Patents by Inventor Jaehyun Lim

Jaehyun 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).

  • Patent number: 10390023
    Abstract: A method and apparatus for signaling and receiving a video signal for processing is disclosed. Methods for determining a most probable mode for predicting a current prediction block are provided as well as new methods for grouping intra prediction modes into prediction groups. Methods for predicting a prediction block of video data as well as signaling intra prediction modes are also provided.
    Type: Grant
    Filed: July 23, 2018
    Date of Patent: August 20, 2019
    Assignee: LG Electronics Inc.
    Inventors: Jaehyun Lim, Jungsun Kim, Seungwook Park, Jaewon Sung, Byeongmoon Jeon, Joonyoung Park, Yongjoon Jeon, Younghee Choi
  • Publication number: 20190246145
    Abstract: The present invention relates to a deblocking filtering method, a method for inducing bs (boundary strength) therefor, and a method and an apparatus for encoding/decoding using the same.
    Type: Application
    Filed: April 17, 2019
    Publication date: August 8, 2019
    Inventors: Seungwook PARK, Jaehyun LIM, Yongjoon JEON, Chulkeun KIM, Jungsun KIM, Naeri PARK, Hendry HENDRY, Byeongmoon JEON, Joonyoung PARK
  • Publication number: 20190246131
    Abstract: An inter-prediction method according to the present invention comprises the steps of: deriving a first movement vector of the current block; deriving prediction samples for the current block on the basis of the first movement vector; deriving a subunit located in the current block and adjacent to the target boundary of same; deriving a first reference unit on the basis of the subunit and first movement vector; deriving a second movement vector of a neighboring block adjacent to the target boundary; deriving a second reference unit on the basis of the subunit and second movement vector; and deriving the modified prediction samples on the basis of weighted sum of the first reference unit and second reference unit. According to the present invention, by increasing the effectiveness of inter-prediction at the block boundary, amount of data required for residual data can be reduced and the overall coding efficiency can be increased.
    Type: Application
    Filed: August 31, 2017
    Publication date: August 8, 2019
    Inventors: Naeri PARK, Hyeongmoon JANG, Jaehyun LIM
  • Patent number: 10368077
    Abstract: A method for decoding an image according to the present invention comprises the steps of: receiving and decoding MPM index information for indicating an MPM candidate which is to be used as an intra prediction mode of a current block; generating an MPM candidate list containing a plurality of MPM candidates for the current block; determining the MPM candidate indicated by the decoded MPM index information as the intra prediction mode of the current block, among the plurality of the MPM candidates which constitute the MPM candidate list; and generating a prediction block corresponding to the current block by performing intra prediction for the current block based on the determined intra prediction mode.
    Type: Grant
    Filed: January 8, 2018
    Date of Patent: July 30, 2019
    Assignee: LG Electronics Inc.
    Inventors: Joonyoung Park, Byeongmoon Jeon, Yongjoon Jeon, Seungwook Park, Jungsun Kim, Jaehyun Lim, Hendry Hendry, Naeri Park, Chulkeun Kim
  • Patent number: 10368090
    Abstract: The present invention relates to an intra-prediction method and to an encoder and decoder using same. The intra-prediction method according to one embodiment of the present invention comprises the steps of: deriving a prediction mode of a current block; and generating a prediction block with respect to the current block on the basis of the prediction mode of the current block. When the prediction mode of the current block is an intra-angular prediction mode, values of boundary samples from among left boundary samples and upper boundary samples of the prediction block, which are not positioned in a prediction direction of the intra-angular prediction mode, are derived on the basis of reference samples positioned in the prediction direction of the intra-angular prediction mode, and on the basis of adjacent reference samples.
    Type: Grant
    Filed: April 20, 2012
    Date of Patent: July 30, 2019
    Assignee: LG Electronics Inc.
