Patents by Inventor Jung-Won Kang

Jung-Won Kang 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).

  • METHOD AND DEVICE FOR FILTERING
    Publication number: 20230032574
    Abstract: Disclosed herein are a video decoding method and apparatus and a video encoding method and apparatus, and more particularly, a method and apparatus for performing filtering in video encoding and decoding. An encoding apparatus may perform filtering on a target, and may generate filtering information indicating whether filtering has been performed on the target. Further, the encoding apparatus may generate a bitstream including filtering information. A decoding apparatus may determine, based on filtering information, whether to perform filtering on a target, and may perform filtering on the target. The decoding apparatus may receive filtering information from the encoding apparatus through a bitstream or may derive filtering information using additional information.
    Type: Application
    Filed: October 13, 2022
    Publication date: February 2, 2023
    Applicants: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, INDUSTRY-ACADEMIA COOPERATION GROUP OF SEJONG UNIVERSITY
    Inventors: Sung-Chang LIM, Jung-Won KANG, Hyunsuk KO, Jin-Ho LEE, Ha-Hyun LEE, Dong-San JUN, Seung-Hyun CHO, Hui-Yong KIM, Yung-Lyul LEE, Jun-Woo CHOI, Jin-Soo CHOI, Nam-Uk KIM, Myung-Jun KIM
  • IMAGE INFORMATION DECODING METHOD, IMAGE DECODING METHOD, AND DEVICE USING SAME
    Publication number: 20230035462
    Abstract: The present invention relates to an image information decoding method. The decoding method includes receiving a bit stream including a Network Abstraction Layer (NAL) unit that includes information related to encoded image, and parsing a NAL unit header of the NAL unit. The NAL unit header may not include 1 bit flag information that represents whether a picture is a non-reference picture or a reference picture in the entire bit stream during encoding.
    Type: Application
    Filed: September 22, 2022
    Publication date: February 2, 2023
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Jung Won Kang, Ha Hyun Lee, Jin Soo Choi, Jin Woong Kim
  • Intra prediction mode encoding/decoding method and device, and recording medium in which bitstream is stored
    Patent number: 11570428
    Abstract: There is provided a method and apparatus of encoding/decoding an intra prediction mode. The method comprises deriving an intra prediction mode with respect to a current block, constructing a reference sample for the current block on the basis of the derived intra prediction mode, and performing the intra prediction with respect to the current block using the derived intra prediction mode and the constructed reference sample, wherein the intra prediction mode is derived on the basis of a most probable mode (MPM).
    Type: Grant
    Filed: September 19, 2019
    Date of Patent: January 31, 2023
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Sung Chang Lim, Jung Won Kang, Ha Hyun Lee, Jin Ho Lee, Hui Yong Kim
  • Image encoding/decoding method and apparatus, and recording medium storing bitstream
    Patent number: 11570440
    Abstract: An image decoding method is disclosed in the present specification. A method of decoding an image, the method may comprises determining whether to perform a context update for a first syntax element of a current block, updating, on the basis of the determination, a context for entropy decoding of the first syntax element and generating, on the basis of the updated context, a bin for the first syntax element, and wherein whether to perform the context update is determined on the basis of the number of pre-decoded predetermined syntax elements for the current block.
    Type: Grant
    Filed: November 21, 2019
    Date of Patent: January 31, 2023
    Assignees: Electronics and Telecommunications Research Institute, CHIPS & MEDIA, INC
    Inventors: Sung Chang Lim, Jung Won Kang, Ha Hyun Lee, Jin Ho Lee, Hui Yong Kim, Dae Yeon Kim, Wook Je Jeong, Hyun Gyu Kim
  • IMAGE ENCODING/DECODING METHOD AND APPARATUS, AND RECORDING MEDIUM STORING BITSTREAM
    Publication number: 20230024781
    Abstract: The present specification discloses a method of decoding an image. The method of decoding an image according to the method includes: obtaining transform skip information of a current block from a bitstream; obtaining multiple transform selection information of the current block on the basis of the transform skip information from the bitstream; and performing inverse transform on the current block on the basis of the multiple transform selection information, wherein the multiple transform selection information is used to set each of a horizontal transform type and a vertical transform type.
