Patents by Inventor Tammy Lee

Tammy 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 HIERARCHICAL DATA UNIT-BASED VIDEO ENCODING AND DECODING COMPRISING QUANTIZATION PARAMETER PREDICTION
    Publication number: 20160050415
    Abstract: A method of decoding a video includes determining an initial value of a quantization parameter (QP) used to perform inverse quantization on coding units included in a slice segment, based on syntax obtained from a bitstream; determining a slice-level initial QP for predicting the QP used to perform inverse quantization on the coding units included in the slice segment, based on the initial value of the QP; and determining a predicted QP of a first quantization group of a parallel-decodable data unit included in the slice segment, based on the slice-level initial QP.
    Type: Application
    Filed: October 28, 2015
    Publication date: February 18, 2016
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Tammy LEE
  • METHOD AND APPARATUS FOR DETERMINING REFERENCE IMAGES FOR INTER-PREDICTION
    Publication number: 20160050433
    Abstract: A method of determining a reference image for inter-prediction includes: determining a slice type of a block; if the determining of the slice type indicates that the slice type is a B-slice type configured for uni-directional prediction or bi-directional prediction, determining an inter-prediction direction of the block to be one of a first direction, a second direction, and a bi-direction; if the determining of the inter-prediction direction indicates that the inter-prediction direction is not the second direction, determining a first direction reference index from a first direction reference picture list as a reference index for the block; and if the determining of the inter-prediction direction indicates that the inter-prediction direction is not the first direction, determining a second direction reference index from a second direction reference picture list as a reference index for the block.
    Type: Application
    Filed: October 26, 2015
    Publication date: February 18, 2016
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Tammy LEE
  • METHOD AND APPARATUS FOR HIERARCHICAL DATA UNIT-BASED VIDEO ENCODING AND DECODING COMPRISING QUANTIZATION PARAMETER PREDICTION
    Publication number: 20160050414
    Abstract: A method of decoding a video includes determining an initial value of a quantization parameter (QP) used to perform inverse quantization on coding units included in a slice segment, based on syntax obtained from a bitstream; determining a slice-level initial QP for predicting the QP used to perform inverse quantization on the coding units included in the slice segment, based on the initial value of the QP; and determining a predicted QP of a first quantization group of a parallel-decodable data unit included in the slice segment, based on the slice-level initial QP.
    Type: Application
    Filed: October 28, 2015
    Publication date: February 18, 2016
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Tammy LEE
  • METHOD AND APPARATUS FOR HIERARCHICAL DATA UNIT-BASED VIDEO ENCODING AND DECODING COMPRISING QUANTIZATION PARAMETER PREDICTION
    Publication number: 20160050416
    Abstract: A method of decoding a video includes determining an initial value of a quantization parameter (QP) used to perform inverse quantization on coding units included in a slice segment, based on syntax obtained from a bitstream; determining a slice-level initial QP for predicting the QP used to perform inverse quantization on the coding units included in the slice segment, based on the initial value of the QP; and determining a predicted QP of a first quantization group of a parallel-decodable data unit included in the slice segment, based on the slice-level initial QP.
    Type: Application
    Filed: October 28, 2015
    Publication date: February 18, 2016
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Tammy LEE
  • METHOD AND APPARATUS FOR HIERARCHICAL DATA UNIT-BASED VIDEO ENCODING AND DECODING COMPRISING QUANTIZATION PARAMETER PREDICTION
    Publication number: 20160050417
    Abstract: A method of decoding a video includes determining an initial value of a quantization parameter (QP) used to perform inverse quantization on coding units included in a slice segment, based on syntax obtained from a bitstream; determining a slice-level initial QP for predicting the QP used to perform inverse quantization on the coding units included in the slice segment, based on the initial value of the QP; and determining a predicted QP of a first quantization group of a parallel-decodable data unit included in the slice segment, based on the slice-level initial QP.
    Type: Application
    Filed: October 28, 2015
    Publication date: February 18, 2016
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Tammy LEE
  • Method and apparatus for performing interpolation based on transform and inverse transform
    Patent number: 9262804
    Abstract: Provided are a method and apparatus for interpolating an image. The method includes: selecting a first filter, from among a plurality of different filters, for interpolating between pixel values of integer pixel units, according to an interpolation location; and generating at least one pixel value of at least one fractional pixel unit by interpolating between the pixel values of the integer pixel units by using the selected first filter.
