Patents by Inventor Jin-Soo Choi

Jin-Soo Choi 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/decoding method and device, and recording medium in which bitstream is stored
    Patent number: 11503316
    Abstract: The present invention relates to an image encoding/decoding method and device. The image decoding method according to the present invention comprises the steps of: decoding a prediction mode index; determining whether the prediction mode index indicates function-based intra prediction; inducing a parameter(s) for generating a function, when the prediction mode index indicates the function-based intra prediction; generating the function on the basis of the induced parameter(s); and performing intra prediction by using the generated function.
    Type: Grant
    Filed: November 13, 2020
    Date of Patent: November 15, 2022
    Assignee: RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY
    Inventors: Seung Hyun Cho, Jung Won Kang, Hyun Suk Ko, Sung Chang Lim, Jin Ho Mes Lee, Ha Hyun Lee, Dong San Jun, Hui Yong Kim, Byeung Woo Jeon, Nam Uk Kim, Seung Su Jeon, Jin Soo Choi
  • Decoding method and device for bit stream supporting plurality of layers
    Patent number: 11490100
    Abstract: The present invention relates to a decoding method for a bit stream that supports a plurality of layers. The decoding method may include receiving information on a set of video parameters that includes information on the plurality of layers, and parsing the set of video parameters to grasp information on the layers in the bit stream.
    Type: Grant
    Filed: February 12, 2021
    Date of Patent: November 1, 2022
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Jung Won Kang, Ha Hyun Lee, Jin Soo Choi, Jin Woong Kim
  • Residual coding method of linear prediction coding coefficient based on collaborative quantization, and computing device for performing the method
    Patent number: 11488613
    Abstract: Disclosed are a method for coding a residual signal of LPC coefficients based on collaborative quantization and a computing device for performing the method. The residual signal coding method includes: generating encoded LPC coefficients and LPC residual signals by performing LPC analysis and quantization on an input speech; Determining a predicted LPC residual signal by applying the LPC residual signal to cross module residual learning; Performing LPC synthesis using the coded LPC coefficients and the predicted LPC residual signal; It may include the step of determining an output speech that is a synthesized output according to a result of performing the LPC synthesis.
    Type: Grant
    Filed: November 13, 2020
    Date of Patent: November 1, 2022
    Assignees: Electronics and Telecommunications Research Institute, The Trustees of Indiana University
    Inventors: Minje Kim, Kai Zhen, Mi Suk Lee, Seung Kwon Beack, Jongmo Sung, Tae Jin Lee, Jin Soo Choi
  • INTER-PREDICTION METHOD AND APPARATUS FOR SAME
    Publication number: 20220345719
    Abstract: An inter-prediction method according to the present invention comprises the steps of: deriving motion information of a current block; and generating a prediction block for the current block on the basis of the derived motion information. According to the present invention, computational complexity can be reduced and encoding efficiency can be improved.
    Type: Application
    Filed: July 5, 2022
    Publication date: October 27, 2022
    Applicants: Electronics and Telecommunications Research Institute, University-Industry Cooperation Group of Kyung Hee University
    Inventors: Hui Yong KIM, Gwang Hoon PARK, Kyung Yong KIM, Sung Chang LIM, Jin Ho LEE, Jin Soo CHOI, Jin Woong KIM
  • Image information decoding method, image decoding method, and device using same
    Patent number: 11483578
    Abstract: The present invention relates to an image information decoding method. The decoding method includes receiving a bit stream including a Network Abstraction Layer (NAL) unit that includes information related to encoded image, and parsing a NAL unit header of the NAL unit. The NAL unit header may not include 1 bit flag information that represents whether a picture is a non-reference picture or a reference picture in the entire bit stream during encoding.
    Type: Grant
    Filed: January 8, 2021
    Date of Patent: October 25, 2022
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Jung Won Kang, Ha Hyun Lee, Jin Soo Choi, Jin Woong Kim
  • METHOD AND DEVICE FOR SHARING A CANDIDATE LIST
    Publication number: 20220337845
    Abstract: The present invention relates to a method and device for sharing a candidate list. A method of generating a merging candidate list for a predictive block may include: producing, on the basis of a coding block including a predictive block on which a parallel merging process is performed, at least one of a spatial merging candidate and a temporal merging candidate of the predictive block; and generating a single merging candidate list for the coding block on the basis of the produced merging candidate. Thus, it is possible to increase processing speeds for coding and decoding by performing inter-picture prediction in parallel on a plurality of predictive blocks.
