Patents by Inventor Nam Uk Kim

Nam Uk Kim 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: 20220150480
    Abstract: According to the present invention, there is provided a method of decoding a video signal, the method including: determining an intra prediction mode of a current block; applying a filter to a first reference sample adjacent to the current block; obtaining a first prediction sample of the current block on the basis of the intra prediction mode and a second reference sample obtained by applying the filter; and obtaining a second prediction sample of the current block using the first prediction sample and the first reference sample.
    Type: Application
    Filed: January 24, 2022
    Publication date: May 12, 2022
    Applicant: Industry Academy Cooperation Foundation of Sejong University
    Inventors: Yung-Lyul LEE, Nam Uk KIM, Jun Woo CHOI
  • Publication number: 20220150500
    Abstract: There is provided an image encoding/decoding method and apparatus. The image decoding method comprises decoding size information of a quantization group from a bitstream, acquiring a delta quantization parameter of a current block on the basis of the size information of the quantization group, and deriving a quantization parameter for the current block on the basis of the delta quantization parameter.
    Type: Application
    Filed: January 31, 2022
    Publication date: May 12, 2022
    Applicants: Electronics and Telecommunications Research Institute, INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY, 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, Myung Jun KIM, Nam Uk KIM, Ji Youn JUNG, Yang Woo KIM, Jae Gon KIM
  • Publication number: 20220109846
    Abstract: An image encoding/decoding method is provided. An image decoding method of the present invention may comprise deriving an intra-prediction mode of a current luma block, deriving an intra-prediction mode of a current chroma block based on the intra-prediction mode of the current luma block, generating a prediction block of the current chroma block based on the intra-prediction mode of the current chroma block, and the deriving of an intra-prediction mode of a current chroma block may comprise determining whether or not CCLM (Cross-Component Linear Mode) can be performed for the current chroma block.
    Type: Application
    Filed: December 27, 2019
    Publication date: April 7, 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, Do Hyeon PARK
  • Publication number: 20220086428
    Abstract: An image encoding/decoding method is provided. An image decoding method of the present invention may comprise restoring an intra-prediction mode of a current chroma block, deriving at least one representative value based on a neighboring sample of the current chroma block and a neighboring sample of a corresponding luma block corresponding to the current chroma block in case the intra-prediction mode is a CCLM (Cross-Component Linear Model) mode, deriving a parameter of CCLM by using the at least one representative value, and generating a prediction block of the current chroma block by using the parameter of CCLM.
    Type: Application
    Filed: December 27, 2019
    Publication date: March 17, 2022
    Applicants: Electronics and Telecommunications Research Institute, INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY, 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, Myung Jun KIM, Nam Uk KIM, Yang Woo KIM, Ji Yeon JUNG, Jae Gon KIM
  • Publication number: 20220086486
    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: December 27, 2019
    Publication date: March 17, 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
  • Publication number: 20220086461
    Abstract: Disclosed herein is an image decoding method. The image decoding method according to an embodiment of the present invention includes determining a prediction mode of a current block based on at least one of sizes of the current block and generating a prediction block of the current block based on the determined prediction mode. Herein, the determining of the prediction mode of the current block determines the prediction mode of the current block based on a comparison result between the size of the current block and a preset value.
    Type: Application
    Filed: January 7, 2020
    Publication date: March 17, 2022
    Applicant: INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY
    Inventors: Yung Lyul LEE, Nam Uk KIM, Myung Jun KIM, Ji Yeon JUNG, Yang Woo KIM
  • Publication number: 20220086436
    Abstract: According to the present invention, provided is a method of processing a video signal, the method including: obtaining a transform coefficient of a current block from a bitstream according to a predetermined scanning order; determining an intra prediction mode of the current block on the basis of the transform coefficient; and performing intra prediction on the current block using the intra prediction mode and a neighboring sample adjacent to the current block.
    Type: Application
    Filed: November 23, 2021
    Publication date: March 17, 2022
    Applicant: Industry Academy Cooperation Foundation of Sejong University
    Inventors: Yung Lyul LEE, Nam Uk KIM
  • Patent number: 11277612
    Abstract: There is provided an image encoding/decoding method and apparatus. The image decoding method comprises decoding size information of a quantization group from a bitstream, acquiring a delta quantization parameter of a current block on the basis of the size information of the quantization group, and deriving a quantization parameter for the current block on the basis of the delta quantization parameter.
