Patents by Inventor Ji-Hoon DO

Ji-Hoon DO 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: 20250113055
    Abstract: Disclosed herein are a method, an apparatus, and a storage medium for image encoding/decoding. An intra-prediction mode for the target block is derived, and intra-prediction for the target block that uses the derived intra-prediction mode is performed. The intra-prediction mode for the target block is derived using an artificial neural network, and an MPM list for the target block is derived using information about the target block, pieces of information about blocks adjacent to the target block, and the artificial neural network. The artificial neural network outputs one or more available intra-prediction modes. Further, the artificial neural network outputs match probabilities for one or more candidate intra-prediction modes, and each of the match probabilities for the candidate intra-prediction modes indicates a probability that the corresponding candidate intra-prediction mode matches the intra-prediction mode for the target block.
    Type: Application
    Filed: December 11, 2024
    Publication date: April 3, 2025
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Dong-Hyun KIM, Ji-Hoon DO, Youn-Hee KIM, Se-Yoon JEONG, Hyoung-Jin KWON, Jong-Ho KIM, Joo-Young LEE, Jin-Soo CHOI, Tae-Jin LEE
  • Publication number: 20250097411
    Abstract: An encoding/decoding method and device according to the present disclosure may: determine at least one among a plurality of inter prediction modes as the inter prediction mode of the current block; form an inter prediction candidate list on the basis of the determined inter prediction mode; perform motion compensation on the basis of one prediction candidate in the inter prediction candidate list, and generate a first prediction block of the current block; and correct the first prediction block by using a prescribed intra prediction mode.
    Type: Application
    Filed: December 4, 2024
    Publication date: March 20, 2025
    Inventors: Jae Gon KIM, Do Hyeon PARK, Yong Uk YOON, Ji Hoon DO
  • Publication number: 20250095216
    Abstract: This disclosure provides a method and apparatus for compressing 3-dimensional volume data. The method for encoding a TSDF volume may comprise: lossily encoding magnitude information of a Truncated Signed Distance Field (TSDF) volume based on a hyperprior model; and losslessly encoding sign information of the TSDF volume based on the hyperprior model, wherein the lossy encoding comprises selecting and entropy-encoding some elements from a latent vector for the TSDF volume based on selection information obtained through the hyperprior model.
    Type: Application
    Filed: September 19, 2024
    Publication date: March 20, 2025
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Soo Woong KIM, Gun BANG, Ji Hoon DO, Seong Jun BAE, Jin Ho LEE, Ha Hyun LEE, Jung Won KANG
  • Publication number: 20250054224
    Abstract: The present disclosure relates to a method and apparatus for representing dynamic neural radiance fields from unsynchronized videos. A method of acquiring a video at an arbitrary viewpoint based on a dynamic neural radiance fields model according to an embodiment of the present disclosure may comprise: inputting one or more videos acquired from one or more views for one scene into the dynamic neural radiance fields model; inputting a time embedding for the one or more videos into the dynamic neural radiance fields model; and rendering the video at the arbitrary viewpoint based on color information and density information output by the dynamic neural radiance fields model. Herein, time synchronization related to the time embedding may be performed by applying an individual time offset learned for each view, for the one or more views.
    Type: Application
    Filed: August 9, 2024
    Publication date: February 13, 2025
    Applicants: Electronics and Telecommunications Research Institute, UIF (University Industry Foundation), Yonsei University
    Inventors: Ha Hyun LEE, Gun Bang, Soo Woong Kim, Ji Hoon Do, Seong Jun Bae, Jin Ho Lee, Jung Won Kang, Young Jung Uh, Seo Ha Kim, Jung Min Bae, Young Sik Yun
  • Patent number: 12206894
    Abstract: Disclosed herein are a method, an apparatus, and a storage medium for image encoding/decoding. An intra-prediction mode for the target block is derived, and intra-prediction for the target block that uses the derived intra-prediction mode is performed. The intra-prediction mode for the target block is derived using an artificial neural network, and an MPM list for the target block is derived using information about the target block, pieces of information about blocks adjacent to the target block, and the artificial neural network. The artificial neural network outputs one or more available intra-prediction modes. Further, the artificial neural network outputs match probabilities for one or more candidate intra-prediction modes, and each of the match probabilities for the candidate intra-prediction modes indicates a probability that the corresponding candidate intra-prediction mode matches the intra-prediction mode for the target block.