    Type: Application
    Filed: September 30, 2022
    Publication date: January 26, 2023
    Applicants: Electronics and Telecommunications Research Institute, RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY
    Inventors: Jung Won KANG, Ha Hyun LEE, Sung Chang LIM, Jin Ho LEE, Hui Yong KIM, Byeung Woo JEON, Jee Yoon PARK
  • Method and device for image encoding/decoding on basis of asymmetric sub-block
    Patent number: 11563954
    Abstract: The present invention relates to a video encoding/decoding method and apparatus. The video decoding method according to the present invention may comprise dividing a coding unit into a plurality of sub-units according to a block division structure and performing decoding based on the sub-unit, wherein the block division structure is a block division structure in which division is performed so as to include at least one sub-unit having a predetermined block form other than square and rectangle forms.
    Type: Grant
    Filed: October 26, 2018
    Date of Patent: January 24, 2023
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Dong San Jun, Ha Hyun Lee, Jung Won Kang, Hyun Suk Ko, Sung Chang Lim, Jin Ho Lee, Hui Yong Kim
  • IMAGE ENCODING/DECODING METHOD AND APPARATUS, AND RECORDING MEDIUM IN WHICH BITSTREAM IS STORED
    Publication number: 20230015638
    Abstract: Disclosed herein are an image encoding/decoding method and apparatus. The image decoding method includes acquiring a partitioning index of a current block from a bitstream, and generating a prediction sample of the current block by weighted-summing a prediction sample of a first subblock of the current block and a prediction sample of a second subblock of the current block based on the partitioning index. The partitioning index indicates a partitioning distance and a partitioning direction included in a predefined table.
    Type: Application
    Filed: November 23, 2020
    Publication date: January 19, 2023
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Jin Ho LEE, Jung Won KANG, Soo Woong KIM, Gun BANG, Ha Hyun LEE, Sung Chang LIM
  • Image encoding/decoding method and device, and recording medium storing bit stream
    Patent number: 11558640
    Abstract: The present invention relates to an image encoding/decoding method and apparatus. The image decoding method according to the present invention may comprise configuring an MPM list based on intra-prediction modes of neighbor blocks of a current block and a number of frequencies of the intra-prediction modes of the neighbor blocks, deriving an intra-prediction mode of the current block based on the MPM list, and performing intra-prediction for the current block based on the intra-prediction mode.
    Type: Grant
    Filed: July 12, 2021
    Date of Patent: January 17, 2023
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Hyun Suk Ko, Sung Chang Lim, Jung Won Kang, Jin Ho Lee, Ha Hyun Lee, Dong San Jun, Hui Yong Kim
  • IMAGE ENCODING/DECODING METHOD AND DEVICE, AND RECORDING MEDIUM IN WHICH BITSTREAM IS STORED
    Publication number: 20230007829
    Abstract: The present invention relates to an image encoding/decoding method and device. The image decoding method according to the present invention comprises the steps of: decoding a prediction mode index; determining whether the prediction mode index indicates function-based intra prediction; inducing a parameter (s) for generating a function, when the prediction mode index indicates the function-based intra prediction; generating the function on the basis of the induced parameter (s); and performing intra prediction by using the generated function.
    Type: Application
    Filed: September 26, 2022
    Publication date: January 12, 2023
    Inventors: Seung Hyun CHO, Jung Won KANG, Hyun Suk KO, Sung Chang LIM, Jin Ho LEE, Ha Hyun LEE, Dong San JUN, Hui Yong KIM, Byeung Woo JEON, Nam Uk KIM, Seung Su JEON, Jin Soo CHOI
  • IMAGE ENCODING/DECODING METHOD AND APPARATUS, AND RECORDING MEDIUM STORING BITSTREAM
    Publication number: 20230007290
    Abstract: Disclosed herein is a video decoding method including: obtaining a transform skip mode flag indicating whether transform/inverse transform is skipped in a current block; when transform/inverse transform is skipped in the current block according to the transform skip mode flag, determining that secondary transform/inverse transform is skipped in the current block; and when transform/inverse transform is not skipped in the current block according to the transform skip mode flag, obtaining a transform matrix index for secondary transform/inverse transform of the current block and, determining whether secondary transform/inverse transform is skipped in the current block based on the transform matrix index.