    Inventors: Joonyoung Park, Seungwook Park, Jaehyun Lim, Jungsun Kim, Younghee Choi, Byeongmoon Jeon, Yongjoon Jeon
  • Patent number: 10356414
    Abstract: The present invention relates to video encoding and decoding method and apparatus, and a video encoding method according to the present invention comprises the steps of: entropy-encoding quantized transform information; and transmitting the entropy-encoded information as a bitstream, wherein the bitstream includes information indicating pieces of information to be parallel decoded in byte units.
    Type: Grant
    Filed: January 2, 2018
    Date of Patent: July 16, 2019
    Assignee: LG ELECTRONICS INC.
    Inventors: Hendry Hendry, Byeongmoon Jeon, Yongjoon Jeon, Seungwook Park, Jungsun Kim, Joonyoung Park, Jaehyun Lim, Naeri Park, Chulkeun Kim
  • Publication number: 20190215531
    Abstract: The present invention relates to a method for performing bi-prediction using a template-based weight, comprising the steps of: determining a template region for performing bi-prediction of a current block; calculating an uncorrelation factor on the basis of the template region, wherein the uncorrelation factor denotes a value indicating the uncorrelation between a template of the current block and a template of a reference block; determining a first weight parameter of the current block on the basis of the uncorrelation factor; and obtaining a first prediction value of the current block using the weight parameter.
    Type: Application
    Filed: September 22, 2017
    Publication date: July 11, 2019
    Inventors: Jaeho LEE, Junghak NAM, Jaehyun LIM
  • Patent number: 10349082
    Abstract: A method for intra prediction comprises determining a first MPM candidate corresponding to a left-side candidate block on the basis of a position of the left-side candidate block adjacent to a left side of a current block; determining a second MPM candidate corresponding to an upper-end candidate block on the basis of a position of the upper-end candidate block adjacent to an upper end of the current block; generating an MPM candidate list including a plurality of MPM candidates, on the basis of the first MPM candidate and the second MPM candidate; and determining one MPM candidate of the plurality of the MPM candidates that constitute the MPM candidate list as an intra prediction mode of the current block, and performing intra prediction for the current block on the basis of the determined intra prediction mode to generate a prediction block corresponding to the current block.
    Type: Grant
    Filed: April 26, 2018
    Date of Patent: July 9, 2019
    Assignee: LG Electronics Inc.
    Inventors: Jaehyun Lim, Seungwook Park, Yongjoon Jeon, Jungsun Kim, Hendry Hendry, Byeongmoon Jeon, Joonyoung Park, Chulkeun Kim, Naeri Park
  • Publication number: 20190208209
    Abstract: Disclosed are an image coding/decoding method and an apparatus therefor. Specifically, a method for decoding an image by a decoding apparatus may include: deriving an intra prediction mode of a current block; configuring reference samples with samples neighboring to an upper end and samples neighboring to a left side of the current block; generating a prediction block of the current block by using the reference sample; and filtering a sample adjacent to a top boundary and/or a left boundary of the current block among the prediction samples, in which when the current block is a non-square block, whether to filter the sample adjacent to the top boundary of the current block may be determined by considering only a width of the current block and whether to filter the sample adjacent to the left boundary of the current block may be determined by considering only a height of the current block.
    Type: Application
    Filed: September 5, 2017
    Publication date: July 4, 2019
    Inventors: Hyeongmoon JANG, Jaehyun LIM
  • Publication number: 20190200021
    Abstract: An inter-prediction method according to the present invention comprises the steps of: deriving a movement vector of the current block; deriving a reference block for the current block on the basis of the movement vector; deriving an IC parameter on the basis of first neighboring reference samples of the reference block and second neighboring reference samples of the current block, the IC parameter comprising a scaling factor a, and an offset b; and deriving prediction samples for the current block by carrying out IC for the reference samples of the reference block on the basis of the scaling factor and offset. According to the present invention, inter-prediction efficiency can be effectively increased while reducing the amount of additional data.
