Patents by Inventor Bae-keun Lee

Bae-keun Lee 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 APPARATUS FOR COEFFICIENT SCAN BASED ON PARTITION MODE OF PREDICTION UNIT
    Publication number: 20160316208
    Abstract: Provided are a method and an apparatus for coefficient scan on the base of a partition mode of a prediction unit. The method comprises the steps of: determining a scan method on the basis of a partition mode of a prediction unit; and encoding the information about the scan method, wherein the scan method is determined, on the basis of RDO (Rate Distortion optimization), from among the extracted candidate scan methods which have been extracted with consideration of the shapes of the partitions of the partition mode.
    Type: Application
    Filed: July 7, 2016
    Publication date: October 27, 2016
    Applicant: KT CORPORATION
    Inventors: Bae Keun LEE, Jae Cheol KWON, Joo Young KIM
  • METHOD FOR INDUCING A MERGE CANDIDATE BLOCK AND DEVICE USING SAME
    Publication number: 20160295236
    Abstract: The present invention relates to a method for inducing a merge candidate block and a device using same. An image decoding method involves decoding motion estimation region (MER) related information; determining whether or not a predicted target block and a spatial merge candidate block are included in the same MER; and determining the spatial merge candidate block to be an unavailable merge candidate block when the predicted target block and the spatial merge candidate block are included in the same MER. Accordingly, by parallely performing the method for inducing a merge candidate, parallel processing is enabled and the computation amount and implementation complexity are reduced.
    Type: Application
    Filed: June 16, 2016
    Publication date: October 6, 2016
    Applicant: KT CORPORATION
    Inventors: Bae Keun LEE, Jae Cheol KWON, Joo Young KIM
  • MULTILAYER VIDEO SIGNAL ENCODING/DECODING METHOD AND DEVICE
    Publication number: 20160286234
    Abstract: Abstract: A scalable video signal decoding method according to the present invention is characterised in that whether or not a corresponding picture in a lower layer is being used as an inter layer reference picture for a current picture in an upper layer is determined on the basis of a time level identifier for the lower layer, and if the corresponding picture in the lower layer is being used as an inter layer reference picture for the current picture in the upper layer, inter layer prediction of the current picture is carried out using the corresponding picture, and the current picture is restored using a prediction sample obtained by means of inter layer prediction and a residual sample of the current picture.
    Type: Application
    Filed: October 28, 2014
    Publication date: September 29, 2016
    Applicant: KT CORPORATION
    Inventors: Bae Keun LEE, Joo Young KIM
  • METHOD AND DEVICE FOR ENCODING/DECODING MULTI-LAYER VIDEO SIGNAL
    Publication number: 20160269745
    Abstract: A method for decoding a multi-layer video signal, according to the present invention, determines whether a corresponding picture in a lower layer is used as an inter-layer reference picture for a current picture in an upper layer, on the basis of a temporal level identifier of the lower layer, performs inter-layer prediction for the current picture by using the corresponding picture if the corresponding picture in the lower layer is used as the inter-layer reference picture for the current picture in the upper layer, reconstructs the current picture by using a prediction sample acquired through the inter-layer prediction and a residual sample of the current picture, and selectively applies a loop filter to a tile boundary of the reconstructed current picture on the basis of a layer filter flag for the upper layer.
    Type: Application
    Filed: October 21, 2014
    Publication date: September 15, 2016
    Applicant: KT CORPORATION
    Inventors: Bae Keun LEE, Joo Young KIM
  • METHOD AND DEVICE FOR ENCODING/DECODING MULTI-LAYER VIDEO SIGNAL
    Publication number: 20160255343
    Abstract: A method for decoding a multi-layer video signal, according to the present invention, determines whether a corresponding picture in a lower layer is used as an inter-layer reference picture for a current picture in an upper layer, on the basis of a time level identifier of the lower layer, and restrictively performs inter-layer prediction for the current picture on the basis of a tile boundary alignment flag indicating whether tile alignment is performed between the upper layer and the lower layer if the corresponding picture in the lower layer is used as the inter-layer reference picture for the current picture in the upper layer.