    Type: Application
    Filed: July 7, 2022
    Publication date: October 20, 2022
    Applicants: Electronics and Telecommunications Research Institute, UNIVERSITY-INDUSTRY COOPERATION GROUP OF KYUNG HEE UNIVERSITY
    Inventors: Hui Yong KIM, Gwang Hoon PARK, Kyung Yong KIM, Sang Min KIM, Sung Chang LIM, Jin Ho LEE, Jin Soo CHOI, Jin Woong KIM
  • Method and apparatus for encoding and decoding image, and recording medium for storing bitstream
    Patent number: 11477442
    Abstract: An image encoding method and an image decoding method are provided. The image decoding method includes deriving a temporal merge candidate from a co-located block of a current block, generating a merge candidate list of the current block based on the derived temporal merge candidate, and generating a prediction block of the current block based on the generated merge candidate list. The deriving a temporal merge candidate includes scaling a motion vector derived from the co-located block based on a POC difference value between the current block and a reference picture of the current block and a POC difference value between the co-located block and a reference picture of the co-located block, and modifying the scaled motion vector based on motion vector scaling information between a neighboring block of the current block and a co-located block of the neighboring block.
    Type: Grant
    Filed: September 26, 2017
    Date of Patent: October 18, 2022
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Dong San Jun, Ha Hyun Lee, Jung Won Kang, Hyun Suk Ko, Sung Chang Lim, Jin Ho Lee, Seung Hyun Cho, Hui Yong Kim, Jin Soo Choi
  • Method and device for compressing image and neural network using hidden variable
    Patent number: 11477468
    Abstract: A method and apparatus for image compression using a latent variable are provided. The multiple components of the latent variable may be sorted in order of importance. Through sorting, when the feature information of only some of the multiple components is used, the quality of a reconstructed image may be improved. In order to generate a latent variable, the components of which are sorted in order of importance, learning may be performed in various manners. Also, less important information may be eliminated from the latent variable, and processing, such as quantization, may be applied to the latent variable. Through elimination and processing, the amount of data for the latent variable may be reduced.
    Type: Grant
    Filed: October 30, 2018
    Date of Patent: October 18, 2022
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Joo-Young Lee, Seung-Hyun Cho, Youn-Hee Kim, Jin-Wuk Seok, Woong Lim, Jong-Ho Kim, Dae-Yeol Lee, Se-Yoon Jeong, Hui-Yong Kim, Jin-Soo Choi
  • METHOD FOR CODING AND DECODING SCALABLE VIDEO AND APPARATUS USING SAME
    Publication number: 20220329834
    Abstract: The present invention relates to a method and an apparatus for interlayer prediction, and the method for interlayer prediction, according to the present invention, comprises the steps of: deciding whether to apply an interlayer prediction to an enhancement layer; and performing a prediction on a current block of the enhancement layer based on reference information that is generalized and generated from a reference picture, which is decoded, of a reference layer, when the interlayer prediction is applied, wherein the reference layer information can be encoding information of a reference block, which corresponds to a current block of the enhancement layer, from the reference layer, and residual information.
    Type: Application
    Filed: June 29, 2022
    Publication date: October 13, 2022
    Applicants: Electronics and Telecommunications Research Institute, KWANGWOON UNIVERSITY INDUSTRY-ACADEMIC COLLABORATION FOUNDATION
    Inventors: Ha Hyun LEE, Jung Won KANG, Jin Soo CHOI, Jin Woong KIM, Dong Gyu SIM, Hyo Min CHOI, Jung Hak NAM
  • Method and apparatus for image coding/decoding
    Patent number: 11470342
    Abstract: A method for decoding an image according to the present invention comprises the steps of: decoding a residual block by quantizing and inverse transforming an entropy-decoded residual block; generating a prediction block via motion compensation; and decoding an image by adding the decoded residual block to the prediction block, wherein on the basis of the maximum number of motion vector candidates of the motion vector candidate list related to the prediction block, a motion vector candidate list is adjusted by adding a particular motion vector candidate or by discarding a portion from among the motion vector candidates, and in the prediction block generation step, a prediction motion vector of the prediction block is determined on the basis of the adjusted motion vector candidate list. Accordingly, the complexity of arithmetic operations is reduced during encoding/decoding of an image.
