Patents by Inventor Dong-San Jun

Dong-San Jun 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).

  • Image encoding/decoding method and device, and recording medium in which bitstream is stored
    Patent number: 11368681
    Abstract: The present invention relates to an image encoding/decoding method and apparatus. An image decoding method performing intra prediction according to the present invention may comprise dividing a current block into at least one sub-block; deriving an intra prediction mode for the at least one sub-block; constructing a reference sample for the intra prediction; and performing intra prediction for the at least one sub-block based on the derived intra prediction mode.
    Type: Grant
    Filed: July 17, 2017
    Date of Patent: June 21, 2022
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Jin Ho Lee, Sung Chang Lim, Jung Won Kang, Hyun Suk Ko, Dong San Jun, Ha Hyun Lee, Seung Hyun Cho, Hui Yong Kim, Jin Soo Choi
  • Image encoding/decoding method and device, and recording medium storing bitstream
    Patent number: 11350107
    Abstract: An image encoding/decoding method and apparatus for performing template matching-based intra prediction are provided. An image decoding method may comprise deriving a first intra-prediction mode for a current block, generating a first intra-prediction block corresponding to the first intra-prediction mode, deriving a second intra-prediction mode for the current block, generating a second intra-prediction block corresponding to the second intra-prediction mode, and generating a final intra-prediction block by using a weighted sum of the first intra-prediction block and the second intra-prediction block.
    Type: Grant
    Filed: November 16, 2018
    Date of Patent: May 31, 2022
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Dong San Jun, Sung Chang Lim, Jung Won Kang, Hyun Suk Ko, Jin Ho Lee, Ha Hyun Lee, Hui Yong Kim
  • BLOCK FORM-BASED PREDICTION METHOD AND DEVICE
    Publication number: 20220166977
    Abstract: Disclosed herein are a video decoding method and apparatus and a video encoding method and apparatus. In video encoding and decoding, multiple partition blocks are generated by splitting a target block. A prediction mode is derived for at least a part of the multiple partition blocks, among the multiple partition blocks, and prediction is performed on the multiple partition blocks based on the derived prediction mode. When prediction is performed on the partition blocks, information related to the target block may be used, and information related to an additional partition block, which is predicted prior to the partition block, may be used.
    Type: Application
    Filed: February 8, 2022
    Publication date: May 26, 2022
    Applicants: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, INDUSTRY-UNIVERSITY COOPERATION FOUNDATION KOREA AEROSPACE UNIVERSITY, HANBAT NATIONAL UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION
    Inventors: Jin-Ho Lee, Jung-Won Kang, Hyunsuk Ko, Sung-Chang Lim, Dong-San Jun, Ha-Hyun Lee, Seung-Hyun Cho, Hui-Yong Kim, Hae-Chul Choi, Dae-Hyeok Gwon, Jae-Gon Kim, A-Ram Back
  • Image encoding/decoding method and device, and recording medium having bitstream stored thereon
    Patent number: 11343530
    Abstract: The present invention relates to a method for encoding and decoding an image. The method for decoding an image includes: deriving an initial motion vector from a merge candidate list of a current block; deriving a refined motion vector using the initial motion vector; and generating a prediction block of the current block using the refined motion vector.
    Type: Grant
    Filed: November 28, 2017
    Date of Patent: May 24, 2022
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Ha Hyun Lee, Jung Won Kang, Hyun Suk Ko, Sung Chang Lim, Jin Ho Lee, Dong San Jun, Seung Hyun Cho, Hui Yong Kim, Jin Soo Choi
  • Image encoding/decoding image method and device, and recording medium storing bit stream
    Patent number: 11343490
    Abstract: An image encoding/decoding method and apparatus are provided. An image encoding method performed by an image encoding apparatus may comprise determining an intra-prediction mode of a current block, configuring a reference sample of intra prediction by using at least one of a neighbor pixel of the current block in a current picture and a pixel of a reference picture, and performing intra prediction for the current block based on the intra-prediction mode and the reference sample.
