Patents Assigned to Industry Academy Cooperation Foundation of Sejong University
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Publication number: 20210152836Abstract: 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: ApplicationFiled: January 27, 2021Publication date: May 20, 2021Applicant: Industry Academy Cooperation Foundation of Sejong UniversityInventors: Joo Hee MOON, Sung Won LIM, Dong Jae WON
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Publication number: 20210152814Abstract: 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: ApplicationFiled: January 26, 2021Publication date: May 20, 2021Applicant: INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITYInventors: Joo Hee MOON, Dong Jae WON, Sung Won LIM
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Publication number: 20210140770Abstract: 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: ApplicationFiled: November 2, 2020Publication date: May 13, 2021Applicant: INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITYInventors: Jin Woo Song, Yong Hun Kim, Eung Ju Kim, Min Jun Choi, Do Hoang Viet
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Patent number: 10979709Abstract: 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: determining a transformation performing region; segmenting the determined transformation performing region into at least one sub-transform block by using at least one of quadtree segmentation and binary tree segmentation; and performing inverse transformation on the at least one sub-transform block.Type: GrantFiled: October 12, 2017Date of Patent: April 13, 2021Assignee: Industry Academy Cooperation Foundation of Sejong UniversityInventors: Joo Hee Moon, Dong Jae Won, Sung Won Lim
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Patent number: 10951884Abstract: 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: GrantFiled: January 16, 2018Date of Patent: March 16, 2021Assignee: Industry Academy Cooperation Foundation of Sejong UniversityInventors: Joo Hee Moon, Dong Jae Won, Sung Won Lim
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Patent number: 10939125Abstract: 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: GrantFiled: April 28, 2017Date of Patent: March 2, 2021Assignee: Industry Academy Cooperation Foundation of Sejong UniversityInventors: Joo Hee Moon, Sung Won Lim, Dong Jae Won
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Publication number: 20210058646Abstract: According to the present invention, there is provided a video signal processing method of dividing an input image on a per-block basis for encoding, the method including: determining, at a division determination step, whether to divide a current block; dividing, at a block division step, the current block into multiple sub blocks on the basis of the determination; generating block division information on division of the current block; and encoding, at an encoding step, the block division information, the current block, or the sub blocks. Examples of division of the block according to the present invention include division using N-ary tree structures, such as the quad tree structure, the binary tree structure, and/or the triple tree structure.Type: ApplicationFiled: October 15, 2020Publication date: February 25, 2021Applicant: INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITYInventors: Yung Lyul LEE, Nam Uk KIM, Kyung Hwan KO, Young Hwan YOO
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Patent number: 10909769Abstract: The mixed reality based 3D sketching device includes a processor; and a memory connected to the processor. The memory stores program commands that are executable by the processor to periodically tracks a marker pen photographed through a camera, to determine whether to remove a third point using a distance between a first point corresponding to a reference point, among points that are sequentially tracked, and a second point at a current time, a preset constant, and an angle between the first point, the second point, and the previously identified third point, to search an object model corresponding to a 3D sketch that has been corrected, after correction is completed depending on the removal of the third point, and to display the searched object model on a screen.Type: GrantFiled: March 6, 2020Date of Patent: February 2, 2021Assignee: INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITYInventors: Soo Mi Choi, Jun Han Kim, Je Wan Han
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Publication number: 20210021847Abstract: A method and an apparatus for encoding/decoding an image according to the present invention may determine a reference area that is a pre-reconstructed area spatially adjacent to a current block on the basis of reference information for specifying the position of a reference area used for predicting a current block and may predict the current block on the basis of the reference area.Type: ApplicationFiled: March 29, 2019Publication date: January 21, 2021Applicant: INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITYInventors: Joo Hee MOON, Dong Jae WON, Jae Min HA, Sung Won LIM
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Publication number: 20200413064Abstract: A method for encoding image signal, according to the present invention, can: encode a partial block coefficient flag indicating whether a coefficient of a current partial block is a non-zero coefficient; encode a first flag indicating whether an absolute value of the coefficient is greater than 1, encode a second flag indicating whether the absolute value of the coefficient is greater than 2; encode the residual coefficients, which have not been encoded, on the basis of the first flag or the second flag in the current partial block; and encode a code for the coefficient of the current partial block.Type: ApplicationFiled: September 11, 2020Publication date: December 31, 2020Applicant: Industry Academy Cooperation Foundation of Sejong UniversityInventors: Joo Hee MOON, Dong Jae WON, Sung Won LIM
