Patents Assigned to Industry Academy Cooperation Foundation of Sejong University
  • IMAGE ENCODING METHOD/DEVICE, IMAGE DECODING METHOD/DEVICE AND RECORDING MEDIUM HAVING BITSTREAM STORED THEREON
    Publication number: 20220337828
    Abstract: The present invention provides an image encoding method and an image decoding method. The image decoding method, according to the present invention, comprises the steps of: decoding information associated with a clipping range of a current block; and performing sample adaptive offset (SAO) filtering on the basis of the information associated with the clipping range, wherein the information associated with the clipping range may include information on the maximum and minimum values of a pixel value included in the current block.
    Type: Application
    Filed: July 4, 2022
    Publication date: October 20, 2022
    Applicant: INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY
    Inventors: Joo Hee MOON, Dong Jae WON, Sung Won LIM
  • AERIAL ANALYSIS OF GROUND SURFACE USING DISTANCE SENSOR OF UNMANNED AERIAL VEHICLE
    Publication number: 20220326373
    Abstract: There is provided a method for aerial analysis of a ground surface. The disclosed method includes: controlling a distance sensor of an unmanned aerial vehicle (UAV) to be successively oriented in a plurality of sensing directions towards the ground surface; and analyzing the ground surface based on distance measurement data indicative of distances measured by the distance sensor in the plurality of sensing directions, the plurality of sensing directions corresponding to respective points defining a planar trajectory, the planar trajectory including a plurality of loops winding an identical inner point.
    Type: Application
    Filed: November 26, 2021
    Publication date: October 13, 2022
    Applicant: INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY
    Inventors: Jin Woo Song, Yeong Seo Kwon, Yong Hun Kim, Do Hoang Viet
  • Techniques for indoor positioning
    Patent number: 11466989
    Abstract: A method is described in which a plurality of magnetic field norms is obtained using a plurality of magnetic field sensor units, each of the plurality of magnetic field sensor units being arranged to measure a magnetic field at a different height while being mounted to an object, each of the plurality of magnetic field norms being a norm of the magnetic field measured by a corresponding one of the plurality of magnetic field sensor units; and the plurality of magnetic field norms is matched with a magnetic field map of an indoor area including a plurality of sub-areas to estimate a location of the object as one of the plurality of sub-areas.
    Type: Grant
    Filed: November 2, 2020
    Date of Patent: October 11, 2022
    Assignee: INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY
    Inventors: Jin Woo Song, Yong Hun Kim, Eung Ju Kim, Min Jun Choi, Do Hoang Viet
  • Image processing method, and image encoding/decoding method and device which use same
    Patent number: 11463690
    Abstract: The present invention relates to an image encoding/decoding method and apparatus. The image decoding method according to the present invention may comprise acquiring transform coefficients distribution information of a neighboring block from a bitstream; direction-adaptively determining an intra prediction mode of a current block to be decoded, according to the transform coefficients distribution information of the neighboring block; and reconstructing the current block, based on the determined intra prediction mode, wherein the direction-adaptively determining includes determining similarity flag information corresponding to the neighboring block, based on the transform coefficients distribution information of the neighboring block.
    Type: Grant
    Filed: May 7, 2021
    Date of Patent: October 4, 2022
    Assignees: Electronics and Telecommunications Research Institute, CHIPS & MEDIA, INC, Industry Academy Cooperation Foundation of Sejong University
    Inventors: Jin Ho Lee, Jung Won Kang, Ha Hyun Lee, Sung Chang Lim, Hui Yong Kim, Dae Yeon Kim, Yung Lyul Lee
  • Image encoding/decoding method and device, and recording medium in which bitstream is stored
    Patent number: 11457238
    Abstract: Disclosed herein is a method of decoding an image. The method includes generating an inter prediction block by performing inter prediction with respect to a current block, generating an intra prediction block by performing intra prediction with respect to the current block, determining a first weight and a second weight, and generating a final prediction block by respectively applying the first weight and the second weight to the inter prediction block and the intra prediction block. The generating of the intra prediction block includes generating the intra prediction block using a predefined intra prediction mode.
