Patents by Inventor Hyon-Gon Choo

Hyon-Gon Choo has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20220301181
    Abstract: Disclosed herein is a method for compressing an image for machine vision, the method including detecting objects in an input image using an object detection network, generating a foreground image including bounding boxes corresponding to the objects and a background image, which is an image acquired by excluding the bounding boxes from the input image, encoding the foreground image and the background image, and decoding the encoded foreground image and the encoded background image.
    Type: Application
    Filed: March 17, 2022
    Publication date: September 22, 2022
    Applicants: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, KONKUK UNIVERSITY INDUSTRIAL COOPERATION CORP
    Inventors: Kyoung-Ro YOON, Han-Shin LIM, Hyon-Gon CHOO, Shin KIM, Ye-Gi LEE
  • Publication number: 20220207672
    Abstract: Disclosed herein are an apparatus and method for sensing an image based on an event. The apparatus includes memory in which at least one program is recorded and a processor for executing the program. The program may perform acquiring at least one of brightness information and color information from an input image signal, performing conversion including at least one of filtering of at least one of the acquired brightness information and color information, color conversion, and brightness conversion, calculating a quantized difference between a first converted image converted from the currently input image signal and a second converted image converted from a previously input image signal, and generating event information for the input image signal as a bitstream based on the quantized difference.
    Type: Application
    Filed: May 12, 2021
    Publication date: June 30, 2022
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Jeong-Il SEO, Hyon-Gon CHOO
  • Publication number: 20220166976
    Abstract: Disclosed herein are a method, an apparatus and a storage medium for image encoding/decoding using a segmentation map. A feature vector for an image may be extracted using a segmentation map. The image may be encoded using the segmentation map and the feature vector. An output stream from an encoding apparatus may include a video stream and a feature stream. An input stream to a decoding apparatus may include a video stream and a feature stream. The image may be reconstructed using a reconstructed segmentation map and a reconstructed feature vector.
    Type: Application
    Filed: November 24, 2021
    Publication date: May 26, 2022
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Hyon-Gon CHOO, Hee-Kyung LEE, Han-Shin LIM, Jeong-Il SEO, Won-Sik CHEONG
  • Patent number: 10585393
    Abstract: Provided is a holographic display apparatus including a motor configured to synchronize with a hologram transmitted based on user's point of view and to rotate; a spatial light modulator configured to load hologram data generated based on the user's point of view in a fixed position state and to perform a light modulation; a mirror configured to provide the hologram which is light-modulated by the spatial light modulator according to the user's point of view during the rotation by rotation operation of the motor; and a hologram correction unit configured to compensate a rotation error between the fixed spatial light modulator and the rotating mirror and to provide a corrected hologram data to the spatial light modulator.
    Type: Grant
    Filed: August 15, 2016
    Date of Patent: March 10, 2020
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Tae One Kim, Hyun Eui Kim, Hyon Gon Choo, Jin Woong Kim, Jin Soo Choi
  • Publication number: 20190204784
    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 ho
    Type: Application
    Filed: December 18, 2018
    Publication date: July 4, 2019
    Inventors: Keehoon HONG, Kwan-Jung OH, Hyon-Gon CHOO, Yongjun LIM
  • Patent number: 10127646
    Abstract: Provided is an apparatus for measuring a quality of a holographic image. The apparatus includes: a hologram image reconstruction unit configured to perform a hologram image; a superimposed focus image generation unit configured to collect an area that is in focus from reconstructed images and superimpose into a single image; and a hologram image quality measurement unit configured to perform an image quality evaluation for the superimposed focus image.
    Type: Grant
    Filed: July 26, 2016
    Date of Patent: November 13, 2018
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Kwan Jung Oh, Hyon Gon Choo, Jin Woong Kim
  • Publication number: 20180292785
    Abstract: Provided are an apparatus and a method for displaying a hologram image based on pupil tracking, wherein a hologram image display apparatus includes a location determiner to determine a location of a user using a captured image of the user and a hologram information reconstructor to reconstruct first hologram information as second hologram information optimized for the location of the user to reproduce the hologram image.
    Type: Application
    Filed: November 5, 2014
    Publication date: October 11, 2018
    Inventors: Hyon Gon CHOO, Kyung Ae MOON, Min Sik PARK, Hyun Eui KIM, Jin Woong KIM
  • Patent number: 9998800
    Abstract: Disclosed are a method and apparatus for providing a three-dimensional (3D) broadcast service using images with asymmetric aspect ratios and a method and apparatus for reproducing a 3D broadcast service. The method of providing the 3D broadcast service includes adjusting a second viewpoint image to be composed with a first viewpoint image into a 3D form with respect to the first viewpoint image and the second viewpoint image for 3D broadcasting, encoding the first viewpoint image and the adjusted second viewpoint image, and generating a broadcast stream of the first viewpoint image and a broadcast stream of the second viewpoint image by multiplexing the first viewpoint image and the second viewpoint image.
