Thomson Licensing

Interdigital Vc Holdings, Inc.

Interdigital Ce Patent Holdings

Interdigital Ce Patent Holdings, Sas

Interdigital Madison Patent Holdings, Sas

Corinne Poree

Jurgen Stauder

Patrick Morvan

Philippe Bordes

Jonathan Kervec

Serge Defrance

Emmanuel Jolly

Jürgen Stauder

Sylvain Lelievre

Anita Orhand

Joël Sirot

According to an embodiment, a first device may receive from a second device a message comprising an authentication element and credentials associating the second device with a user identifier. The first device may obtain a set of features based on data captured by a sensor of the first device when a user is near the sensor. The first device may associate the second device with the first device on a condition that is it determined by the first device that the authentication element is verified based on a verification element, that the credentials correspond to initial credentials associating the second device with the user identifier, and that the set of features matches an initial set of features, wherein the verification element, the initial credentials and the initial set of features may have been initially associated together in the first device.

Method and apparatus for associating a first device with a second device

An aspect of present principles is directed to methods and systems for gamut mapping colors from a either a source color gamut or a content color gamut towards a target color gamut. A source hue of the source specific colors and a source hue of the content specific colors is changed towards a target hue of the corresponding target specific colors. Color gamut mapping is performed for the source colors of either the whole source color gamut or the content color gamut towards the target color gamut based on the mapped specific colors. The specific colors are selected from primary colors, secondary colors, a group of primary colors and secondary colors.

Hue changing color gamut mapping

A method for generating a fourth color transform is disclosed, wherein said fourth color transform transforms an original picture into a target color graded version of said original picture. The method comprises obtaining a first color transform wherein said first (reference) color transform transforms said original picture into a first color graded version of said original picture; obtaining a second (reference) color transform wherein said second color transform transforms said original picture to a second color graded version of said original picture; obtaining a third (exemplary) color transform wherein said third color transform transforms said original picture to said target color graded version of said original picture; obtaining at least one interpolating parameter wherein the fourth color transform is close to or representative of the third color transform (exemplary) and the fourth color transform is obtained by applying a parametric function determined by the at least one interpolating parameter to the first color transform and second color transform. In a variant, the at least one interpolating parameter is obtained by minimizing an error between the third color transform and the fourth color transform.

Color grading interpolation methods and devices

Said method comprises a first cusp-oriented lightness-mapping step and a second lightness-mapping step in which a source color (N) is mapped into a mapped color (N&#x2033;) having the same hue (H&#x2033;=H) and the same chroma (C&#x2033;=C) as the source color, where the second mapping step is defined such as to bring more colors in a target color gamut and more colors closer to the boundary of this target gamut.

Lightness mapping in two steps

The method comprises the steps of, successively for each image following a preceding image The application of this method to color clustering allows the iterative update of the colors clusters with limited computer resources.

Method of sampling colors of images of a video sequence, and application to color clustering

The method comprises the steps of: &#x2014;determining, for each color of the second version, corresponding scalar value(s) of one or two variable(s) such that, if said scalar value(s) is applied to the color gamut mapping model, a mapped color is obtained having a minimal distance to the corresponding color of the first version (i.e. enhanced) to the color of second version, &#x2014;encoding the determined scalar value(s) into an enhancement layer.

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Rennes, France

Corinne Poree