Patents by Inventor Sea-Nae Park

Sea-Nae Park 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: 20210368191
    Abstract: A method is provided for decoding a sequence of pictures using a gradual refresh technique. In particular, all areas in one picture are gradually encoded or decoded over a plurality of pictures associated with the picture.
    Type: Application
    Filed: March 12, 2020
    Publication date: November 25, 2021
    Inventors: Dong Gyu Sim, Han Sol Choi, Jong Seok Lee, Sea Nae Park, Seung Wook Park, Wha Pyeong Lim
  • Publication number: 20210352329
    Abstract: A method and an apparatus for parallel encoding and decoding of moving picture data are provided. The method includes decoding, from a bitstream, a syntax element indicating that a picture can be decoded using wavefront parallel processing and decoding encoded data of the picture. The step of decoding encoded data of the picture includes for a first coding block of a current CTU row encoded in a palette mode, predicting a palette table for the first coding block by using palette data from a first CTU of a previous CTU row and decoding the first coding block in the palette mode using the palette table predicted for the first coding block.
    Type: Application
    Filed: May 15, 2020
    Publication date: November 11, 2021
    Inventors: Dong Gyu Sim, Sea Nae Park, Joo Hyung Byeon, Seung Wook Park, Wha Pyeong Lim
  • Publication number: 20210289201
    Abstract: There is provided an image decoding method comprising: deriving a first prediction value of a current block by using at least one sample included in a reference block, obtaining an illumination compensation parameter on the basis of a predetermined reference region, deriving a second prediction value of the current block by applying the illumination compensation parameter to the first prediction value and reconstructing the current block on the basis of the second prediction value.
    Type: Application
    Filed: July 18, 2019
    Publication date: September 16, 2021
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Gun BANG, Hui Yong KIM, Dong Gyu SIM, Seoung Jun OH, Sea Nae PARK, Jun Taek PARK, Jong Seok LEE
  • Publication number: 20210235101
    Abstract: An encoding/decoding device according to the present invention derives a residual coefficient of a residual block from a bitstream, calculates a quantization parameter for the residual block, performs inverse quantization on the residual coefficient by using the quantization parameter, and performs inverse conversion on the inversely quantized residual coefficient, thereby enabling restoration of a residual sample of the residual block.
    Type: Application
    Filed: June 10, 2019
    Publication date: July 29, 2021
    Inventors: Dong Gyu SIM, Sea Nae PARK
  • Publication number: 20210235086
    Abstract: An encoding/decoding device according to the present invention derives the residual coefficient of a residual block, calculates a quantization parameter with respect to the residual block, performs inverse quantization for the residual coefficient by means of the quantization parameter, and can restore a residual sample of the residual block by performing inverse transformation for the inverse quantized residual coefficient.
    Type: Application
    Filed: June 10, 2019
    Publication date: July 29, 2021
    Inventors: Dong Gyu SIM, Sea Nae PARK, Jong Seok LEE
  • Patent number: 11064201
    Abstract: A method for image decoding includes: a step of parsing division depth information and division direction information of a block to be decoded; a step of acquiring division structure information, of a unit to be decoded in the block, corresponding to the parsed division depth information and division direction information; a step of acquiring, based on the division structure information, one or more prediction quantization parameters from at least one neighboring unit corresponding to the unit to be decoded; a step of acquiring a differential quantization parameter for the unit to be decoded; a step of acquiring a quantization parameter from the differential quantization parameter and the one or more prediction quantization parameters; and a step of performing decoding corresponding to the unit to be decoded, by using the acquired quantization parameter.
    Type: Grant
    Filed: September 6, 2018
    Date of Patent: July 13, 2021
    Assignee: KAONMEDIA CO., LTD.
    Inventors: Jeong Yun Lim, Hoa Sub Lim, Dong Gyu Sim, Sea Nae Park
  • Publication number: 20210195180
    Abstract: A method and apparatus for processing a video signal according to the present invention derives a first prediction value of a chrominance block using a sample of a luminance block, calculates a compensation parameter based on a predetermined reference area, derives a second prediction value of a chrominance block, and reconstructs a chrominance block based on a second prediction value of a chrominance block.
