Fondation B Com

Thomson Licensing S.a.

Jean-Yves Aubie

Wassim Hamidouche

Glenn Herrou

Pierre Ruellou

Cambodge Bist

Alain Sorin

Luce Morin

Patrick Dumenil

Foteini Tania Pouli

Charles Bonnineau

Frédéric Plissonneau

Disclosed is a method for encoding data corresponding to a video sequence, into a spatial resolution scalable binary flow, including a base layer and enhancement layer. The method includes, for a frame of the sequence: obtaining, from the frame, a first frame, partitioning the first frame into blocks, each block having a given size, and encoding a block of the first frame to generate the base layer; obtaining, from the frame, a second frame; partitioning the second frame into blocks by inferring the initial size of a block from the size of a corresponding block in the first frame, the block of the second frame having an initial spatial resolution; determining a spatial encoding resolution associated with the block from a set of predetermined spatial resolutions; and coding data representative of the at block, based on the determined spatial encoding resolution, to generate an enhancement layer.

Method and device for coding and decoding data corresponding to a video sequence

The invention relates to a method for decoding an image based on a base layer (C) and enhancement information (I), said method comprising the following steps: The invention also relates to associated encoding method, electronic decoding device, electronic encoding device and signal.

Methods for decoding and encoding an image, associated devices and signal

A method for forming an image sequence that is an output sequence, from an input image sequence, is provided. The input image sequence has an input spatial resolution and an input temporal resolution. The output sequence has an output temporal resolution equal to the input temporal resolution and an output spatial resolution equal to a predetermined fraction 1/N of the input spatial resolution by an integer number N higher than or equal to 2. The method, implemented for a sub-sequence of the input frame sequence that is a current input sub-sequence and including a preset number of images, includes: obtaining a temporal frequency that is an image frequency, associated with the current input sub-sequence; processing the current input sub-sequence to obtain an output sub-sequence; and inserting the output sub-sequence and the associated image frequency into an output container.

Method for forming an output image sequence from an input image sequence, method for reconstructing an input image sequence from an output image sequence, associated devices, server equipment, client equipment and computer programs

A method is described for converting an input image into an output image, the output image including an output luminance component made of elements. The method includes: obtaining an input luminance component from the input image; determining the output luminance component, the respective ranges of the output luminance component element values and input luminance component element values being of different range extension, the determining step including: &#x2014;determining a first intermediate luminance component from the input luminance component and an exponent, &#x2014;obtaining a mapping profile allowing for mapping a luminance component based on the input luminance component into the output luminance component, &#x2014;determining a second intermediate luminance component from the input luminance component and the obtained mapping profile, &#x2014;determining the output luminance component from the first and second intermediate luminance components; and converting the input image into the output image.

Method for converting an image and corresponding device

The process utilizing the inter mode with motion estimation with respect to a reference image and the intra mode, wherein: an exclusion zone which includes the macroblocks which lie even partially in the location of the imagette is defined in the image, the motion estimation of the macroblocks of the image not belonging to the exclusion zone cannot take account of an image block belonging to the exclusion zone in the reference image. Applications relate to the coding of images which is compatible with the inserting of logos or other imagettes specific to the utilizer. They also relate to the real-time coding of images comprising insets.

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Melesse, France

Jean-Yves Aubie