    Type: Grant
    Filed: March 18, 2014
    Date of Patent: February 16, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Elena Alshina, Alexander Alshin, Nikolay Shlyakhov, Byeong-doo Choi, Yoon-mi Hong, Woo-jin Han, Tammy Lee
  • Method and apparatus for encoding video by using deblocking filtering, and method and apparatus for decoding video by using deblocking filtering
    Patent number: 9264738
    Abstract: A method and apparatus for encoding video by using deblocking filtering, and a method and apparatus for decoding video by using deblocking filtering are provided. The method of encoding video includes: splitting a picture into a maximum coding unit; determining coding units of coded depths and encoding modes for the coding units of the maximum coding unit by prediction encoding the coding units of the maximum coding unit based on at least one prediction unit and transforming the coding units based on at least one transformation unit, wherein the maximum coding unit is hierarchically split into the coding units as a depth deepens, and the coded depths are depths where the maximum coding unit is encoded in the coding units; and performing deblocking filtering on video data being inversely transformed into a spatial domain in the coding units, in consideration of the encoding modes.
    Type: Grant
    Filed: January 20, 2015
    Date of Patent: February 16, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jung-hye Min, Tammy Lee, Il-koo Kim
  • METHOD AND APPARATUS FOR DETERMINING REFERENCE IMAGES FOR INTER-PREDICTION
    Publication number: 20160044334
    Abstract: A method of determining a reference image for inter-prediction includes: determining a slice type of a block; if the determining of the slice type indicates that the slice type is a B-slice type configured for uni-directional prediction or bi-directional prediction, determining an inter-prediction direction of the block to be one of a first direction, a second direction, and a bi-direction; if the determining of the inter-prediction direction indicates that the inter-prediction direction is not the second direction, determining a first direction reference index from a first direction reference picture list as a reference index for the block; and if the determining of the inter-prediction direction indicates that the inter-prediction direction is not the first direction, determining a second direction reference index from a second direction reference picture list as a reference index for the block.
    Type: Application
    Filed: October 26, 2015
    Publication date: February 11, 2016
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Tammy LEE
  • METHOD AND APPARATUS FOR DETERMINING REFERENCE IMAGES FOR INTER-PREDICTION
    Publication number: 20160044335
    Abstract: A method of determining a reference image for inter-prediction includes: determining a slice type of a block; if the determining of the slice type indicates that the slice type is a B-slice type configured for uni-directional prediction or bi-directional prediction, determining an inter-prediction direction of the block to be one of a first direction, a second direction, and a bi-direction; if the determining of the inter-prediction direction indicates that the inter-prediction direction is not the second direction, determining a first direction reference index from a first direction reference picture list as a reference index for the block; and if the determining of the inter-prediction direction indicates that the inter-prediction direction is not the first direction, determining a second direction reference index from a second direction reference picture list as a reference index for the block.
    Type: Application
    Filed: October 26, 2015
    Publication date: February 11, 2016
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Tammy LEE
  • Method and apparatus for encoding motion information, and method and apparatus for decoding same
    Patent number: 9253500
    Abstract: A method and apparatus for encoding and decoding motion information. The encoding method includes determining whether motion information of spatial prediction units that are spatially collocated to a current prediction unit and motion information of temporal prediction units that are temporally collocated to the current prediction are available; when the number of the motion information of the spatial prediction units and the motion information of the temporal prediction units is less than a predetermined number, generating additional candidate motion information by using the available motion information of the spatial prediction units and the motion information of the temporal prediction units such that the total number of pieces of candidate motion information is the predetermined number; and decoding motion information of the current prediction unit by using the ‘n’ pieces of motion information.
    Type: Grant
    Filed: February 13, 2015
    Date of Patent: February 2, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Tammy Lee
  • Methods and apparatuses for encoding and decoding motion vector
    Patent number: 9253492
    Abstract: Encoding and decoding a motion vector using a motion vector of a current block of a current picture, which indicates a region corresponding to the current block in a first reference picture and one of generating a motion vector predictor from a motion vector of the adjacent block having a motion vector referring to the first reference picture among adjacent blocks encoded before the current block and a motion vector of an adjacent block referring to a second reference picture other than the first reference picture.
