Abstract: A method and apparatus for inverse tone mapping of an LDR image with computer generated imagery components, such components being also called visual effects, are disclosed. The disclosed method includes accessing a first LDR image, the first LDR image being obtained from at least one computer generated imagery component rendered and composited into an LDR reference image or background plate; determining an HDR lighting indication responsive to information extracted from a part of the first LDR image and a respective part of a first intermediate HDR image obtained by applying a first pass inverse tone mapping to the first LDR image; obtaining a second intermediate HDR image by applying a second pass inverse tone mapping to the LDR reference image; obtaining the first HDR image from the computer generated imagery components rendered using HDR lighting indication and composited into the second intermediate HDR image.

Abstract: A television and a home cinema device work together in various embodiments to render an audio signal including at least a left channel, a right channel and a center channel. The left and right channels are rendered by left and right speakers coupled to the home cinema device, while the center channel is rendered by the left and right speakers of the television. The television can receive the audio signal, decode and render the center channel and send the audio, possibly reencoded left and right channels, to the home cinema device. The television can also send the audio to the home cinema device the returns the, possibly reencoded, center channel for rendering on the television. Alternatively, the home cinema device can receive the audio signal and provide the possibly reencoded center channel to the television. In an alternative, the center channel can be rendered by a soundbar coupled to the television.

Abstract: The present disclosure is directed towards automatically determining a context of an communication which is to be sent to a first user (615). Once the communication context is determined, other users are automatically suggested to receive the communication in that a characteristic of the user profiles of the suggested users match the context of the communication (630). The communication can then be forwarded to the suggested users in accordance with user input (635).

Abstract: Methods and apparatuses for processing a signal that is transmitted with a reduced peak to average power ratio are described. The processing includes applying (1650) a symbol constellation extension projection to at least one symbol in the constellation, the symbol constellation extension projection having an outward angular region from an original position for the at least one symbol in the constellation, the outward angular region defined by a value for an angle between a first boundary and a second boundary for the outward angular region, the value for the angle determined by a selection of the constellation used as part of the transmitted signal and a code rate used for encoding the stream of data.

Abstract: A device for immersive visual representations to a user of virtual scenes, inside a helmet enabling head movements, receives information related to positions of the user's eyes with respect to the helmet, determines visual generation parameters of the virtual scenes in function of that information, and provides those parameters for carrying out the immersive visual representations in the helmet based on those parameters. The device further determines the visual generation parameters so as to spatially adjust continuously the representations of the virtual scenes in function of the positions of the user's eyes. An individual head equipment comprises such a device, a helmet, at least one visual generation apparatus, and one or more sensor(s) providing the positions of the user's eyes.

Abstract: A method for detecting interferences in wireless networks is disclosed. A salient idea is to use a first access point for detecting an interference disturbing a wireless device associated with a second access point, wherein the device at the origin of the interference is in the range of the first access point, but not in the range of the second access point. Leveraging on the difference of coverage between different wireless networking technologies, the first access point is capable of detecting both a data traffic of a second access point and a short-range interfering device in a same frequency channel.

Abstract: To estimate content complexity of a video, energy of prediction residuals is calculated. The prediction residuals are usually smaller when the video is less complex and more predictable. Scales of prediction residuals also depend on encoding configurations, for example, I pictures usually have larger prediction residuals than P and B pictures even when the contents are very similar and thus have similar perceived content complexity. To more closely reflect the content complexity, alignment scaling factors are estimated for different encoding configurations. Based on the energy of prediction residuals and alignment scaling factors, an overall content unpredictability parameter can be estimated to compute a compression distortion factor for the video. The compression distortion factor, combined with slicing and freezing distortion factors, can be used to estimate a video quality metric for the video.

Abstract: The present disclosure relates to a method for reproducing an item of video content filmed using a camera. An item of video content composed of sequences is developed and enhanced by commands applied to the camera at the time of filming. With a view to reproduction, the video content is divided into sequences. The commands applied to the camera are extracted for each sequence and make it possible to calculate at least one haptic actuator control parameter associated with this sequence. At the time of the reproduction of a sequence of the video content, at least one control parameter thus calculated controls at least one haptic actuator. In this way, the spectator perceives stimuli making it possible to enhance his perception of the video document during the reproduction. Advantageously, the player able to reproduce the enhanced content determines a cinematographic effect for a set of sequences from commands applied to the camera.

Abstract: A method and an apparatus for generating lens-related metadata for a light field imaging device. An image renderer generates a display image from a light field capture using a lens model. A metadata assembler then outputs parameters of the lens model used for generating the display image as lens-related metadata for the light field imaging device.

Abstract: A method, arrangement and device comprising the arrangement enabling to determine if audio data is present in a digital audio/video stream. If presence of audio data is determined and audio is muted and/or below a determined level, a visual indication is generated which indicates the presence of audio data in the digital audio/video stream.

