Abstract: An apparatus including a video data decoder configured to decode an input video data stream, the video data decoder being responsive to a parameter value associated with the input video data stream, the parameter value indicating an encoding level selected from a plurality of encoding levels, each encoding level defining at least a maximum luminance picture size and a maximum luminance sample rate, the encoding level defining a first numerical component and a second numerical component, the second numerical component being a numerical value greater than or equal to zero, in which for encoding levels having a second numerical component of zero, the first numerical component increases monotonically with increasing maximum luminance picture size, and the second component varies with the maximum luminance sample rate; the parameter value being a numeric encoding of the encoding level.

Abstract: The disclosure relates to double stranded ribonucleic acid (dsRNAi) agents and compositions targeting the APP gene, as well as methods of inhibiting expression of an APP gene and methods of treating subjects having an APP-associated disease or disorder, such as cerebral amyloid angiopathy (CAA) and early onset familial Alzheimer disease (EOFAD or eFAD), using such dsRNAi agents and compositions.

Abstract: The disclosure relates to double stranded ribonucleic acid (dsRNAi) agents and compositions targeting the APP gene, as well as methods of inhibiting expression of an APP gene and methods of treating subjects having an APP-associated disease or disorder, such as cerebral amyloid angiopathy (CAA) and early onset familial Alzheimer disease (EOFAD or eFAD), using such dsRNAi agents and compositions.

Abstract: An image encoding apparatus comprises a selector configured to select, from a set of candidate prediction operations each defining at least a prediction direction selected from a set of available prediction directions, a prediction operation for prediction of samples of a current region of a current image, the current region comprising an array of two or more rows and two or more columns of samples; and an intra-image predictor configured to derive predicted samples of the current region with respect to one or more of a group of reference samples of the same image in dependence upon a prediction direction, defined by the selected prediction operation, between a current sample to be predicted and the reference samples; in which for at least some of the candidate prediction operations: the group of reference samples comprises two or more parallel linear arrays of reference samples disposed at different respective separations from the current region, the intra-image predictor being configured to derive the predi

Abstract: Colour conversion apparatus comprises mapping circuitry configured to map pixels of an input image having colour components in an input colour space to pixels of an mapped image having colour components in an output colour space, the input colour space and the output colour space being different colour spaces such that at least a subset of colours representable in the input colour space are not representable in the output colour space; the mapping circuitry being configured to: convert pixels from the input colour space to an intermediate colour space in which a colour space representation of hue approximates to a consistent perceived hue independent of brightness and/or saturation; map pixels in the intermediate colour space which lie outside a region of the intermediate colour space corresponding to representable colours in the output colour space to generate mapped pixels so that the mapped pixels lie within that region, by varying the brightness and/or saturation of those pixels in the intermediate colour

Abstract: A central management system polls a lighting node in a mesh lighting network, sending a command message for the node to measure a link quality indication (LQI) of the received command message. The node returns a status message, including in its payload the measured LQI. The management system computes from the node's status messages, a statistical characterization of the link quality of the node and compares it with a threshold quality value. If the comparison indicates sufficient degradation in link quality, the management system automatically transmits a disconnect command to the node. In response, the node disconnects and enters a discovery mode to find a better quality link to rejoin the network. In example embodiments, the lighting node may also report its illumination and operational status in the payload of the status message, along with the LQI, enabling the management system to determine whether illumination by the node is failing.

Abstract: An image encoding apparatus comprises a selector configured to select, from a set of candidate prediction operations each defining at least a prediction direction selected from a set of available prediction directions, a prediction operation for prediction of samples of a current region of a current image, the current region comprising an array of two or more rows and two or more columns of samples; and an intra-image predictor configured to derive predicted samples of the current region with respect to one or more of a group of reference samples of the same image in dependence upon a prediction direction, defined by the selected prediction operation, between a current sample to be predicted and the reference samples; in which for at least some of the candidate prediction operations: the group of reference samples comprises two or more parallel linear arrays of reference samples disposed at different respective separations from the current region, the intra-image predictor being configured to derive the predi

Abstract: Example embodiments of the invention efficiently organize, control and prioritize a distributed lighting network. A mesh lighting network is organized from the bottom up into groups of lighting devices with control signal repeaters fanning out control signals to each group. Each lighting device is capable of forwarding control signals to additional lighting devices. During build-out of the mesh network, as new lighting devices are installed, the control network automatically selects a device whose repeater function will provide the most reliable and efficient distribution of control signals to the new group of devices being installed.