    Type: Grant
    Filed: February 5, 2015
    Date of Patent: February 2, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Tammy Lee, Vadim Seregin
  • Method and apparatus for encoding motion information, and method and apparatus for decoding same
    Patent number: 9253501
    Abstract: A method and apparatus for encoding and decoding motion information. The encoding method includes determining whether motion information of spatial prediction units that are spatially collocated to a current prediction unit and motion information of temporal prediction units that are temporally collocated to the current prediction are available; when the number of the motion information of the spatial prediction units and the motion information of the temporal prediction units is less than a predetermined number, generating additional candidate motion information by using the available motion information of the spatial prediction units and the motion information of the temporal prediction units such that the total number of pieces of candidate motion information is the predetermined number; and decoding motion information of the current prediction unit by using the ‘n’ pieces of motion information.
    Type: Grant
    Filed: February 13, 2015
    Date of Patent: February 2, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Tammy Lee
  • METHOD AND APPARATUS FOR ENCODING VIDEO USING VARIABLE PARTITIONS FOR PREDICTIVE ENCODING, AND METHOD AND APPARATUS FOR DECODING VIDEO USING VARIABLE PARTITIONS FOR PREDICTIVE ENCODING
    Publication number: 20150358638
    Abstract: A video encoding method and apparatus and a video decoding method and apparatus are provided. The video encoding method includes: prediction encoding in units of a coding unit as a data unit for encoding a picture, by using partitions determined based on a first partition mode and a partition level, so as to select a partition for outputting an encoding result from among the determined partitions; and encoding and outputting partition information representing a first partition mode and a partition level of the selected partition. The first partition mode represents a shape and directionality of a partition as a data unit for performing the prediction encoding on the coding unit, and the partition level represents a degree to which the coding unit is split into partitions for detailed motion prediction.
    Type: Application
    Filed: August 20, 2015
    Publication date: December 10, 2015
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Chang-Hyun LEE, Tammy LEE, Jianle CHEN, Dae-Sung CHO, Woo-Jin HAN, Il-Koo KIM
  • Method and apparatus for encoding motion information, and method and apparatus for decoding same
    Patent number: 9204162
    Abstract: A method and apparatus for encoding and decoding motion information. The encoding method includes determining whether motion information of spatial prediction units that are spatially collocated to a current prediction unit and motion information of temporal prediction units that are temporally collocated to the current prediction are available; when the number of the motion information of the spatial prediction units and the motion information of the temporal prediction units is less than a predetermined number, generating additional candidate motion information by using the available motion information of the spatial prediction units and the motion information of the temporal prediction units such that the total number of pieces of candidate motion information is the predetermined number; and decoding motion information of the current prediction unit by using the ‘n’ pieces of motion information.
    Type: Grant
    Filed: February 13, 2015
    Date of Patent: December 1, 2015
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Tammy Lee
  • Method and apparatus for encoding motion information, and method and apparatus for decoding same
    Patent number: 9204160
    Abstract: A method and apparatus for encoding and decoding motion information. The encoding method includes determining whether motion information of spatial prediction units that are spatially collocated to a current prediction unit and motion information of temporal prediction units that are temporally collocated to the current prediction are available; when the number of the motion information of the spatial prediction units and the motion information of the temporal prediction units is less than a predetermined number, generating additional candidate motion information by using the available motion information of the spatial prediction units and the motion information of the temporal prediction units such that the total number of pieces of candidate motion information is the predetermined number; and decoding motion information of the current prediction unit by using the ‘n’ pieces of motion information.
    Type: Grant
    Filed: June 27, 2012
    Date of Patent: December 1, 2015
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Tammy Lee
  • METHOD FOR ENTROPY-ENCODING SLICE SEGMENT AND APPARATUS THEREFOR, AND METHOD FOR ENTROPY-DECODING SLICE SEGMENT AND APPARATUS THEREFOR
    Publication number: 20150341670
    Abstract: Provided are entropy encoding and entropy decoding for video encoding and decoding. The video entropy decoding method includes: determining a bin string and a bin index for a maximum coding unit that is obtained from a bitstream; determining a value of a syntax element by comparing the determined bin string with bin strings that is assignable to the syntax element in the bin index; storing context variables for the maximum coding unit when the syntax element is a last syntax element in the maximum coding unit, a dependent slice segment is includable in a picture in which the maximum coding unit is included, and the maximum coding unit is a last maximum coding unit in a slice segment; and restoring symbols of the maximum coding unit by using the determined value of the syntax element.