    Type: Application
    Filed: November 26, 2020
    Publication date: January 5, 2023
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Sung Chang LIM, Jung Won KANG, Soo Woong KIM, Gun BANG, Jin Ho LEE, Ha Hyun LEE
  • IMAGE ENCODING/DECODING METHOD AND APPARATUS, AND RECORDING MEDIUM STORING BITSTREAM
    Publication number: 20230007263
    Abstract: Disclosed herein is a video decoding method. The video decoding method includes: obtaining a chroma residual joint flag of a current block indicating whether or not a chroma residual joint mode is applied to the current block; obtaining, from a bitstream, a transform skip mode flag for a luma component of the current block and a transform skip mode flag for a first chroma component; when the chroma residual joint flag indicates that a chroma residual joint mode is applied to the current block, determining whether or not a transform skip mode is applied to a second chroma component of the current block, according to the transform skip mode flag for the first chroma component; and, when the chroma residual joint flag indicates that a chroma residual joint mode is not applied to the current block, obtaining, from the bitstream, a transform skip mode flag for the second chroma component of the current block.
    Type: Application
    Filed: October 12, 2020
    Publication date: January 5, 2023
    Applicants: Electronics and Telecommunications Research Institute, RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY
    Inventors: Jung Won KANG, Ha Hyun LEE, Sung Chang LIM, Jin Ho LEE, Byeung Woo JEON, Jee Yoon PARK
  • Image encoding/decoding method and device, and recording medium storing bitstream
    Patent number: 11546605
    Abstract: An image decoding method is disclosed in the present specification. An image decoding method according to the present invention may include: determining a position of a co-located block of a current block within a co-located picture (co-located picture); determining a representative motion vector of the current block by using motion information at the position of the co-located block; and deriving motion information on a sub-block included in the current block by using the representative motion vector.
    Type: Grant
    Filed: September 20, 2019
    Date of Patent: January 3, 2023
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Ha Hyun Lee, Jung Won Kang, Sung Chang Lim, Jin Ho Lee, Hui Yong Kim
  • Video encoding/decoding method and apparatus, and recording medium in which bit stream is stored
    Patent number: 11539943
    Abstract: An image encoding/decoding method and apparatus are provided. An image decoding method performed by an image decoding apparatus according to the present invention may comprise deriving an intra-prediction mode of a current block, and performing intra-prediction for the current block based on the intra-prediction mode. The deriving of the intra-prediction mode may comprise decoding a predetermined mode sameness indicator.
    Type: Grant
    Filed: May 13, 2021
    Date of Patent: December 27, 2022
    Assignees: Electronics and Telecommunications Research Institute, Industry-University Cooperation Foundation Korea Aerospace University, Hanbat National University Industry-Academic Cooperation Foundation
    Inventors: Jin Ho Lee, Sung Chang Lim, Jung Won Kang, Hyun Suk Ko, Ha Hyun Lee, Dong San Jun, Seung Hyun Cho, Hui Yong Kim, Jae Gon Kim, Do Hyeon Park, Jin Soo Choi, Hae Chul Choi
  • METHOD AND DEVICE FOR ENCODING/DECODING IMAGE USING GEOMETRICALLY MODIFIED PICTURE
    Publication number: 20220408083
    Abstract: The present invention relates to a method and apparatus for video encoding/decoding by using a geometric modified picture. The encoding method according to the present invention includes: generating a geometric modified picture by geometrically modifying a reference picture; and generating a first prediction block of a current block by performing inter prediction referencing the geometric modified picture.
    Type: Application
    Filed: August 17, 2022
    Publication date: December 22, 2022
    Inventors: Jung Won KANG, Hyun Suk KO, Sung Chang LIM, Jin Ho LEE, Dong San JUN, Hui Yong KIM, Gwang Hoon PARK, Jin Soo CHOI, Tae Hyun KIM, Dae Young LEE, Young Su HEO
  • CONTEXT ADAPTIVE BINARY ARITHMETIC CODING METHOD AND DEVICE
    Publication number: 20220408091
    Abstract: There is provided an video encoding/decoding method and apparatus. The video decoding method comprises acquiring a bitstream including a predetermined context element, performing at least one of a context model determination, a probability update, and a probability interval determination on the predetermined syntax element, and arithmetically decoding the predetermined syntax element on the basis of a result of the performance.