    Type: Grant
    Filed: March 26, 2021
    Date of Patent: October 11, 2022
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Sung Chang Lim, Hui Yong Kim, Jin Ho Lee, Jin Soo Choi, Jin Woong Kim
  • Method and apparatus for encoding/decoding intra prediction mode
    Patent number: 11451767
    Abstract: Provided are method and apparatus methods and apparatuses for encoding an intra-prediction mode based on a secondary IPM. The present invention may comprises a first decision step of determining whether an intra-prediction mode of a current block is included in a first candidate mode set including M candidate modes (M is an integer equal to or greater than 1); a second decision step of determining whether the intra-prediction mode of the current block is included in a second candidate mode set including N candidate modes (N is an integer equal to or greater than 1) based on a first determination result representing a determination result of the first decision step; and an intra prediction mode encoding step of encoding the intra-prediction mode of the current block based on the first determination result or a second determination result representing a determination result of the second decision step.
    Type: Grant
    Filed: November 18, 2016
    Date of Patent: September 20, 2022
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Dong San Jun, Jung Won Kang, Sung Chang Lim, Hyun Suk Ko, Jin Ho Lee, Hui Yong Kim, Jin Soo Choi
  • METHOD AND DEVICE FOR ENCODING/DECODING IMAGES
    Publication number: 20220295065
    Abstract: A method and a device for encoding/decoding images are disclosed. The method for encoding images comprises the steps of: deriving a scan type of a residual signal for a current block according to whether or not the current block is a transform skip block; and applying the scan type to the residual signal for the current block, wherein the transform skip block is a block to which transform for the current block is not applied and is specified on the basis of information indicating whether or not transform for the current block is to be applied.
    Type: Application
    Filed: May 31, 2022
    Publication date: September 15, 2022
    Applicants: Electronics and Telecommunications Research Institute, UNIVERSITY-INDUSTRY COOPERATION GROUP OF KYUNG HEE UNIVERSITY
    Inventors: Hui Yong KIM, Sung Chang LIM, Jin Ho LEE, Jin Soo CHOI, Jin Woong KIM, Gwang Hoon PARK, Kyung Yong KIM
  • METHOD AND DEVICE FOR ENCODING/DECODING IMAGES
    Publication number: 20220295066
    Abstract: A method and a device for encoding/decoding images are disclosed. The method for encoding images comprises the steps of: deriving a scan type of a residual signal for a current block according to whether or not the current block is a transform skip block; and applying the scan type to the residual signal for the current block, wherein the transform skip block is a block to which transform for the current block is not applied and is specified on the basis of information indicating whether or not transform for the current block is to be applied.
    Type: Application
    Filed: May 31, 2022
    Publication date: September 15, 2022
    Applicants: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, UNIVERSITY-INDUSTRY COOPERATION GROUP OF KYUNG HEE UNIVERSITY
    Inventors: Hui Yong KIM, Sung Chang LIM, Jin Ho LEE, Jin Soo CHOI, Jin Woong KIM, Gwang Hoon PARK, Kyung Yong KIM
  • Method for determining color difference component quantization parameter and device using the method
    Patent number: 11445196
    Abstract: Disclosed are a method for determining a color difference component quantization parameter and a device using the method. Method for decoding an image can comprise the steps of: decoding a color difference component quantization parameter offset on the basis of size information of a transform unit; and calculating a color difference component quantization parameter index on the basis of the decoded color difference component quantization parameter offset. Therefore, the present invention enables effective quantization by applying different color difference component quantization parameters according to the size of the transform unit when executing the quantization.
    Type: Grant
    Filed: May 17, 2021
    Date of Patent: September 13, 2022
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Sung Chang Lim, Hui Yong Kim, Se Yoon Jeong, Jong Ho Kim, Ha Hyun Lee, Jin Ho Lee, Jin Soo Choi, Jin Woong Kim
  • Method for determining color difference component quantization parameter and device using the method
    Patent number: 11438593
    Abstract: Disclosed are a method for determining a color difference component quantization parameter and a device using the method. Method for decoding an image can comprise the steps of: decoding a color difference component quantization parameter offset on the basis of size information of a transform unit; and calculating a color difference component quantization parameter index on the basis of the decoded color difference component quantization parameter offset. Therefore, the present invention enables effective quantization by applying different color difference component quantization parameters according to the size of the transform unit when executing the quantization.