    Type: Application
    Filed: August 31, 2017
    Publication date: June 27, 2019
    Inventors: Naeri PARK, Jaehyun LIM
  • Publication number: 20190200018
    Abstract: The present invention relates to video encoding and decoding method and apparatus, and a video encoding method according to the present invention comprises the steps of: entropy-encoding quantized transform information; and transmitting the entropy-encoded information as a bitstream, wherein the bitstream includes information indicating pieces of information to be parallel decoded in byte units.
    Type: Application
    Filed: March 4, 2019
    Publication date: June 27, 2019
    Inventors: Hendry HENDRY, Byeongmoon Jeon, Yongjoon Jeon, Seungwook Park, Jungsun Kim, Joonyoung Park, Jaehyun Lim, Naeri Park, Chulkeun Kim
  • Patent number: 10334272
    Abstract: A method for intra prediction comprises determining a first MPM candidate corresponding to a left-side candidate block on the basis of a position of the left-side candidate block adjacent to a left side of a current block; determining a second MPM candidate corresponding to an upper-end candidate block on the basis of a position of the upper-end candidate block adjacent to an upper end of the current block; generating an MPM candidate list including a plurality of MPM candidates, on the basis of the first MPM candidate and the second MPM candidate; and determining one MPM candidate of the plurality of the MPM candidates that constitute the MPM candidate list as an intra prediction mode of the current block, and performing intra prediction for the current block on the basis of the determined intra prediction mode to generate a prediction block corresponding to the current block.
    Type: Grant
    Filed: December 18, 2017
    Date of Patent: June 25, 2019
    Assignee: LG Electronics Inc.
    Inventors: Jaehyun Lim, Seungwook Park, Yongjoon Jeon, Jungsun Kim, Hendry Hendry, Byeongmoon Jeon, Joonyoung Park, Chulkeun Kim, Naeri Park
  • Patent number: 10326988
    Abstract: A deblocking filtering method, a boundary strength (bS) deriving method, and encoding/decoding method and apparatus using the methods are provided. The bS deriving method includes the steps of: deriving a boundary of a deblocking filtering unit block which is a unit block on which deblocking filtering is performed; and setting a bS for each bS setting unit block in the deblocking filtering unit block. Here, the step of setting the bS includes setting a bS value of a target boundary corresponding to the boundary of the deblocking filtering unit block as the bS setting unit block.
    Type: Grant
    Filed: November 5, 2012
    Date of Patent: June 18, 2019
    Assignee: LG Electronics Inc.
    Inventors: Seungwook Park, Jaehyun Lim, Yongjoon Jeon, Chulkeun Kim, Jungsun Kim, Naeri Park, Hendry Hendry, Byeongmoon Jeon, Joonyoung Park
  • Patent number: 10321156
    Abstract: A method for signalling an intra chroma prediction mode and a method for implementing the signalled intra chroma prediction mode, the intra chroma prediction mode taking an intropolation of previously predicted luma samples from neighboring blocks of video data to attain an intra chroma prediction of a current chroma prediction unit.
    Type: Grant
    Filed: March 8, 2018
    Date of Patent: June 11, 2019
    Assignee: LG Electronics Inc.
    Inventors: Jungsun Kim, Seungwook Park, Jaehyun Lim, Joonyoung Park, Younghee Choi, Jaewon Sung, Byeongmoon Jeon, Yongjoon Jeon
  • Patent number: 10321154
    Abstract: The present invention relates to a method for signaling image information and to a decoding method using same. The method for signaling image information according to the present invention comprises: a step of performing inter-prediction for a current picture; and a step of signaling information including the result of said inter-prediction and reference picture information indicating reference pictures usable in said inter prediction, wherein said reference picture information contains pieces of picture order count (POC) information of said usable reference pictures. The POC information of said usable reference pictures in said reference picture information is configured such that POCs for the pictures existing before said current picture in tents of a POC sequence are located at the front, and POCs for the pictures existing after said current picture in terms of a POC sequence are located following the POCs located at the front.
    Type: Grant
    Filed: February 1, 2017
    Date of Patent: June 11, 2019
    Assignee: LG Electronics Inc.