    Type: Grant
    Filed: September 20, 2021
    Date of Patent: January 21, 2025
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Dong-Hyun Kim, Ji-Hoon Do, Youn-Hee Kim, Se-Yoon Jeong, Hyoung-Jin Kwon, Jong-Ho Kim, Joo-Young Lee, Jin-Soo Choi, Tae-Jin Lee
  • Publication number: 20250024037
    Abstract: The present invention provides a method and device wherein segmentation information for a current picture is encoded/decoded, and the current picture is segmented into at least one of sub-picture units, slice units, and tile units according to the encoded/decoded segmentation information.
    Type: Application
    Filed: October 2, 2024
    Publication date: January 16, 2025
    Applicant: HANWHA VISION CO., LTD.
    Inventors: Jae Gon KIM, Ji Hoon DO, Do Heon PARK, Yong Uk YOON
  • Patent number: 12192450
    Abstract: An encoding/decoding method and device according to the present disclosure may: determine at least one among a plurality of inter prediction modes as the inter prediction mode of the current block; form an inter prediction candidate list on the basis of the determined inter prediction mode; perform motion compensation on the basis of one prediction candidate in the inter prediction candidate list, and generate a first prediction block of the current block; and correct the first prediction block by using a prescribed intra prediction mode.
    Type: Grant
    Filed: August 21, 2023
    Date of Patent: January 7, 2025
    Assignee: INTELLECTUAL DISCOVERY CO., LTD.
    Inventors: Jae Gon Kim, Do Hyeon Park, Yong Uk Yoon, Ji Hoon Do
  • Patent number: 12190548
    Abstract: There are provided an apparatus, method, system, and recording medium for performing selective encoding/decoding on feature information. An encoding apparatus generates residual feature information. The encoding apparatus transmits the residual feature information to a decoding apparatus through a residual feature map bitstream. The residual feature information is the difference between feature information extracted from an original image and feature information extracted from a reconstructed image. Feature information of the reconstructed image is generated using the reconstructed image. Reconstructed feature information is generated using the feature information of the reconstructed image and reconstructed residual feature information.
    Type: Grant
    Filed: September 22, 2021
    Date of Patent: January 7, 2025
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Ji-Hoon Do, Hyoung-Jin Kwon, Dong-Hyun Kim, Youn-Hee Kim, Joo-Young Lee, Se-Yoon Jeong, Jin-Soo Choi, Tae-Jin Lee, Jee-Hoon Kim, Dong-Gyu Sim, Seoung-Jun Oh, Min-Hun Lee, Yun-Gu Lee, Han-Sol Choi, Kwang-Hwan Kim
  • Publication number: 20240414324
    Abstract: An image encoding and decoding method comprises the steps of: determining an inter-component prediction mode of a chrominance component block on the basis of an inter-component prediction mode list and predetermined index information; determining a reference sample for inter-component prediction of the chrominance component block on the basis of the determined inter-component prediction mode; deriving the parameters of a linear prediction model by using the reference sample; and performing inter-component prediction for the chrominance component block by using the parameters of the linear prediction model.
    Type: Application
    Filed: August 22, 2024
    Publication date: December 12, 2024
    Inventors: Jae Gon KIM, Do Hyeon PARK, Yong Uk YOON, Ji Hoon DO
  • Publication number: 20240414350
    Abstract: Disclosed herein are an image encoding/decoding method and apparatus. The image decoding method of the present disclosure may include obtaining maximum transform block size information, deriving a maximum transform block size on the basis of the maximum transform block size information, and, determining whether or not a secondary inverse transform is applied to the current block on the basis of the maximum transform block size and a horizontal size and a vertical size of a current block.
    Type: Application
    Filed: August 20, 2024
    Publication date: December 12, 2024
    Inventors: Jin Ho LEE, Jung Won KANG, Ha Hyun LEE, Sung Chang LIM, Hui Yong KIM, Jae Gon KIM, Do Hyeon PARK, Ji Hoon DO, Yong Uk YOON
  • Publication number: 20240406376
    Abstract: An image encoding/decoding method and apparatus are disclosed. The method of decoding an image according to the present invention, comprises, generating a first prediction block of a current block, generating a second prediction block of the current block and generating a final prediction sample of the current block using a sample unit weighted sum of the first prediction block and the second prediction block, wherein a weight used for the sample unit weighted sum is determined based on a location of a current luma sample and a geometric prediction mode (GPM) boundary line for partitioning the current block.
