中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

16 records (took 0.017 seconds)

    Method and apparatus for encoding a point cloud representing three-dimensional objects
    1.
    发明授权
    Method and apparatus for encoding a point cloud representing three-dimensional objects 有权

    公开(公告)号：US11095920B2

    公开(公告)日：2021-08-17

    申请号：US16769807

    申请日：2018-11-29

    Applicant: InterDigital CE Patent Holdings, SAS

    Inventor： Julien Fleureau ,  Bertrand Chupeau ,  Franck Thudor

    IPC: H04N19/597 ,  G06T9/00

    Abstract: A colored 3D scene is encoded as one or two patch atlas images. Points of the 3D scene belonging a part of the space defined according to a truncated sphere center on a point of view and visible from this point of view are iteratively projected onto projection maps. At each iteration the projected part is removed from the 3D scene and the truncated sphere defining the next part of the scene to be projected is rotated. Once the entirety of the 3D scene is projected on a set of projection maps, pictures are determined within these maps. A picture, also called patch, is a cluster of depth consistent connected pixels. Patches are packed in a depth and a color atlas associated with data comprising an information relative to the rotation of the truncated sphere, so, a decoder can retrieve the projection mapping and proceed to the inverse projection.

    METHODS AND APPARATUSES FOR ENCODING/DECODING A VOLUMETRIC CONTENT
    2.
    发明申请
    METHODS AND APPARATUSES FOR ENCODING/DECODING A VOLUMETRIC CONTENT 有权

    公开(公告)号：US20250039445A1

    公开(公告)日：2025-01-30

    申请号：US18705059

    申请日：2022-10-18

    Applicant: InterDigital CE Patent Holdings, SAS

    Inventor： Didier Doyen ,  Amandine Chauveau ,  Vincent Brac De La Perriere ,  Bertrand Chupeau

    IPC: H04N19/597 ,  G03H1/04

    Abstract: A method and an apparatus for reconstructing a Computer-Generated Hologram from a multiple plane image are provided. Reconstructing the Computer-Generated Hologram comprises decoding data representative of at least one patch of at least one layer of the multiple plane image, the data comprising a first location for placing the patch in a first image of the multiple plane image, the first location being used for placing reconstructed content of the patch in a 3D scene, and determining for the at least one patch a second location for placing the patch in a second image, the second image being intended to be used for determining the Computer-Generated Hologram.

    METHOD AND APPARATUS FOR LOOP-PLAYING VIDEO CONTENT
    3.
    发明申请
    METHOD AND APPARATUS FOR LOOP-PLAYING VIDEO CONTENT 有权

    公开(公告)号：US20210400334A1

    公开(公告)日：2021-12-23

    申请号：US17297039

    申请日：2019-11-22

    Applicant: InterDigital CE Patent Holdings, SAS

    Inventor： Franck Thudor ,  Bertrand Chupeau ,  Renaud Dore

    IPC: H04N21/433 ,  H04N21/44

    Abstract: Methods and devices are provided to play back a video content item comprising loop sequences. The player manages two or three playing modes and switch between first-in first-out video buffer and circular video buffer with a size adapted to the loop sequences for which the player is in loop mode. A start point and an end point are obtained for each loop sequence of the video. In an embodiment, a code is associated with frames of the video to indicate to which loop(s) a frame belongs to.

    METHODS AND DEVICES FOR PROGRESSIVE ENCODING AND DECODING OF MULTIPLANE IMAGES
    4.
    发明申请
    METHODS AND DEVICES FOR PROGRESSIVE ENCODING AND DECODING OF MULTIPLANE IMAGES 有权