Abstract: Color conversion apparatus comprises mapping circuitry configured to map pixels of an input image having color components in an input color space to pixels of an mapped image having color components in an output color space, the input color space and the output color space being different color spaces such that at least a subset of colors representable in the input color space are not representable in the output color space; processing circuitry configured to process the mapped image by detecting instances, in the color components of pixels of the mapped image, of representations of negative amounts of a color component and in response to such a detection in respect of a pixel under test, to increase all of the color components of the pixel under test by an amount of at least the magnitude of the greatest magnitude negative amount of the color components of that pixel under test; and output circuitry configured to generate pixels of an output image, having color components in the output color space, from pixe

Abstract: Embodiments of systems, methods, and apparatuses for LED lighting for area lighting management, security and safety are described. An exemplary apparatus comprises a plurality of light emitting diodes (LEDs); a LED controller to drive the plurality of LEDs; and a controller to receive a radio frequency (RF) LED drive command and communicate the received drive command to the LED controller, wherein the LED controller to drive the plurality of LEDs according to the received drive command.

Abstract: A method of generating a cut-out from an image of a scene which has been captured by a camera is described.

Abstract: A method of controlling the movement of a virtual camera whose image plane provides a cut-out from a captured image of a scene is disclosed. The method comprises: defining a set of first pixel positions forming the boundary of the cut-out of the captured image; defining a set of second pixel positions for the boundary of the captured image; calculating a virtual camera rotation matrix to be applied to the first pixel positions, the virtual camera rotation matrix representative of the difference in at least one of the yaw and pitch of the image plane of the virtual camera and the image plane of the captured image of the scene, wherein the virtual camera rotation matrix is limited such that when one of the set of first pixel positions is transformed using the virtual camera rotation matrix, the transformed first pixel position is located within the boundary of the captured image.

Abstract: A method comprising: obtaining a disparity map for one of a left eye image and a right eye image, the disparity map indicating the horizontal displacement between corresponding pixels in the left eye image and the right eye image; generating a luminance representation of the disparity map, wherein a disparity unit which defines the resolution of the disparity map, is mapped to a corresponding luminance value; and companding the luminance value for transmission over a luminance channel is described.

Abstract: A method of detecting an object in an image at a client device is described. This method comprises the steps of: receiving from a server a two dimensional image of a scene, the scene being captured by a camera and the image comprising an object located within the scene, receiving from the server position data, the position data being indicative of the position of the object within the image; receiving from the server an outline representation of the object at that position, the outline representation defining for pixel positions in a segment of the image at that position whether the pixel position represents the object; and on the basis of said outline, detecting the object in the image.

Abstract: A method of controlling the movement of a virtual camera whose image plane provides a cut-out from a captured image of a scene is disclosed. The method comprises: defining a set of first pixel positions forming the boundary of the cut-out of the captured image; defining a set of second pixel positions for the boundary of the captured image; calculating a virtual camera rotation matrix to be applied to the first pixel positions, the virtual camera rotation matrix representative of the difference in at least one of the yaw and pitch of the image plane of the virtual camera and the image plane of the captured image of the scene, wherein the virtual camera rotation matrix is limited such that when one of the set of first pixel positions is transformed using the virtual camera rotation matrix, the transformed first pixel position is located within the boundary of the captured image.

Abstract: A camera arrangement comprising a 3 dimensional image capture portion arranged to capture a first stereoscopic image composed of a first and a second image and a further camera element spaced apart from the 3 dimensional capture portion, the further camera element arranged to capture a third image, whereby the third image, when viewed with either the first or second image forms a second stereoscopic image is described. A corresponding method and camera system is also described.

Abstract: A method comprising: obtaining a disparity map for one of a left eye image and a right eye image, the disparity map indicating the horizontal displacement between corresponding pixels in the left eye image and the right eye image; generating a luminance representation of the disparity map, wherein a disparity unit which defines the resolution of the disparity map, is mapped to a corresponding luminance value; and companding the luminance value for transmission over a luminance channel is described.

Abstract: A method of generating a three dimensional image from a two dimensional image having a background and a first foreground object and a second foreground object. The method includes determining whether the first and second foreground objects occlude, and generating an occluded combination of the first and second object to form a third foreground object when occlusion occurs. The method further includes applying a transformation to the third foreground object, and generating a copy of the third foreground object with the transformation applied thereto. Then, the third foreground object is generated stereoscopically for display based on the transformed third foreground object displaced relative to the copy of the third foreground object.

Abstract: An encoding data processing apparatus generates a marked version of an audio signal. The marked copy is generated by embedding data representative of a payload data word into the audio signal. A code word generator that generates a water mark code word from the payload data word and reads data representing the water mark code word into a shuffle data store. A shuffle processor that generates pseudo randomly at least one address within an address space of the shuffle data store for each predetermined period and reads data representing the water mark code word out from the data store at locations identified by the randomly generated address. A data embedding processor that receives the audio signal and embeds the data representing the water mark code word read out from the shuffle data store into the audio signal for each predetermined period.

Abstract: A method of providing, over a network, an image for recreation in a device, the image containing a background and a foreground object and the method comprising: detecting the position of the foreground object in the image and generating position information on dependence thereon; removing the foreground object from the image; and transferring to the device i) the image with the foreground object removed, ii) the removed foreground object and iii) the position information.