    Type: Application
    Filed: October 21, 2014
    Publication date: September 1, 2016
    Applicant: KT CORPORATION
    Inventors: Bae Keun LEE, Joo Young KIM
  • Method and apparatus for encoding image, and method and apparatus for decoding image
    Patent number: 9432684
    Abstract: The present invention discloses a method and an apparatus for encoding and decoding video. A video decoding method comprises reconstructing a residual value by entropy-decoding received bitstream and dequantizing and inverse-transforming residual value information, generating a final prediction unit by performing inter prediction on a prediction unit which is partitioned from a coding unit into at least two prediction units by asymmetric motion partitioning (AMP), the two partitioned prediction units comprising a first partitioned prediction unit and a second partitioned prediction unit, and reconstructing a picture by adding the final prediction unit to the residual values.
    Type: Grant
    Filed: January 26, 2015
    Date of Patent: August 30, 2016
    Assignee: KT CORPORATION
    Inventors: Bae Keun Lee, Jae Cheol Kwon, Joo Young Kim
  • Method and apparatus for encoding image, and method and apparatus for decoding image
    Patent number: 9432683
    Abstract: The present invention discloses a method and an apparatus for encoding and decoding video. A video decoding method comprises reconstructing a residual value by entropy-decoding received bitstream and dequantizing and inverse-transforming residual value information, generating a final prediction unit by performing inter prediction on a prediction unit which is partitioned from a coding unit into at least two prediction units by asymmetric motion partitioning (AMP), the two partitioned prediction units comprising a first partitioned prediction unit and a second partitioned prediction unit, and reconstructing a picture by adding the final prediction unit to the residual values.
    Type: Grant
    Filed: November 2, 2012
    Date of Patent: August 30, 2016
    Assignee: KT CORPORATION
    Inventors: Bae Keun Lee, Jae Cheol Kwon, Joo Young Kim
  • METHOD AND APPARATUS FOR ENCODING/DECODING MULTILAYER VIDEO SIGNAL
    Publication number: 20160249058
    Abstract: A scalable video signal decoding method, according to the present invention, determines a corresponding picture belonging to a lower layer used for an inter-layer prediction of a current picture belonging to an upper layer, and performs the inter-layer prediction of the current picture by using the corresponding picture in the determined lower layer, wherein the inter-layer prediction is restrictively performed according to a tile boundary alignment flag indicating whether tiles between the upper layer and the lower layer are aligned.
    Type: Application
    Filed: October 22, 2014
    Publication date: August 25, 2016
    Applicant: KT CORPORATION
    Inventors: Bae Keun LEE, Joo Young KIM
  • METHOD AND APPARATUS FOR ENCODING/DECODING MULTILAYER VIDEO SIGNAL
    Publication number: 20160249057
    Abstract: A scalable video signal decoding method, according to the present invention, determines a corresponding picture belonging to a lower layer used for an inter-layer prediction of a current picture belonging to an upper layer, performs the inter-layer prediction of the current picture by using the corresponding picture of the determined lower layer, restores the current picture by using a prediction sample acquired through the inter-layer prediction and a residual sample of the current picture, and selectively applies a loop filter to a tile boundary of the restored current picture on the basis of a layer filter flag for the upper layer.
    Type: Application
    Filed: October 22, 2014
    Publication date: August 25, 2016
    Applicant: KT CORPORATION
    Inventors: Bae Keun LEE, Joo Young KIM
  • MULTILAYER VIDEO SIGNAL ENCODING/DECODING METHOD AND DEVICE
    Publication number: 20160241883
    Abstract: The multilayer video signal decoding method according to the present invention is characterised in that whether or not a corresponding picture in a lower layer is being used as an inter layer reference picture for a current picture in an upper layer is determined on the basis of a time level identifier for the lower layer, and if the corresponding picture in the lower layer is being used as an inter layer reference picture for the current picture in the upper layer, inter layer prediction of the current picture is carried out using the corresponding picture, and the current picture is restored using a prediction sample obtained by means of inter layer prediction and a residual sample of the current picture.
