公开(公告)号：US20240369969A1

公开(公告)日：2024-11-07

申请号：US18442922

申请日：2024-02-15

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Sang Hoon CHEON ,  Won-Ok KWON ,  Joong-Ki PARK

IPC: G03H1/08 ,  G06T7/55 ,  G06T17/00

Abstract: Disclosed is a hologram image generating system, which includes a preprocessor that receives point cloud data to convert the received point cloud data into depth map image data, a depth map hologram processor that generates depth map hologram data based on the depth map image data, and a hologram generating device that generates a hologram image based on the depth map hologram data.

公开(公告)号：US20220397859A1

公开(公告)日：2022-12-15

申请号：US17591453

申请日：2022-02-02

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Kihong CHOI ,  Keehoon HONG ,  Joong-Ki PARK

IPC: G03H1/04

Abstract: The holographic lens system includes a geometric phase lens located on plane of an aperture, a front lens and a rear lens respectively located at the front and behind of the aperture, a polarizer located between the geometric phase lens and the front lens, and an image sensor that is located behind the rear lens and acquires an interference fringe generated by the geometric phase lens.

公开(公告)号：US20180188686A1

公开(公告)日：2018-07-05

申请号：US15855997

申请日：2017-12-27

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Joong-Ki PARK

IPC: G03H1/08

CPC classification number: G03H1/0808 ,  G03H1/0866 ,  G03H2001/0825 ,  G03H2226/02

Abstract: A method and an apparatus for hologram resolution transformation are disclosed. A number of pixels for zero padding for an original hologram of a first resolution is calculated based on a wavelength and an imaging distance, and the zero padding is performed on the original hologram of the first resolution based on the number of pixels to obtain the original hologram of a second resolution. Forward propagation is performed on the original hologram of the second resolution by a reconstruction distance to reconstruct a hologram image.

公开(公告)号：US20140211044A1

公开(公告)日：2014-07-31

申请号：US14152977

申请日：2014-01-10

Applicant: Electronics and Telecommunications Research Institute

Inventor： Chung-ho LEE ,  Joong-Ki PARK ,  YOUNGHO SUH ,  Youngsu CHO ,  Sung Woong SHIN ,  Jong-Hyun PARK ,  Chae Kyu KIM

IPC: H04N5/232

CPC classification number: H04N5/23229 ,  G06Q30/02

Abstract: A system for generating crowdsourcing-based image knowledge content, includes an image provision unit configured to provide image data; and an image crowdsourcing unit configured to generate, store, or manage image knowledge in order to provide an image-base knowledge service. Further, the system includes an image acquisition and processing unit configured to connect the image provision unit and the image crowdsourcing unit and actively or automatically provide a crowdsourcing technique.

Abstract translation: 一种用于产生基于众包的图像知识内容的系统，包括：图像提供单元，被配置为提供图像数据; 以及被配置为生成，存储或管理图像知识以便提供图像基础知识服务的图像众包单元。 此外，该系统包括图像获取和处理单元，其被配置为连接图像提供单元和图像众包单元，并且主动或自动地提供众包技术。

公开(公告)号：US20210141339A1

公开(公告)日：2021-05-13

申请号：US17089977

申请日：2020-11-05

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Sang Hoon CHEON ,  HANJU YEOM ,  Joong-Ki PARK ,  Kwan-Jung OH ,  Keehoon HONG

IPC: G03H1/26

Abstract: Provided is a hologram generation method including receiving a distribution of a polygon and generating an angular spectrum based on the distribution of the polygon, determining whether a rotation angle of the polygon is included in a first section determined based on a maximum diffraction angle of a spatial light modulator, and recording the angular spectrum if it is determined that the rotation angle is included in the first section.