    Type: Application
    Filed: March 9, 2021
    Publication date: June 24, 2021
    Inventors: Dong Gyu SIM, Sea Nae PARK
  • Publication number: 20210127121
    Abstract: The present invention relates to an image encoding and decoding technique, and more particularly, to an image encoder and decoder using unidirectional prediction. The image encoder includes a dividing unit to divide a macro block into a plurality of sub-blocks, a unidirectional application determining unit to determine whether an identical prediction mode is applied to each of the plurality of sub-blocks, and a prediction mode determining unit to determine a prediction mode with respect to each of the plurality of sub-blocks based on a determined result of the unidirectional application determining unit.
    Type: Application
    Filed: January 5, 2021
    Publication date: April 29, 2021
    Applicants: Electronics and Telecommunications Research Institute, Kwangwoon University Industry-Academic Collaboration Foundation, University-Industry Cooperation Group of Kyung Hee University
    Inventors: Hae Chul CHOI, Se Yoon JEONG, Sung-Chang LIM, Jin Soo CHOI, Jin Woo HONG, Dong Gyu SIM, Seoung-Jun OH, Chang-Beom AHN, Gwang Hoon PARK, Seung Ryong KOOK, Sea-Nae PARK, Kwang-Su JEONG
  • Patent number: 10972727
    Abstract: A method and apparatus for processing a video signal according to the present invention derives a first prediction value of a chrominance block using a sample of a luminance block, calculates a compensation parameter based on a predetermined reference area, derives a second prediction value of a chrominance block, and reconstructs a chrominance block based on a second prediction value of a chrominance block.
    Type: Grant
    Filed: October 1, 2019
    Date of Patent: April 6, 2021
    Assignee: KWANGWOON UNIVERSITY INDUSTRY-ACADEMIC COLLABORATION FOUNDATION
    Inventors: Dong Gyu Sim, Sea Nae Park
  • Patent number: 10917647
    Abstract: The present invention relates to an image encoding and decoding technique, and more particularly, to an image encoder and decoder using unidirectional prediction. The image encoder includes a dividing unit to divide a macro block into a plurality of sub-blocks, a unidirectional application determining unit to determine whether an identical prediction mode is applied to each of the plurality of sub-blocks, and a prediction mode determining unit to determine a prediction mode with respect to each of the plurality of sub-blocks based on a determined result of the unidirectional application determining unit.
    Type: Grant
    Filed: April 18, 2019
    Date of Patent: February 9, 2021
    Assignees: Electronics and Telecommunications Research Institute, Kwangwoon University Industry-Academic Collaboration Foundation, University-Industry Cooperation Group of Kyung Hee University
    Inventors: Hae Chul Choi, Se Yoon Jeong, Sung-Chang Lim, Jin Soo Choi, Jin Woo Hong, Dong Gyu Sim, Seoung-Jun Oh, Chang-Beom Ahn, Gwang Hoon Park, Seung Ryong Kook, Sea-Nae Park, Kwang-Su Jeong
  • Publication number: 20200359028
    Abstract: The encoding/decoding method and apparatus according to the present invention derives a residual coefficient of a residual block, calculates a quantization parameter for a residual block, performs dequantization on a residual coefficient using a quantization parameter, and performs inverse transform on a dequantized residual coefficient to reconstruct a residual sample of a residual block.
    Type: Application
    Filed: July 23, 2020
    Publication date: November 12, 2020
    Inventors: Dong Gyu SIM, Sea Nae PARK
  • Publication number: 20200296374
    Abstract: A method for image decoding includes: a step of parsing division depth information and division direction information of a block to be decoded; a step of acquiring division structure information, of a unit to be decoded in the block, corresponding to the parsed division depth information and division direction information; a step of acquiring, based on the division structure information, one or more prediction quantization parameters from at least one neighboring unit corresponding to the unit to be decoded; a step of acquiring a differential quantization parameter for the unit to be decoded; a step of acquiring a quantization parameter from the differential quantization parameter and the one or more prediction quantization parameters; and a step of performing decoding corresponding to the unit to be decoded, by using the acquired quantization parameter.