    Type: Grant
    Filed: September 29, 2020
    Date of Patent: May 24, 2022
    Assignees: Electronics and Telecommunications Research Institute, University-Industry Cooperation Group of Kyung Hee University
    Inventors: Jung Won Kang, Hyun Suk Ko, Sung Chang Lim, Jin Ho Lee, Ha Hyun Lee, Dong San Jun, Seung Hyun Cho, Hui Yong Kim, Jin Soo Choi, Gwang Hoon Park, Tae Hyun Kim, Dae Young Lee
  • IMAGE ENCODING/DECODING METHOD AND APPARATUS WITH SUB-BLOCK INTRA PREDICTION
    Publication number: 20220159271
    Abstract: An image encoding/decoding method and apparatus for performing intra prediction are provided. An image decoding method of the present invention comprises deriving an intra prediction mode for a current block, selecting at least one reconstructed sample line neighboring to the current block, constructing a reference sample using at least one reconstructed sample included in the at least one reconstructed sample line, and performing intra prediction for the current block based on the intra prediction mode and the reference sample.
    Type: Application
    Filed: February 3, 2022
    Publication date: May 19, 2022
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Dong San JUN, Jin Ho LEE, Jung Won KANG, Hyun Suk KO, Sung Chang LIM, Ha Hyun LEE, Seung Hyun CHO, Hui Yong KIM, Jin Soo CHOI
  • Method and apparatus for encoding/decoding a video using a motion compensation
    Patent number: 11336899
    Abstract: The present invention relates to a method for encoding/decoding a video. To this end, the method for decoding a video may include: deriving a spatial merge candidate from at least one of spatial candidate blocks of a current block, deriving a temporal merge candidate from a co-located block of the current block, and generating a prediction block of the current block based on at least one of the derived spatial merge candidate and the derived temporal merge candidate, wherein a reference picture for the temporal merge candidate is selected based on a reference picture list of a current picture including the current block and a reference picture list of a co-located picture including the co-located block.
    Type: Grant
    Filed: August 9, 2017
    Date of Patent: May 17, 2022
    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, Seung Hyun Cho, Hui Yong Kim, Jin Soo Choi
  • Method and apparatus for encoding and decoding using selective information sharing between channels
    Patent number: 11310517
    Abstract: Disclosed herein are a video decoding method and apparatus and a video encoding method and apparatus. Coding decision information of a representative channel of a target block is shared as coding decision information of a target channel of the target block, and decoding of the target block is performed using the coding decision information of the target channel. Since the coding decision information of the representative channel is shared with an additional channel, repeated signaling of identical coding decision information may be prevented. By means of this prevention, the efficiency of encoding and decoding of the target block or the like may be improved.
    Type: Grant
    Filed: December 7, 2018
    Date of Patent: April 19, 2022
    Assignees: Electronics and Telecommunications Research Institute, RESEARCH AND BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY
    Inventors: Dong-San Jun, Jung-Won Kang, Hyunsuk Ko, Sung-Chang Lim, Jin-Ho Lee, Ha-Hyun Lee, Byeung-Woo Jeon, Hui-Yong Kim, Jee-Yoon Park
  • METHOD FOR ENCODING/DECODING IMAGE SIGNAL, AND DEVICE THEREFOR
    Publication number: 20220109835
    Abstract: An image decoding method according to the present invention may comprise: determining a division type of a coding block; on the basis of the determined division type, dividing the coding block into a first prediction unit and a second prediction unit; deriving movement information of each of the first prediction unit and the second prediction unit; and on the basis of the derived movement information, acquiring prediction samples for the first prediction unit and the second prediction unit.
    Type: Application
    Filed: March 11, 2020
    Publication date: April 7, 2022
    Inventors: Bae Keun LEE, Dong San JUN
  • Image encoding/decoding method and device employing in-loop filtering
    Patent number: 11290715
    Abstract: The present invention relates to a video encoding/decoding method and apparatus. The video decoding method according to the present invention may comprise decoding filter information on a coding unit; classifying samples in the coding unit into classes on a per block classification unit basis; and filtering the coding unit having the samples classified into the classes on a per block classification unit basis by using the filter information.
