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公开(公告)号：US20140176502A1
公开(公告)日：2014-06-26
申请号：US13952227
申请日：2013-07-26
Applicant: Korea Electronics Technology Institute
Inventor： Young Min KIM , Byoung Ha PARK , Yang Keun AHN , Kwang Mo JUNG
CPC classification number: G06F3/016 , G06F3/011 , G06F3/0304
Abstract: The present invention relates to an image display apparatus and method for displaying a three-dimensional (3D) image capable of interacting with a user, and provides a 3D image display apparatus and method that may interact with a user by reproducing a 3D image, generated by a conventional volume display apparatus, at a position different from a position at which the 3D image is generated, and by modifying and playing the reproduced 3D image based on a motion of the user. Also, the present invention enables the user to realistically interact with the 3D image by stimulating tactile sensation of the user through ultrasound.
Abstract translation: 本发明涉及一种用于显示能够与用户交互的三维（3D）图像的图像显示装置和方法，并且提供可以通过再现3D图像与用户交互的3D图像显示装置和方法，生成 通过传统的体积显示装置，在与生成3D图像的位置不同的位置处，并且通过基于用户的运动修改和播放再现的3D图像。 此外，本发明使得用户能够通过超声波刺激用户的触觉来实际地与3D图像交互。
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公开(公告)号：US20250044738A1
公开(公告)日：2025-02-06
申请号：US18713782
申请日：2021-12-06
Applicant: Korea Electronics Technology Institute
Inventor： Sung Hee HONG , Young Min KIM , Ji Soo HONG
IPC: G03H1/04
Abstract: A holographic printer using a vibration-free mechanical shutter is provided. A holographic printer, according to an embodiment of the present invention, comprises: a light source which emits light; a modulator which modulates the light emitted from the light source to generate a holographic fringe pattern in a hogel unit; a stage on which a holographic recording medium, on which a holographic fringe pattern generated by the modulator is to be recorded in a hogel unit, is placed; a driving part which moves a position of the stage in a hogel unit; and a shutter which periodically exposes, to the holographic recording medium, object light generated by the holographic fringe pattern generated by the modulator, wherein the shutter includes a rotating plate having a slit that exposes the object light by means of the holographic fringe pattern, and a motor rotating the rotating plate. Accordingly, by applying a mechanical shutter having a structure in which vibration does not occur to the holographic printer, it is possible to prevent degradation of hologram recording quality caused by vibration generated during opening/closing of the shutter.
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公开(公告)号：US20240393509A1
公开(公告)日：2024-11-28
申请号：US18343886
申请日：2023-06-29
Applicant: Korea Electronics Technology Institute
Inventor： Ji Soo HONG , Sung Hee HONG , Young Min KIM , Jin Soo JEONG , Yong Hwa KIM , Byoung Hyo LEE , Hyeon Chan OH
Abstract: There is provided a thin optical system for real-world occlusion in an augmented reality display. The optical system according to an embodiment includes: a first DCRA configured to reflect light beams focused on holes; a mask positioned on a light emitting surface of the first DCRA to pass or block the light beams emitted from the first DCRA; and a second DCRA configured to reflect the light beams which are focused on holes after passing through the mask. Accordingly, the optical system can implement real-world occlusion in the unit of pixel while having a thin form factor.
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公开(公告)号：US20230038253A1
公开(公告)日：2023-02-09
申请号：US17781474
申请日：2019-12-06
Applicant: Korea Electronics Technology Institute
Inventor： Ji Soo HONG , Sung Hee HONG , Young Min KIM
Abstract: Provided is a method in which, when configuring an HUD that produces a holographic image at a distance using a holographic optical element (HOE), an HOE capable of correcting aberrations generated by a projection optical system is manufactured and used to improve the quality of an HUD image. A method for manufacturing an HOE for HUD according to an embodiment of the present invention comprises the steps of: measuring aberrations generated by an optical system that projects an image of a display device; recording the measured aberrations in a master HOE; reproducing an aberrated wavefront of the optical system by playing the master HOE on a display plane on which the image of the display device is expressed; and causing an interference of the reproduced aberrated wavefront and a spherical wavefront irradiated from the HUD image plane on which the image of the display device is created, and recording the interference in the HOE. Accordingly, when configuring the HUD producing an image at a distance using the HOE, the quality of the HUD image can be improved by measuring aberrations in the projection optical system, creating a master HOE that reproduces the measured aberrations, and manufacturing a HOE that corrects the aberrations, and correcting aberrations generated in the projection optical system.
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公开(公告)号：US20140133022A1
公开(公告)日：2014-05-15
申请号：US13855367
申请日：2013-04-02
Applicant: KOREA ELECTRONICS TECHNOLOGY INSTITUTE
Inventor： Young Min KIM , Byoung Ha PARK , Yang Keun AHN , Kwang Mo JUNG
IPC: G02B27/22
CPC classification number: G02B27/2214 , Y10T29/49826
Abstract: Provided are a 3D display device and a method of manufacturing the same. The 3D display device includes a curve-shaped display panel displaying an image, and a curve-shaped lenticular lens disposed in front of or behind the display panel. A left-eye image displayed by the display panel is presented to a user's left eye through the lenticular lens, and a right-eye image displayed by the display panel is presented to a user's left eye through the lenticular lens.