    Type: Application
    Filed: August 24, 2022
    Publication date: December 22, 2022
    Applicants: Electronics and Telecommunications Research Institute, INDUSTRY-UNIVERSITY COOPERATION FOUNDATION KOREA AEROSPACE UNIVERSITY, INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY
    Inventors: Jin Ho LEE, Jung Won KANG, Ha Hyun LEE, Sung Chang LIM, Hui Yong KIM, Jae Gon KIM, Do Hyeon PARK, Yong Uk YOON, Yung Lyul LEE
  • ADAPTIVE IN-LOOP FILTERING METHOD AND DEVICE
    Publication number: 20220408085
    Abstract: The present invention relates to a video decoding method, according to embodiment of the invention, image decoding method comprises, acquiring a reconstructed luma block of a current block, determining whether a cross-component adaptive loop filter is applied to the current block, acquiring a reconstructed chroma block of the current block, to which an adaptive loop filter is applied, when the cross-component adaptive loop filter is applied to the current block and acquiring a final reconstructed chroma block of the current block, to which the cross-component loop filter is applied, using the reconstructed luma block and the reconstructed chroma block, to which the adaptive loop filter is applied.
    Type: Application
    Filed: November 23, 2020
    Publication date: December 22, 2022
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Sung Chang LIM, Jung Won KANG, Soo Woong KIM, Gun BANG, Jin Ho LEE, Ha Hyun LEE
  • IMAGE ENCODING/DECODING METHOD AND DEVICE, AND RECORDING MEDIUM IN WHICH BITSTREAM IS STORED
    Publication number: 20220408110
    Abstract: Disclosed herein is a method of decoding an image. The method includes generating an inter prediction block by performing inter prediction with respect to a current block, generating an intra prediction block by performing intra prediction with respect to the current block, determining a first weight and a second weight, and generating a final prediction block by respectively applying the first weight and the second weight to the inter prediction block and the intra prediction block. The generating of the intra prediction block includes generating the intra prediction block using a predefined intra prediction mode.
    Type: Application
    Filed: August 18, 2022
    Publication date: December 22, 2022
    Applicants: Electronics and Telecommunications Research Institute, INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY, CHIPS&MEDIA, INC, INDUSTRY-UNIVERSITY COOPERATION FOUNDATION KOREA AEROSPACE UNIVERSITY
    Inventors: Sung Chang LIM, Jung Won KANG, Ha Hyun LEE, Jin Ho LEE, Hui Yong KIM, Yung Lyul LEE, Ji Yeon JUNG, Nam Uk KIM, Myung Jun KIM, Yang Woo KIM, Dae Yeon KIM, Jae Gon KIM
  • IMAGE PROCESSING METHOD, AND IMAGE ENCODING/DECODING METHOD AND DEVICE WHICH USE SAME
    Publication number: 20220385895
    Abstract: The present invention relates to an image encoding/decoding method and apparatus. The image decoding method according to the present invention may comprise acquiring transform coefficients distribution information of a neighboring block from a bitstream; direction-adaptively determining an intra prediction mode of a current block to be decoded, according to the transform coefficients distribution information of the neighboring block; and reconstructing the current block, based on the determined intra prediction mode, wherein the direction-adaptively determining includes determining similarity flag information corresponding to the neighboring block, based on the transform coefficients distribution information of the neighboring block.
    Type: Application
    Filed: August 10, 2022
    Publication date: December 1, 2022
    Applicants: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, CHIPS&MEDIA,INC, INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY
    Inventors: Jin Ho LEE, Jung Won KANG, Ha Hyun LEE, Sung Chang LIM, Hui Yong KIM, Dae Yeon KIM, Yung Lyul LEE
  • IMAGE ENCODING/DECODING METHOD AND DEVICE, AND RECORDING MEDIUM STORING BITSTREAM
    Publication number: 20220385888
    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: September 21, 2020
    Publication date: December 1, 2022
    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
  • METHOD AND APPARATUS FOR ENCODING/DECODING INTRA PREDICTION MODE
    Publication number: 20220385887
    Abstract: Provided are method and apparatus methods and apparatuses for encoding an intra-prediction mode based on a secondary IPM. The present invention may comprises a first decision step of determining whether an intra-prediction mode of a current block is included in a first candidate mode set including M candidate modes (M is an integer equal to or greater than 1); a second decision step of determining whether the intra-prediction mode of the current block is included in a second candidate mode set including N candidate modes (N is an integer equal to or greater than 1) based on a first determination result representing a determination result of the first decision step; and an intra prediction mode encoding step of encoding the intra-prediction mode of the current block based on the first determination result or a second determination result representing a determination result of the second decision step.
    Type: Application
    Filed: August 11, 2022
    Publication date: December 1, 2022
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Dong San JUN, Jung Won KANG, Sung Chang LIM, Hyun Suk KO, Jin Ho LEE, Hui Yong KIM, Jin Soo CHOI