camera to store captured images on a storage means of a specific type.

Abstract: A method for encoding video is disclosed. The method comprises the steps of receiving information representative of pixels in a current digital image frame of a video to be encoded, calculating a group value for each group of neighboring pixels based on the received information, accumulating group values of corresponding groups of pixels in a first sequence of frames to form a first accumulation of accumulated group values, accumulating group values of corresponding groups of pixels in a second sequence of frames to form a second accumulation of accumulated group values, wherein the second sequence includes frames captured over a longer period of time than the first sequence, comparing accumulated group values of the first accumulation with accumulated group values of the second accumulation, calculating a global change value based on the comparison, setting a GOP length based on the global change value; and encoding the current image frame as an intra-frame or inter-frame based on the GOP length.

Abstract: A controller device may correspond to a physical access controller in a distributed physical access control system. The controller device may include logic configured to obtain access to a global database that include access control information for a plurality of controller devices. The logic may be further configured to derive a local access rules table from the global database, wherein the local access rules table relates users to access rules, and wherein the local access rules table is encrypted with a local access rules key; and derive a local credentials table from the global database, wherein the local credentials table relates hashed credentials to users, wherein the local credentials table stores, for a user, the local access rules key encrypted with unhashed credentials associated with the user, wherein the unhashed credentials are not stored in the controller device.

Abstract: A computer device includes logic configured to implement a tunnel broker. The tunnel broker is configured to receive a request from a client device for a service in a system, the service having a requested service property; select a first node in the system that hosts a first service instance having the requested service property; and establish a communication tunnel with a first end at the client device and a second end at the selected first node. The tunnel broker is further configured to determine that the first node no longer hosts the first service instance having the requested service property or that the first node has become unreachable; select a second node in the system that hosts a second service instance having the requested service property; and move the second end of the communication tunnel from the first node to the second node.

Abstract: The present invention relates to a method, and an arrangement for attaching a lens to a lens holder. The method comprises: arranging a fixing arc of a fixing part around a compressible retainer of the lens holder, inserting an attachment portion of the lens into the compressible retainer, and reducing a radius of curvature of the fixing arc, such that the compressible retainer of the lens holder is compressed around the attachment portion, thereby attaching the lens to the lens holder.

Abstract: A physical access control system, PACS, (100) comprises at least one reader (103) and a method performed comprises a number of actions that begin with obtaining a first indication that the at least one reader (103) requires reader configuration information. In response to the first indication, the control unit obtains the required reader configuration information. A protocol (108, 110) with which the at least one reader (103) is capable of communicating with a control unit (101) is determined and the required reader configuration information is then interpreted into protocol specific data. Using the determined protocol, the control unit (101) then transmits the protocol specific data to the at least one reader (103).

Abstract: There is provided a method for configuration of a camera which is a replacement for one of a plurality of cameras in a network. The method comprises inter alia detecting that a new camera has connected to the network; determining that the new camera is a replacement for a particular camera among one or more candidate cameras if property data of the new camera matches property data of the particular camera; and configuring the new camera based on configuration settings corresponding to the particular camera.

Abstract: An antenna (200) comprises an antenna body (212). The antenna body is integrally formed as a part of a PCB (210) and the antenna body is enclosed by metal. The antenna body may be enclosed by printed or plated metal on both top and bottom surfaces of the PCB and by edge plated metal along the circumference of the antenna body.

Abstract: There is provided a method and an apparatus for updating a background model used for background subtraction of an image. An image is received and each pixel in the image is classified as being foreground or background by performing background subtraction using a background model which comprises a collection of background samples for each pixel in the image. For each pixel in the image being classified as background, the background model is updated by selecting a background sample in the collection of background samples associated with the pixel which fulfills a similarity condition, and replacing the background sample which fulfills the similarity condition with image data of the pixel.

Abstract: A method and an apparatus for playing back recorded video from a temporal position within a temporal range of the recorded video is disclosed. The recorded video including intra frames and inter frames and the recorded video including video sequences having different frame rates. The method comprises receiving a request for playing back the recorded video from a specific temporal position recorded in the recorded video, identifying an intra frame at an earlier temporal position in the recorded video than the specific temporal position received in the request, playing back the recorded video in a first mode from the identified intra frame, and playing back the recorded video in a second mode from the specific temporal position in the recorded video when the playing back of the recorded video in the first mode have arrived at the specific temporal position of in the recorded video.

Abstract: A monitoring device arrangement is disclosed that may comprise a mounting rail and at least two fixed monitoring devices. The fixed monitoring devices may each being mounted on a respective holder. The holders may be arranged on the mounting rail. Each holder may include a lock device that locks the holder in a determined position on the mounting rail. The lock device may be releasable to allow sliding repositioning of the holder on the mounting rail.