Abstract: The disclosure relates to a method for configuring an WLAN (Wireless Local Area Network) access point adapted to use at least one operational frequency channel to transmit or receive data when the access point is in an operational mode. The configuring includes checking an availability of at least one restricted frequency channel, a use of the restricted frequency channel being restricted by the availability, choosing the operational frequency channel from a set of frequency channels according to the checked availability, a first configuring comprising a first checking of restricted frequency channels belonging to a first proper sub-set of the set being performed before entering into the operational mode. At least one second checking of at least one restricted frequency channel of the set, that has not been checked as available, is performed after the first configuring.

Abstract: It is provided a method for backward recording in a device having a time-shift function, including: launching the time-shift function, when a user select one program, to record the program on a time-shift buffer; receiving an instruction to record a scene backward within the program being viewed by a user: acquiring information on the program from EIT(Event Information Table); determining a type of the program on the basis of the information; setting a duration of the backward recording dependent on the type of the program; and copying a data, which is stored in the time-shift buffer and corresponds to the duration backward from the time of receiving the instruction, in a storage of the device.

Abstract: A method for sculpting a template 3D model comprises receiving (12) a deformation to be applied to the template 3D model. In response to the received deformation, at least one action is executed (13) on at least the template 3D model or a reference 3D model. Such an action uses a set of dependency data representing interrelations between the reference 3D model and the template 3D model, the action(s) providing a user with a corrective feedback on the deformation to be applied, that feedback being adapted to enable the user to avoid exceeding deformation bounds in applying the deformation. The user sculpting the template 3D model can thus be guided during the modeling process.

Abstract: Methods and apparatus for estimating a depth of unfocused plenoptic data are suggested. The method includes: determining a level of homogeneity of micro-lens images of unfocused plenoptic data; determining pixels of the micro-lens images of the unfocused plenoptic unfocused plenoptic data which either have disparities equal to zero or belong to homogeneous areas as a function of the calculated level of homogeneity of the micro-lens images of the unfocused plenoptic data; and estimating the depth of the unfocused plenoptic data by a disparity estimation without considering the determined pixels. With the disclosure, by pre-processing the raw data, it can prevent any disparity estimation method to spend time on estimating disparities for: (i) pixels that are in focus, (ii) pixels that belong to homogenous areas of the scene.

Abstract: The invention relates to a method for allocating a data stream in a system comprising at least one service for broadcasting data stream, at least one server and at least two terminals, the one at least of said two terminals being able to receive a same program from at least two different sources, characterized in that said method comprises steps for: the reception, by said server, of a transmitted message by at least one first terminal, said message comprising an information indicating that said first terminal cannot receive a data stream identifying a source and a program, called first program that was asked for by request, the arbitration, by said server, of sources of said streams during transmission of programs to said terminals and of said request, the notification for the change of source to at least a second terminal to which the broadcasting service broadcasts a program, called second program, in order to meet the request of the first program of said first terminal.

Abstract: A method adapted to be implemented in a master device of a distributed sound system is described. The master device includes a plurality of audio input interfaces and is adapted to output audio signals on a set of at least two audio channels. According to an embodiment of the disclosure, the method includes detecting at least one audio signal conveyed by at least one of the audio input interfaces; routing the conveyed signal to at least one of the audio channels, the routing taking into account a number of detected audio signals. A corresponding master device, system, computer readable program product, and computer readable storage medium are also described.

Abstract: Various implementations provide one or more of improved programming channel change time and/or overall quality of television reception by using multiple transmission channels. In one particular implementation, a first layer of a picture is encoded using a first level of error protection. The encoded first layer has a first decoding delay. A second layer of the picture is encoded using a second level of error protection. The encoded second layer has a second decoding delay. The second level of error protection is lower than the first level of error protection, and the second decoding delay is longer than the first decoding delay. Other implementations provide a signal or signal structure carrying the encoded first and second layers. Yet further implementations decode the encoded first and second layers.

Abstract: A method and apparatus for automatically selecting a color for overlay on an image or video for presentation on a media device. The system identifies the most prominent color in an image, finds the closest match to that color in a predetermined number of colors, and then uses the closest match color to color the font of the title that is overlaid on the image.

Abstract: A method for obtaining, for at least one pixel of an image sensor comprised in an optical device, parameters defining a pixel beam is described. The method is remarkable in that it includes determining a direction of a chief ray associated with at least one pixel of the image sensor from the features of an optical system associated with the optical device, determining a set of pixels formed in a screen of a display device, the set of pixels comprising at least one pixel close to a point corresponding to an intersection of the chief ray and the screen, and the set of pixels comprising only pixels which are detected by the at least one pixel of the image sensor, when they are illuminated.

Abstract: A plenoptic camera has a moveable micro-lens array in optical registration with an image sensor. A first prime mover displaces the micro-lens array synchronized with a frame rate for the camera to obtain multi-resolution of a scene. A second prime mover displaces the image sensor to increase color sampling.