Abstract: In example embodiments, a waveguide display apparatus includes a waveguide comprising a substrate, a plurality of diffractive grating elements on the waveguide, and at least two coating layers on the waveguide between the substrate and the diffractive grating elements. The grating elements may be elements of a diffractive in-coupler. Some embodiments include three coating layers, with a middle layer having a refractive index greater than that of the substrate, the middle layer being between two layers having a refractive index lower than that of the substrate. Some embodiments further include a fourth coating layer.

Abstract: Example embodiments include an optical system comprising a waveguide substrate. A diffractive coupler is associated with the waveguide substrate, the diffractive coupler comprising at least two diffraction gratings. Each of the diffraction gratings includes a first layer of grating elements and a second layer of grating elements, the first and second layers of grating elements being arranged in different planes. The first and second layers of grating elements each have a grating period associated with the respective diffraction grating, and the grating elements of the second layer have a lateral offset with respect to the grating elements of the first layer.

Abstract: Example embodiments include a display apparatus having an image generator, a waveguide having an in-coupler and an out-coupler, and a prism or other light-deflecting component along an optical path between the image generator and the in-coupler. The image generator may have an optical axis that is not normal to the waveguide, and the waveguide may not be normal to a line of sight. The prism may be configured to deflect light such that light emitted along the optical axis is deflected to a direction such that the light from the optical axis is out-coupled at a direction substantially parallel to the line of sight. The non-normal arrangement of the image generator and line of sight with respect to the waveguide may allow a glasses-like display to better accommodate the form of a user's head.

Abstract: Some embodiments of a method may include defining a triggering area, the triggering area having a border with the border being arranged, at least partially, within a positioning zone for observing a multi view content displayed on a display based on a position of a viewer; and when the viewer position is located within the triggering area, triggering one or more incentive effects. Some embodiments of an apparatus may include a processor; and a memory-storing device storing instructions operative, when executed by the processor, to cause the apparatus to: define a triggering area, the triggering area having a border with the border being arranged, at least partially, within a positioning zone, for observing a multi view content displayed on a display based on a position of a viewer; and when the viewer position is located within the triggering area, trigger one or more incentive effects.

Abstract: The present disclosure concerns a method for displaying, on a 2D display device, a content derived from 4D light field data, based on a viewing position of a user. The 4D light field data corresponds to data acquired by either several cameras or by a plenoptic device.

Abstract: A method is proposed for detecting occlusions in an image captured by a light field capturing system, comprising, for at least one reference image belonging to a matrix of images captured by the light field capturing system: —calculating a depth map and a visibility map for pixels in the reference image; —determining at least one candidate area in the reference image in which the potential occlusion may occur based at least on a segmentation of the depth map; —determining an information representative of an occlusion state in the at least one candidate area based at least on visibility values of the visibility map associated with at least two neighborhoods of the at least one candidate area.

Abstract: A method and system is provided for refocusing images captured by a plenoptic camera. In one embodiment the plenoptic camera is in processing with an audio capture device. The method comprises the steps of determining direction of a dominant audio source associated with an image; creating an audio zoom by filtering out all other audio signals except those associated with said dominant audio source; and performing automatic refocusing of said image based on said created audio zoom.

Abstract: The present disclosure concerns a method for displaying, on a 2D display device, a content derived from 4D light field data, based on a viewing position of a user. The 4D light field data corresponds to data acquired by either several cameras or by a plenoptic device.

Abstract: Apparatus adapted for providing information to a user observing a multi view content displayed on a screen (106) according to the user's head position, wherein it comprises:—a means (104B) for generating a positioning zone to observe the displayed multi view content;—a means (104C) for defining a triggering area arranged, at least partially, within the positioning zone;—when the user's head position is located within said triggering area, a means (104D) for triggering one or more incentive effects to encourage the user to slay within the positioning zone.

Abstract: A plenoptic camera and associated method is provided. The camera has an array of sensors for generating digital images. The images have associated audio signals. The array of sensors are configured to capture digital images associated with a default spatial coordinate and are also configured to receive control input from a processor to change focus from said default spatial coordinate to a new spatial coordinate based on occurrence of an event at said new spatial coordinate.

