-
公开(公告)号：US20220417551A1
公开(公告)日：2022-12-29
申请号：US17903494
申请日：2022-09-06
Inventor： Sung Chang LIM , Hui Yong KIM , Jin Ho LEE , Jin Soo CHOI , Jin Woong KIM
IPC: H04N19/52
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.
-
公开(公告)号：US20220385887A1
公开(公告)日：2022-12-01
申请号：US17886154
申请日：2022-08-11
Inventor： Dong San JUN , Jung Won KANG , Sung Chang LIM , Hyun Suk KO , Jin Ho LEE , Hui Yong KIM , Jin Soo CHOI
IPC: H04N19/103 , H04N19/11 , H04N19/463 , H04N19/176 , H04N19/146 , H04N19/44 , H04N19/167 , H04N19/159 , H04N19/91
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.
-
公开(公告)号：US20220295065A1
公开(公告)日：2022-09-15
申请号：US17828688
申请日：2022-05-31
Applicant: Electronics and Telecommunications Research Institute , UNIVERSITY-INDUSTRY COOPERATION GROUP OF KYUNG HEE UNIVERSITY
Inventor： Hui Yong KIM , Sung Chang LIM , Jin Ho LEE , Jin Soo CHOI , Jin Woong KIM , Gwang Hoon PARK , Kyung Yong KIM
IPC: H04N19/129 , H04N19/176 , H04N19/70 , H04N19/122 , H04N19/159 , H04N19/119 , H04N19/136 , H04N19/61 , H04N19/593 , H04N19/625 , H04N19/124 , H04N19/157 , H04N19/44
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.
-
公开(公告)号：US20220232228A1
公开(公告)日：2022-07-21
申请号：US17717366
申请日：2022-04-11
Inventor： 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
IPC: H04N19/159 , H04N19/513 , H04N19/463 , H04N19/105 , H04N19/13 , H04N19/126 , H04N19/176 , H04N19/593
Abstract: The present invention relates to a method for encoding/decoding a video. To this end, the method for decoding a video may include: deriving a spatial merge candidate from at least one of spatial candidate blocks of a current block, deriving a temporal merge candidate from a co-located block of the current block, and generating a prediction block of the current block based on at least one of the derived spatial merge candidate and the derived temporal merge candidate, wherein a reference picture for the temporal merge candidate is selected based on a reference picture list of a current picture including the current block and a reference picture list of a co-located picture including the co-located block.
-
公开(公告)号：US20220224893A1
公开(公告)日：2022-07-14
申请号：US17709540
申请日：2022-03-31
Applicant: Electronics and Telecommunications Research Institute , University-Industry Cooperation Group of Kyung Hee University
Inventor： Hui Yong KIM , Gwang Hoon PARK , Kyung Yong KIM , Sung Chang LIM , Jin Ho LEE , Jin Soo CHOI , Jin Woong KIM
IPC: H04N19/11 , H04N19/176 , H04N19/129 , H04N19/186 , H04N19/159 , H04N19/12 , H04N19/18
Abstract: The present invention relates to an encoding method and decoding method, and a device using the same. The encoding method according to the present invention comprises the steps of: specifying an intra prediction mode for a current block; and scanning a residual signal by intra prediction of the current block, wherein the step of scanning the residual signal can determine a scanning type for a luminance signal and a chroma signal of the current block according to an intra prediction mode for a luminance sample of the current block.
-
Patent Agency Ranking
公开(公告)号：US20220159271A1
公开(公告)日：2022-05-19
申请号：US17591830
申请日：2022-02-03
Inventor： Dong San JUN , Jin Ho LEE , Jung Won KANG , Hyun Suk KO , Sung Chang LIM , Ha Hyun LEE , Seung Hyun CHO , Hui Yong KIM , Jin Soo CHOI
IPC: H04N19/159 , H04N19/105 , H04N19/593 , H04N19/13 , H04N19/126 , H04N19/176 , H04N19/50
Abstract: An image encoding/decoding method and apparatus for performing intra prediction are provided. An image decoding method of the present invention comprises deriving an intra prediction mode for a current block, selecting at least one reconstructed sample line neighboring to the current block, constructing a reference sample using at least one reconstructed sample included in the at least one reconstructed sample line, and performing intra prediction for the current block based on the intra prediction mode and the reference sample.
