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公开(公告)号：US20240153034A1
公开(公告)日：2024-05-09
申请号：US18370085
申请日：2023-09-19
Inventor： Kwan-Jung OH , Yongjun LIM
CPC classification number: G06T3/4053 , G06T5/001 , G06T5/50 , G06T7/70 , G06T2207/10056 , G06T2207/20016
Abstract: A method and apparatus for processing or compressing image data are disclosed. A method of processing or compressing image data, performed by an apparatus, according to an embodiment of the present disclosure may include obtaining a plurality of low-resolution images of a specific object through a microscope; and processing or compressing the plurality of low-resolution images, based on at least one of i) a first correlation between adjacent low-resolution images among the plurality of low-resolution images, or ii) a second correlation between a virtual low-resolution image corresponding to a location of a specific light emitting diode (LED) obtained through the plurality of low-resolution images and an actual low-resolution image corresponding to a location of the specific LED among the plurality of low-resolution images.
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公开(公告)号：US20190204784A1
公开(公告)日：2019-07-04
申请号：US16224542
申请日：2018-12-18
Inventor： Keehoon HONG , Kwan-Jung OH , Hyon-Gon CHOO , Yongjun LIM
IPC: G03H1/26
CPC classification number: G03H1/2645 , G03H2223/15 , G03H2223/50 , G03H2225/12
Abstract: In the present invention, by providing an apparatus for displaying a hologram including: a beam source configured to output a plurality of beams, a spatial light modulator configured to include a plurality of SLM (spatial light modulator) regions, display a hologram, and diffract the plurality of beams; a plurality of front lenses each corresponding to the plurality of SLM regions, and configured to refract the plurality of beams diffracted from each of the plurality of SLM regions; a plurality of filters each corresponding to the plurality of SLM regions, and configured to filter a part of the plurality of refracted beams; and a plurality of back lenses each corresponding to the plurality of SLM regions, and configured to display an interference image corresponding to the hologram using the filtered part beam, the beam path of the hologram displaying apparatus can be drastically reduced, and an entire size of the hologram displaying apparatus can be reduced, so that it is possible to down-size the digital hologram display system.
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3.发明公开公开(公告)号：US20240159998A1
公开(公告)日：2024-05-16
申请号：US18481794
申请日：2023-10-05
Inventor： Yongjun LIM , Kwan-Jung OH
CPC classification number: G02B21/06 , G02B21/361 , G02B21/367 , H04N23/56 , H04N23/74 , H04N23/95
Abstract: A reflection-type Fourier ptychographic microscopy (FPM), a control method of the reflection-type FPM, and a system thereof are disclosed. According to an embodiment of the present disclosure, a reflection FPM may include an objective lens; a light splitter connected to a member including the objective lens; a first illumination system including a first LED array composed of a plurality of LEDs for irradiating a first beam passing through the objective lens through the light splitter; a second illumination system including a plurality of LEDs for radiating a second beam to a measurement sample in a periphery of the objective lens, and repeatedly moving in an up and down direction based on a virtual center line penetrating the objective lens; and a camera.
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公开(公告)号：US20210149340A1
公开(公告)日：2021-05-20
申请号：US16951391
申请日：2020-11-18
Inventor： Kwan-Jung OH
Abstract: A method of generating a hologram includes receiving an input image representing a 3D object, defining a first phase value for a first pixel data such that spatio-temporally identical pixels with respect to the input image have the same phase, defining a second phase value for a second pixel data such that spatio-temporally identical pixels with respect to the input image have the same phase, and generating a multi-view hologram using the first phase value and the second phase value.
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公开(公告)号：US20220215566A1
公开(公告)日：2022-07-07
申请号：US17569944
申请日：2022-01-06
Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE , INDUSTRY-UNIVERSITY COOPERATION FOUNDATION KOREA AEROSPACE UNIVERSITY
Inventor： Kwan-Jung OH , Gwang-Soon LEE , Do-Hyeon PARK , Jae-Gon KIM , Sung-Gyun LIM
Abstract: Disclosed herein is a method for piecewise linear scaling of a geometry atlas, the method including generating min-max normalized depth values and generating geometry atlases by scaling the depth values so as to correspond to the gradients of multiple linear intervals.
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Patent Agency Ranking
公开(公告)号：US20210141339A1
公开(公告)日：2021-05-13
申请号：US17089977
申请日：2020-11-05
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.
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7.发明申请公开(公告)号：US20250119558A1
公开(公告)日：2025-04-10
申请号：US18907829
申请日：2024-10-07
Inventor： Kwan-Jung OH , Gwangsoon LEE
IPC: H04N19/186 , H04N19/184 , H04N19/70
Abstract: An image encoding method according to the present disclosure may include performing a low gradational conversion for an original depth image of a first bit depth to generate a first depth image of a second bit depth; and encoding the first depth image through a color image of a third bit depth. In this case, the third bit depth may be smaller than the second bit depth.
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公开(公告)号：US20240348807A1
公开(公告)日：2024-10-17
申请号：US18638119
申请日：2024-04-17
Applicant: Electronics and Telecommunications Research Institute , IUCF-HYU (Industry-University Cooperation Foundation Hanyang University)
Inventor： Kwan-Jung OH , Gwangsoon LEE , Euee-S. JANG , Jai-Young OH , Tian-Yu DONG , Xin LI
IPC: H04N19/30 , H04N19/136 , H04N19/182 , H04N19/20 , H04N19/46
CPC classification number: H04N19/30 , H04N19/136 , H04N19/182 , H04N19/20 , H04N19/46
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 first information showing whether a viewpoint image is a background image.
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公开(公告)号：US20230119281A1
公开(公告)日：2023-04-20
申请号：US17961028
申请日：2022-10-06
Inventor： Kwan-Jung OH , Gwangsoon Lee , Euee S. JANG
IPC: 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.
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公开(公告)号：US20190187614A1
公开(公告)日：2019-06-20
申请号：US16213357
申请日：2018-12-07
Inventor： Kwan-Jung OH
CPC classification number: G03H1/2202 , G03H1/0443 , G03H1/2286 , G03H2001/2234 , G03H2223/13 , G03H2223/23 , G03H2226/02 , G03H2240/13
Abstract: In the present invention, by providing an apparatus for displaying a complex modulated holograph and including a light source configured to output light, a display configured to display the hologram by diffracting the output light through a plurality of pixels, and a processor configured to control the display to obtain complex hologram data corresponding to the hologram, and modulate the output light based on the complex hologram data and device information of the plurality of pixels, it is possible to modulate amplitude information and phase information of the light source into required values and display a complex hologram, and to remove a noise component of the hologram.
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