Abstract translation: 提供了3D显示装置及其制造方法。 3D显示装置包括显示图像的曲线状显示面板和设置在显示面板前方或后方的曲线状双凸透镜。 由显示面板显示的左眼图像通过双凸透镜呈现给用户的左眼，并且由显示面板显示的右眼图像通过双凸透镜呈现给用户的左眼。
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Patent Agency Ranking
公开(公告)号：US20250029282A1
公开(公告)日：2025-01-23
申请号：US18713730
申请日：2021-12-06
Applicant: Korea Electronics Technology Institute
Inventor： Sung Hee HONG , Young Min KIM , Ji Soo HONG
Abstract: A hologram generation and streaming method and system using multi-PCs are provided. A hologram streaming service system according to an embodiment of the present invention comprises: a hologram generation server for generating a hologram streaming image by using multiple computers; and a hologram player for playing the hologram streaming image generated in the hologram generating server. Therefore, distributed processing of the multi-PCs is used to generate a hologram at high speed so that a service can be streamed without delay in real time even for a high-resolution hologram.
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公开(公告)号：US20240397167A1
公开(公告)日：2024-11-28
申请号：US18344065
申请日：2023-06-29
Applicant: Korea Electronics Technology Institute
Inventor： Ji Soo HONG , Sung Hee HONG , Young Min KIM , Jin Soo JEONG , Yong Hwa KIM , Byoung Hyo LEE , Hyeon Chan OH
IPC: H04N21/8358 , H04N21/234 , H04N21/239 , H04N21/24
Abstract: There is provided an object attribute-based watermarking method for preventing leakage of a digital content. A video watermarking method according to an embodiment may acquire a requested video and watermarking information upon receiving a request for video streaming from a user, may determine some of objects appearing in the video according to the watermarking information, may transform attributes of the determined objects, and may stream the transformed video. Accordingly, by watermarking an attribute of an object appearing in a video differently according to a user and providing the video, a watermark may be difficult to perceive, robustness against various attacks may be guaranteed, and a leakage path of a content may be checked.
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18.发明公开公开(公告)号：US20240119673A1
公开(公告)日：2024-04-11
申请号：US18013317
申请日：2021-12-15
Applicant: Korea Electronics Technology Institute
Inventor： Ji Soo HONG , Sung Hee HONG , Young Min KIM , Jin Soo JEONG , Byoung Hyo LEE
CPC classification number: G06T19/00 , G03H1/2294 , G06T3/403 , G06T2200/24 , G06T2210/36
Abstract: Provided is a cognitive experiment method for change in periphery region image quality for parameter determination of a foveated hologram. According to an embodiment, a cognitive experiment method for determining foveated image parameters includes: generating a foveated image which includes a foveal region and a periphery region while reducing image quality regarding the periphery region; displaying the generated foveated image; receiving an input of a response to image quality of the periphery region from a subject; and collecting information regarding appropriate image quality of the periphery region, based on the response inputted by the subject. Accordingly, in applying a foveated hologram generation algorithm for real-time reproduction, various parameters such as a boundary between a foveal region image and a periphery region image in a foveated hologram, and a degree of quality degradation of the periphery region image may be appropriately determined through a cognitive experiment.
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公开(公告)号：US20230245259A1
公开(公告)日：2023-08-03
申请号：US17768528
申请日：2019-10-15
Applicant: Korea Electronics Technology Institute
Inventor： Sung Hee HONG , Young Min KIM , Ji Soo HONG
CPC classification number: G06T1/0021 , H04N1/3224 , G06T2201/0051
Abstract: Provided is a method for inserting a copyright information indication as a means for protecting the copyright of LF content which can be played back as multi-viewpoint images, wherein the copyright information indication is only inserted in images of a specific viewpoint. A method for generating multi-viewpoint images according to an embodiment of the present invention includes the steps of: generating multi-viewpoint images; inserting a specific information indication in images of a specific viewpoint among the generated multi-viewpoint images; and storing the multi-viewpoint images in which the specific information indication has been inserted. Accordingly, the copyright of LF content, which are expensive multi-viewpoint images, can be protected by inserting the copyright information indication only in the images of the specific viewpoint.
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公开(公告)号：US20230047713A1
公开(公告)日：2023-02-16
申请号：US17622952
申请日：2020-12-02
Applicant: Korea Electronics Technology Institute
Inventor： Sung Hee HONG , Young Min KIM , Ji Soo HONG , Jin Soo JEONG
Abstract: Provided are a method and an apparatus for printing a hologram by using a mask. The hologram printing method according to an embodiment generates a hologram fringe pattern, splits the hologram fringe pattern on a hogel basis, generates the split hogels, masks a part of the generated hogel, and prints the masked hogel on a hologram medium. Accordingly, an empty space which occurs between hogels when a hologram is printed is prevented from being generated by using a mask, so that a fill factor can be effectively enhanced, and eventually, image quality of a hologram can be enhanced.
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