Patents by Inventor Nam Uk Kim
Nam Uk Kim 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).
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Publication number: 20240357085Abstract: An image encoding/decoding method is provided. An image decoding method of the present invention may comprise restoring an intra-prediction mode of a current chroma block, deriving at least one representative value based on a neighboring sample of the current chroma block and a neighboring sample of a corresponding luma block corresponding to the current chroma block in case the intra-prediction mode is a CCLM (Cross-Component Linear Model) mode, deriving a parameter of CCLM by using the at least one representative value, and generating a prediction block of the current chroma block by using the parameter of CCLM.Type: ApplicationFiled: June 27, 2024Publication date: October 24, 2024Inventors: Sung Chang LIM, Jung Won KANG, Ha Hyun LEE, Jin Ho LEE, Hui Yong KIM, Yung Lyul LEE, Myung Jun KIM, Nam Uk KIM, Yang Woo KIM, Ji Yeon JUNG, Jae Gon KIM
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Publication number: 20240333923Abstract: An image decoding method using a neural network-based in-loop filter may comprise obtaining a first image feature from an input image, obtaining a block information feature of the input image from block information of the input image, obtaining a second image feature by removing noise and distortion of the first image feature based on the block information feature, and reconstructing the input image based on the second image feature. The block information may comprise at least one of a block boundary map indicating a block partition structure of the input image or a block distribution map indicating encoding information of the input image.Type: ApplicationFiled: July 7, 2022Publication date: October 3, 2024Inventors: Hyun Gyu KIM, Dae Yeon KIM, Yung-Lyul LEE, Yang Woo KIM, Myung Jun KIM, Nam Uk KIM
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Publication number: 20240323449Abstract: An image decoding is performed by steps including: determining whether or not to perform filtering on a boundary of a current block; determining a filtering strength on the boundary of the current block, and a number of samples used in filtering; and performing filtering on the boundary of the current block on the basis of the filtering strength and the number of samples used in filtering, where the number of samples used in filtering is determined on the basis of a size of the current block.Type: ApplicationFiled: May 28, 2024Publication date: September 26, 2024Applicants: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, CHIPS&MEDIA, INC, INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY, INDUSTRY-UNIVERSITY COOPERATION FOUNDATION KOREA AEROSPACE UNIVERSITYInventors: Sung Chang LIM, Jung Won KANG, Ha Hyun LEE, Jin Ho LEE, Hui Yong KIM, Dae Yeon KIM, Wook Je JEONG, Dong Jin PARK, Min Yong JEON, Yung Lyul LEE, Nam Uk KIM, Myung Jun KIM, Ji Youn JUNG, Jae Gon KIM
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Publication number: 20240314316Abstract: 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: ApplicationFiled: May 24, 2024Publication date: September 19, 2024Inventors: 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
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Publication number: 20240283923Abstract: According to the present invention, provided is a method of processing a video signal, the method including: obtaining a transform coefficient of a current block from a bitstream according to a predetermined scanning order; determining an intra prediction mode of the current block on the basis of the transform coefficient; and performing intra prediction on the current block using the intra prediction mode and a neighboring sample adjacent to the current block.Type: ApplicationFiled: April 29, 2024Publication date: August 22, 2024Applicant: Industry Academy Cooperation Foundation of Sejong UniversityInventors: Yung Lyul LEE, Nam Uk KIM
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Patent number: 12069300Abstract: 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: GrantFiled: September 15, 2023Date of Patent: August 20, 2024Assignees: Electronics and Telecommunications Research Institute, INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY, CHIPS&MEDIA, INC, INDUSTRY-UNIVERSITY COOPERATION FOUNDATION KOREA AEROSPACE UNIVERSITYInventors: 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
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Patent number: 12058311Abstract: An image encoding/decoding method is provided. An image decoding method of the present invention may comprise restoring an intra-prediction mode of a current chroma block, deriving at least one representative value based on a neighboring sample of the current chroma block and a neighboring sample of a corresponding luma block corresponding to the current chroma block in case the intra-prediction mode is a CCLM (Cross-Component Linear Model) mode, deriving a parameter of CCLM by using the at least one representative value, and generating a prediction block of the current chroma block by using the parameter of CCLM.Type: GrantFiled: December 27, 2019Date of Patent: August 6, 2024Assignees: Electronics and Telecommunications Research Institute, INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY, INDUSTRY-UNIVERSITY COOPERATION FOUNDATION KOREA AEROSPACE UNIVERSITYInventors: Sung Chang Lim, Jung Won Kang, Ha Hyun Lee, Jin Ho Lee, Hui Yong Kim, Yung Lyul Lee, Myung Jun Kim, Nam Uk Kim, Yang Woo Kim, Ji Yeon Jung, Jae Gon Kim