    Type: Grant
    Filed: December 27, 2019
    Date of Patent: September 27, 2022
    Assignees: Electronics and Telecommunications Research Institute, INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY, CHIPS & MEDIA, INC, INDUSTRY-UNIVERSITY COOPERATION FOUNDATION KOREA AEROSPACE UNIVERSITY
    Inventors: Sung Chang Lim, Jung Won Kang, Ha Hyun Lee, Jin Ho Lee, Hui Yong Kim, Yung Lyul Lee, Ji Yeon Jung, Nam Uk Kim, Myung Jun Kim, Yang Woo Kim, Dae Yeon Kim, Jae Gon Kim
  • Context adaptive binary arithmetic coding method and device
    Patent number: 11457217
    Abstract: There is provided an video encoding/decoding method and apparatus. The video decoding method comprises acquiring a bitstream including a predetermined context element, performing at least one of a context model determination, a probability update, and a probability interval determination on the predetermined syntax element, and arithmetically decoding the predetermined syntax element on the basis of a result of the performance.
    Type: Grant
    Filed: June 12, 2019
    Date of Patent: September 27, 2022
    Assignees: Electronics and Telecommunications Research Institute, INDUSTRY-UNIVERSITY COOPERATION FOUNDATION KOREA AEROSPACE UNIVERSITY, INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY
    Inventors: Jin Ho Lee, Jung Won Kang, Ha Hyun Lee, Sung Chang Lim, Hui Yong Kim, Jae Gon Kim, Do Hyeon Park, Yong Uk Yoon, Yung Lyul Lee
  • METHOD AND APPARATUS FOR DERIVING INTRA PREDICTION MODE
    Publication number: 20220303528
    Abstract: Disclosed herein are a decoding method and apparatus and an encoding method and apparatus for deriving an intra-prediction mode. An intra-prediction mode may be derived using a method for deriving an intra-prediction mode based on a neighbor block of the target block, a method for deriving an intra-prediction mode using signaling of the intra-prediction mode of the target block, or a method for deriving an adaptive intra-prediction mode based on the type of a target slice. An MPM list may be used to derive the intra-prediction mode, and a temporal neighbor block or the like may be used to configure the MPM list.
    Type: Application
    Filed: May 9, 2022
    Publication date: September 22, 2022
    Applicants: Electronics and Telecommunications Research Institute, Industry-University Cooperation Foundation Korea Aerospace University, Industry Academy Cooperation Foundation of Sejong University
    Inventors: Jin-Ho LEE, Jae-Gon KIM, Jung-Won KANG, Do-Hyeon PARK, Yung-Lyul LEE, Ha-Hyun LEE, Sung-Chang LIM, Hui-Yong KIM, Ji-Hoon DO, Yong-Uk YOON
  • Method of identification and analysis for materials
    Patent number: 11449708
    Abstract: A method of identifying and analyzing materials includes selecting at least two elements, collecting data of a plurality of compounds analyzed to be producible by the at least two elements, preparing image or spectrum-type analysis data for each of the plurality of collected compounds, selecting binary or higher-order compounds from among the plurality of compounds to mix the selected compounds at a predetermined mixing ratio, and generating training data including resultant data obtained by combining and processing the image or spectrum-type analysis data according to the predetermined mixing ratio, performing machine learning using the training data, and identifying and/or analyzing image or spectrum-type analysis data obtained from an actual material, using a model obtained through the machine learning.
    Type: Grant
    Filed: December 6, 2019
    Date of Patent: September 20, 2022
    Assignee: Industry Academy Cooperation Foundation of Sejong University
    Inventors: Kee-sun Sohn, Jin-woong Lee
  • Method and system for verifying integrity of GPS position information
    Patent number: 11442180
    Abstract: A method and a system for verifying integrity of GPS position information according to a disclosed embodiment is a method performed in an unmanned moving object including one or more processors and a memory for storing one or more programs executed by the one or more processors. The method includes an operation of performing an authentication process for a connected base station, by the unmanned moving object, an operation of measuring a position of the unmanned moving object by performing wireless communication with a plurality of authenticated base stations, and an operation of verifying the GPS position information by comparing a value of the measured position with a position value of the GPS position information received from a satellite.
    Type: Grant
    Filed: November 29, 2019
    Date of Patent: September 13, 2022
    Assignee: INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY
    Inventors: Ji Sun Shin, Byung Woon Park, Shin Cheol Lee, Ye Bin Lee
  • METHOD AND APPARATUS FOR ENCODING/DECODING IMAGE SIGNAL
    Publication number: 20220272361
    Abstract: A method for decoding an image signal according to the present invention may comprise the steps of: determining whether there is a brightness change between a current image including a current block and a reference image of the current image; if it is determined that there is a brightness change between the current image and the reference image, determining weight prediction parameter candidates for the current block; determining a weight prediction parameter for the current block on the basis of index information which specifies any one of the weight prediction parameter candidates; and performing a prediction on the current block on the basis of the weight prediction parameter.