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Publication number: 20200413057Abstract: An image signal decoding method according to the present invention comprises the steps of: decoding information indicating whether a current block is encoded using a multi-mode intra prediction; when it is determined that the current block is encoded in the multi-mode intra prediction, dividing the current block into a plurality of partial blocks; and obtaining an intra prediction mode of each of the plurality of partial blocks.Type: ApplicationFiled: September 10, 2020Publication date: December 31, 2020Applicant: Industry Academy Cooperation Foundation of Sejong UniversityInventors: Joo Hee MOON, Sung Won LIM, Dong Jae WON
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Publication number: 20200413065Abstract: A method for encoding image signal, according to the present invention, can: encode a partial block coefficient flag indicating whether a coefficient of a current partial block is a non-zero coefficient; encode a first flag indicating whether an absolute value of the coefficient is greater than 1, encode a second flag indicating whether the absolute value of the coefficient is greater than 2; encode the residual coefficients, which have not been encoded, on the basis of the first flag or the second flag in the current partial block; and encode a code for the coefficient of the current partial block.Type: ApplicationFiled: September 11, 2020Publication date: December 31, 2020Applicant: Industry Academy Cooperation Foundation of Sejong UniversityInventors: Joo Hee MOON, Dong Jae WON, Sung Won LIM
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Publication number: 20200413058Abstract: An image signal decoding method according to the present invention comprises the steps of: decoding information indicating whether a current block is encoded using a multi-mode intra prediction; when it is determined that the current block is encoded in the multi-mode intra prediction, dividing the current block into a plurality of partial blocks; and obtaining an intra prediction mode of each of the plurality of partial blocks.Type: ApplicationFiled: September 10, 2020Publication date: December 31, 2020Applicant: Industry Academy Cooperation Foundation of Sejong UniversityInventors: Joo Hee MOON, Sung Won LIM, Dong Jae WON
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Publication number: 20200344471Abstract: 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: ApplicationFiled: July 14, 2020Publication date: October 29, 2020Applicant: Industry Academy Cooperation Foundation of Sejong UniversityInventors: Yung-Lyul LEE, Nam Uk KIM, Jun Woo CHOI
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Patent number: 10805607Abstract: An image signal decoding method according to the present invention comprises the steps of: decoding information indicating whether a current block is encoded using a multi-mode intra prediction; when it is determined that the current block is encoded in the multi-mode intra prediction, dividing the current block into a plurality of partial blocks; and obtaining an intra prediction mode of each of the plurality of partial blocks.Type: GrantFiled: April 28, 2017Date of Patent: October 13, 2020Assignee: Industry Academy Cooperation Foundation of Sejong UniversityInventors: Joo Hee Moon, Sung Won Lim, Dong Jae Won
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Publication number: 20200304810Abstract: 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: ApplicationFiled: April 28, 2017Publication date: September 24, 2020Applicant: Industry Academy Cooperation Foundation of Sejong UniversityInventors: Joo Hee MOON, Sung Won LIM, Dong Jae WON
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Publication number: 20200296403Abstract: The present invention relates to a video signal decoding method and apparatus therefor. A decoding method according to an embodiment of the present invention comprises: setting a structure of a coding block constituting a current image; setting a structure of transform blocks corresponding to the coding block; and generating a prediction signal by using the transform blocks, and wherein the coding block includes any one or more blocks of a square block and a non-square block.Type: ApplicationFiled: May 26, 2017Publication date: September 17, 2020Applicant: INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITYInventors: Jong-Ki HAN, Jae-Yung LEE
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Publication number: 20200271792Abstract: The present invention provides a method of performing a position measurement on the basis of a signal from a global navigation satellite system (GNSS). The method includes: receiving initial position information; estimating an initial value of a multipath error through a measurement of the GNSS signal on the basis of the received initial position information; estimating a multipath error from the initial value of the multipath error on the basis of a change in the measurement; removing the estimated multipath error from the measurement of the GNSS signal; and performing the position measurement on the basis of the GNSS measurement from which the multipath error is removed.Type: ApplicationFiled: December 9, 2019Publication date: August 27, 2020Applicants: Electronics and Telecommunications Research Institute, INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITYInventors: Yoo La HWANG, Jae Young AHN, Byoung Sun LEE, Ji Hun CHA, Byung Woon PARK, Yong Jun LEE, Cheol Soon LIM
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Patent number: 10757406Abstract: 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: GrantFiled: March 27, 2017Date of Patent: August 25, 2020Assignee: Industry Academy Cooperation Foundation of Sejong UniversityInventors: Yung-Lyul Lee, Nam Uk Kim, Jun Woo Choi
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Publication number: 20200260089Abstract: A method for encoding image signal, according to the present invention, can: encode a partial block coefficient flag indicating whether a coefficient of a current partial block is a non-zero coefficient; encode a first flag indicating whether an absolute value of the coefficient is greater than 1, encode a second flag indicating whether the absolute value of the coefficient is greater than 2; encode the residual coefficients, which have not been encoded, on the basis of the first flag or the second flag in the current partial block; and encode a code for the coefficient of the current partial block.Type: ApplicationFiled: April 28, 2020Publication date: August 13, 2020Applicant: Industry Academy Cooperation Foundation of Sejong UniversityInventors: Joo Hee MOON, Dong Jae WON, Sung Won LIM