公开(公告)号：US20250097460A1

公开(公告)日：2025-03-20

申请号：US18884274

申请日：2024-09-13

Applicant: Electronics and Telecommunications Research Institute

Inventor： Kwan-Jung OH ,  Gwangsoon LEE ,  Hong-Chang SHIN ,  Jun-Young JEONG

IPC: H04N19/597 ,  H04N19/46 ,  H04N19/59

Abstract: An image encoding method according to the present disclosure may include generating an atlas based on a plurality of viewpoint images; encoding the atlas; and encoding metadata for the atlas. In this case, the metadata may include data of a patch packed in the atlas, and the patch data may include type information of an entity corresponding to a patch.

公开(公告)号：US20240251086A1

公开(公告)日：2024-07-25

申请号：US18628462

申请日：2024-04-05

Applicant: Electronics and Telecommunications Research Institute

Inventor： Kwan-Jung OH ,  Gwangsoon Lee ,  Euee S. JANG

IPC: H04N19/136 ,  H04N19/177

CPC classification number: H04N19/136 ,  H04N19/177

Abstract: A method of encoding an immersive video according to the present disclosure includes determining whether an input image is a first type, converting the input image into the first type when the input image is a second type different from the first type, encoding a converted image, and generating metadata for the encoded image.

公开(公告)号：US20220229397A1

公开(公告)日：2022-07-21

申请号：US17578314

申请日：2022-01-18

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Kwan-Jung OH

IPC: G03H1/04 ,  G03H1/22 ,  G03H1/08

Abstract: Disclosed are a method and an apparatus for processing phase information. When receiving a phase image including phase information, a processing device performs phase remapping of mapping the phase image to a predetermined range. The predetermined range is a range of a first phase value to a second phase value having a period of 2π, and a difference between the first phase value and the second phase value is 2π.

公开(公告)号：US20210149339A1

公开(公告)日：2021-05-20

申请号：US16950481

申请日：2020-11-17

Applicant: Electronics and Telecommunications Research Institute

Inventor： Han-Ju YEOM ,  Sanghoon CHEON ,  Joongki PARK ,  Kwan-Jung OH ,  Keehoon HONG

IPC: G03H1/08 ,  G03H1/16 ,  G03H1/22

Abstract: An apparatus for synthesizing ultra-high resolution computer generated holograms based on mesh propagates a plurality of 3D meshes constituting the 3D model to a hologram plane, divides an entire angular spectrum area corresponding to a set maximum diffraction angle into a plurality of partial angular spectral areas, sequentially calculates and accumulates angular spectrums of the plurality of 3D meshes for each of the plurality of partial angular spectrum areas, and generates holograms for the 3D model from the angular spectrums accumulated for each of the plurality of partial angular spectrum areas.