    Type: Grant
    Filed: November 29, 2018
    Date of Patent: March 29, 2022
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Sung Chang Lim, Jung Won Kang, Ha Hyun Lee, Dong San Jun, Hyun Suk Ko, Jin Ho Lee, Hui Yong Kim
  • Block form-based prediction method and device
    Patent number: 11284076
    Abstract: Disclosed herein are a video decoding method and apparatus and a video encoding method and apparatus. In video encoding and decoding, multiple partition blocks are generated by splitting a target block. A prediction mode is derived for at least a part of the multiple partition blocks, among the multiple partition blocks, and prediction is performed on the multiple partition blocks based on the derived prediction mode. When prediction is performed on the partition blocks, information related to the target block may be used, and information related to an additional partition block, which is predicted prior to the partition block, may be used.
    Type: Grant
    Filed: March 22, 2018
    Date of Patent: March 22, 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, Jung-Won Kang, Hyunsuk Ko, Sung-Chang Lim, Dong-San Jun, Ha-Hyun Lee, Seung-Hyun Cho, Hui-Yong Kim, Hae-Chul Choi, Dae-Hyeok Gwon, Jae-Gon Kim, A-Ram Back
  • METHOD AND APPARATUS FOR ENCODING/DECODING IMAGES USING A MOTION VECTOR
    Publication number: 20220086479
    Abstract: The present invention relates to image processing, and more particularly, to a video coding/decoding method using a clipped motion vector and an apparatus thereof. An embodiment of the present invention relates to a method of decoding an image. The method includes clipping a motion vector of a reference picture in a predetermined dynamic range to generate a clipped motion vector, storing the clipped motion vector in a buffer, deriving a motion vector of a coding treeblock using the motion vector stored in the buffer, and performing inter prediction decoding process using the motion vector of the coding treeblock. According to the exemplary embodiment of the present invention, a size of a memory required for storing motion vectors may be reduced.
    Type: Application
    Filed: November 30, 2021
    Publication date: March 17, 2022
    Inventors: Sung Chang Lim, Hui Yong Kim, Se Yoon Jeong, Suk Hee Cho, Dong San Jun, Jong Ho Kim, Ha Hyun Lee, Jin Ho Lee, Jin Soo Choi, Jin Woong Kim
  • BIDIRECTIONAL INTRA PREDICTION METHOD AND APPARATUS
    Publication number: 20220078485
    Abstract: Disclosed herein are a video decoding method and apparatus and a video encoding method and apparatus. Encoding and decoding of a target block are performed using intra-prediction. The intra-prediction is intra-prediction that uses bidirectional intra-prediction and a remaining mode. In bidirectional intra-prediction, a prediction value for a target pixel in the target block is determined based on reference pixels in two directions of bidirectional intra-prediction. In intra-prediction using a remaining mode, the remaining mode indicates remaining intra-prediction modes other than MPMs present in an MPM list.
    Type: Application
    Filed: November 18, 2021
    Publication date: March 10, 2022
    Applicants: Electronics and Telecommunications Research Institute, HANBAT NATIONAL UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION
    Inventors: Hyunsuk KO, Jung-Won KANG, Sung-Chang LIM, Jin-Ho LEE, Ha-Hyun LEE, Dong-San JUN, Hae-Chul CHOI, Hui-Yong KIM, A-Ram BACK
  • METHOD AND APPARATUS FOR IMAGE ENCODING/DECODING, AND RECORDING MEDIUM STORING BITSTREAM
    Publication number: 20220070474
    Abstract: An image encoding/decoding method and apparatus for performing intra prediction mode based intra prediction are provided. An image decoding method may comprise decoding an intra prediction mode of a current block, deriving at least one intra prediction mode from the decoded intra prediction mode of the current block, generating two or more intra prediction blocks using the intra prediction mode of the current block and the derived intra prediction mode, and generating an intra prediction block of the current block based on the two or more intra prediction blocks.
    Type: Application
    Filed: November 11, 2021
    Publication date: March 3, 2022
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Sung Chang LIM, Hyun Suk KO, Jung Won KANG, Jin Ho LEE, Ha Hyun LEE, Dong San JUN, Hui Yong KIM
  • VIDEO ENCODING/DECODING METHOD AND APPARATUS
    Publication number: 20220070457
    Abstract: A video signal encoding/decoding method and apparatus according to the present invention divide a current block into two prediction units, construct a list of merge candidates for the current block, derive motion information of the current block using a merge candidate index and the list of merge candidates of the current block, and perform inter-prediction of the current block using the derived motion information.