    Type: Grant
    Filed: June 25, 2019
    Date of Patent: March 15, 2022
    Assignees: Electronics and Telecommunications Research institute, INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY, 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, Myung Jun Kim, Nam Uk Kim, Ji Youn Jung, Yang Woo Kim, Jae Gon Kim
  • Patent number: 11272174
    Abstract: According to the present invention, there is provided a method of decoding a video signal, the method including: determining an intra prediction mode of a current block; applying a filter to a first reference sample adjacent to the current block; obtaining a first prediction sample of the current block on the basis of the intra prediction mode and a second reference sample obtained by applying the filter; and obtaining a second prediction sample of the current block using the first prediction sample and the first reference sample.
    Type: Grant
    Filed: July 14, 2020
    Date of Patent: March 8, 2022
    Assignee: Industry Academy Cooperation Foundation of Sejong University
    Inventors: Yung-Lyul Lee, Nam Uk Kim, Jun Woo Choi
  • Patent number: 11228755
    Abstract: According to the present invention, provided is a method of processing a video signal, the method including: obtaining a transform coefficient of a current block from a bitstream according to a predetermined scanning order; determining an intra prediction mode of the current block on the basis of the transform coefficient; and performing intra prediction on the current block using the intra prediction mode and a neighboring sample adjacent to the current block.
    Type: Grant
    Filed: March 17, 2017
    Date of Patent: January 18, 2022
    Assignee: Industry Academy Cooperation Foundation of Sejong University
    Inventors: Yung Lyul Lee, Nam Uk Kim
  • Publication number: 20210274223
    Abstract: In the present specification, an image decoding method is disclosed. The image decoding method includes: determining whether or not to perform filtering on a boundary of a current block; determining a filtering strength on the boundary of the current block, and a number of samples used in filtering; and performing filtering on the boundary of the current block on the basis of the filtering strength and the number of samples used in filtering, wherein the number of samples used in filtering is determined on the basis of a size of the current block.
    Type: Application
    Filed: June 28, 2019
    Publication date: September 2, 2021
    Applicants: Electronics and Telecommunications Research Institute, CHIPS&MEDIA, INC, INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY, INDUSTRY-UNIVERSITY COOPERATION FOUNDATION KOREA AEROSPACE UNIVERSITY
    Inventors: Sung Chang LIM, Jung Won KANG, Ha Hyun LEE, Jin Ho LEE, Hui Yong KIM, Dae Yeon KIM, Wook Je JEONG, Dong Jin PARK, Min Yong JEON, Yung Lyul LEE, Nam Uk KIM, Myung Jun KIM, Ji Youn JUNG, Jae Gon KIM
  • Publication number: 20210227221
    Abstract: There is provided an image encoding/decoding method and apparatus. The image decoding method comprises decoding size information of a quantization group from a bitstream, acquiring a delta quantization parameter of a current block on the basis of the size information of the quantization group, and deriving a quantization parameter for the current block on the basis of the delta quantization parameter.
    Type: Application
    Filed: June 25, 2019
    Publication date: July 22, 2021
    Applicants: Electronics and Telecommunications Research Institute, INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY, 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, Myung Jun KIM, Nam Uk KIM, Ji Youn JUNG, Yang Woo KIM, Jae Gon KIM
  • Publication number: 20210067794
    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: November 13, 2020
    Publication date: March 4, 2021
    Inventors: Seung Hyun CHO, Jung Won KANG, Hyun Suk KO, Sung Chang LIM, Jin Ho mes LEE, Ha Hyun LEE, Dong San JUN, Hui Yong KIM, Byeung Woo JEON, Nam Uk KIM, Seung Su JEON, Jin Soo CHOI
  • Publication number: 20210058646
    Abstract: According to the present invention, there is provided a video signal processing method of dividing an input image on a per-block basis for encoding, the method including: determining, at a division determination step, whether to divide a current block; dividing, at a block division step, the current block into multiple sub blocks on the basis of the determination; generating block division information on division of the current block; and encoding, at an encoding step, the block division information, the current block, or the sub blocks. Examples of division of the block according to the present invention include division using N-ary tree structures, such as the quad tree structure, the binary tree structure, and/or the triple tree structure.
