公开(公告)号：US20250008098A1

公开(公告)日：2025-01-02

申请号：US18829738

申请日：2024-09-10

Applicant: CANON KABUSHIKI KAISHA

Inventor： Naël OUEDRAOGO ,  Franck DENOUAL

IPC: H04N19/117 ,  H04N19/176 ,  H04N19/46 ,  H04N19/70

Abstract: An encoding method comprising the encoding of information allowing the decoder to infer the splitting of CTBs located at the right, respectively the bottom of a subpicture, which width, respectively height, is not a multiple of the size of the CTBs, when the subpicture is not located at the right, respectively the bottom, of the image. Corresponding decoding methods for the generated bitstream are also proposed.

公开(公告)号：US20240040170A1

公开(公告)日：2024-02-01

申请号：US18364229

申请日：2023-08-02

Applicant: CANON KABUSHIKI KAISHA

Inventor： Franck DENOUAL ,  Frédéric MAZE ,  Naël OUEDRAOGO

IPC: H04N21/2343 ,  H04N21/235

CPC classification number: H04N21/23439 ,  H04N21/2358

Abstract: A method for encapsulating encoded timed media data into at least a first and a second track belonging to one same group of tracks, said media data corresponding to one or more video sequences made up of full frames. The method includes for at least first or second track providing descriptive information about the spatial relationship of a first spatial part of one frame encapsulated in the first track. A second spatial part of said frame encapsulated in the second track, wherein said descriptive information, shared by the tracks belonging to a same group of tracks, indicates whether the region, covered by both the first and the second spatial parts, forms a full frame or not.

公开(公告)号：US20220408166A1

公开(公告)日：2022-12-22

申请号：US17822618

申请日：2022-08-26

Applicant: CANON KABUSHIKI KAISHA

Inventor： Frédéric MAZE ,  Naël OUEDRAOGO ,  Franck DENOUAL ,  Jonathan TAQUET ,  Jean LE FEUVRE

IPC: H04N21/845 ,  H04N21/81 ,  H04N21/854

Abstract: There are provided a device and a method for generating timed media data, the timed media data comprising samples, the method comprising: obtaining samples of the time media data; creating tracks each comprising at least one of the obtained samples; and generating a presentation file comprising descriptive metadata associated with the created tracks, wherein the descriptive metadata comprise at least one track group box describing at least one group of created tracks, all the tracks belonging to a same group sharing properties, wherein a list of existing groups of tracks is declared in one single location in the presentation file, and wherein the properties shared by the tracks of a group of the list are declared at the same single location in the presentation file.

公开(公告)号：US20220400288A1

公开(公告)日：2022-12-15

申请号：US17820697

申请日：2022-08-18

Applicant: CANON KABUSHIKI KAISHA

Inventor： Franck DENOUAL ,  Frédéric MAZE ,  Jean LE FEUVRE ,  Cyril CONCOLATO

IPC: H04N19/70 ,  H04N21/4728 ,  H04N21/845 ,  H04N21/854 ,  H04N19/17 ,  H04N19/46 ,  H04N21/81 ,  H04N19/105

Abstract: Methods of encapsulating a bitstream include generating reference information to enable image items identifying image portions of a bit stream to be referenced to corresponding description information. The resulting encapsulated file may also include information identifying a timed portion of the data stream corresponding to a video sequence. Description information may include spatial parameters, such as position and width and height of sub-parts of an overall image, and/or display parameters such as colour display, pixel aspect ratio, and clean aperture parameters.

公开(公告)号：US20220337922A1

公开(公告)日：2022-10-20

申请号：US17721859

申请日：2022-04-15

Applicant: CANON KABUSHIKI KAISHA

Inventor： Franck DENOUAL ,  Frédéric MAZE ,  Naël OUEDRAOGO ,  Hervé RUELLAN

IPC: H04N21/854 ,  H04N21/845 ,  H04N21/235 ,  H04N19/176 ,  H04N19/70

Abstract: A method for encapsulating media data into an ISO Base Media File Format (ISOBMFF) standard compliant file, the media data comprising a sequence of samples, including obtaining at least one sample of the sequence, generating ISOBMFF structure data indexing the at least one obtained sample, compressing the at least one obtained sample, and embedding the generated ISOBMFF structure data and the compressed at least one sample within the ISOBMFF compliant file.