    Type: Grant
    Filed: March 12, 2014
    Date of Patent: June 12, 2018
    Assignees: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, HIDEA SOLUTIONS CO., LTD., KOOKMIN UNIVERSITY INDUSTRY ACADEMY COOPERATION FOUNDATION
    Inventors: Joo Young Lee, Sung Hoon Kim, Hyon Gon Choo, Jin Soo Choi, Jin Woong Kim, Suk Jin Hong, Jin Suk Kwak, Dong Wook Kang, Kyeong Hoon Jung
  • Patent number: 9906767
    Abstract: Disclosed is an apparatus and method for digital holographic table top display. The digital holographic table top display apparatus includes: a camera array configured to capture a plurality of channel images in an omni-directional range from a table by using a plurality of cameras; a controller configured to detect an observer from the plurality of channel images and to track a position of pupils of the observer in at least one channel image from which the observer is detected; and a display configured to reproduce a digital holographic image in a three-dimensional (3D) space according to the tracked position of the pupils.
    Type: Grant
    Filed: October 14, 2015
    Date of Patent: February 27, 2018
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Hyon Gon Choo, Soo Hyun Lee, Jin Woong Kim, Kyung Ae Moon
  • Patent number: 9894341
    Abstract: Provided is a video providing method and a video playing method for a three-dimensional (3D) video, and an apparatus for performing the methods. The video providing method may transmit a reconstruction mode for reconstructing a low-resolution additional video having lower resolution than a high-resolution reference video.
    Type: Grant
    Filed: August 10, 2012
    Date of Patent: February 13, 2018
    Assignees: Electronics and Telecommunications Research Institute, KAI MEDIA CO., Hidea Solutions Co., Ltd., Kookmin University Industry Academy Cooperation Foundation
    Inventors: Sung Hoon Kim, Joo Young Lee, Hyon Gon Choo, Jin Soo Choi, Jin Woong Kim, Suk Jin Hong, Jin Suk Kwak, Min Suk Lee, Dong Wook Kang, Kyeong Hoon Jung
  • Patent number: 9860458
    Abstract: A method of switching a transport stream, (TS) such as an MPEG-2 TS, receives a plurality of input streams, receives a switching command for a first input stream, among the plurality of input streams, that is currently being output, searches for an out-point of the first input stream and an in-point of a second input stream to be newly output, in response to the switching command, inserts a virtual P picture stream between the out-point and the in-point, and switches from the first input stream into the second input stream based on the out-point and the in-point.
    Type: Grant
    Filed: June 16, 2014
    Date of Patent: January 2, 2018
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Suk Hee Cho, Jong Ho Kim, Hyon Gon Choo, Jin Soo Choi, Jin Woong Kim
  • Patent number: 9860515
    Abstract: A boundary information providing apparatus may include a boundary information generation unit to generate boundary information of a video, the boundary information through which a switching point between a 2D video and a 3D video is recognized, based on a switching mode between the 2D video and the 3D video, and a stream transmission unit to transmit a stream including the boundary information to a video receiving apparatus.
    Type: Grant
    Filed: December 11, 2013
    Date of Patent: January 2, 2018
    Assignees: Electronics and Telecommunications Research Institute, Hidea Solutions Co., Ltd., Kookmin University Industry Academy Cooperation Foundation
    Inventors: Joo Young Lee, Sung Hoon Kim, Hyon Gon Choo, Jin Soo Choi, Jin Woong Kim, Suk Jin Hong, Dong Wook Kang, Kyeong Hoon Jung
  • Publication number: 20170148151
    Abstract: Provided is an apparatus for measuring a quality of a holographic image. The apparatus includes: a hologram image reconstruction unit configured to perform a hologram image; a superimposed focus image generation unit configured to collect an area that is in focus from reconstructed images and superimpose into a single image; and a hologram image quality measurement unit configured to perform an image quality evaluation for the superimposed focus image.
    Type: Application
    Filed: July 26, 2016
    Publication date: May 25, 2017
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Kwan Jung OH, Hyon Gon CHOO, Jin Woong KIM
  • Publication number: 20170060088
    Abstract: Provided is a holographic display apparatus including a motor configured to synchronize with a hologram transmitted based on user's point of view and to rotate; a spatial light modulator configured to load hologram data generated based on the user's point of view in a fixed position state and to perform a light modulation; a mirror configured to provide the hologram which is light-modulated by the spatial light modulator according to the user's point of view during the rotation by rotation operation of the motor; and a hologram correction unit configured to compensate a rotation error between the fixed spatial light modulator and the rotating mirror and to provide a corrected hologram data to the spatial light modulator.