    Type: Application
    Filed: July 17, 2024
    Publication date: December 5, 2024
    Applicants: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, INDUSTRY-UNIVERSITY COOPERATION FOUNDATION KOREA AEROSPACE UNIVERSITY
    Inventors: Jin Ho Lee, Jung Won Kang, Ha Hyun Lee, Sung Chang Lim, Jae Gon Kim, Ji Hoon Do, Do Hyeon Park, Yong Uk Yoon
  • Publication number: 20240406436
    Abstract: Disclosed herein are a method, an apparatus and a storage medium for image encoding/decoding. In typical image encoding/decoding methods, a decoder-side motion information derivation method may be limitedly used. Therefore, the improvement of encoding efficiency attributable to the decoder-side motion information derivation method may also be limited. In embodiments, a motion information search method used in inter-prediction is disclosed. With the use of various motion search methods, encoding efficiency in inter-prediction may be improved.
    Type: Application
    Filed: September 29, 2022
    Publication date: December 5, 2024
    Inventors: Dong-Hyun KIM, Se-Yoon JEONG, Hyoung-Jin KWON, Youn-Hee KIM, Jong-Ho KIM, Ji-Hoon DO, Joo-Young LEE, Woong LIM, Jin-Soo CHOI, Tae-Jin LEE
  • Patent number: 12154302
    Abstract: Disclosed herein are a method, an apparatus and a storage medium for image encoding/decoding using a binary mask. An encoding method includes generating a latent vector using an input image, generating a selected latent vector component set using a binary mask, and generating a main bitstream by performing entropy encoding on the selected latent vector component set. A decoding method includes generating a selected latent vector component set including one or more selected latent vector components by performing entropy decoding on a main bitstream and generating the latent vector in which the one or more selected latent vector components are relocated by relocating the selected latent vector component set in the latent vector.
    Type: Grant
    Filed: December 3, 2021
    Date of Patent: November 26, 2024
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Joo-Young Lee, Se-Yoon Jeong, Hyoung-Jin Kwon, Dong-Hyun Kim, Youn-Hee Kim, Jong-Ho Kim, Ji-Hoon Do, Jin-Soo Choi, Tae-Jin Lee
  • Publication number: 20240388722
    Abstract: Disclosed herein is a video decoding method including determining a zero-out width threshold and a zero-out height threshold for distinguishing between a transform coefficient coding region and a zero-out region of a current block according to a size of the current block, determining the transform coefficient coding region and the zero-out region of the current block according to the zero-out width threshold and the zero-out height threshold, acquiring transform coefficient information of the transform coefficient coding region from a bitstream and determining a level of a transform coefficient of the transform coefficient coding region according to the transform coefficient information, determining a level of a transform coefficient of the zero-out region as 0 without acquiring transform coefficient information, and reconstructing the current block by inversely transforming the transform coefficient of the current block.
    Type: Application
    Filed: July 26, 2024
    Publication date: November 21, 2024
    Applicants: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, INDUSTRY-UNIVERSITY COOPERATION FOUNDATION KOREA AEROSPACE UNIVERSITY
    Inventors: Jin Ho LEE, Jung Won KANG, Ha Hyun LEE, Sung Chang LIM, Hui Yong KIM, Jae Gon KIM, Do Hyeon PARK, Ji Hoon DO, Yong Uk YOON
  • Patent number: 12149688
    Abstract: The present invention provides a method and device wherein segmentation information for a current picture is encoded/decoded, and the current picture is segmented into at least one of sub-picture units, slice units, and tile units according to the encoded/decoded segmentation information.
    Type: Grant
    Filed: August 11, 2020
    Date of Patent: November 19, 2024
    Assignee: HANWHA VISION CO., LTD.
    Inventors: Jae Gon Kim, Ji Hoon Do, Do Heon Park, Yong Uk Yoon
  • Publication number: 20240372982
    Abstract: Disclosed therein are a method, an apparatus, and a storage medium for image encoding/decoding. Templating matching is used for prediction for a target block. Prediction information to be applied to encoding of the target block is determined, and prediction for the target block that uses the determined prediction information is performed. The prediction information includes a list and multiple candidates in the list. When the multiple candidates in the list are configured, template matching between blocks may be used. A candidate selected from among multiple candidates configured using template matching is used for prediction for the target block.