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Patent number: 12034977Abstract: An image decoding is performed by steps including: determining whether or not to perform filtering on a boundary of a current block; determining a filtering strength on the boundary of the current block, and a number of samples used in filtering; and performing filtering on the boundary of the current block on the basis of the filtering strength and the number of samples used in filtering, where the number of samples used in filtering is determined on the basis of a size of the current block.Type: GrantFiled: June 28, 2019Date of Patent: July 9, 2024Assignees: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, CHIPS & MEDIA, INC, INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY, INDUSTRY-UNIVERSITY COOPERATION FOUNDATION KOREA AEROSPACE UNIVERSITYInventors: Sung Chang Lim, Jung Won Kang, Ha Hyun Lee, Jin Ho Lee, Hui Yong Kim, Dae Yeon Kim, Wook Je Jeong, Dong Jin Park, Min Yong Jeon, Yung Lyul Lee, Nam Uk Kim, Myung Jun Kim, Ji Youn Jung, Jae Gon Kim
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Patent number: 12034930Abstract: 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: GrantFiled: January 31, 2022Date of Patent: July 9, 2024Assignees: Electronics and Telecommunications Research Institute, INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY, INDUSTRY-UNIVERSITY COOPERATION FOUNDATION KOREA AEROSPACE UNIVERSITYInventors: 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
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Publication number: 20240223770Abstract: Disclosed herein are a decoding method and apparatus and an encoding method and apparatus that perform inter-prediction using a motion vector predictor. For a candidate block in a col picture, a scaled motion vector is generated based on a motion vector of the candidate block. When the scaled motion vector indicates a target block, a motion vector predictor of the target block is generated based on the motion vector of the candidate block. The motion vector predictor is used to derive the motion vector of the target block in a specific inter-prediction mode such as a merge mode and an AMVP mode.Type: ApplicationFiled: February 21, 2024Publication date: July 4, 2024Applicants: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, INDUSTRY-ACADEMIA COOPERATION GROUP OF SEJONG UNIVERSITY, INDUSTRY-UNIVERSITY COOPERATION FOUNDATION KOREA AEROSPACE UNIVERSITYInventors: Sung-Chang LIM, Jung-Won KANG, Hyunsuk KO, Jin-HO LEE, Ha-Hyun LEE, Dong-San JUN, Hui-Yong KIM, Yung-Lyul LEE, Nam-UK KIM, Jae-Gon KIM
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Patent number: 12015769Abstract: A method of processing a video signal includes obtaining a transform coefficient of a current block from a bitstream according to a predetermined scanning order, determining an intra prediction mode of the current block on the basis of the transform coefficient, and performing intra prediction on the current block using the intra prediction mode and a neighboring sample adjacent to the current block.Type: GrantFiled: March 31, 2023Date of Patent: June 18, 2024Assignee: Industry Academy Cooperation Foundation of Sejong UniversityInventors: Yung Lyul Lee, Nam Uk Kim
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Publication number: 20240179320Abstract: 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: ApplicationFiled: February 2, 2024Publication date: May 30, 2024Inventors: 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
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Patent number: 11943447Abstract: Disclosed herein are a decoding method and apparatus and an encoding method and apparatus that perform inter-prediction using a motion vector predictor. For a candidate block in a col picture, a scaled motion vector is generated based on a motion vector of the candidate block. When the scaled motion vector indicates a target block, a motion vector predictor of the target block is generated based on the motion vector of the candidate block. The motion vector predictor is used to derive the motion vector of the target block in a specific inter-prediction mode such as a merge mode and an AMVP mode.Type: GrantFiled: July 13, 2022Date of Patent: March 26, 2024Assignees: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, INDUSTRY-ACADEMIA COOPERATION GROUP OF SEJONG UNIVERSITY, INDUSTRY-UNIVERSITY COOPERATION FOUNDATION KOREA AEROSPACE UNIVERSITYInventors: Sung-Chang Lim, Jung-Won Kang, Hyunsuk Ko, Jin-Ho Lee, Ha-Hyun Lee, Dong-San Jun, Hui-Yong Kim, Yung-Lyul Lee, Nam-Uk Kim, Jae-Gon Kim