Abstract: A method for refocusing, on at least one common point of interest, the rendering of one set of plenoptic video data provided by one plenoptic device belonging to a set of plenoptic devices capturing simultaneously a same scene. According to the present disclosure, said method comprises: obtaining (21) a common 3D reference system used for spatially locating said plenoptic device that has provided said set of plenoptic video data and at least one other device of said set of plenoptic devices, from said at least one common point of interest, determining (22) common refocusing plane parameters in said common 3D reference system, refocusing (23) the rendering of said set of plenoptic video data by converting (231) said common refocusing plane parameters into a rendering refocusing plane of a 3D reference system associated with said plenoptic device.

Abstract: A method for refocusing, on at least one common point of interest, the rendering of one set of plenoptic video data provided by one plenoptic device belonging to a set of plenoptic devices capturing simultaneously a same scene. According to the present disclosure, said method comprises: obtaining (21) a common 3D reference system used for spatially locating said plenoptic device that has provided said set of plenoptic video data and at least one other device of said set of plenoptic devices, from said at least one common point of interest, determining (22) common refocusing plane parameters in said common 3D reference system, refocusing (23) the rendering of said set of plenoptic video data by converting (231) said common refocusing plane parameters into a rendering refocusing plane of a 3D reference system associated with said plenoptic device.

Abstract: A method and system is provided for refocusing images captured by a plenoptic camera. In one embodiment the plenoptic camera is in processing with an audio capture device. The method comprises the steps of determining direction of a dominant audio source associated with an image; creating an audio zoom by filtering out all other audio signals except those associated with said dominant audio source; and performing automatic refocusing of said image based on said created audio zoom.

Abstract: A method for generating a user interface presenting a plurality of temporally synchronized video for a display device is disclosed. The user interface comprises a plurality of video graphical units be to feed with videos. The method comprises obtaining a value representative of video quality from each video of the plurality of videos; and selecting videos with the highest values representative of video quality among the plurality of videos for display in each of the video units. According to other characteristics, videos are selected according to a value representative of video contributor fame or to a value representative of video similarity with videos already displayed. The method also relates to a device, to a graphics processing unit and to computer-readable medium for implementing the method for generating a user interface in any of its variants.

Abstract: A plenoptic camera and associated method is provided. The camera has an array of sensors for generating digital images. The images have associated audio signals. The array of sensors are configured to capture digital images associated with a default spatial coordinate and are also configured to receive control input from a processor to change focus from said default spatial coordinate to a new spatial coordinate based on occurrence of an event at said new spatial coordinate.

Abstract: A method for capturing a video in a communal acquisition is disclosed. The method proposes to generate a feedback in at least one device of a plurality of devices capturing a same scene, wherein the feedback indicates, for instance to the person being shot in the scene, that the capturing device generating the feedback is currently capturing a video satisfying at least one video editing rule. The feedback, being for instance a light on a capturing device, allows the person being shot to focus attention to that device, currently capturing a video satisfying to at least one video editing rule, resulting in a better quality video captured by that device.

Abstract: A method for retrieving a media file from a media rendering device with an initial set of media files stored in the device. Each media file has attributed feature values stored in the device and is associated to a graphical element displayed on a display. The position of each graphical element on the display depends on a multitude of the feature values of the associated media file.

Abstract: A method for retrieving a media file from a media rendering device with an initial set of media files stored in the device. Each media file has attributed feature values stored in the device and is associated to a graphical element displayed on a display. The position of each graphical element on the display depends on a multitude of the feature values of the associated media file.

Abstract: Communication method between a primary network (110) and a secondary network (24), the secondary network comprising a plurality of remote stations (210 to 230) and having transmission capacities lower than the transmission capacities of the primary network, a base station (20) enabling data transmissions between the primary and secondary networks. In order to guarantee a quality of service, the method comprises: a creation of at least one virtual wireless channel (21 to 23), associated with the secondary network with configurable channel parameters, and a routing of the data that transits by said base station to be transmitted to the secondary network according to the virtual channel or channels created. each virtual channel enabling a point-to-point link between the base station and a station of said plurality.

Abstract: The inventions concerns a network data storage system comprising a storage unit, at least one network client and an intermediate network switch. The storage unit contains at least two data storage servers each comprises a local storage component containing digital file segments of at least one digital file and is adapted to execute a local digital file management method organizing the physical location of the digital file segments. Each data storage server is adapted to communicate with the other data storage servers and to execute a distributed digital file management method. The distributed digital file management method maintains a record of operations and communicates internally with the other data storage servers to obtain information concerning the digital file segments contained on the other data storage servers and an overview of all information concerning all digital files stored on the storage unit.