Patents by Inventor Eun Young Chang

Eun Young Chang 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: 20220357482
    Abstract: Provided are a method and system of analyzing ingredients of an artificial rainfall for verification of a cloud seeding effect. As the method and system, which can verify an effect of the artificial rainfall in such a manner that a seeding material becomes different according to each temperature of clouds at a seeding altitude, water sampling from precipitation is performed before and after seeding, and thus the ingredients of a water sample are analyzed using each of a method of analyzing a heavy metal component and a method of analyzing a water-soluble ion component according to a cool cloud and a warm cloud so that whether or not there is a change in each concentration of the ingredients can be determined, are provided, an experiment for the artificial rainfall can more effectively be performed.
    Type: Application
    Filed: February 28, 2022
    Publication date: November 10, 2022
    Inventors: Hae Jung KOO, Ki Ho CHANG, Joo Wan CHA, Hyunjun HWANG, Minhoo KIM, Woon Seon JUNG, Jung Mo KU, Ji Man PARK, Miloslav BELORID, Sang Hee CHAE, Ha-Young Yang, Chulkyu LEE, Ji Min WOO, Eun Hye SIM, Chang Hee KANG, Jung Min SONG
  • Publication number: 20210407145
    Abstract: Provided is a method of compressing an occupancy map of a three-dimensional (3D) point cloud, and more specifically, a method of compressing an occupancy map of a point cloud in which an occupancy map image of a point cloud existing in a 3D space is compressed based on a compression quality or a patch-by-patch inspection method of the occupancy map image so that compression distortion is minimized when reconstructing the compressed occupancy map image so as to remarkably improve the quality of a reconstructed occupancy map image.
    Type: Application
    Filed: June 30, 2021
    Publication date: December 30, 2021
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Eun Young CHANG, Euee Seon JANG, Tian Yu DONG, Ji Hun CHA, Kyu Tae KIM, Jae Young AHN
  • Patent number: 11151748
    Abstract: There is provided a method of decoding point cloud data, the method comprising: decoding a bitstream to obtain attribute information of point cloud data, acquiring attributes of the point cloud data using the decoded attribute information and reconstructing the point cloud data using the obtained attributes, wherein the attribute information contains bit depth information of each attribute of the point cloud data.
    Type: Grant
    Filed: July 12, 2019
    Date of Patent: October 19, 2021
    Assignees: Electronics and Telecommunications Research Institute, IUCF-HYU (INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY)
    Inventors: Eun Young Chang, Ji Hun Cha, Su Gil Choi, Euee Seon Jang, Min Ku Lee, You Sun Park
  • Publication number: 20210304354
    Abstract: There is provided a scalable point cloud encoding/decoding method and apparatus. The scalable point cloud decoding method comprises: acquiring an encoded texture image, an encoded geometry image, encoded occupancy map information, and encoded auxiliary patch-info information from a bitstream; acquiring a decoded texture image for each partition using the encoded texture image; reconstructing a geometry image of at least one item selected from among the encoded geometry image, the encoded occupancy map information, and the encoded auxiliary catch-info information; and reconstructing a point cloud using the texture images for the respective partitions and the geometry image.
    Type: Application
    Filed: July 12, 2019
    Publication date: September 30, 2021
    Applicants: Electronics and Telecommunications Research Institute, IUCF-HYU (INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY)
    Inventors: Eun Young CHANG, Ji Hun CHA, Su Gil CHOI, Euee Seon JANG, Li CUI, So Myung LEE
  • Patent number: 10895842
    Abstract: In the present invention, by receiving three-dimensional spatial data for a three-dimensional object, calculating a size of an elemental fringe pattern for each depth and a maximum size of the elemental fringe pattern for the three-dimensional spatial data, dividing the entire resolution of an entire predetermined hologram into a plurality of segments based on the number of divisions of the horizontal direction and the vertical direction, expanding resolution for each segment based on a maximum size for the elemental fringe pattern size, calculating a plurality of segment unit holograms for each of the segments, and accumulating overlapping regions between the plurality of segment unit holograms to produce the entire hologram for the entire resolution, it is possible to provide a hologram generating apparatus and method which may generate a hologram having a higher resolution at a faster speed than the conventional one.
    Type: Grant
    Filed: December 12, 2018
    Date of Patent: January 19, 2021
    Assignee: Electronics and Telecommunications Research Institute
    Inventor: Eun Young Chang
  • Publication number: 20200043199
    Abstract: There is provided a method of decoding point cloud data, the method comprising: decoding a bitstream to obtain attribute information of point cloud data, acquiring attributes of the point cloud data using the decoded attribute information and reconstructing the point cloud data using the obtained attributes, wherein the attribute information contains bit depth information of each attribute of the point cloud data.
