Patents by Inventor Sehoon Yea

Sehoon Yea 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).

  • METHOD AND DEVICE FOR CODING RESIDUAL SIGNAL IN VIDEO CODING SYSTEM
    Publication number: 20180288409
    Abstract: An image decoding method according to the present invention comprises the steps of: deriving quantized transform coefficients by unit of sub-blocks in a transform unit on the basis of residual information included in a bitstream; deriving transform coefficients on the basis of the quantized transform coefficients; generating a residual sample on the basis of the transform coefficients; generating a prediction sample on the basis of an inter prediction or an intra prediction; and restoring an image on the basis of the residual sample and the prediction sample. According to the present invention, a quantity of data required for a residual signal can be reduced, and an overall coding efficiency can be improved.
    Type: Application
    Filed: September 30, 2016
    Publication date: October 4, 2018
    Inventors: Jin Heo, Eunyong Son, Jaeho Lee, Seungwook PARK, Sehoon Yea, Junghak Nam
  • METHOD FOR ENCODING/DECODING VIDEO SIGNAL BY USING SINGLE OPTIMIZED GRAPH
    Publication number: 20180288411
    Abstract: The present invention provides a method for encoding a video signal by using a single optimized graph, comprising the steps of: obtaining a residual block; generating graphs from the residual block; generating an optimized graph and an optimized transform by combining the graphs, wherein the graphs are combined on the basis of an optimization step; and performing a transform for the residual block on the basis of the optimized graph and the optimized transform.
    Type: Application
    Filed: September 29, 2016
    Publication date: October 4, 2018
    Inventors: Hilmi E. EGILMEZ, Sehoon YEA, Antonio ORTEGA, Onur G. GULERYUZ, Jana EHMANN
  • AMVR-BASED IMAGE CODING METHOD AND APPARATUS IN IMAGE CODING SYSTEM
    Publication number: 20180270485
    Abstract: An image encoding method according to the present invention, which is performed by an encoding apparatus, comprises the steps of: generating an adaptive motion vector range (AMVR) enable flag; deriving a motion vector difference (MVD) with respect to a current block; deriving a representative MVD value of an MVD range including a value of the MVD from among a plurality of MVD ranges; generating a coded MVD corresponding to the representative MVD value; and outputting the AMVR enable flag and the coded MVD through a bit stream. According to the present invention, the amount of bits allocated to an MVD can be reduced and the overall coding efficiency can thus be increased.
    Type: Application
    Filed: March 3, 2016
    Publication date: September 20, 2018
    Inventors: Hyeongmoon JANG, Jaehyun LIM, Seungwook PARK, Sehoon YEA
  • Video signal processing method and device
    Patent number: 10080030
    Abstract: The present invention relates to a video signal processing method and device capable of: obtaining a reference view block by using a predetermined motion vector; obtaining the depth value of a reference block which corresponds to the reference view block; obtaining an inter-view motion vector for a current block by using at least one depth value of the reference depth block; and decoding the current block by using the inter-view motion vector.
    Type: Grant
    Filed: April 11, 2014
    Date of Patent: September 18, 2018
    Assignee: LG ELECTRONICS INC.
    Inventors: Jin Heo, Taesup Kim, Jiwook Jung, Sehoon Yea
  • Method predicting view synthesis in multi-view video coding and method for constituting merge candidate list by using same
    Patent number: 10070147
    Abstract: The present invention relates to a method for constituting a merge candidate list by using a view synthesis prediction (VSP) and the like in multi-view video coding. The method for constituting the merge candidate list according to the present invention comprises the steps of: determining a prediction mode for a current block; inducing, as a merge candidate, motion information from neighboring blocks of the current block when the prediction mode for the current block is a merge mode or a skip mode; and constituting the merge candidate list by using the motion information of the neighboring blocks and the deep parity information induced from the neighboring blocks of the current block.
    Type: Grant
    Filed: October 20, 2014
    Date of Patent: September 4, 2018
    Assignee: LG ELECTRONICS INC.
