Thomson Licensing

Interdigital Ce Patent Holdings

Interdigital Madison Patent Holdings, Sas

Claire-Helene Demarty

Lionel Oisel

Gwenaelle Marquant

Quang Khanh Ngoc Duong

Joel Sirot

Edouard Francois

Laurent Blonde

Louis Chevallier

Christel Chamaret

Patrick Perez

Frederic Lefebvre

Ayoub Massoudi

Cedric Penet

Franck Botta

Zoubida Ameur

Milos Radosavljevic

Patrick Gallardo

A method and device for reducing power consumption of display devices proposes to reduce the total amount of light emitted in a perceptually indistinguishable manner based on the on the human visual sensitivity at the position of a pixel. The visibility of the processing can be made to remain provably below threshold, whereas other techniques may not be able to provide such proof. This is achieved by determining a minimum detectable modulation or a corresponding just-noticeable difference based on frequency intensity information for a pixel representative of how much there is of a set of frequencies at the pixel and a contrast sensitivity function representative of a model of human vision that predicts which contrasts at which frequencies are visible to the human eye. Pixel values may be reduced based on this minimum detectable modulation or just-noticeable difference. The contrast sensitivity function may be given by Barten's model and the frequency intensity information may be based on a hierarchical map built using a discrete wavelet transform or a continuous wavelet transform.

Pixel modification to reduce energy consumption of a display device

The present disclosure relates to methods, apparatus or systems for inciting a user consuming an immersive content to rotate the immersive rendering device in the direction of a region of interest. According to the present principles, an object representative of a character is inserted in the field of view of the user. The character is computed in a way it looks in the direction of the region of interest from its location in the immersive content. In addition, face and body attitude of the character may reflect an emotion that is associated with the region of interest, for example scare, happiness or interest. The user will naturally be incited at looking in the direction indicated by the inserted character.

Method and apparatus for inciting a viewer to rotate toward a reference direction when consuming an immersive content item

A method and an apparatus for determining an orientation of a video are suggested. The method comprises the steps of: estimating a motion of the video; extracting translation-based parameters from the estimated motion of the video; and computing at least one feature giving the evolution of the horizontal translation over time against the evolution of the vertical translation according to the translation based parameters, the feature being used for determining the orientation of the video.

Method and apparatus for determining an orientation of a video

The invention discloses a method for setting a watching level to an audiovisual content which some frames are already annotated with watching levels. Upon the reception of the audiovisual content, frames annotated with watching levels are extracted and displayed in a single view. One of the displayed frames is selected by the user, the watching level of the selected frame being set as watching level to the audiovisual content.

Method for setting a watching level for an audiovisual content

The invention relates to a method for creating a new roundup of an audiovisual document previously recorded in a device. The document contains two parts, one being the roundup and the other composed of a plurality of reports. The roundup is itself divided into a plurality of parts. The device first searches for the associations between the roundup parts and the reports, and detects the reports that are not associated with roundup parts. Then, summaries are created for the reports not associated with the roundup, and incorporated into the initial roundup to create a new roundup. In this manner, the user can easily select any report from the roundup part associated with this report. The invention also relates to the receiver suitable for implementing the method.

Method for creating a new summary of an audiovisual document that already includes a summary and reports and a receiver that can implement said method

The invention concerns a method for computing a fingerprint of a video sequence. The method comprises the steps of&#x2014;Computation of a visual digest for each frame of the video, &#x2014;Computation of the distance between the visual digest of each frame of the video in order to detect shots, &#x2014;Detection, for each detected shot of the video, of a frame, called stable frame, having the smallest content variation of the shot, &#x2014;Calculation of a local fingerprint for said stable frame.

Method for computing a fingerprint of a video sequence

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Montreuil le Gast, France

Claire-Helene Demarty