    Type: Application
    Filed: July 12, 2019
    Publication date: February 6, 2020
    Applicants: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, IUCF-HYU (INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY)
    Inventors: Eun Young CHANG, Ji Hun CHA, Su Gil CHOI, Euee Seon JANG, Min Ku LEE, You Sun PARK
  • Publication number: 20190196400
    Abstract: In the present invention, by receiving three-dimensional spatial data for a three-dimensional object, calculating a size of an elemental fringe pattern for each depth and a maximum size of the elemental fringe pattern for the three-dimensional spatial data, dividing the entire resolution of an entire predetermined hologram into a plurality of segments based on the number of divisions of the horizontal direction and the vertical direction, expanding resolution for each segment based on a maximum size for the elemental fringe pattern size, calculating a plurality of segment unit holograms for each of the segments, and accumulating overlapping regions between the plurality of segment unit holograms to produce the entire hologram for the entire resolution, it is possible to provide a hologram generating apparatus and method which may generate a hologram having a higher resolution at a faster speed than the conventional one.
    Type: Application
    Filed: December 12, 2018
    Publication date: June 27, 2019
    Applicant: Electronics and Telecommunications Research Institute
    Inventor: Eun Young CHANG
  • Patent number: 10191450
    Abstract: Provided is a method and apparatus for generating a binary hologram. More particularly, provided is a method and apparatus that may decrease or, alternatively, minimize quality degradation of a binary hologram by employing a silhouette mask of a target object to reduce or, alternatively, minimize background noise occurring around the target object to be reproduced when generating the binary hologram.
    Type: Grant
    Filed: December 16, 2016
    Date of Patent: January 29, 2019
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventor: Eun Young Chang
  • Patent number: 9869971
    Abstract: Provided is a hologram generation method including receiving three-dimensional (3D) data information, determining a first projection position onto which the 3D data information is projected on a hologram plane corresponding to a first spatial light modulator (SLM), and a second projection position onto which the 3D data information is projected on a hologram plane corresponding to a second SLM, generating a first Fresnel zone plate (FZP) pattern corresponding to the first projection position, and determining the first FZP pattern to be an FZP pattern corresponding to the second projection position.
    Type: Grant
    Filed: January 4, 2016
    Date of Patent: January 16, 2018
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Eun Young Chang, Soo Hyun Lee, Jin Woong Kim, Tae One Kim, Kyung Ae Moon, Joong Ki Park
  • Publication number: 20170176930
    Abstract: Provided is a method and apparatus for generating a binary hologram. More particularly, provided is a method and apparatus that may decrease or, alternatively, minimize quality degradation of a binary hologram by employing a silhouette mask of a target object to reduce or, alternatively, minimize background noise occurring around the target object to be reproduced when generating the binary hologram.
    Type: Application
    Filed: December 16, 2016
    Publication date: June 22, 2017
    Inventor: Eun Young CHANG
  • Patent number: 9661314
    Abstract: Provided are an image magnification apparatus and method for three-dimensional display images. A multi-view image magnification apparatus includes: a region designation detection unit for detecting detection regions corresponding to the magnification regions of three-dimensional display images from original view images; a magnification ratio determination unit for determining the magnification ratios of the magnification regions; and a partial multiplexing unit for multiplexing non-detection regions except for the detection regions of the original view images according to a predetermined resolution and multiplexing the detection regions according the resolution which is different from the resolution of the non-detection regions on the basis of the magnification ratios. The present invention can magnify the images without lowering the resolution in a three-dimensional display.
    Type: Grant
    Filed: July 2, 2012
    Date of Patent: May 23, 2017
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Hong Chang Shin, Gun Bang, Gi Mun Um, Tae One Kim, Eun Young Chang, Won Sik Cheong, Nam Ho Hur
  • Publication number: 20160195850
    Abstract: Provided is a hologram generation method including receiving three-dimensional (3D) data information, determining a first projection position onto which the 3D data information is projected on a hologram plane corresponding to a first spatial light modulator (SLM), and a second projection position onto which the 3D data information is projected on a hologram plane corresponding to a second SLM, generating a first Fresnel zone plate (FZP) pattern corresponding to the first projection position, and determining the first FZP pattern to be an FZP pattern corresponding to the second projection position.
    Type: Application
    Filed: January 4, 2016
    Publication date: July 7, 2016
    Inventors: Eun Young CHANG, Soo Hyun LEE, Jin Woong KIM, Tae One KIM, Kyung Ae MOON, Joong Ki PARK
  • Patent number: 9143796
    Abstract: Provided is a multi-view video coding/decoding method and apparatus which uses coded and decoded multi-view videos to code and decode depth information videos corresponding to the multi-view videos. The multi-view video coding method includes: controlling the scales of first and second depth information videos corresponding to a multi-view video such that the scales are equalized; and coding the second depth information video, of which the scale is controlled, by referring to the first depth information video of which the scale is controlled.
    Type: Grant
    Filed: December 8, 2009
    Date of Patent: September 22, 2015
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Gun Bang, Gi-Mun Um, Taeone Kim, Eun-Young Chang, Namho Hur, Jin-Woong Kim, Soo-In Lee
  • Patent number: 9124863
    Abstract: A device for creating multi-view video contents includes a virtual view position and distribution unit that calculates a plurality of virtual views corresponding to the number of predetermined virtual views based on input information and distributes the calculated positions of the plurality of virtual views to a plurality of view synthesis processing units; a view synthesis processor that operates the plurality of view synthesis processing units in parallel, allows each of the view synthesis processing units to create at least one virtual view video corresponding to a position of at least one virtual view distributed from the virtual view position calculation and distribution unit, and performs partial multiplexing based on at least one created virtual view video; and a video integration unit that integrates a plurality of partially multiplexed videos output from the plurality of view synthesis processing units.