    Inventors: Taesup Kim, Sehoon Yea, Jin Heo, Jungdong Seo, Sunmi Yoo, Junghak Nam
  • Video decoding apparatus and method for decoding multi-view video
    Patent number: 10063887
    Abstract: A method inducing video information required for decoding a current block by entropy-decoding a bitstream; inducing a first disparity vector based on a neighboring block of the current block in the same view by using the video information, inducing a second disparity vector by using the first disparity vector and a reference view depth, and inducing a third disparity vector using the difference between the first disparity vector and the second disparity vector; inducing a prediction sample of the current block by using one of the first disparity vector, the second disparity vector, or the third disparity vector; and applying filtering to a current picture which has been restored using the prediction sample.
    Type: Grant
    Filed: October 20, 2014
    Date of Patent: August 28, 2018
    Assignee: LG ELECTRONICS INC.
    Inventors: Junghak Nam, Jungdong Seo, Sunmi Yoo, Sehoon Yea, Jin Heo, Taesup Kim, Moonmo Koo
  • Method for encoding, decoding video signal and device therefor
    Patent number: 10051268
    Abstract: There is provided a method for encoding a video signal based on pixel-correlations on a transform domain, the method comprising: obtaining a first transform coefficient by transforming a pixel value of a target block in a current frame; reconstructing a second transform coefficient for a corresponding block in a previous frame; and obtaining a prediction value of the first transform coefficient based on the reconstructed second transform coefficient and a correlation coefficient.
    Type: Grant
    Filed: October 29, 2015
    Date of Patent: August 14, 2018
    Assignee: LG Electronics Inc.
    Inventor: Sehoon Yea
  • Method and apparatus for decoding multi-view video
    Patent number: 10045048
    Abstract: The present invention relates to a video decoding apparatus and a method for decoding a multi-view video, and the video decoding apparatus according to the present invention comprises: an entropy-decoding unit for entropy-decoding a bitstream and outputting video information required for decoding a current block in a depth picture; a memory for saving pictures referenced when decoding the current block; and a prediction unit for inducing a prediction sample of the current block, by using motion information of a texture picture within the same view as motion information of the current block.
    Type: Grant
    Filed: October 20, 2014
    Date of Patent: August 7, 2018
    Assignee: LG ELECTRONICS INC.
    Inventors: Junghak Nam, Jin Heo, Taesup Kim, Jungdong Seo, Sehoon Yea
  • METHOD AND DEVICE FOR PROCESSING VIDEO SIGNAL USING GRAPH-BASED TRANSFORM
    Publication number: 20180220158
    Abstract: A method for decoding a video signal using a graph-based transform, the method being characterized by including the steps of: parsing a transform index from the video signal; obtaining context information for a target unit, where the context information includes a prediction mode for a current block or peripheral blocks; obtaining an inverse-transform kernel on the basis of at least one of the transform index and the context information; and performing an inverse transform for the current block using the inverse transform kernel.
    Type: Application
    Filed: July 21, 2016
    Publication date: August 2, 2018
    Inventors: Moonmo KOO, Sehoon YEA, Kyuwoon KIM, Bumshik LEE
  • METHOD AND DEVICE FOR PROCESSING VIDEO SIGNAL BY USING SEPARABLE GRAPH-BASED TRANSFORM
    Publication number: 20180213233
    Abstract: The present invention provides a method for decoding a video signal by using a graph-based transform, comprising the steps of: parsing a transform index from the video signal; generating a line graph on the basis of edge information on a target unit; aligning transform vectors for each of segments of the line graph on the basis of a transform type corresponding to the transform index; acquiring a transform kernel by realigning the transform vectors for each of segments of the line graph according to a predetermined condition; and performing an inverse transform for the target unit on the basis of the transform kernel.