    Type: Application
    Filed: September 6, 2018
    Publication date: September 17, 2020
    Inventors: Jeong Yun LIM, Hoa Sub LIM, Dong Gyu SIM, Sea Nae PARK
  • Patent number: 10764584
    Abstract: The encoding/decoding method and apparatus according to the present invention derives a residual coefficient of a residual block, calculates a quantization parameter for a residual block, performs dequantization on a residual coefficient using a quantization parameter, and performs inverse transform on a dequantized residual coefficient to reconstruct a residual sample of a residual block.
    Type: Grant
    Filed: June 4, 2019
    Date of Patent: September 1, 2020
    Assignee: KWANGWOON UNIVERSITY INDUSTRY-ACADEMIC COLLABORATION FOUNDATION
    Inventors: Dong Gyu Sim, Sea Nae Park
  • Patent number: 10742996
    Abstract: The present invention relates to an image encoding and decoding technique, and more particularly, to an image encoder and decoder using unidirectional prediction. The image encoder includes a dividing unit to divide a macro block into a plurality of sub-blocks, a unidirectional application determining unit to determine whether an identical prediction mode is applied to each of the plurality of sub-blocks, and a prediction mode determining unit to determine a prediction mode with respect to each of the plurality of sub-blocks based on a determined result of the unidirectional application determining unit.
    Type: Grant
    Filed: April 18, 2019
    Date of Patent: August 11, 2020
    Assignees: Electronics and Telecommunications Research Institute, Kwangwoon University Industry-Academic Collaboration Foundation, University-Industry Cooperation Group of Kyung Hee University
    Inventors: Hae Chul Choi, Se Yoon Jeong, Sung-Chang Lim, Jin Soo Choi, Jin Woo Hong, Dong Gyu Sim, Seoung-Jun Oh, Chang-Beom Ahn, Gwang Hoon Park, Seung Ryong Kook, Sea-Nae Park, Kwang-Su Jeong
  • Publication number: 20200221101
    Abstract: The present invention relates to an image encoding and decoding technique, and more particularly, to an image encoder and decoder using unidirectional prediction. The image encoder includes a dividing unit to divide a macro block into a plurality of sub-blocks, a unidirectional application determining unit to determine whether an identical prediction mode is applied to each of the plurality of sub-blocks, and a prediction mode determining unit to determine a prediction mode with respect to each of the plurality of sub-blocks based on a determined result of the unidirectional application determining unit.
    Type: Application
    Filed: March 17, 2020
    Publication date: July 9, 2020
    Applicants: Electronics and Telecommunications Research Institute, Kwangwoon University Industry-Academic Collaboration Foundation, University-Industry Cooperation Group of Kyung Hee University
    Inventors: Hae Chul CHOI, Se Yoon JEONG, Sung-Chang LIM, Jin Soo CHOI, Jin Woo HONG, Dong Gyu SIM, Seoung-Jun OH, Chang-Beom AHN, Gwang Hoon PARK, Seung Ryong KOOK, Sea-Nae PARK, Kwang-Su JEONG
  • Publication number: 20200154104
    Abstract: The present invention relates to an apparatus and method for encoding and decoding an image by skip encoding. The image-encoding method by skip encoding, which performs intra-prediction, comprises: performing a filtering operation on the signal which is reconstructed prior to an encoding object signal in an encoding object image; using the filtered reconstructed signal to generate a prediction signal for the encoding object signal; setting the generated prediction signal as a reconstruction signal for the encoding object signal; and not encoding the residual signal which can be generated on the basis of the difference between the encoding object signal and the prediction signal, thereby performing skip encoding on the encoding object signal.
    Type: Application
    Filed: January 9, 2020
    Publication date: May 14, 2020
    Applicants: Electronics and Telecommunications Research Institute, Kwangwoon University Industry-Academic Collaboration Foundation, University-Industry Cooperation Group of Kyung Hee University
    Inventors: Sung Chang LIM, Ha Hyun LEE, Se Yoon JEONG, Hui Yong KIM, Suk Hee CHO, Jong Ho KIM, Jin Ho LEE, Jin Soo CHOI, Jin Woong KIM, Chie Teuk AHN, Dong Gyu SIM, Seoung Jun OH, Gwang Hoon PARK, Sea Nae PARK, Chan Woong JEON
  • Patent number: 10638138
    Abstract: The present invention relates to an image encoding and decoding technique, and more particularly, to an image encoder and decoder using unidirectional prediction. The image encoder includes a dividing unit to divide a macro block into a plurality of sub-blocks, a unidirectional application determining unit to determine whether an identical prediction mode is applied to each of the plurality of sub-blocks, and a prediction mode determining unit to determine a prediction mode with respect to each of the plurality of sub-blocks based on a determined result of the unidirectional application determining unit.