-
公开(公告)号：US20220159244A1
公开(公告)日：2022-05-19
申请号：US17591089
申请日：2022-02-02
Applicant: Electronics and Telecommunications Research Institute , University-Industry Cooperation Group of Kyung Hee University
Inventor： Hui Yong KIM , Gwang Hoon PARK , Kyung Yong KIM , Sang Min KIM , Sung Chang LIM , Jin Ho LEE , Jin Soo CHOI , Jin Woong KIM
IPC: H04N19/105 , H04N19/136 , H04N19/176 , H04N19/503 , H04N19/159 , H04N19/513 , H04N19/139 , H04N19/103 , H04N19/52
Abstract: The present invention relates to a method and apparatus for setting a reference picture index of a temporal merging candidate. An inter-picture prediction method using a temporal merging candidate can include the steps of: determining a reference picture index for a current block; and inducing a temporal merging candidate block of the current block and calculating a temporal merging candidate from the temporal merging candidate block, wherein the reference picture index of the temporal merging candidate can be calculated regardless of whether a block other than the current block is decoded. Accordingly, a video processing speed can be increased and video processing complexity can be reduced.
-
公开(公告)号：US20220150499A1
公开(公告)日：2022-05-12
申请号：US17580810
申请日：2022-01-21
Inventor： Sung Chang LIM , Hui Yong KIM , Se Yoon JEONG , Suk Hee CHO , Jong Ho KIM , Ha Hyun LEE , Jin Ho LEE , Jin Soo CHOI , Jin Woong KIM , Chie Teuk AHN
IPC: H04N19/124 , H04N19/196 , H04N19/463 , H04N19/176 , H04N19/70 , H04N19/119 , H04N19/14 , H04N19/33
Abstract: A method for decoding an image, the method including receiving a bitstream including image information, decoding base block size information on a size of a base block, and a residual quantization parameter of a decoding object unit, from the bitstream, deriving a predicted quantization parameter of the decoding object unit based on the base block size information, deriving a quantization parameter of the decoding object unit based on the predicted quantization parameter and the residual quantization parameter, and decoding the decoding object unit based on the quantization parameter of the decoding object unit.
-
公开(公告)号：US20220124333A1
公开(公告)日：2022-04-21
申请号：US17565976
申请日：2021-12-30
Inventor： Sung Chang LIM , Hui Yong KIM , Jin Ho LEE , Jin Soo CHOI , Jin Woong KIM
IPC: H04N19/126 , H04N19/159 , H04N19/61 , H04N19/196 , H04N19/70 , H04N19/50 , H04N19/463
Abstract: The present invention relates to a method for encoding and decoding a quantized matrix and an apparatus using same, the method for encoding a quantized matrix according to the present invention comprising the steps of: determining a quantization matrix to be used for quantization and quantizing; determining the prediction method used for the quantization of the quantization matrix; and encoding quantization matrix information on the basis of the determined prediction method, wherein the prediction method can be either a prediction method between coefficients in the quantization matrix or a duplicate of the quantization matrix.
-
公开(公告)号：US20220070446A1
公开(公告)日：2022-03-03
申请号：US17523025
申请日：2021-11-10
Inventor： Jin Ho LEE , Hyun Suk KO , Jung Won KANG , Sung Chang LIM , Ha Hyun LEE , Dong San JUN , Seung Hyun CHO , Hui Yong KIM , Jin Soo CHOI
IPC: H04N19/105 , H04N19/176 , H04N19/11 , H04N19/119 , H04N19/186 , H04N19/80 , H04N19/91 , H04N19/593 , H04N19/117 , H04N19/51 , H04N19/159 , H04N19/70 , H04N19/96 , H04N19/172
Abstract: An image encoding/decoding method and apparatus for predicting a second color component block using a first color component block are provided. An image decoding method of the present invention comprises deriving a prediction parameter using the first color component block, and predicting the second color component block using the derived prediction parameter.
-
-
-
-
-
-
-
-
-
Search Results
426
records
(took 0.031 seconds)