    Type: Application
    Filed: October 28, 2014
    Publication date: August 18, 2016
    Applicant: KT CORPORATION
    Inventors: Bae Keun LEE, Joo Young KIM
  • Method and apparatus for entropy encoding/decoding a transform coefficient
    Patent number: 9414063
    Abstract: A method and apparatus for entropy coding and decoding a transformation block are provided. The method of entropy coding a transformation block includes: determining, according to a certain scan order, a location of a last significant transformation coefficient having a non-zero value from among transformation coefficients included in a transformation block having a certain size; and coding information about the determined location of the last significant transformation coefficient by using a horizontal axis direction location of the last significant transformation coefficient and a vertical axis direction location in the transformation block of the last significant transformation coefficient.
    Type: Grant
    Filed: July 8, 2011
    Date of Patent: August 9, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Bae-Keun Lee, Yu-Mi Sohn
  • METHOD AND APPARATUS FOR ENCODING/DECODING SCALABLE VIDEO SIGNAL
    Publication number: 20160227230
    Abstract: A method for decoding a scalable video signal, according to the present invention, comprises: determining whether a corresponding picture in a lower layer is used as an inter-layer reference picture for a current picture in an upper layer, based on a temporal level identifier of the lower layer; and performing inter-layer prediction of the current picture using the corresponding picture, when the corresponding picture in the lower layer is used as the inter-layer reference picture for the current picture in the upper layer, wherein the inter-layer prediction is limitedly performed depending on tile alignment between the upper layer and the lower layer.
    Type: Application
    Filed: September 11, 2014
    Publication date: August 4, 2016
    Applicant: KT CORPORATION
    Inventors: Bae Keun LEE, Joo Young KIM
  • METHOD AND APPARATUS FOR ENCODING/DECODING SCALABLE VIDEO SIGNAL
    Publication number: 20160219287
    Abstract: A method for decoding a scalable video signal, according to the present invention, comprises: determining a corresponding picture belonging to a lower layer, which is used for inter-layer prediction of a current picture belonging to an upper layer; and performing inter-layer prediction of the current picture by using the determined corresponding picture in the lower layer, wherein the inter-layer prediction is limitedly performed depending on tile alignment between the upper layer and the lower layer.
    Type: Application
    Filed: September 11, 2014
    Publication date: July 28, 2016
    Applicant: KT CORPORATION
    Inventors: Bae Keun LEE, Joo Young KIM
  • SCALABLE VIDEO SIGNAL ENCODING/DECODING METHOD AND APPARATUS
    Publication number: 20160198169
    Abstract: A scalable video signal decoding method according to the present invention comprises determining a corresponding picture of a reference layer used for inter-layer prediction of a current picture using interlayer reference information on the current picture of a current layer, generating an interlayer reference picture by up-sampling the determined corresponding picture, generating a reference picture list including a temporal reference picture and the interlayer reference picture, and performing an inter prediction of the current picture on the basis of the reference picture list.
    Type: Application
    Filed: August 29, 2014
    Publication date: July 7, 2016
    Applicant: KT CORPORATION
    Inventors: Bae Keun LEE, Joo Young KIM
  • SCALABLE VIDEO SIGNAL ENCODING/DECODING METHOD AND APPARATUS
    Publication number: 20160198167
    Abstract: A scalable video signal decoding method according to the present invention comprises determining a corresponding picture of a reference layer used for inter-layer prediction of a current picture within a current layer, generating an interlayer reference picture by up-sampling the determined corresponding picture, generating a reference picture list including the interlayer reference picture, and performing an inter prediction of the current picture on the basis of the reference picture list.
