公开(公告)号：US10812814B2

公开(公告)日：2020-10-20

申请号：US16092962

申请日：2017-06-19

Applicant: B<>COM

Inventor： Joel Jung ,  Felix Henry ,  Charlene Mouton

IPC: H04N19/196 ,  H04N19/11 ,  H04N19/103 ,  H04N19/176 ,  H04N19/593 ,  H04N19/14

Abstract: A method for decoding a coded data stream representative of at least one image, the image being divided into blocks, a set of at least two prediction modes being available for predicting a current block. The method includes: obtaining at least two categories of prediction modes from the set; eliminating at least one category in accordance with at least one first predetermined elimination criterion; updating the categories not eliminated by deleting prediction modes that are common with the at least one eliminated category; and decoding, from the data stream, an information identifying for the current block a prediction mode among the modes of the updated categories.

公开(公告)号：US20170353722A1

公开(公告)日：2017-12-07

申请号：US15538970

申请日：2015-12-14

Applicant: B<>COM ,  Orange

Inventor： Joel Jung

IPC: H04N19/119 ,  H04N19/139 ,  H04N19/147 ,  H04N19/176

CPC classification number: H04N19/119 ,  H04N19/139 ,  H04N19/147 ,  H04N19/176 ,  H04N19/70

Abstract: A method for encoding a digital image, which is divided into a plurality of blocks of pixels processed in a defined order. The method includes the following acts for a current block: a) obtaining a basic motion vector of the current block with respect to a reference image previously decoded; b) obtaining a partitioning into sub-blocks of the area pointed to in the reference image by the basic motion vector and applying the partitioning obtained to the current block; and c) scanning the sub-blocks of the current block according to a predetermined scanning order and encoding the sub-blocks scanned. The encoding includes modifying the partitioning of the current block into sub-blocks according to predetermined rules, coding the sub-blocks of the modified partitioning comprising coding reporting information on the modification of the partitioning, and validating the modified partitioning by applying a rate-distortion criterion to the coded sub-blocks of the modified partitioning.

公开(公告)号：US10958901B2

公开(公告)日：2021-03-23

申请号：US16300691

申请日：2017-04-27

Applicant: B-COM

Inventor： Felix Henry ,  Joel Jung ,  Charlene Mouton

IPC: H04N19/107 ,  H04N19/176 ,  H04N19/11 ,  H04N19/119 ,  H04N19/184 ,  G06K9/62

Abstract: A method of decoding an encoded data stream representing at least one image subdivided into blocks. The method includes, for a current block of the image, and for each of at least two prediction modes available to predict the current block, obtaining a predictive block associated with the available mode; building a list having at least one of the available modes; for at least one mode included in the list, called a current mode, determining a distance measurement between the predictive block associated with the current mode and the other predictive blocks associated with the other available modes and obtained for the current block; modifying the list modified as a function of the determined measurement; decoding information identifying, for the current block, a prediction mode from the modified list from the encoded data stream; and rebuilding the current block from the predictive block associated with the identified prediction mode.

公开(公告)号：US20190208196A1

公开(公告)日：2019-07-04

申请号：US16300691

申请日：2017-04-27

Applicant: B-COM

Inventor： Felix Henry ,  Joel Jung ,  Charlene Mouton

IPC: H04N19/107 ,  H04N19/119 ,  H04N19/176 ,  H04N19/184 ,  G06K9/62

CPC classification number: H04N19/107 ,  G06K9/6215 ,  H04N19/11 ,  H04N19/119 ,  H04N19/176 ,  H04N19/184

Abstract: A method of decoding an encoded data stream representing at least one image subdivided into blocks. The method includes, for a current block of the image, and for each of at least two prediction modes available to predict the current block, obtaining a predictive block associated with the available mode; building a list having at least one of the available modes; for at least one mode included in the list, called a current mode, determining a distance measurement between the predictive block associated with the current mode and the other predictive blocks associated with the other available modes and obtained for the current block; modifying the list modified as a function of the determined measurement; decoding information identifying, for the current block, a prediction mode from the modified list from the encoded data stream; and rebuilding the current block from the predictive block associated with the identified prediction mode.

公开(公告)号：US20190174138A1

公开(公告)日：2019-06-06

申请号：US16092962

申请日：2017-06-19

Applicant: B<>COM

Inventor： Joel Jung ,  Felix Henry ,  Charlene Mouton

IPC: H04N19/196 ,  H04N19/103 ,  H04N19/14 ,  H04N19/593

CPC classification number: H04N19/197 ,  H04N19/103 ,  H04N19/11 ,  H04N19/14 ,  H04N19/176 ,  H04N19/593

Abstract: A method for decoding a coded data stream representative of at least one image, the image being divided into blocks, a set of at least two prediction modes being available for predicting a current block. The method includes: obtaining at least two categories of prediction modes from the set; eliminating at least one category in accordance with at least one first predetermined elimination criterion; updating the categories not eliminated by deleting prediction modes that are common with the at least one eliminated category; and decoding, from the data stream, an information identifying for the current block a prediction mode among the modes of the updated categories.