公开(公告)号：US12010307B2

公开(公告)日：2024-06-11

申请号：US17971991

申请日：2022-10-24

Applicant: SK TELECOM CO., LTD.

Inventor： Jinhan Song ,  Jeongyeon Lim ,  Haekwang Kim ,  Joohee Moon ,  Yunglyul Lee ,  Jongki Han ,  Byeungwoo Jeon

IPC: H04N19/119 ,  H04N19/124 ,  H04N19/129 ,  H04N19/182 ,  H04N19/436 ,  H04N19/625 ,  H04N19/63 ,  H04N19/70 ,  H04N19/91

CPC classification number: H04N19/119 ,  H04N19/124 ,  H04N19/129 ,  H04N19/182 ,  H04N19/436 ,  H04N19/625 ,  H04N19/63 ,  H04N19/70 ,  H04N19/91

Abstract: The present disclosure provides a method and apparatus for subband-coding a frequency conversion unit and a video encoding/decoding method a video encoding/decoding apparatus using the same. The method and the apparatus for subband-coding the frequency conversion unit include generating an encoding stream by splitting the frequency conversion unit into one or more frequency domains, generating frequency domain encoding information according to whether there is a non-zero frequency coefficient in each frequency domain, scanning the frequency coefficient of each frequency domain to generate a frequency domain frequency coefficient stream, and binarizing and encoding the frequency domain encoding information and the scanned frequency domain frequency coefficient stream.

公开(公告)号：US11425392B2

公开(公告)日：2022-08-23

申请号：US17161761

申请日：2021-01-29

Applicant: SK TELECOM CO., LTD.

Inventor： Jeongyeon Lim ,  Joong Gunn Park ,  Byeungwoo Jeon ,  Haekwang Kim ,  Joohee Moon ,  Yunglyul Lee ,  Jongki Han ,  Jungyoup Yang ,  Jaehwan Kim ,  Kwanghyun Won ,  Hoyoung Lee

IPC: H04N19/139 ,  H04N19/61 ,  H04N19/503 ,  H04N19/52 ,  H04N19/176 ,  H04N19/109 ,  H04N19/147

Abstract: A video encoding apparatus includes: an inter prediction unit to determine a motion parameter of a current block and generate a predicted block of the current block, by performing a motion estimation on the current block; and an optimal mode determining unit to set a prediction mode of the current block as a SKIP mode when (i) the motion parameter of the current block is identical to a motion parameter of a candidate block among a plurality of candidate blocks and (ii) all-zero coefficients result from a transform and a quantization performed on a residual data block representing the difference between the current block and the predicted block.

公开(公告)号：US09955167B1

公开(公告)日：2018-04-24

申请号：US15851000

申请日：2017-12-21

Applicant: SK TELECOM CO., LTD.

Inventor： Jinhan Song ,  Jeongyeon Lim ,  Joohee Moon ,  Yunglyul Lee ,  Haekwang Kim ,  Byeungwoo Jeon ,  Jongki Han ,  Hyoungmee Park ,  Juock Lee

IPC: H04N19/147 ,  H04N19/109 ,  H04N19/122 ,  H04N19/119 ,  H04N19/61 ,  H04N19/13 ,  H04N19/105 ,  H04N19/176 ,  H04N19/11 ,  H04N19/107

CPC classification number: H04N19/147 ,  H04N19/105 ,  H04N19/107 ,  H04N19/109 ,  H04N19/11 ,  H04N19/119 ,  H04N19/122 ,  H04N19/13 ,  H04N19/176 ,  H04N19/61

Abstract: A video decoding method, includes: reconstructing a syntax corresponding to at least one of a first block, a second block and a third block, wherein the first block is generated by dividing a frame for decoding, the second block corresponds to a unit of a prediction and is generated by dividing the first block, and the third block corresponds to a unit of transformation and is generated by dividing the first block in a tree structure; and reconstructing a prediction block corresponding to at least one of the first block, the second block and the third block, wherein the second block includes a batch mode flag for indicating whether a batch mode is used.

公开(公告)号：US09888248B2

公开(公告)日：2018-02-06

申请号：US14937277

申请日：2015-11-10

Applicant: SK TELECOM CO., LTD.

Inventor： Jinhan Song ,  Jeongyeon Lim ,  Haekwang Kim ,  Joohee Moon ,  Yunglyul Lee ,  Jongki Han ,  Byeungwoo Jeon

IPC: H04N7/12 ,  H04N19/176 ,  H04N19/52 ,  H04N19/615 ,  H04N19/124 ,  H04N19/44 ,  H04N19/513 ,  H04N19/61 ,  H04N19/503

CPC classification number: H04N19/176 ,  H04N19/124 ,  H04N19/44 ,  H04N19/503 ,  H04N19/513 ,  H04N19/52 ,  H04N19/61 ,  H04N19/615

Abstract: An apparatus for decoding a current block includes: a decoding unit to extract a first identification information from a bitstream, and reconstruct a quantized frequency residual block of the current block from the bitstream; a dequantization and inverse transform unit to dequantize and inversely transform the quantized frequency residual block to reconstruct a residual block of the current block; an inter prediction unit to generate the plurality of motion vector candidates of the current block from neighboring blocks of the current blocks, select a motion vector candidate from the plurality of motion vector candidates based on a second identification information, the second identification information being decoded from the bitstream, reconstruct the motion vector of the current block as the selected motion vector candidate, and generate a predicted block of the current block by using the reconstructed motion vector of the current block.