    Type: Application
    Filed: December 27, 2019
    Publication date: March 3, 2022
    Applicant: INTELLECTUAL DISCOVERY CO., LTD.
    Inventors: Bae Keun Bae Keun LEE, Dong San JUN
  • IMAGE ENCODING/DECODING METHOD AND DEVICE
    Publication number: 20220070452
    Abstract: The video encoding/decoding method and device according to the present invention can determine an intra prediction mode of a chroma block, specify a luminance area for inter-component reference of the chroma block, downsample the specified luminance area, derive parameters for the inter-component reference of the chroma block, apply the parameters to the downsampled luminance area, and thereby predict the chroma block.
    Type: Application
    Filed: December 27, 2019
    Publication date: March 3, 2022
    Applicant: INTELLECTUAL DISCOVERY CO., LTD.
    Inventors: Bae Keun LEE, Dong San JUN
  • VIDEO ENCODING/DECODING METHOD AND DEVICE, AND RECORDING MEDIUM HAVING BITSTREAM STORED THEREIN
    Publication number: 20220070450
    Abstract: An image encoding/decoding method and apparatus for performing intra prediction are provided. An image decoding method of the present invention comprises deriving an intra-prediction mode for a current block, determining whether or not a left boundary or an upper boundary of the current block is a boundary of a predetermined image region, configuring a reference sample by using at least one reconstructed sample included in at least one reconstructed sample line adjacent to the current block based on the determination result, and performing intra-prediction for the current block based on the intra-prediction mode and the reference sample.
    Type: Application
    Filed: August 13, 2021
    Publication date: March 3, 2022
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Seung Hyun CHO, Jung Won KANG, Sung Chang LIM, Hyun Suk KO, Dong San JUN, Jin Ho LEE, Ha Hyun LEE, Hui Yong KIM, Jin Soo CHOI
  • IMAGE ENCODING/DECODING METHOD AND DEVICE
    Publication number: 20220070468
    Abstract: The image encoding/decoding method and device according to the present invention can construct a merge candidate list of a current block, derive motion information of the current block on the basis of the merge candidate list and a merge index of the current block, derive a motion vector difference of the current block, correct a motion vector of the current block by means of the motion vector difference, and carry out motion compensation on the current block by means of the corrected motion vector.
    Type: Application
    Filed: December 27, 2019
    Publication date: March 3, 2022
    Applicant: INTELLECTUAL DISCOVERY CO., LTD.
    Inventors: Bae Keun LEE, Dong San JUN
  • METHOD AND DEVICE FOR ENCODING/DECODING IMAGE, AND RECORDING MEDIUM STORING BIT STREAM
    Publication number: 20220070446
    Abstract: An image encoding/decoding method and apparatus for predicting a second color component block using a first color component block are provided. An image decoding method of the present invention comprises deriving a prediction parameter using the first color component block, and predicting the second color component block using the derived prediction parameter.
    Type: Application
    Filed: November 10, 2021
    Publication date: March 3, 2022
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Jin Ho LEE, Hyun Suk KO, Jung Won KANG, Sung Chang LIM, Ha Hyun LEE, Dong San JUN, Seung Hyun CHO, Hui Yong KIM, Jin Soo CHOI
  • IMAGE ENCODING/DECODING METHOD AND RECORDING MEDIUM FOR SAME
    Publication number: 20220053197
    Abstract: The present invention relates to a method of performing motion compensation by using motion vector prediction. To this end, a method of decoding an image may include: generating multiple motion vector candidate lists according to an inter-prediction direction of a current block; deriving multiple motion vectors for the current block by using the multiple motion vector candidate lists; determining multiple prediction blocks for the current block by using the multiple motion vectors; and obtaining a final prediction block for the current block based on the multiple prediction blocks.
    Type: Application
    Filed: October 27, 2021
    Publication date: February 17, 2022
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Sung Chang Lim, Jung Won Kang, Ha Hyun Lee, Dong San Jun, Hyun Suk Ko, Jin Ho Lee, Seung Hyun Cho, Hui Yong Kim, Jin Soo Choi