    Type: Application
    Filed: May 13, 2022
    Publication date: August 25, 2022
    Applicant: Industry Academy Cooperation Foundation of Sejong University
    Inventors: Joo Hee MOON, Sung Won LIM, Dong Jae WON
  • VIDEO SIGNAL DECODING/ENCODING METHOD AND APPARATUS THEREOF
    Publication number: 20220272390
    Abstract: There is provided a video signal decoding method. The method comprises decoding block division information of a current block, dividing the current block into a plurality of sub blocks based on the block division information, and decoding the sub blocks.
    Type: Application
    Filed: April 8, 2022
    Publication date: August 25, 2022
    Applicant: INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY
    Inventors: Yung Lyul LEE, Nam Uk KIM, Kyung Hwan KO, Young Hwan YOO
  • Method and apparatus for encoding/decoding image
    Patent number: 11425426
    Abstract: The present invention relates to an image encoding/decoding method and device, and the image encoding method or device according to an embodiment of the present invention may encode a position of a reference coefficient within a current transform block to be encoded, and encoding skip region information of a skip region selected on the basis of the position of the reference coefficient. The skip region information may represent whether or not coefficients within the skip region have an identical coefficient value.
    Type: Grant
    Filed: January 31, 2018
    Date of Patent: August 23, 2022
    Assignee: INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY
    Inventors: Joo Hee Moon, Jae Min Ha, Dong Jae Won, Sung Won Lim
  • Image encoding method/device, image decoding method/device and recording medium having bitstream stored thereon
    Patent number: 11412218
    Abstract: The present invention provides an image encoding method and an image decoding method. The image decoding method, according to the present invention, comprises the steps of: decoding information associated with a clipping range of a current block; and performing sample adaptive offset (SAO) filtering on the basis of the information associated with the clipping range, wherein the information associated with the clipping range may include information on the maximum and minimum values of a pixel value included in the current block.
    Type: Grant
    Filed: January 16, 2018
    Date of Patent: August 9, 2022
    Assignee: INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY
    Inventors: Joo Hee Moon, Dong Jae Won, Sung Won Lim
  • METHOD AND APPARATUS OF AUTOMATIC OPTICAL INSPECTION USING SCANNING HOLOGRAPHY
    Publication number: 20220221822
    Abstract: Disclosed are a method and apparatus of automatic optical inspection using scanning holography. The apparatus for automatic optical inspection using scanning holography includes: a hologram capturer that takes a hologram of an object existing on an objective plate using a scanning hologram camera; a depth position/rotation angle extractor that extracts a depth position and a rotation angle about an objective surface of the objective plate on the basis of the hologram or the detected monitoring-light; a rotated coordinate system generator that generates a rotated coordinate system corresponding to the objective surface using the depth position and the rotation angle; and a hologram restorer that obtains an image of the object by restoring the hologram in a plane formed in a depth direction of the rotated coordinate system.
    Type: Application
    Filed: June 3, 2020
    Publication date: July 14, 2022
    Applicant: INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY
    Inventor: Tae Geun KIM
  • Method and apparatus for encoding/decoding image signal
    Patent number: 11363280
    Abstract: A method for decoding an image signal according to the present invention may comprise the steps of: obtaining a first prediction sample of a current block by performing inter prediction on the current block; determining one or more weight prediction parameter candidates for the current block; determining a weight prediction parameter of the current block from the one or more weight prediction parameter candidates; and obtaining a second prediction sample of the current block by applying the weight prediction parameter to the first prediction sample. Herein, a number of the one or more weight prediction parameter candidates is variably determined based on a size of the current block.
    Type: Grant
    Filed: January 27, 2021
    Date of Patent: June 14, 2022
    Assignee: INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY
    Inventors: Joo Hee Moon, Sung Won Lim, Dong Jae Won
  • METHOD AND APPARATUS FOR ENCODING/DECODING AN IMAGE SIGNAL
    Publication number: 20220159238
    Abstract: Disclosed are an image encoding/decoding method and apparatus. The image decoding method includes decoding coding mode information of a current coding block, dividing the current coding block into at least one prediction block, and generating prediction samples of the at least one prediction block on the basis of the decoded coding mode, in which the coding mode information is information indicating any one mode among intra mode, inter mode, and hybrid mode.
