公开(公告)号：US11601617B2

公开(公告)日：2023-03-07

申请号：US16961735

申请日：2019-07-26

Applicant: FONDATION B-COM

Inventor： Jean-Yves Aubie ,  Wassim Hamidouche ,  Patrick Dumenil ,  Glenn Herrou

IPC: H04N7/01

Abstract: 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.

公开(公告)号：US12022097B2

公开(公告)日：2024-06-25

申请号：US17427526

申请日：2020-01-24

Applicant: FONDATION B-COM

Inventor： Glenn Herrou ,  Wassim Hamidouche ,  Luce Morin ,  Jean-Yves Aubie

IPC: H04N19/33 ,  H04N19/105 ,  H04N19/119 ,  H04N19/132 ,  H04N19/139 ,  H04N19/147 ,  H04N19/176

CPC classification number: H04N19/33 ,  H04N19/105 ,  H04N19/119 ,  H04N19/132 ,  H04N19/139 ,  H04N19/147 ,  H04N19/176

Abstract: 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.

公开(公告)号：US11943458B2

公开(公告)日：2024-03-26

申请号：US17848665

申请日：2022-06-24

Applicant: FONDATION B-COM

Inventor： Charles Bonnineau ,  Wassim Hamidouche ,  Jean-Yves Aubie

IPC: H04N19/30 ,  H04N19/13 ,  H04N19/132 ,  H04N19/186 ,  H04N19/42

CPC classification number: H04N19/30 ,  H04N19/13 ,  H04N19/132 ,  H04N19/186 ,  H04N19/42

Abstract: The invention relates to a method for decoding an image based on a base layer (Cbase) and enhancement information (Iam), said method comprising the following steps:



decoding said base layer (Cbase) in order to obtain at least one base component (Ydecbase, Udecbase, Vdecbase),
oversampling the at least one base component (Ydecbase, Udecbase, Vdecbase) in order to obtain at least one oversampled component (Ysurech, Usurech, Vsurech),
decoding the enhancement information (Iam) by means of a part (B) at least of artificial neural network in order to obtain enhancement values (Vam),
reconstructing the image based on the at least one oversampled component (Ysurech, Usurech, Vsurech) and the enhancement values (Vam).




The invention also relates to associated encoding method, electronic decoding device, electronic encoding device and signal.

公开(公告)号：US11202032B2

公开(公告)日：2021-12-14

申请号：US17127115

申请日：2020-12-18

Applicant: FONDATION B-COM

Inventor： Foteini Tania Pouli ,  Cambodge Bist ,  Jean-Yves Aubie

IPC: G06T5/00 ,  H04N9/77 ,  H04N7/01

Abstract: 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: —determining a first intermediate luminance component from the input luminance component and an exponent, —obtaining a mapping profile allowing for mapping a luminance component based on the input luminance component into the output luminance component, —determining a second intermediate luminance component from the input luminance component and the obtained mapping profile, —determining the output luminance component from the first and second intermediate luminance components; and converting the input image into the output image.