    公开(公告)号：US20250056016A1

    公开(公告)日：2025-02-13

    申请号：US18719969

    申请日：2022-12-07

    Applicant: InterDigital CE Patent Holdings, SAS

    Inventor： Julien Fleureau ,  Bertrand Chupeau ,  Renaud Dore ,  Franck Thudor

    IPC: H04N19/172 ,  H04N19/119 ,  H04N19/136 ,  H04N19/46

    Abstract: Methods and devices for encoding, decoding and transmitting a three-dimensional scene initially represented as a multiplane image (MPI) are provided. Each layer of the MPI is split into patches based on the transparency component. Patches of a layer are grouped in a tile. The greater the depth of the layer, the greater the identifying number of the tile. When several tiles are packed in an atlas image, the same monotonic (i.e. ascending or descending) function according to depth applies to atlas numbers. At the decoding side, the current viewport to render is initially cleared and each decoded tile is sequentially blended over from the nearest one to the furthest due to the numbering of the set of atlases and tiles. Pixels of a patch under rendering are projected onto pixels of the viewport image according to the depth of the tile comprising the patch and metadata indicating the position of the patch in the layer of the MPI the patch has been clustered from.

    Different atlas packings for volumetric video
    7.
    发明授权
    Different atlas packings for volumetric video 有权

    公开(公告)号：US12212784B2

    公开(公告)日：2025-01-28

    申请号：US17916367

    申请日：2021-04-01

    Applicant: INTERDIGITAL CE PATENT HOLDINGS, SAS

    Inventor： Bertrand Chupeau ,  Renaud Dore ,  Franck Thudor

    IPC: H04N19/70 ,  G06T3/16

    Abstract: Methods, devices and stream are disclosed to encode and decode a scene (such as a point cloud) in the context of a patch-based transmission of a volumetric video content. Attributes of points of the scene are projected onto patches. Every point has a geometry attribute. For other attributes, like transparency of displacement attribute, some points may have no value. According to the present principles, each attribute is encoded in a different atlas with its own layout. This allow to save pixel rate in memory of the renderer.

    VOLUMETRIC VIDEO WITH AUXILIARY PATCHES
    8.
    发明申请
    VOLUMETRIC VIDEO WITH AUXILIARY PATCHES 有权

    公开(公告)号：US20250024076A1

    公开(公告)日：2025-01-16

    申请号：US18804382

    申请日：2024-08-14

    Applicant: INTERDIGITAL CE PATENT HOLDINGS, SAS

    Inventor： Renaud Dore ,  Bertrand Chupeau ,  Franck Thudor ,  Julien Fleureau

    IPC: H04N19/597 ,  G06T9/00 ,  G06T15/08 ,  G06T15/20 ,  H04N21/235 ,  H04N21/2662 ,  H04N21/81

    Abstract: Methods and devices for encoding and decoding data representative of a 3D scene are disclosed. A set of first patches is generated from a first MVD content acquired from a first region of the 3D scene. A patch is a part of one of the views of the MVD content. A set of second patches is generated from a second MVD content acquired from a second region of the 3D scene. An atlas packing first and second patches is generated and associated with metadata indicating, for a patch of the atlas, whether the patch is a first or a second patch At the decoding side, first patches are used for rendering the viewport image and second patches are used for pre-processing or post-processing the viewport image.

    Multiview multiscale methods and apparatus for view synthesis
    10.
    发明授权
    Multiview multiscale methods and apparatus for view synthesis 有权

    公开(公告)号：US12155808B2

    公开(公告)日：2024-11-26

    申请号：US17642084

    申请日：2020-09-10

    Applicant: INTERDIGITAL CE PATENT HOLDINGS, SAS

    Inventor： Bertrand Chupeau ,  Tomas Volker ,  Guillaume Boisson

    IPC: H04N13/111 ,  G06T3/40 ,  G06T7/90 ,  G06V10/44 ,  G06V10/56

    Abstract: The present disclosure relates to method and apparatus for the estimation of an accurate multiplane image from a set of posed images. The accuracy of an MPI representation is measured by the performance of the views generated by it through inverse homography sampling and alpha compositing. A variable number of posed images at a possibly different resolution representative of scenes with arbitrary geometry are used as input of the system. A first level of three modules, possibly trained based on deep learning methods, is built for extracting view and scene features and color scores. Numerous levels of the same three modules may be built and organized in a structure where a level deals with down-scaled version of the posed images.

Patent Agency Ranking