Patents by Inventor Sung-won Lim

Sung-won Lim 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 METHOD/DEVICE, IMAGE DECODING METHOD/DEVICE AND RECORDING MEDIUM HAVING BITSTREAM STORED THEREIN
    Publication number: 20220345703
    Abstract: The present invention provides an image encoding method and an image decoding method. The image decoding method, according to the present invention, comprises the steps of: determining a transformation performing region; segmenting the determined transformation performing region into at least one sub-transform block by using at least one of quadtree segmentation and binary tree segmentation; and performing inverse transformation on the at least one sub-transform block.
    Type: Application
    Filed: July 8, 2022
    Publication date: October 27, 2022
    Applicant: Industry Academy Cooperation Foundation of Sejong University
    Inventors: Joo Hee MOON, Dong Jae WON, Sung Won LIM
  • IMAGE ENCODING METHOD/DEVICE, IMAGE DECODING METHOD/DEVICE AND RECORDING MEDIUM HAVING BITSTREAM STORED THEREON
    Publication number: 20220337828
    Abstract: The present invention provides an image encoding method and an image decoding method. The image decoding method, according to the present invention, comprises the steps of: decoding information associated with a clipping range of a current block; and performing sample adaptive offset (SAO) filtering on the basis of the information associated with the clipping range, wherein the information associated with the clipping range may include information on the maximum and minimum values of a pixel value included in the current block.
    Type: Application
    Filed: July 4, 2022
    Publication date: October 20, 2022
    Applicant: INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY
    Inventors: Joo Hee MOON, Dong Jae WON, Sung Won LIM
  • Method and apparatus for encoding/decoding a video signal, and a recording medium storing a bitstream
    Patent number: 11470345
    Abstract: A video decoding method according to the present disclosure may include determining whether an affine motion model is applied to a current block or not, performing motion compensation for the current block according to whether the affine motion model is applied or not, determining a value of a first variable and a second variable representing whether a prediction block obtained by the motion compensation will be refined and determining a padding size of the prediction block.
    Type: Grant
    Filed: June 9, 2021
    Date of Patent: October 11, 2022
    Assignee: KT CORPORATION
    Inventor: Sung Won Lim
  • VIDEO SIGNAL PROCESSING METHOD AND DEVICE
    Publication number: 20220295056
    Abstract: An image decoding method according to the disclosure comprises the steps of: determining whether a cross-component linear model (CCLM) mode is applied to a chroma block; acquiring a filtered neighboring luma sample with respect to a neighboring chroma sample adjacent to the chroma block, when it is determined that the CCLM mode is applied to the chroma block; deriving a CCLM parameter by using the neighboring chroma sample and the filtered neighboring luma sample; and generating a prediction block for the chroma block by using the CCLM parameter.
    Type: Application
    Filed: August 28, 2020
    Publication date: September 15, 2022
    Applicant: KT CORPORATION
    Inventor: Sung Won LIM
  • VIDEO SIGNAL PROCESSING METHOD AND DEVICE
    Publication number: 20220295045
    Abstract: A video encoding/decoding method and device according to the present invention may comprise: configuring a palette table for a palette mode of a current block; determining per-pixel palette indices of the current block; and predicting pixels of the current block on the basis of the palette table and the palette indices.
    Type: Application
    Filed: August 28, 2020
    Publication date: September 15, 2022
    Applicant: KT CORPORATION
    Inventor: Sung Won LIM
  • METHOD AND DEVICE FOR PROCESSING VIDEO SIGNAL
    Publication number: 20220295046
    Abstract: A method for decoding a video according to the present disclosure may comprise: a step for configuring a current palette table on the basis of a previous palette table; a step for determining a palette index in units of pixels in the current block; and a step for restoring the pixels in the current block on the basis of the palette table and the palette index.
    Type: Application
    Filed: August 28, 2020
    Publication date: September 15, 2022
    Applicant: KT CORPORATION
    Inventor: Sung Won LIM
  • METHOD AND APPARATUS FOR ENCODING/DECODING VIDEO SIGNAL
    Publication number: 20220272373
    Abstract: A method of decoding a video signal according to the present invention may include: determining whether or not change in brightness is present between a current video including a current block and a reference video of the current video; when it is determined that change in brightness is present between the current video and the reference video, determining weight prediction parameter candidates of the current block; determining a weight prediction parameter of the current block on the basis of index information specifying any of the weight prediction parameter candidates; and performing prediction for the current block on the basis of the weight prediction parameter.
    Type: Application
    Filed: March 2, 2022
    Publication date: August 25, 2022
    Applicant: Intellectual Discovery Co., Ltd.