    Type: Application
    Filed: August 15, 2016
    Publication date: March 2, 2017
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Tae One KIM, Hyun Eui KIM, Hyon Gon CHOO, Jin Woong KIM, Jin Soo CHOI
  • Publication number: 20160105658
    Abstract: Disclosed is an apparatus and method for digital holographic table top display. The digital holographic table top display apparatus includes: a camera array configured to capture a plurality of channel images in an omni-directional range from a table by using a plurality of cameras; a controller configured to detect an observer from the plurality of channel images and to track a position of pupils of the observer in at least one channel image from which the observer is detected; and a display configured to reproduce a digital holographic image in a three-dimensional (3D) space according to the tracked position of the pupils.
    Type: Application
    Filed: October 14, 2015
    Publication date: April 14, 2016
    Inventors: Hyon Gon CHOO, Soo Hyun LEE, Jin Woong KIM, Kyung Ae MOON
  • Patent number: 9270972
    Abstract: A method for 3DTV multiplexing according to the present invention comprises, deriving a delay value in units of frames for the left and right image based on a left image PES (Packetized Elementary Stream) corresponding to a left image and a right image PES corresponding to a right image, carrying out synchronization of the left image PES and the right image PES based on the delay value in units of frames, and generating 3DTV transport streams (TSs) by carrying out multiplexing of the synchronized left image PES and the synchronized right image PES. According to the present invention, efficiency of video services can be improved.
    Type: Grant
    Filed: December 17, 2012
    Date of Patent: February 23, 2016
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Suk Hee Cho, Jong Ho Kim, Se Yoon Jeong, Hyon Gon Choo, Jin Soo Choi, Jin Woong Kim
  • Patent number: 9253467
    Abstract: The present invention relates to correcting errors of multiple stream-based 3D images. The present invention comprises a 3D image synchronizing unit which synchronizes a first image and a second image consisting the 3D image; a 3D image correcting unit which detects an error block in the first image, searches a corresponding block in the second image, and corrects the error block on the basis of the block information of said corresponding block; and a compositing unit which composites the corrected first image and the second image to generate a 3D stereoscopic image. According to the present invention, bit errors occurring when transmitting multiple stream of 3D image can be corrected, providing better quality of 3D images. Also, error correction can be easily performed by using the method of the present invention without complicated calculations.
    Type: Grant
    Filed: October 23, 2013
    Date of Patent: February 2, 2016
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Hyon Gon Choo, Suk Hee Cho, Jong Ho Kim, Jin Soo Choi, Jin Woong Kim
  • Publication number: 20150323900
    Abstract: An apparatus and method for enhancing a resolution and a wide viewing angle of a holographic system is provided, the method including determining a multiple N of a target resolution and a wide viewing angle based on a resolution of a spatial light modulator (SLM) and an angle of view of a condensing lens, generating a plurality of hogels from a target image based on the determined multiple N of the target resolution and wide viewing angle, and recording the target image on a recording medium using a condensed beam obtained from a parallel beam that loads the plurality of hogels passing through the condensing lens.
    Type: Application
    Filed: May 8, 2015
    Publication date: November 12, 2015
    Inventors: Kwan Jung OH, Jae Han KIM, Jin Woong KIM, Tae One KIM, Kyung Ae MOON, Bong Ho LEE, Hyon Gon CHOO
  • Publication number: 20150261186
    Abstract: A method and apparatus for enhancing a recording speed in digital holographic image recording is provided, the method including analyzing a target image, generating a plurality of hogels from the target image, and recording the plurality of hogels on a recording medium based on a light modulation scheme, wherein the target image includes a plurality regions, and a size of the plurality of hogels differs based on the plurality of regions of the target image.
    Type: Application
    Filed: March 13, 2015
    Publication date: September 17, 2015
    Inventors: Kwan Jung OH, Bong Ho LEE, Tae One KIM, Hyon Gon CHOO, Jae Han KIM, Kyung Ae MOON, Jin Woong KIM
  • Publication number: 20150234350
    Abstract: The present invention proposes a digital holographic display apparatus including a light generating unit configured to generate coherent light, a spatial light modulator configured to reproduce 3-dimensional hologram images on a space by modulating the coherent light, a vertical viewing angle magnifying unit configured to expand a vertical viewing angle by vertically steering a beam that forms the hologram images through a first mirror, a horizontal viewing angle magnifying unit configured to expand a horizontal viewing angle by steering the beam to top of a table through a second mirror, and a control unit configured to control the special light modulator, the vertical viewing angle magnifying unit and the horizontal viewing angle magnifying unit in order the hologram images to be formed on an observation space for hologram. Accordingly, by expanding the horizontal and vertical viewing angles of hologram images, an observer may observe the hologram images more comfortably.
    Type: Application
    Filed: December 19, 2014
    Publication date: August 20, 2015
    Inventors: Min Sik PARK, Hyun Eui KIM, Byung Gyu CHAE, Hyon Gon CHOO, Kyung Ae MOON, Jin Woong KIM