    Inventors: Hendry Hendry, Seungwook Park, Jaehyun Lim, Yongjoon Jeon, Chulkeun Kim, Jungsun Kim, Naeri Park, Byeongmoon Jeon, Joonyoung Park
  • Publication number: 20190174128
    Abstract: Disclosed are an intra-prediction mode-based image processing method and a device therefor. Particularly, a method for processing an image on the basis of an intra-prediction mode may comprise the steps of: configuring a reference sample to be used for prediction of a current block on the basis of width information and height information of the current block when the current block is a non-square block; deriving an intra-prediction mode of the current block; and generating a prediction sample of the current block by using the reference sample on the basis of the intra-prediction mode of the current block.
    Type: Application
    Filed: February 7, 2017
    Publication date: June 6, 2019
    Inventors: Hyeongmoon JANG, Junghak NAM, Jaehyun LIM, Jin HEO
  • Publication number: 20190174142
    Abstract: Disclosed are an intra-prediction method using filtering and an apparatus using the method. An image-decoding method comprises: a step of filtering an n upper reference pixel of a block to be predicted and neighboring pixels of the n upper reference pixel so as to obtain the filtered n upper reference pixel; and a step of filtering an n left reference pixel of a block to be predicted and neighboring pixels of the n left reference pixel so as to obtain the filtered n left reference pixel. According to the present invention, intra-prediction may be efficiently performed to improve image-encoding/decoding efficiency.
    Type: Application
    Filed: January 17, 2019
    Publication date: June 6, 2019
    Inventors: Yongjoon JEON, Seungwook PARK, Jaehyun LIM, Jungsun KIM, Joonyoung PARK, Younghee CHOI, Jaewon SUNG, Byeongmoon JEON
  • Publication number: 20190158869
    Abstract: The present invention relates to the encoding and decoding of image information. According to the present invention, the decoding method comprises the steps of: entropy-decoding received information; performing inter prediction on a current block based on the entropy-decoded information; and restoring images by using the prediction results, wherein, in the inter prediction step, a skip mode or merge mode is applied to the current block and movement information of the current block may be determined based on the movement information of a neighboring block of the current block.
    Type: Application
    Filed: January 24, 2019
    Publication date: May 23, 2019
    Inventors: Seungwook PARK, Jaehyun LIM, Yongjoon JEON, Hendry HENDRY, Younghee CHOI, Jaewon SUNG, Jungsun KIM, Byeongmoon JEON, Joonyoung PARK
  • Patent number: 10298962
    Abstract: The present invention relates to a deblocking filtering method, a method for inducing bs (boundary strength) therefor, and a method and an apparatus for encoding/decoding using the same. The method for inducing the bS of the present invention comprises the steps of: inducing a boundary of a deblocking filtering unit block as a unit block for applying the deblocking filtering; and setting the bS according to each bS setting unit block within the deblocking filtering unit block, wherein the bS setting step can set a bS value for a target boundary corresponding to a boundary of the deblocking filtering unit block as the bs setting unit block.
    Type: Grant
    Filed: April 25, 2018
    Date of Patent: May 21, 2019
    Assignee: LG ELECTRONICS INC.
    Inventors: Seungwook Park, Jaehyun Lim, Yongjoon Jeon, Chulkeun Kim, Jungsun Kim, Naeri Park, Hendry Hendry, Byeongmoon Jeon, Joonyoung Park
  • Publication number: 20190149826
    Abstract: The present invention relates to an entropy decoding method which includes: generating context related to a bin that forms a codeword of a syntax element; and performing arithmetic decoding of the bin based on the context.
    Type: Application
    Filed: January 10, 2019
    Publication date: May 16, 2019
    Inventors: Jaehyun LIM, Byeongmoon JEON, Yongjoon JEON, Seungwook PARK, Jungsun KIM, Joonyoung PARK, Hendry HENDRY, Naeri PARK, Chulkeun KIM