    Type: Application
    Filed: October 15, 2020
    Publication date: February 25, 2021
    Applicant: INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY
    Inventors: Yung Lyul LEE, Nam Uk KIM, Kyung Hwan KO, Young Hwan YOO
  • Publication number: 20210037245
    Abstract: Disclosed herein are a decoding method and apparatus and an encoding method and apparatus that perform inter-prediction using a motion vector predictor. For a candidate block in a col picture, a scaled motion vector is generated based on a motion vector of the candidate block. When the scaled motion vector indicates a target block, a motion vector predictor of the target block is generated based on the motion vector of the candidate block. The motion vector predictor is used to derive the motion vector of the target block in a specific inter-prediction mode such as a merge mode and an AMVP mode.
    Type: Application
    Filed: January 25, 2019
    Publication date: February 4, 2021
    Applicants: Electronics and Telecommunications Research Institute, INDUSTRY-ACADEMIA COOPERATION GROUP OF SEJONG UNIVERSITY, INDUSTRY-UNIVERSITY COOPERATION FOUNDATION KOREA AEROSPACE UNIVERSITY
    Inventors: Sung-Chang LIM, Jung-Won KANG, Hyunsuk KO, Jin-Ho LEE, Ha-Hyun LEE, Dong-San JUN, Hui-Yong KIM, Yung-Lyul LEE, Nam-Uk KIM, Jae-Gon KIM
  • Patent number: 10869049
    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: Grant
    Filed: November 27, 2017
    Date of Patent: December 15, 2020
    Assignee: RESEARCH & BUSINESS FOUNDATION SUNGYUNWAN UNIVERSITY
    Inventors: Seung Hyun Cho, Jung Won Kang, Hyun Suk Ko, Sung Chang Lim, Jin Ho mes Lee, Ha Hyun Lee, Dong San Jun, Hui Yong Kim, Byeung Woo Jeon, Nam Uk Kim, Seung Su Jeon, Jin Soo Choi
  • Publication number: 20200344471
    Abstract: According to the present invention, there is provided a method of decoding a video signal, the method including: determining an intra prediction mode of a current block; applying a filter to a first reference sample adjacent to the current block; obtaining a first prediction sample of the current block on the basis of the intra prediction mode and a second reference sample obtained by applying the filter; and obtaining a second prediction sample of the current block using the first prediction sample and the first reference sample.
    Type: Application
    Filed: July 14, 2020
    Publication date: October 29, 2020
    Applicant: Industry Academy Cooperation Foundation of Sejong University
    Inventors: Yung-Lyul LEE, Nam Uk KIM, Jun Woo CHOI
  • Patent number: 10757406
    Abstract: According to the present invention, there is provided a method of decoding a video signal, the method including: determining an intra prediction mode of a current block; applying a filter to a first reference sample adjacent to the current block; obtaining a first prediction sample of the current block on the basis of the intra prediction mode and a second reference sample obtained by applying the filter; and obtaining a second prediction sample of the current block using the first prediction sample and the first reference sample.
    Type: Grant
    Filed: March 27, 2017
    Date of Patent: August 25, 2020
    Assignee: Industry Academy Cooperation Foundation of Sejong University
    Inventors: Yung-Lyul Lee, Nam Uk Kim, Jun Woo Choi
  • Publication number: 20200021828
    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: November 27, 2017
    Publication date: January 16, 2020
    Inventors: Seung Hyun CHO, Jung Won KANG, Hyun Suk KO, Sung Chang LIM, Jin Ho mes LEE, Ha Hyun LEE, Dong San JUN, Hui Yong KIM, Byeung Woo JEON, Nam Uk KIM, Seung Su JEON, Jin Soo CHOI
  • Publication number: 20190327476
    Abstract: According to the present invention, there is provided a video signal processing method of dividing an input image on a per-block basis for encoding, the method including: determining, at a division determination step, whether to divide a current block; dividing, at a block division step, the current block into multiple sub blocks on the basis of the determination; generating block division information on division of the current block; and encoding, at an encoding step, the block division information, the current block, or the sub blocks. Examples of division of the block according to the present invention include division using N-ary tree structures, such as the quad tree structure, the binary tree structure, and/or the triple tree structure.
    Type: Application
    Filed: June 23, 2017
    Publication date: October 24, 2019
    Applicant: INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY
    Inventors: Yung Lyul LEE, Nam Uk KIM, Kyung Hwan KO, Young Hwan YOO