    Type: Application
    Filed: July 15, 2016
    Publication date: July 26, 2018
    Inventors: Moonmo KOO, Bumshik LEE, Sehoon YEA, Kyuwoon KIM
  • Method and device for processing video signal
    Patent number: 10021417
    Abstract: The present invention relates to inter-view residual prediction and is characterized by obtaining residual data of a first reference block by using a motion vector of a neighboring block, obtaining residual data of a second reference block by using a reference view motion vector or a disparity vector, obtaining a residual data prediction value by using the residual data of the first reference block and the residual data of the second reference block, and coding a current texture block by using the residual data prediction value. The present invention can perform inter-view residual prediction by using a prediction value obtained using coded data of another view point belonging to the same time band to increase the accuracy of video data prediction by using a correlation between view points and reduce the amount of residual data to be transmitted, thereby improving the coding efficiency.
    Type: Grant
    Filed: June 18, 2013
    Date of Patent: July 10, 2018
    Assignee: LG ELECTRONICS INC.
    Inventors: Eunyong Son, Jiwook Jung, Sehoon Yea, Moonmo Koo, Jin Heo, Taesup Kim, Jaewon Sung
  • METHOD FOR ENCODING/DECODING IMAGE AND DEVICE FOR SAME
    Publication number: 20180192068
    Abstract: Disclosed in the present invention are a method for encoding/decoding an image and a device for same. Particularly, a method for decoding an image may comprise the steps of: parsing a filter index from a bit stream outputted from an encoder; determining a filter set using the filter index, from among a plurality of filter sets belonging to a predetermined filter bank; deriving a filter coefficient based on a coefficient for filtering, defined by the filter set, which has been determined by the filter index; and applying filtering to a reconstructed image obtained using a prediction signal and a differential signal, by using the derived filter coefficient.
    Type: Application
    Filed: June 16, 2016
    Publication date: July 5, 2018
    Inventors: Junghak NAM, Chulkeun KIM, Seungwook PARK, Sehoon YEA
  • METHOD AND DEVICE FOR PROCESSING VIDEO SIGNAL BY USING GRAPH-BASED TRANSFORM
    Publication number: 20180167618
    Abstract: The present invention provides a method for decoding a video signal using a graph-based transform including receiving, from the video signal, a transform index for a target block; deriving a graph-based transform kernel corresponding to the transform index, and the graph-based transform kernel is determined based on boundary information, which represents a property of a signal for a block boundary; and decoding the target block based on the graph-based transform kernel.
    Type: Application
    Filed: June 7, 2016
    Publication date: June 14, 2018
    Inventors: Bumshik LEE, Sehoon YEA, Moonmo KOO
  • Method and apparatus for processing video signals
    Patent number: 9998762
    Abstract: The present invention relates to a method and an apparatus for processing video signals, and more specifically, to a method and an apparatus for processing video signals which applies deformation compensation to decode a current texture block. The present invention can increase the accuracy of an inter-prediction by obtaining the position of a block within a reference picture referenced by the current texture block, by means of using deformation compensation parameter information, and obtaining a pixel value of the block within the reference picture that is obtained from a prediction value of the current texture block.
    Type: Grant
    Filed: January 9, 2014
    Date of Patent: June 12, 2018
    Assignee: LG ELECTRONICS INC.
    Inventors: Jin Heo, Jiwook Jung, Sehoon Yea, Moonmo Koo, Taesup Kim, Jaewon Sung, Eunyong Son
  • METHOD AND DEVICE FOR PROCESSING A VIDEO SIGNAL BY USING AN ADAPTIVE SEPARABLE GRAPH-BASED TRANSFORM
    Publication number: 20180146195
    Abstract: The present invention provides a method for decoding a video signal using an adaptive separable graph-based transform, comprising the steps of: receiving a transform index for a target block from the video signal, wherein the transform index indicates a graph-based transform to be applied to the target block; deriving a graph-based transform kernel corresponding to the transform index; and decoding the target block based on the graph-based transform kernel.