    Type: Application
    Filed: July 26, 2022
    Publication date: November 7, 2024
    Inventors: Woong LIM, Hyoung-Jin KWON, Dong-Hyun KIM, Youn-Hee KIM, Jong-Ho KIM, Ji-Hoon DO, Joo-Young LEE, Se-Yoon JEONG, Jin-Soo CHOI, Tae-Jin LEE, Hae-Chul CHOI, Dae-Hyeok GWON, Hee-Ji HAN
  • Patent number: 12081733
    Abstract: An image encoding and decoding method comprises the steps of: determining an inter-component prediction mode of a chrominance component block on the basis of an inter-component prediction mode list and predetermined index information; determining a reference sample for inter-component prediction of the chrominance component block on the basis of the determined inter-component prediction mode; deriving the parameters of a linear prediction model by using the reference sample; and performing inter-component prediction for the chrominance component block by using the parameters of the linear prediction model.
    Type: Grant
    Filed: November 22, 2019
    Date of Patent: September 3, 2024
    Assignee: INTELLECTUAL DISCOVERY CO., LTD.
    Inventors: Jae Gon Kim, Do Hyeon Park, Yong Uk Yoon, Ji Hoon Do
  • Patent number: 12081768
    Abstract: Disclosed herein are an image encoding/decoding method and apparatus. The image decoding method of the present disclosure may include obtaining maximum transform block size information, deriving a maximum transform block size on the basis of the maximum transform block size information, and, determining ether or not a secondary inverse transform is applied to the current block on the basis of the maximum transform block size and a horizontal size and a vertical size of a current block.
    Type: Grant
    Filed: June 19, 2020
    Date of Patent: September 3, 2024
    Assignees: Electronics and Telecommunications Research Institute, INDUSTRY-UNIVERSITY COOPERATION FOUNDATION KOREA AEROSPACE UNIVERSITY
    Inventors: Jin Ho Lee, Jung Won Kang, Ha Hyun Lee, Sung Chang Lim, Hui Yong Kim, Jae Gon Kim, Do Hyeon Park, Ji Hoon Do, Yong Uk Yoon
  • Patent number: 12081774
    Abstract: Disclosed herein is a video decoding method including determining a zero-out width threshold and a zero-out height threshold for distinguishing between a transform coefficient coding region and a zero-out region of a current block according to a size of the current block, determining the transform coefficient coding region and the zero-out region of the current block according to the zero-out width threshold and the zero-out height threshold, acquiring transform coefficient information of the transform coefficient coding region from a bitstream and determining a level of a transform coefficient of the transform coefficient coding region according to the transform coefficient information, determining a level of a transform coefficient of the zero-out region as 0 without acquiring transform coefficient information, and reconstructing the current block by inversely transforming the transform coefficient of the current block.
    Type: Grant
    Filed: May 29, 2020
    Date of Patent: September 3, 2024
    Assignees: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, INDUSTRY-UNIVERSITY COOPERATION FOUNDATION KOREA AEROSPACE UNIVERSITY KOREA
    Inventors: Jin Ho Lee, Jung Won Kang, Ha Hyun Lee, Sung Chang Lim, Hui Yong Kim, Jae Gon Kim, Do Hyeon Park, Ji Hoon Do, Yong Uk Yoon
  • Patent number: 12075028
    Abstract: An image encoding/decoding method and apparatus are disclosed. The method of decoding an image according to the present invention, comprises, generating a first prediction block of a current block, generating a second prediction block of the current block and generating a final prediction sample of the current block using a sample unit weighted sum of the first prediction block and the second prediction block, wherein a weight used for the sample unit weighted sum is determined based on a location of a current luma sample and a geometric prediction mode (GPM) boundary line for partitioning the current block.
    Type: Grant
    Filed: September 21, 2020
    Date of Patent: August 27, 2024
    Assignees: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, INDUSTRY-UNIVERSITY COOPERATION FOUNDATION KOREA AEROSPACE
    Inventors: Jin Ho Lee, Jung Won Kang, Ha Hyun Lee, Sung Chang Lim, Jae Gon Kim, Ji Hoon Do, Do Hyeon Park, Yong Uk Yoon