    Type: Grant
    Filed: May 17, 2021
    Date of Patent: September 6, 2022
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Sung Chang Lim, Hui Yong Kim, Se Yoon Jeong, Jong Ho Kim, Ha Hyun Lee, Jin Ho Lee, Jin Soo Choi, Jin Woong Kim
  • Video encoding/decoding method and apparatus, and recording medium in which bit stream is stored
    Patent number: 11438589
    Abstract: An image encoding/decoding method and apparatus are provided. An image decoding method performed by an image decoding apparatus of the present invention may comprise decoding an indicator indicating whether or not partition information of a current block is derived from partition information of a corresponding block of the current block, obtaining the partition information of the current block based on the decoded indicator, and partitioning the current block based on the obtained partition information.
    Type: Grant
    Filed: December 22, 2020
    Date of Patent: September 6, 2022
    Assignees: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, INDUSTRY-UNIVERSITY COOPERATION FOUNDATION KOREA AEROSPACE UNIVERSITY, HANBAT NATIONAL UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION
    Inventors: Jin Ho Lee, Jung Won Kang, Hyun Suk Ko, Sung Chang Lim, Ha Hyun Lee, Dong San Jun, Seung Hyun Cho, Hui Yong Kim, Hae Chui Choi, Aram Back, Jin Soo Choi, Jae Gon Kim
  • IMAGE ENCODING/DECODING METHOD AND DEVICE, AND RECORDING MEDIUM IN WHICH BITSTREAM IS STORED
    Publication number: 20220279171
    Abstract: The present invention relates to an image encoding/decoding method and apparatus. An image decoding method performing intra prediction according to the present invention may comprise dividing a current block into at least one sub-block; deriving an intra prediction mode for the at least one sub-block; constructing a reference sample for the intra prediction; and performing intra prediction for the at least one sub-block based on the derived intra prediction mode.
    Type: Application
    Filed: May 16, 2022
    Publication date: September 1, 2022
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Jin Ho LEE, Sung Chang LIM, Jung Won KANG, Hyun Suk KO, Dong San JUN, Ha Hyun LEE, Seung Hyun CHO, Hui Yong KIM, Jin Soo CHOI
  • METHOD AND DEVICE FOR MACHINE LEARNING-BASED IMAGE COMPRESSION USING GLOBAL CONTEXT
    Publication number: 20220277491
    Abstract: Disclosed herein are a method and apparatus for image compression based on machine learning using a global context. The disclosed image compression network employs an existing image quality enhancement network for an end-to-end joint learning scheme. The image compression network may jointly optimize image compression enhancement and quality enhancement. The image compression networks and image quality enhancement networks may be easily combined within a unified architecture which minimizes total loss, and may be easily jointly optimized.
    Type: Application
    Filed: May 29, 2020
    Publication date: September 1, 2022
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Joo-Young LEE, Seung-Hyun CHO, Hyunsuk KO, Hyoung-Jin KWON, Youn-Hee KIM, Jong-Ho KIM, Se-Yoon JEONG, Hui-Yong KIM, Jin-Soo CHOI
  • Method and device for encoding/decoding image using geometrically modified picture
    Patent number: 11425370
    Abstract: The present invention relates to a method and apparatus for video encoding/decoding by using a geometric modified picture. The encoding method according to the present invention includes: generating a geometric modified picture by geometrically modifying a reference picture; and generating a first prediction block of a current block by performing inter prediction referencing the geometric modified picture.
    Type: Grant
    Filed: April 2, 2021
    Date of Patent: August 23, 2022
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Jung Won Kang, Hyun Suk Ko, Sung Chang Lim, Jin Ho Lee, Dong San Jun, Hui Yong Kim, Gwang Hoon Park, Jin Soo Choi, Tae Hyun Kim, Dae Young Lee, Young Su Heo
  • METHOD AND DEVICE FOR INTRA-PREDICTION
    Publication number: 20220264149
    Abstract: The multi sample prediction method of the present invention comprises the steps of: determining a sample group consisting of a plurality of samples inside a decoding target block; determining a representative position corresponding to the sample group, inside the decoding target block; determining a representative prediction value for the sample group, on the basis of the determined representative position; and determining the determined representative prediction value as the final prediction value for each of the plurality of samples making up the sample group. The present invention enhances efficiency in encoding/decoding and reduces complexity thereof.
    Type: Application
    Filed: April 29, 2022
    Publication date: August 18, 2022
    Inventors: Jin Ho Lee, Hui Yong Kim, Sung Chang Lim, Jong Ho Kim, Ha Hyun Lee, Jin Soo Choi, Jin Woong Kim