公开(公告)号：US09749653B2

公开(公告)日：2017-08-29

申请号：US15449446

申请日：2017-03-03

Applicant: SK TELECOM CO., LTD.

Inventor： Sunyeon Kim ,  Jeongyeon Lim ,  Byeungwoo Jeon ,  Joohee Moon ,  Yunglyul Lee ,  Haekwang Kim ,  Jongki Han ,  Jungyoup Yang ,  Kwanghyun Won

IPC: H04N7/32 ,  H04N19/52 ,  H04N19/61 ,  H04N19/124 ,  H04N19/56

CPC classification number: H04N19/52 ,  H04N19/124 ,  H04N19/132 ,  H04N19/176 ,  H04N19/182 ,  H04N19/56 ,  H04N19/57 ,  H04N19/61

Abstract: The present disclosure relates to a method and apparatus for encoding/decoding a motion vector and a method and apparatus for encoding/decoding video using same. The motion vector encoding method includes selecting a predicted motion vector candidate set including one or more predicted motion vector candidates for a block; determining one or more search ranges for predicted motion vector candidate set; selecting one predicted motion vector candidate among one or more predicted motion vector candidates as predicted motion vector for each search point with respect to each search point within search range by first determination criterion prearranged with video decoding apparatus; selecting one predicted motion vector among the predicted motion vectors for each search point by a second determination criterion not prearranged with the video decoding apparatus, and determining predicted motion vector, differential motion vector, and current motion vector; and generating and encoding the differential motion vector as motion information.

公开(公告)号：US09686562B2

公开(公告)日：2017-06-20

申请号：US15298492

申请日：2016-10-20

Applicant: SK TELECOM CO., LTD.

Inventor： Jinhan Song ,  Jeongyeon Lim ,  Yunglyul Lee ,  Joohee Moon ,  Haekwang Kim ,  Byeungwoo Jeon ,  Jongki Han ,  Jaehee Cho ,  Hyundong Kim ,  Daeyeon Kim ,  Sungwook Hong

IPC: H04N19/61 ,  H04N19/50 ,  H04N19/176 ,  H04N19/119 ,  H04N19/147 ,  H04N19/109 ,  H04N19/523 ,  H04N19/124 ,  H04N19/43

CPC classification number: H04N19/50 ,  H04N19/109 ,  H04N19/119 ,  H04N19/124 ,  H04N19/147 ,  H04N19/176 ,  H04N19/43 ,  H04N19/523 ,  H04N19/61

Abstract: A video encoding apparatus, includes: a block partitioning unit to determine a partition form, among candidate partition forms, for partitioning a current block into one or more partition blocks; a prediction unit to generate one or more predicted blocks respectively corresponding to the one or more partition blocks by using a scale factor which indicates a ratio of pixel sampling; a subtractor to generate a residual block of the current block by subtracting the predicted blocks from one or more partition blocks corresponding thereto; a transformer to generate at least one transform block by transforming the residual block; a quantizer to generate at least one quantized transform block by quantizing the at least one transform block; and an encoder to encode, into the bitstream, information on the scale factor, information on the determined partition form and the at least one quantized transform block.

公开(公告)号：US09674520B2

公开(公告)日：2017-06-06

申请号：US14282462

申请日：2014-05-20

Applicant: SK TELECOM CO., LTD.

Inventor： Jeongyeon Lim ,  Joong Gunn Park ,  Yunglyul Lee ,  Joohee Moon ,  Haekwang Kim ,  Byeungwoo Jeon ,  Jongki Han ,  Ryeonghee Kwon

IPC: H04N19/119 ,  H04N19/176 ,  H04N19/147 ,  H04N19/19 ,  H04N19/96

CPC classification number: H04N19/103 ,  G06T9/004 ,  H04N1/417 ,  H04N5/145 ,  H04N19/119 ,  H04N19/147 ,  H04N19/157 ,  H04N19/176 ,  H04N19/19 ,  H04N19/513 ,  H04N19/52 ,  H04N19/61 ,  H04N19/70 ,  H04N19/96

Abstract: An apparatus for encoding images includes: a predictor to determine a prediction unit (PU) mode among a plurality of PU modes indicating types of partition of a current coding unit (CU) into one or more prediction units (PUs), and generate a predicted block of the current CU by performing an intra prediction or an inter prediction for each PU of the determined PU mode, wherein a size of the current CU is 2N×2N, and the plurality of PU modes includes 2N×hN or hN×2N PU mode in which the current CU is partitioned into PUs respectively having a size of 2N×hN or hN×2N, h being a fractional number smaller than 1; a subtractor to subtract the predicted block from the current CU to generate a residual block; a transformer to transform the residual block into a frequency domain to generate a frequency one or more transform blocks.