    Inventors: Joo Hee MOON, Sung Won LIM, Dong Jae WON
  • METHOD AND APPARATUS FOR ENCODING/DECODING IMAGE SIGNAL
    Publication number: 20220272361
    Abstract: A method for decoding an image signal according to the present invention may comprise the steps of: determining whether there is a brightness change between a current image including a current block and a reference image of the current image; if it is determined that there is a brightness change between the current image and the reference image, determining weight prediction parameter candidates for the current block; determining a weight prediction parameter for the current block on the basis of index information which specifies any one of the weight prediction parameter candidates; and performing a prediction on the current block on the basis of the weight prediction parameter.
    Type: Application
    Filed: May 13, 2022
    Publication date: August 25, 2022
    Applicant: Industry Academy Cooperation Foundation of Sejong University
    Inventors: Joo Hee MOON, Sung Won LIM, Dong Jae WON
  • Method and apparatus for encoding/decoding image
    Patent number: 11425426
    Abstract: The present invention relates to an image encoding/decoding method and device, and the image encoding method or device according to an embodiment of the present invention may encode a position of a reference coefficient within a current transform block to be encoded, and encoding skip region information of a skip region selected on the basis of the position of the reference coefficient. The skip region information may represent whether or not coefficients within the skip region have an identical coefficient value.
    Type: Grant
    Filed: January 31, 2018
    Date of Patent: August 23, 2022
    Assignee: INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY
    Inventors: Joo Hee Moon, Jae Min Ha, Dong Jae Won, Sung Won Lim
  • Image encoding method/device, image decoding method/device and recording medium having bitstream stored thereon
    Patent number: 11412218
    Abstract: The present invention provides an image encoding method and an image decoding method. The image decoding method, according to the present invention, comprises the steps of: decoding information associated with a clipping range of a current block; and performing sample adaptive offset (SAO) filtering on the basis of the information associated with the clipping range, wherein the information associated with the clipping range may include information on the maximum and minimum values of a pixel value included in the current block.
    Type: Grant
    Filed: January 16, 2018
    Date of Patent: August 9, 2022
    Assignee: INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY
    Inventors: Joo Hee Moon, Dong Jae Won, Sung Won Lim
  • Method and apparatus for encoding/decoding image signal
    Patent number: 11363280
    Abstract: A method for decoding an image signal according to the present invention may comprise the steps of: obtaining a first prediction sample of a current block by performing inter prediction on the current block; determining one or more weight prediction parameter candidates for the current block; determining a weight prediction parameter of the current block from the one or more weight prediction parameter candidates; and obtaining a second prediction sample of the current block by applying the weight prediction parameter to the first prediction sample. Herein, a number of the one or more weight prediction parameter candidates is variably determined based on a size of the current block.
    Type: Grant
    Filed: January 27, 2021
    Date of Patent: June 14, 2022
    Assignee: INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY
    Inventors: Joo Hee Moon, Sung Won Lim, Dong Jae Won
  • METHOD AND APPARATUS FOR ENCODING/DECODING AN IMAGE SIGNAL
    Publication number: 20220159238
    Abstract: Disclosed are an image encoding/decoding method and apparatus. The image decoding method includes decoding coding mode information of a current coding block, dividing the current coding block into at least one prediction block, and generating prediction samples of the at least one prediction block on the basis of the decoded coding mode, in which the coding mode information is information indicating any one mode among intra mode, inter mode, and hybrid mode.
    Type: Application
    Filed: January 21, 2022
    Publication date: May 19, 2022
    Applicant: INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY
    Inventors: Joo Hee MOON, Dong Jae WON, Sung Won LIM
  • Method and apparatus for encoding/decoding video signal
    Patent number: 11297343
    Abstract: A method of decoding a video signal according to the present invention may include: determining whether or not change in brightness is present between a current video including a current block and a reference video of the current video; when it is determined that change in brightness is present between the current video and the reference video, determining weight prediction parameter candidates of the current block; determining a weight prediction parameter of the current block on the basis of index information specifying any of the weight prediction parameter candidates; and performing prediction for the current block on the basis of the weight prediction parameter.
    Type: Grant
    Filed: September 30, 2020
    Date of Patent: April 5, 2022
    Assignee: Intellectual Discovery Co.. Ltd.
    Inventors: Joo Hee Moon, Sung Won Lim, Dong Jae Won
  • Semiconductor device having buried gate structure, method for manufacturing the same, and memory cell having the same
    Patent number: 11276761
    Abstract: A semiconductor device includes at least one trench extending into a semiconductor substrate and lined with a gate dielectric layer; a dipole inducing layer covering a lowermost portion of the lined trench; a gate electrode covering the dipole inducing layer and filled in the lined trench; and doping regions, in the semiconductor substrate, separated from each other by the lined trench and separated from the dipole inducing layer.