    Type: Application
    Filed: July 31, 2015
    Publication date: November 26, 2015
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Tammy LEE, Byeong-doo CHOI
  • METHOD FOR ENTROPY-ENCODING SLICE SEGMENT AND APPARATUS THEREFOR, AND METHOD FOR ENTROPY-DECODING SLICE SEGMENT AND APPARATUS THEREFOR
    Publication number: 20150341668
    Abstract: Provided are entropy encoding and entropy decoding for video encoding and decoding. The video entropy decoding method includes: determining a bin string and a bin index for a maximum coding unit that is obtained from a bitstream; determining a value of a syntax element by comparing the determined bin string with bin strings that is assignable to the syntax element in the bin index; storing context variables for the maximum coding unit when the syntax element is a last syntax element in the maximum coding unit, a dependent slice segment is includable in a picture in which the maximum coding unit is included, and the maximum coding unit is a last maximum coding unit in a slice segment; and restoring symbols of the maximum coding unit by using the determined value of the syntax element.
    Type: Application
    Filed: January 6, 2014
    Publication date: November 26, 2015
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Tammy LEE, Byeong-doo CHOI
  • METHOD FOR ENTROPY-ENCODING SLICE SEGMENT AND APPARATUS THEREFOR, AND METHOD FOR ENTROPY-DECODING SLICE SEGMENT AND APPARATUS THEREFOR
    Publication number: 20150341669
    Abstract: Provided are entropy encoding and entropy decoding for video encoding and decoding. The video entropy decoding method includes: determining a bin string and a bin index for a maximum coding unit that is obtained from a bitstream; determining a value of a syntax element by comparing the determined bin string with bin strings that is assignable to the syntax element in the bin index; storing context variables for the maximum coding unit when the syntax element is a last syntax element in the maximum coding unit, a dependent slice segment is includable in a picture in which the maximum coding unit is included, and the maximum coding unit is a last maximum coding unit in a slice segment; and restoring symbols of the maximum coding unit by using the determined value of the syntax element.
    Type: Application
    Filed: July 31, 2015
    Publication date: November 26, 2015
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Tammy LEE, Byeong-doo CHOI
  • METHOD FOR ENTROPY-ENCODING SLICE SEGMENT AND APPARATUS THEREFOR, AND METHOD FOR ENTROPY-DECODING SLICE SEGMENT AND APPARATUS THEREFOR
    Publication number: 20150341672
    Abstract: Provided are entropy encoding and entropy decoding for video encoding and decoding. The video entropy decoding method includes: determining a bin string and a bin index for a maximum coding unit that is obtained from a bitstream; determining a value of a syntax element by comparing the determined bin string with bin strings that is assignable to the syntax element in the bin index; storing context variables for the maximum coding unit when the syntax element is a last syntax element in the maximum coding unit, a dependent slice segment is includable in a picture in which the maximum coding unit is included, and the maximum coding unit is a last maximum coding unit in a slice segment; and restoring symbols of the maximum coding unit by using the determined value of the syntax element.
    Type: Application
    Filed: July 31, 2015
    Publication date: November 26, 2015
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Tammy LEE, Byeong-doo CHOI
  • METHOD FOR ENTROPY-ENCODING SLICE SEGMENT AND APPARATUS THEREFOR, AND METHOD FOR ENTROPY-DECODING SLICE SEGMENT AND APPARATUS THEREFOR
    Publication number: 20150341671
    Abstract: Provided are entropy encoding and entropy decoding for video encoding and decoding. The video entropy decoding method includes: determining a bin string and a bin index for a maximum coding unit that is obtained from a bitstream; determining a value of a syntax element by comparing the determined bin string with bin strings that is assignable to the syntax element in the bin index; storing context variables for the maximum coding unit when the syntax element is a last syntax element in the maximum coding unit, a dependent slice segment is includable in a picture in which the maximum coding unit is included, and the maximum coding unit is a last maximum coding unit in a slice segment; and restoring symbols of the maximum coding unit by using the determined value of the syntax element.
    Type: Application
    Filed: July 31, 2015
    Publication date: November 26, 2015
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Tammy LEE, Byeong-doo CHOI