公开(公告)号：US09602834B2

公开(公告)日：2017-03-21

申请号：US15031378

申请日：2016-04-22

Applicant: SK TELECOM CO., LTD.

Inventor： Jinhan Song ,  Jeongyeon Lim ,  Yunglyul Lee ,  Joohee Moon ,  Haekwang Kim ,  Byeungwoo Jeon ,  Jongki Han ,  Jeong Pil Kim ,  Daeyeon Kim

IPC: H04N19/523 ,  H04N19/126 ,  H04N19/176 ,  H04N19/182 ,  H04N19/184 ,  H04N19/124 ,  H04N19/513 ,  H04N19/70 ,  H04N19/80

CPC classification number: H04N19/523 ,  H04N19/105 ,  H04N19/124 ,  H04N19/126 ,  H04N19/159 ,  H04N19/172 ,  H04N19/176 ,  H04N19/182 ,  H04N19/184 ,  H04N19/186 ,  H04N19/513 ,  H04N19/61 ,  H04N19/70 ,  H04N19/80

Abstract: A video encoding apparatus includes: a predictor to generate a prediction block based on interpolating chroma sub-samples of a reference frame referenced by a motion vector of a current block; a subtractor to generate a residual block based on subtracting the prediction block from the current block; a transformer to generate a frequency-transformed block based on transforming the residual block; a quantizer to generate a quantized frequency-transformed block based on quantizing the frequency-transformed block; and an encoder to encode the quantized frequency-transformed block into a bitstream.

公开(公告)号：US20160309144A9

公开(公告)日：2016-10-20

申请号：US13942081

申请日：2013-07-15

Applicant: SK TELECOM CO., LTD.

Inventor： Jeongyeon LIM ,  Joohee Moon ,  Yunglyul Lee ,  Haekwang Kim ,  Byeungwoo Jeon ,  Jongki Han ,  Juock Lee ,  Hyoungmee Park

IPC: H04N7/26

CPC classification number: H04N19/513 ,  H04N19/46 ,  H04N19/52 ,  H04N19/523 ,  H04N19/91

Abstract: A method performed by a motion vector encoding apparatus for encoding a motion vector includes: determining a first motion vector and a second motion vector relating to a current block to be encoded; determining predicted motion vectors of the first motion vector and the second motion vector, respectively; calculating a first differential motion vector and a second differential motion vector; the first differential motion vector corresponding to a difference between the first motion vector and the predicted motion vector of the first motion vector, the second differential motion vector corresponding to a difference between the second motion vector and the predicted motion vector of the second motion vector; and encoding the first differential motion vector and the second differential motion vector, wherein the first motion vector and the second motion vector have different resolutions.

公开(公告)号：US09357220B2

公开(公告)日：2016-05-31

申请号：US14603892

申请日：2015-01-23

Applicant: SK TELECOM CO., LTD.

Inventor： Sunyeon Kim ,  Jeongyeon Lim ,  Jaehoon Choi ,  Gyumin Lee ,  Joohee Moon ,  Yunglyul Lee ,  Haekwang Kim ,  Byeungwoo Jeon ,  Jongki Han ,  Dongwon Kim

IPC: G06K9/36 ,  G06K9/46 ,  H04N19/176 ,  H04N19/61 ,  H04N19/96 ,  H04N19/463 ,  H04N19/00 ,  H04N19/44 ,  H04N19/85 ,  H04N19/105 ,  H04N19/119 ,  H04N19/146 ,  H04N19/46 ,  H04N19/60

CPC classification number: H04N19/176 ,  H04N19/00 ,  H04N19/105 ,  H04N19/119 ,  H04N19/146 ,  H04N19/44 ,  H04N19/46 ,  H04N19/463 ,  H04N19/60 ,  H04N19/61 ,  H04N19/85 ,  H04N19/96

Abstract: The present disclosure provides an encoding/decoding method using a tree structure. The encoding method for encoding image information includes: grouping predetermined areas having the image information into a plurality of groups, and generating a node value of each layer up to an uppermost layer by determining a minimum value or a maximum value of information to be encoded within grouped areas as information on the grouped areas; and encoding a difference value between the node value of each layer and a node value of an upper layer or a difference value between the node value of each layer and a value determined based on a preset criterion. Accordingly, the encoding efficiency and in turn the video compression efficiency are improved by using the tree structure in the encoding of various pieces of image information and the decoding of the resultant encoded data.

Abstract translation: 本公开提供了使用树结构的编码/解码方法。 用于编码图像信息的编码方法包括：将具有图像信息的预定区域分组成多个组，并通过确定要被编码的信息的最小值或最大值来生成每层的节点值直到最上层 分组区域作为分组区域的信息; 对各层的节点值和上层的节点值之间的差值或每层的节点值之间的差值与基于预设标准确定的值进行编码。 因此，通过在编码各种图像信息和对所得到的编码数据的解码中使用树结构来提高编码效率，进而提高视频压缩效率。