    Type: Grant
    Filed: January 6, 2020
    Date of Patent: March 15, 2022
    Assignee: SK hynix Inc.
    Inventors: Dong-Soo Kim, Sung-Won Lim, Eun-Jeong Kim, Hyun-Jin Chang, Keun Heo, Jee-Hyun Kim
  • IMAGE ENCODING/DECODING METHOD AND DEVICE
    Publication number: 20220030249
    Abstract: The present invention relates to an image encoding/decoding method and device. In an image decoding method and device according to an embodiment of the present invention, a reconstructed pixel region within an image to which a current block to be decoded belongs is selected; a motion vector of the reconstructed pixel region is derived on the basis of the reconstructed pixel region and a reference image of the current block; and the derived motion vector is selected as a motion vector of the current block.
    Type: Application
    Filed: October 4, 2021
    Publication date: January 27, 2022
    Applicant: INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY
    Inventors: Joo Hee MOON, Sung Won LIM, Dong Jae WON
  • METHOD AND APPARATUS FOR ENCODING/DECODING A VIDEO SIGNAL, AND A RECORDING MEDIUM STORING A BITSTREAM
    Publication number: 20210392370
    Abstract: A video decoding method according to the present disclosure may include determining whether an affine motion model is applied to a current block or not, performing motion compensation for the current block according to whether the affine motion model is applied or not, determining a value of a first variable and a second variable representing whether a prediction block obtained by the motion compensation will be refined and determining a padding size of the prediction block.
    Type: Application
    Filed: June 9, 2021
    Publication date: December 16, 2021
    Applicant: KT CORPORATION
    Inventor: Sung Won LIM
  • METHOD AND APPARATUS FOR ENCODING/DECODING A VIDEO SIGNAL BASED ON WEIGHTED PREDICTION, AND A RECORDING MEDIUM STORING A BITSTREAM
    Publication number: 20210392337
    Abstract: An image decoding method and apparatus according to the present disclosure may determine an inter prediction mode of a current block, derive motion information of a current block according to the inter prediction mode, obtain a first prediction block of the current block based on the motion information, and obtain a second prediction block of the current block by applying at least one of a weight, an offset, or a first variable for explicit weighted prediction to the first prediction block.
    Type: Application
    Filed: June 9, 2021
    Publication date: December 16, 2021
    Applicant: KT CORPORATION
    Inventor: Sung Won LIM
  • METHOD AND APPARATUS FOR ENCODING/DECODING A VIDEO SIGNAL, AND A RECORDING MEDIUM STORING A BITSTREAM
    Publication number: 20210392339
    Abstract: An image decoding method according to the present disclosure includes determining a reference pixel line of a current block, determining an intra prediction mode of the current block and deriving a prediction sample of the current block based on the intra prediction mode and a reference pixel included in the reference pixel line. In this case, the prediction sample is determined based on a prediction angle of the intra prediction mode and an inverse-angle variable derived based on the prediction angle. And when the prediction angle has a predefined value, the inverse-angle variable is set as a default value.
    Type: Application
    Filed: June 9, 2021
    Publication date: December 16, 2021
    Applicant: KT CORPORATION
    Inventor: Sung Won LIM
  • METHOD AND DEVICE FOR ENCODING AND DECODING IMAGE SIGNAL
    Publication number: 20210352296
    Abstract: A method for encoding image signal, according to the present invention, can: encode a partial block coefficient flag indicating whether a coefficient of a current partial block is a non-zero coefficient; encode a first flag indicating whether an absolute value of the coefficient is greater than 1, encode a second flag indicating whether the absolute value of the coefficient is greater than 2; encode the residual coefficients, which have not been encoded, on the basis of the first flag or the second flag in the current partial block; and encode a code for the coefficient of the current partial block.
    Type: Application
    Filed: July 21, 2021
    Publication date: November 11, 2021
    Applicant: Industry Academy Cooperation Foundation of Sejong University
    Inventors: Joo Hee MOON, Dong Jae WON, Sung Won LIM
  • VIDEO SIGNAL ENCODING/DECODING METHOD AND APPARATUS
    Publication number: 20210329238
    Abstract: An image signal decoding method according to the present invention comprises the steps of: decoding information indicating whether a current block is encoded using a multi-mode intra prediction; when it is determined that the current block is encoded in the multi-mode intra prediction, dividing the current block into a plurality of partial blocks; and obtaining an intra prediction mode of each of the plurality of partial blocks.
    Type: Application
    Filed: June 30, 2021
    Publication date: October 21, 2021
    Applicant: Industry Academy Cooperation Foundation of Sejong University
    Inventors: Joo Hee MOON, Sung Won LIM, Dong Jae WON