    Type: Application
    Filed: August 29, 2014
    Publication date: July 7, 2016
    Applicant: KT CORPORATION
    Inventors: Bae Keun LEE, Joo Young KIM
  • IMAGE ENCODING AND DECODING METHOD SUPPORTING PLURALITY OF LAYERS AND APPARATUS USING SAME
    Publication number: 20160191928
    Abstract: An image decoding method supporting a plurality of layers according to the present invention may comprise the steps of: when an initial reference picture list of a current picture is configured, receiving flag information indicating whether reference picture set information of a reference layer to which the current picture refers is used; generating the initial reference picture list on the basis of the flag information; and predicting the current picture on the basis of the initial reference picture list. Accordingly, the present invention provides a method for generating a reference picture list including a picture of a layer, which is different from a layer to be currently encoded and decoded, and an apparatus using the same.
    Type: Application
    Filed: July 25, 2014
    Publication date: June 30, 2016
    Applicant: KT CORPORATION
    Inventors: Bae Keun LEE, Joo Young KIM
  • IMAGE ENCODING AND DECODING METHOD SUPPORTING PLURALITY OF LAYERS AND APPARATUS USING SAME
    Publication number: 20160182916
    Abstract: An image decoding method supporting a plurality of layers according to the present invention may comprise the steps of: receiving location information on a location in which an inter-layer reference picture set for one or more reference layers, to which a current picture can refer, is added to a reference picture list; generating an initial reference picture list including the inter-layer reference picture set on the basis of the location information; and predicting the current picture on the basis of the initial reference picture list. Accordingly, the present invention provides a method for signaling location information on a location in which an inter-layer reference picture is added to a reference picture list, and an apparatus using the same.
    Type: Application
    Filed: July 25, 2014
    Publication date: June 23, 2016
    Applicant: KT CORPORATION
    Inventors: Bae Keun LEE, Joo Young KIM
  • IMAGE ENCODING AND DECODING METHOD SUPPORTING PLURALITY OF LAYERS AND APPARATUS USING SAME
    Publication number: 20160173893
    Abstract: An image decoding method supporting a plurality of layers according to the present invention may comprise the steps of: generating an inter-layer reference picture set with respect to one or more reference layers to which a current picture can refer; generating an initial reference picture list including the inter-layer reference picture set; and predicting the current picture on the basis of the initial reference picture list. Accordingly, the present invention provides a method for generating a reference picture list including a picture of a layer, which is different from a layer to be currently encoded and decoded, and an apparatus using the same.
    Type: Application
    Filed: July 25, 2014
    Publication date: June 16, 2016
    Applicant: KT CORPORATION
    Inventors: Bae Keun LEE, Joo Young KIM
  • METHOD AND APPARATUS FOR ENCODING/DECODING SCALABLE VIDEO SIGNAL
    Publication number: 20160173889
    Abstract: A method for decoding a scalable video signal according to the present invention determines whether a corresponding picture in a lower layer is used as an inter-layer reference picture for a current picture in an upper layer, based on a time level identifier of the lower layer, generates a reference picture list for the current picture according to the determination and performs an inter-layer prediction for a current block in the current picture, based on the reference picture list.
    Type: Application
    Filed: July 15, 2014
    Publication date: June 16, 2016
    Applicant: KT CORPORATION
    Inventors: Bae Keun LEE, Joo Young KIM
  • METHOD AND APPARATUS FOR ENCODING/DECODING IMAGE USING TRANSFORM SKIP FLAG
    Publication number: 20160165254
    Abstract: A method for decoding an image, according to the present invention, comprises the steps of: deciding a prediction mode that corresponds to a chroma component block; deciding a transform skip mode of the chroma component block from a plurality of transform skip mode candidates, according to the prediction mode that corresponds to the chroma component block; and reverse-transforming the chroma component block on the basis of the transform skip mode that is decided.
    Type: Application
    Filed: February 15, 2016
    Publication date: June 9, 2016
    Applicant: KT CORPORATION
    Inventors: Bae Keun LEE, Jae Cheol KWON, Joo Young KIM