    Type: Application
    Filed: January 21, 2022
    Publication date: May 19, 2022
    Applicant: INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY
    Inventors: Joo Hee MOON, Dong Jae WON, Sung Won LIM
  • METHOD AND APPARATUS FOR ENCODING/DECODING IMAGE USING QUANTIZATION PARAMETER, AND RECORDING MEDIUM STORING BITSTREAM
    Publication number: 20220150500
    Abstract: There is provided an image encoding/decoding method and apparatus. The image decoding method comprises decoding size information of a quantization group from a bitstream, acquiring a delta quantization parameter of a current block on the basis of the size information of the quantization group, and deriving a quantization parameter for the current block on the basis of the delta quantization parameter.
    Type: Application
    Filed: January 31, 2022
    Publication date: May 12, 2022
    Applicants: Electronics and Telecommunications Research Institute, INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY, INDUSTRY-UNIVERSITY COOPERATION FOUNDATION KOREA AEROSPACE UNIVERSITY
    Inventors: Sung Chang LIM, Jung Won KANG, Ha Hyun LEE, Jin Ho LEE, Hui Yong KIM, Yung Lyul LEE, Myung Jun KIM, Nam Uk KIM, Ji Youn JUNG, Yang Woo KIM, Jae Gon KIM
  • INTRA PREDICTION-BASED VIDEO SIGNAL PROCESSING METHOD AND APPARATUS
    Publication number: 20220150480
    Abstract: According to the present invention, there is provided a method of decoding a video signal, the method including: determining an intra prediction mode of a current block; applying a filter to a first reference sample adjacent to the current block; obtaining a first prediction sample of the current block on the basis of the intra prediction mode and a second reference sample obtained by applying the filter; and obtaining a second prediction sample of the current block using the first prediction sample and the first reference sample.
    Type: Application
    Filed: January 24, 2022
    Publication date: May 12, 2022
    Applicant: Industry Academy Cooperation Foundation of Sejong University
    Inventors: Yung-Lyul LEE, Nam Uk KIM, Jun Woo CHOI
  • METHOD AND APPARATUS FOR IMAGE ENCODING/DECODING
    Publication number: 20220116588
    Abstract: A method and an apparatus for image encoding/decoding, according to the present invention, may generate a candidate list of a current block and perform inter-prediction of the current block by using any one of a plurality of candidates belonging to the candidate list. Here, the plurality of candidates comprise at least one from among a spatial candidate, a temporal candidate, and a restoration information-based candidate, and the restoration information-based candidate may be added from a buffer which stores motion information decoded prior to the current block.
    Type: Application
    Filed: January 6, 2020
    Publication date: April 14, 2022
    Applicant: Industry Academy Cooperation Foundation of Sejong University
    Inventors: Joo Hee MOON, Dong Jae WON, Jae Min HA
  • VIDEO ENCODING/DECODING METHOD, APPARATUS, AND RECORDING MEDIUM HAVING BITSTREAM STORED THEREON
    Publication number: 20220109846
    Abstract: An image encoding/decoding method is provided. An image decoding method of the present invention may comprise deriving an intra-prediction mode of a current luma block, deriving an intra-prediction mode of a current chroma block based on the intra-prediction mode of the current luma block, generating a prediction block of the current chroma block based on the intra-prediction mode of the current chroma block, and the deriving of an intra-prediction mode of a current chroma block may comprise determining whether or not CCLM (Cross-Component Linear Mode) can be performed for the current chroma block.
    Type: Application
    Filed: December 27, 2019
    Publication date: April 7, 2022
    Applicants: Electronics and Telecommunications Research Institute, INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY, CHIPS&MEDIA, INC, INDUSTRY-UNIVERSITY COOPERATION FOUNDATION KOREA AEROSPACE UNIVERSITY
    Inventors: Sung Chang LIM, Jung Won KANG, Ha Hyun LEE, Jin Ho LEE, Hui Yong KIM, Yung Lyul LEE, Ji Yeon JUNG, Nam Uk KIM, Myung Jun KIM, Yang Woo KIM, Dae Yeon KIM, Jae Gon KIM, Do Hyeon PARK