公开(公告)号：US20220245190A1

公开(公告)日：2022-08-04

申请号：US17620627

申请日：2020-06-10

Applicant: CANON KABUSHIKI KAISHA

Inventor： Frédéric MAZE ,  Franck DENOUAL

IPC: G06F16/55 ,  G06F16/51

Abstract: A method of encapsulation media data in a file, wherein the method comprises: encoding a set of reference images; generating a set of image items to describe the set of reference images; generating an image item describing a derived image corresponding to a panorama based on the set of reference images; generating an association information that associates the image item describing the derived image with the set of image items; generating a parameter data structure containing parameters of the panorama, the parameter data structure being associated with the image item describing the derived image; and embedding the set of image items, the image item describing the derived image, and the association information in the file.

公开(公告)号：US20220167025A1

公开(公告)日：2022-05-26

申请号：US17433963

申请日：2020-03-02

Applicant: CANON KABUSHIKI KAISHA

Inventor： Franck DENOUAL ,  Frédéric MAZE ,  Naël OUEDRAOGO

IPC: H04N21/235 ,  H04N21/845 ,  H04N21/854 ,  H04N21/435

Abstract: A method for receiving encapsulated media data provided by a server, the encapsulated media data comprising metadata and data associated with the metadata, the metadata being descriptive of the associated data, the method being carried out by the client and obtaining, from the server, metadata associated with actual data; and in response to obtaining the metadata, requesting a portion of the actual data associated with the obtained metadata, wherein the actual data are requested independently from all the metadata with which they are associated.

公开(公告)号：US20220014827A1

公开(公告)日：2022-01-13

申请号：US17291863

申请日：2019-11-22

Applicant: CANON KABUSHIKI KAISHA

Inventor： Franck DENOUAL ,  Naël OUEDRAOGO ,  Frédéric MAZE ,  Jean LE FEUVRE

IPC: H04N21/845 ,  H04N21/84 ,  H04N21/235

Abstract: The invention relates to a method and device for encapsulating media data into a media file and parsing a media file. The method comprising according to one of its aspects:including, in the media file, a first track comprising media samples, each media sample contains a set of one or more NAL units; including, in the media file, a second track comprising an extractor, the extractor is a structure referencing a data entity in a media sample contained in the first track; and including, in the extractor, a copy mode attribute that identifies, in the media sample, the referenced data entity relatively to one or more NAL units contained in the media sample.

公开(公告)号：US20220007087A1

公开(公告)日：2022-01-06

申请号：US17479890

申请日：2021-09-20

Applicant: CANON KABUSHIKI KAISHA

Inventor： Franck DENOUAL ,  Frédéric MAZE

IPC: H04N21/845 ,  H04N19/70 ,  H04N21/2343 ,  H04N21/854 ,  H04N21/235

Abstract: The present invention concerns a method for generating media files from video sequences, the method comprising by a server: obtaining from the video sequences, video data composed of a plurality of samples; generating a video track based on the obtained video data, each video track comprises samples of a video sequence, and the video track is associated with descriptive metadata, the descriptive metadata comprises: a spatial information related to one or more samples of the associated video track; and a composition information for organizing generated video tracks to get a full picture when displayed by a client; and generating media files including the generated video tracks.

公开(公告)号：US20210377581A1

公开(公告)日：2021-12-02

申请号：US17255374

申请日：2019-06-20

Applicant: CANON KABUSHIKI KAISHA

Inventor： Franck DENOUAL ,  Frédéric MAZE ,  Naël OUEDRAOGO

IPC: H04N21/2343 ,  H04N21/235

Abstract: A method for encapsulating encoded timed media data into at least a first and a second track belonging to one same group of tracks, said media data corresponding to one or more video sequences made up of full frames. The method includes for at least first or second track providing descriptive information about the spatial relationship of a first spatial part of one frame encapsulated in the first track. A second spatial part of said frame encapsulated in the second track, wherein said descriptive information, shared by the tracks belonging to a same group of tracks, indicates whether the region, covered by both the first and the second spatial parts, forms a full frame or not.