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Patent number: 11930179Abstract: 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: GrantFiled: December 27, 2019Date of Patent: March 12, 2024Assignees: Electronics and Telecommunications Research Institute, INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNI, CHIPS & MEDIA, INC, INDUSTRY-UNIVERSITY COOPERATION FOUNDATION KOREA AEROSPACE UNIVERSITYInventors: 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
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Publication number: 20240015323Abstract: 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: ApplicationFiled: September 15, 2023Publication date: January 11, 2024Applicants: Electronics and Telecommunications Research Institute, INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY, CHIPS&MEDIA, INC, INDUSTRY-UNIVERSITY COOPERATION FOUNDATION KOREA AEROSPACE UNIVERSITYInventors: 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
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Publication number: 20230379466Abstract: The present invention relates to a method and apparatus for encoding and decoding a video image based on transform. The method for decoding a video includes: determining a transform mode of a current block; inverse-transforming residual data of the current block according to the transform mode of the current block; and rearranging the inverse-transformed residual data of the current block according to the transform mode of the current block, wherein the transform mode includes at least one of SDST (Shuffling Discrete Sine Transform), SDCT (Shuffling Discrete cosine Transform), DST (Discrete Sine Transform) or DCT (Discrete Cosine Transform).Type: ApplicationFiled: July 26, 2023Publication date: November 23, 2023Applicants: Electronics and Telecommunications Research Institute, Industry Academy Cooperation Foundation of Sejong UniversityInventors: Sung Chang LIM, Jung Won KANG, Hyun Suk KO, Jin Ho LEE, Ha Hyun LEE, Dong San JUN, Seung Hyun CHO, Hui Yong KIM, Jin Soo CHOI, Yung Lyul LEE, Nam Uk KIM, Jun Woo CHOI
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Patent number: 11765386Abstract: 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: GrantFiled: August 18, 2022Date of Patent: September 19, 2023Assignees: Electronics and Telecommunications Research Institute, INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITYInventors: 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
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Patent number: 11758136Abstract: The present invention relates to a method and apparatus for encoding and decoding a video image based on transform. The method for decoding a video includes: determining a transform mode of a current block; inverse-transforming residual data of the current block according to the transform mode of the current block; and rearranging the inverse-transformed residual data of the current block according to the transform mode of the current block, wherein the transform mode includes at least one of SDST (Shuffling Discrete Sine Transform), SDCT (Shuffling Discrete cosine Transform), DST (Discrete Sine Transform) or DCT (Discrete Cosine Transform).Type: GrantFiled: June 23, 2017Date of Patent: September 12, 2023Assignees: Electronics and Telecommunications Research Institute, Industry Academy Cooperation Foundation of Sejong UniversityInventors: Sung Chang Lim, Jung Won Kang, Hyun Suk Ko, Jin Ho Lee, Ha Hyun Lee, Dong San Jun, Seung Hyun Cho, Hui Yong Kim, Jin Soo Choi, Yung Lyul Lee, Nam Uk Kim, Jun Woo Choi
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Publication number: 20230239468Abstract: According to the present invention, provided is a method of processing a video signal, the method including: obtaining a transform coefficient of a current block from a bitstream according to a predetermined scanning order; determining an intra prediction mode of the current block on the basis of the transform coefficient; and performing intra prediction on the current block using the intra prediction mode and a neighboring sample adjacent to the current block.Type: ApplicationFiled: March 31, 2023Publication date: July 27, 2023Applicant: Industry Academy Cooperation Foundation of Sejong UniversityInventors: Yung Lyul LEE, Nam Uk KIM
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Patent number: 11647183Abstract: According to the present invention, provided is a method of processing a video signal, the method including: obtaining a transform coefficient of a current block from a bitstream according to a predetermined scanning order; determining an intra prediction mode of the current block on the basis of the transform coefficient; and performing intra prediction on the current block using the intra prediction mode and a neighboring sample adjacent to the current block.Type: GrantFiled: November 23, 2021Date of Patent: May 9, 2023Assignee: Industry Academy Cooperation Foundation of Sejong UniversityInventors: Yung Lyul Lee, Nam Uk Kim