    Type: Application
    Filed: May 26, 2016
    Publication date: May 24, 2018
    Inventors: Moonmo KOO, Sehoon YEA, Bumshik LEE, Amir SAID, Hilmi Enes EGILMEZ, Antonio ORTEGA
  • Method and device for determining a unit of a transform unit used in video signal processing
    Patent number: 9961368
    Abstract: The present invention variably adjusts the maximum splitting information of a conversion unit according to the type of prediction unit and the splitting information on a coding unit and selects the optimal splitting information on the conversion unit. The present invention determines the maximum splitting information on the conversion unit of a depth block by using the maximum splitting information on the conversion unit for texture data. The present invention may lower complexity without a loss in efficiency by variably adjusting the maximum splitting information on the conversion unit in consideration of the characteristics of the depth data. The present invention may lower complexity by determining the maximum splitting information on the conversion unit of the depth data by using similar characteristics between the texture data and the depth data.
    Type: Grant
    Filed: April 24, 2013
    Date of Patent: May 1, 2018
    Assignee: LG ELECTRONICS INC.
    Inventors: Jin Heo, Jiwook Jung, Sehoon Yea, Moonmo Koo, Taesup Kim, Jaewon Sung, Eunyong Son
  • METHOD FOR ENCODING AND DECODING VIDEO SIGNAL, AND APPARATUS THEREFOR
    Publication number: 20180115787
    Abstract: The present invention provides a method for encoding a video signal, comprising: generating prediction pixels for the first row or column of a current block on the basis of boundary pixels neighboring to the current block; predicting remaining pixels within the current block respectively in the vertical direction or horizontal direction using the prediction pixels for the first row or column of the current block; generating a difference signal on the basis of the prediction pixels for the current block; and generating a transform-coded residual signal by applying a horizontal transform matrix and a vertical transform matrix to the difference signal.
    Type: Application
    Filed: April 12, 2016
    Publication date: April 26, 2018
    Inventors: Moonmo KOO, Sehoon YEA, Kyuwoon KIM, Bumshik LEE
  • Method and device for processing video signal
    Patent number: 9955166
    Abstract: The present invention relates to a method for processing a video signal and a video decoder, wherein an offset parameter of a reference block is acquired, an offset parameter of a current block is acquired by using the offset parameter of the reference block, an adaptive parameter is applied to the current block by using the offset parameter of the current block, and the reference block is a block in a different view point from the current block. According to the present invention, an accurate adaptive parameter can be applied to the current block by using an offset parameter of a reference view point in consideration of a difference between view points when obtaining the offset parameter of the current block.
    Type: Grant
    Filed: October 4, 2013
    Date of Patent: April 24, 2018
    Assignee: LG ELECTRONICS INC.
    Inventors: Taesup Kim, Jin Heo, Jiwook Jung, Sehoon Yea
  • Method and apparatus for processing video signals
    Patent number: 9936219
    Abstract: According to the present invention, a method for processing video signals can determine an interview motion vector of a current block using an interview motion vector of a temporal neighboring block in consideration of a global motion vector. The present invention can obtain an accurate interview motion vector according to obtaining the temporal neighboring block of the current block in consideration of a motion change according to output sequence information and accordingly, can increase the accuracy of inter-prediction.
    Type: Grant
    Filed: November 13, 2013
    Date of Patent: April 3, 2018
    Assignee: LG ELECTRONICS INC.
    Inventors: Jaewon Sung, Sehoon Yea, Moonmo Koo, Jin Heo, Taesup Kim, Jiwook Jung, Eunyong Son
  • Method and apparatus for selecting a filter based on a variance of depth data
    Patent number: 9924169
    Abstract: According to the present invention, a method of processing a video signal includes the steps of: receiving the depth data corresponding to a given block containing present pixels; determining a variation of the depth data; comparing the variation of the depth data with a predetermined value; if the variation is less than the predetermined value, coding the present pixels by using a first partial filter, and if the variation is greater than the predetermined value, coding the present pixels by using a second partial filter; wherein the second partial filter is applied to a wider range than the first partial filter. Accordingly the image quality of improved; the complexity according to the filter application is reduced; and at the same time variable filtering may improve the coding efficiency.
    Type: Grant
    Filed: March 6, 2013
    Date of Patent: March 20, 2018
    Assignee: LG ELECTRONICS INC.
    Inventors: Jin Heo, Jiwook Jung, Sehoon Yea, Moonmo Koo, Taesup Kim, Jaewon Sung, Eunyong Son