    Type: Grant
    Filed: April 18, 2019
    Date of Patent: April 28, 2020
    Assignees: Electronics and Telecommunications Research Institute, Kwangwoon University Industry-Academic Collaboration Foundation, University-Industry Cooperation Group of Kyung Hee University
    Inventors: Hae Chul Choi, Se Yoon Jeong, Sung-Chang Lim, Jin Soo Choi, Jin Woo Hong, Dong Gyu Sim, Seoung-Jun Oh, Chang-Beom Ahn, Gwang Hoon Park, Seung Ryong Kook, Sea-Nae Park, Kwang-Su Jeong
  • Patent number: 10574985
    Abstract: The present invention relates to an apparatus and method for encoding and decoding an image by skip encoding. The image-encoding method by skip encoding, which performs intra-prediction, comprises: performing a filtering operation on the signal which is reconstructed prior to an encoding object signal in an encoding object image; using the filtered reconstructed signal to generate a prediction signal for the encoding object signal; setting the generated prediction signal as a reconstruction signal for the encoding object signal; and not encoding the residual signal which can be generated on the basis of the difference between the encoding object signal and the prediction signal, thereby performing skip encoding on the encoding object signal.
    Type: Grant
    Filed: January 10, 2019
    Date of Patent: February 25, 2020
    Assignees: Electronics and Telecommunications Research Institute, Kwangwoon University Industry-Academic Collaboration Foundation, University-Industry Cooperation Group of Kyung Hee University
    Inventors: Sung Chang Lim, Ha Hyun Lee, Se Yoon Jeong, Hui Yong Kim, Suk Hee Cho, Jong Ho Kim, Jin Ho Lee, Jin Soo Choi, Jin Woong Kim, Chie Teuk Ahn, Dong Gyu Sim, Seoung Jun Oh, Gwang Hoon Park, Sea Nae Park, Chan Woong Jeon
  • Publication number: 20200036971
    Abstract: A method and apparatus for processing a video signal according to the present invention derives a first prediction value of a chrominance block using a sample of a luminance block, calculates a compensation parameter based on a predetermined reference area, derives a second prediction value of a chrominance block, and reconstructs a chrominance block based on a second prediction value of a chrominance block.
    Type: Application
    Filed: October 1, 2019
    Publication date: January 30, 2020
    Inventors: Dong Gyu SIM, Sea Nae PARK
  • Publication number: 20200037003
    Abstract: The present invention provides a method and apparatus for encoding/decoding an image and for adjusting a reconstructed pixel by scaling an offset of an in-loop filter having a scaled offset value. The method includes: obtaining information of a scale default value of a current block from a bitstream; obtaining offset parameter merge information of the current block from the bitstream; obtaining the offset parameter of the current block on the basis of the offset parameter merge information; determining whether a scale residual value of the current block is obtained from the bitstream on the basis of the offset parameter merge information; obtaining a scale value on the basis of the scale default value and the scale residual value; scaling an offset on the basis of the offset parameter and the scale value; and adjusting a pixel value of the current block on the basis of the scaled offset.
    Type: Application
    Filed: October 2, 2019
    Publication date: January 30, 2020
    Applicants: Electronics and Telecommunications Research Institute, Kwangwoon University Industry-Academic Collaboration Foundation
    Inventors: Jung Won KANG, Hyun Suk KO, Sung Chang LIM, Jin Ho LEE, Dong San JUN, Hui Yong KIM, Dong Gyu SIM, Seoung Jun OH, Jin Soo CHOI, Seoung Hwi KIM, Sea Nae PARK, Yong Jo AHN, Dong Kyu LEE