    Type: Grant
    Filed: December 16, 2011
    Date of Patent: September 1, 2015
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Hong-Chang Shin, Gun Bang, Gi-Mun Um, Tae One Kim, Eun Young Chang, Nam Ho Hur, Soo In Lee
  • Publication number: 20150192898
    Abstract: An apparatus and method for measuring and evaluating a field of view (FOV) that measures an FOV of a reconstructed image of a hologram, and evaluates a quality of the reconstructed image of the hologram is provided, the apparatus configured to photograph an optically reconstructed hologram image based on an integral imaging scheme to obtain an integral image, measure FOV information using the integral image, calculate FOV information of a source based on three-dimensional (3D) stereoscopic information used in the optical reconstruction of the hologram image, and evaluate an FOV reconstruction quality of the hologram image.
    Type: Application
    Filed: January 2, 2015
    Publication date: July 9, 2015
    Inventors: Je Ho NAM, Soo Hyun LEE, Eun Young CHANG
  • Publication number: 20140300941
    Abstract: Disclosed are a method and apparatus for generating a hologram based on a multi-view image. The method of generating a hologram image may include receiving a multi-view image and calculating depth information about an image at each view of the multi-view image, calculating an integrated 3-D space datum based on the multi-view image and the pieces of depth information, and generating hologram information from the integrated 3-D space datum. Accordingly, a natural 3-D image can be played because a 3-D image corresponding to an observer view is reproduced without a process of generating in-between view images and pieces of corresponding depth information when the observer moves.
    Type: Application
    Filed: April 4, 2014
    Publication date: October 9, 2014
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Eun Young CHANG, Kyung Ae MOON, Jin Woong KIM
  • Publication number: 20140211286
    Abstract: Disclosed are an apparatus and a method for generating a digital hologram for reproducing a 3D stereoscopic image, and more particularly, an apparatus and a method for generating a digital hologram, which generate the digital hologram by receiving a depth information pre-processing process of generating first depth map information constituted by a first depth level and second depth map information constituted a second depth level by receiving color image information from an imaging unit.
    Type: Application
    Filed: January 28, 2014
    Publication date: July 31, 2014
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Je Ho NAM, Eun Young CHANG, Min Sik PARK
  • Patent number: 8731279
    Abstract: Method and device for generating a multi-viewpoint image are provided. The method of generating a multi-viewpoint image includes the steps of: acquiring at least one reference-viewpoint image; generating unit image information of a virtual-viewpoint image on the basis of unit image information of the reference-viewpoint image; multiplexing the unit image information of the reference-viewpoint image and the unit image information of the virtual-viewpoint image; and generating a multi-viewpoint image by performing an interpolation process on occluded areas between the multiplexed unit image information using the multiplexed unit image information. As a result, it is possible to avoid unnecessary processes of completing and rearranging individual viewpoint images in the course of generating a multi-viewpoint image.
    Type: Grant
    Filed: December 8, 2011
    Date of Patent: May 20, 2014
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Hong-Chang Shin, Gun Bang, Gi-Mun Um, Tae One Kim, Eun Young Chang, Nam Ho Hur, Soo In Lee
  • Publication number: 20140132743
    Abstract: Provided are an image magnification apparatus and method for three-dimensional display images. A multi-view image magnification apparatus includes: a region designation detection unit for detecting detection regions corresponding to the magnification regions of three-dimensional display images from original view images; a magnification ratio determination unit for determining the magnification ratios of the magnification regions; and a partial multiplexing unit for multiplexing non-detection regions except for the detection regions of the original view images according to a predetermined resolution and multiplexing the detection regions according the resolution which is different from the resolution of the non-detection regions on the basis of the magnification ratios. The present invention can magnify the images without lowering the resolution in a three-dimensional display.
    Type: Application
    Filed: July 2, 2012
    Publication date: May 15, 2014
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Hong Chang Shin, Gun Bang, Gi Mun Um, Tae One Kim, Eun Young Chang, Won Sik Cheong, Nam Ho Hur
  • Patent number: 8675040
    Abstract: A method and a device for adjusting depth perception, a terminal including a function for adjusting depth perception and a method for operating the terminal are provided. The method for adjusting depth perception includes: obtaining color and depth videos of a user; detecting a user's position based on the obtained depth video of the user; calculating a range of maximum and minimum depths in a 3-dimensional (3D) video according to the detected user's position; and adjusting a left and right stereo video generating interval of the 3D video to be rendered so as to satisfy the calculated range of the maximum and minimum depths. Therefore, during a 3D or multi-view video call, the 3D video having a three-dimensional effect optimized according to the user's position may be provided.
    Type: Grant
    Filed: December 7, 2011
    Date of Patent: March 18, 2014
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Gi-Mun Um, Gun Bang, Tae One Kim, Eun Young Chang, Hong Chang Shin, Nam Ho Hur, Soo In Lee