公开(公告)号：US20250061538A1

公开(公告)日：2025-02-20

申请号：US18805459

申请日：2024-08-14

Applicant: Electronics and Telecommunications Research Institute

Inventor： Youn Hee KIM ,  JooYoung LEE ,  Se Yoon JEONG ,  Jin Soo CHOI ,  Jung Won KANG

IPC: G06T3/067 ,  G06T3/4046

Abstract: A feature map encoding method according to the present disclosure may include generating a feature map from a multi-level feature group; and performing PCA (Picture Component Analysis) transform for the feature map. Here, generating the feature map comprises reshaping the multi-level feature group; and generating the feature map by merging a plurality of base units generated by the reshape.

公开(公告)号：US20250039410A1

公开(公告)日：2025-01-30

申请号：US18918728

申请日：2024-10-17

Applicant: Electronics and Telecommunications Research Institute

Inventor： Sung Chang LIM ,  Hui Yong KIM ,  Se Yoon JEONG ,  Jong Ho KIM ,  Ha Hyun LEE ,  Jin Ho LEE ,  Jin Soo CHOI ,  Jin Woong KIM

IPC: H04N19/176 ,  H04N19/129 ,  H04N19/136

Abstract: Provided is a transform coefficient scan method including: determining a reference transform block for a decoding target block; deriving a scanning map of the decoding target block using scanning information of the reference transform block; and performing inverse scanning on a transform coefficient of the decoding target block using the derived scanning map. According to the present invention, picture encoding/decoding efficiency may be improved.

公开(公告)号：US20240107002A1

公开(公告)日：2024-03-28

申请号：US18530617

申请日：2023-12-06

Applicant: Electronics and Telecommunications Research Institute ,  University-Industry Cooperation Group of Kyung Hee University

Inventor： Se Yoon JEONG ,  Hui Yong KIM ,  Sung Chang LIM ,  Jin Ho LEE ,  Ha Hyun LEE ,  Jong Ho KIM ,  Jin Soo CHOI ,  Jin Woong KIM ,  Chie Teuk AHN ,  Gwang Hoon PARK ,  Kyung Yong KIM ,  Tae Ryong KIM ,  Han Soo LEE

IPC: H04N19/10 ,  H04N19/105 ,  H04N19/136 ,  H04N19/196

CPC classification number: H04N19/10 ,  H04N19/105 ,  H04N19/136 ,  H04N19/197 ,  H04N19/196 ,  H04N19/61

Abstract: A method for coding image information includes generating prediction information by predicting information on a current coding unit, and determining whether the information on the current coding unit is the same as the prediction information. When the information on the current coding unit is the same as the prediction information, a flag indicating that the information on the current coding unit is the same as the prediction information is coded and transmitted. When the information on the current coding unit is not the same as the prediction information, a flag indicating that the information on the current coding unit is not the same as the prediction information and the information on the current coding unit are coded and transmitted. At the generating of the prediction information, the prediction information is generated by using the information on the coding unit neighboring to the current coding unit

公开(公告)号：US20240022747A1

公开(公告)日：2024-01-18

申请号：US18475817

申请日：2023-09-27

Applicant: Electronics and Telecommunications Research Institute

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: H04N19/44 ,  H04N19/52 ,  H04N19/503 ,  H04N19/50

CPC classification number: H04N19/44 ,  H04N19/52 ,  H04N19/503 ,  H04N19/50 ,  H04N19/597

Abstract: An inter prediction method according to the present invention comprises the steps of: selecting candidate units from among reconstructed neighbor units; creating a candidate unit set with respect to units to be decoded, using the selected candidate units; determining a reference unit from among the candidate units which constitute the created candidate unit set; and performing inter prediction on the units to be decoded, using the determined reference unit. According to the present invention, image encoding/decoding efficiency can be improved.

公开(公告)号：US20230276058A1

公开(公告)日：2023-08-31

申请号：US18311330

申请日：2023-05-03

Applicant: Electronics and Telecommunications Research Institute ,  Kwangwoon University Industry-Academic Collaboration Foundation ,  University-Industry Cooperation Group of Kyung Hee University

Inventor： Hae Chul CHOI ,  Se Yoon JEONG ,  Sung-Chang LIM ,  Jin Soo CHOI ,  Jin Woo HONG ,  Dong Gyu SIM ,  Seoung-Jun OH ,  Chang-Beom AHN ,  Gwang Hoon PARK ,  Seung Ryong KOOK ,  Sea-Nae PARK ,  Kwang-Su JEONG

IPC: H04N19/159 ,  H04N19/132 ,  H04N19/587 ,  H04N19/593 ,  H04N19/61 ,  H04N19/70 ,  H04N19/11 ,  H04N19/124 ,  H04N19/44 ,  H04N19/50 ,  H04N19/625 ,  H04N19/91 ,  H04N19/147 ,  H04N19/176 ,  H04N19/182 ,  H04N19/51 ,  H04N19/615 ,  H04N19/105 ,  H04N19/117 ,  H04N19/43

CPC classification number: H04N19/159 ,  H04N19/132 ,  H04N19/587 ,  H04N19/593 ,  H04N19/61 ,  H04N19/70 ,  H04N19/11 ,  H04N19/124 ,  H04N19/44 ,  H04N19/50 ,  H04N19/625 ,  H04N19/91 ,  H04N19/147 ,  H04N19/176 ,  H04N19/182 ,  H04N19/51 ,  H04N19/615 ,  H04N19/105 ,  H04N19/117 ,  H04N19/43 ,  H04N19/172

Abstract: The present invention relates to an image encoding and decoding technique, and more particularly, to an image encoder and decoder using unidirectional prediction. The image encoder includes a dividing unit to divide a macro block into a plurality of sub-blocks, a unidirectional application determining unit to determine whether an identical prediction mode is applied to each of the plurality of sub-blocks, and a prediction mode determining unit to determine a prediction mode with respect to each of the plurality of sub-blocks based on a determined result of the unidirectional application determining unit.

公开(公告)号：US20230188749A1

公开(公告)日：2023-06-15

申请号：US18164097

申请日：2023-02-03

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jin Ho LEE ,  Hui Yong KIM ,  Se Yoon JEONG ,  Suk Hee CHO ,  Ha Hyun LEE ,  Jong Ho KIM ,  Sung Chang LIM ,  Jin Soo CHOI ,  Jin Woong KIM ,  Chie Teuk AHN

IPC: H04N19/593 ,  H04N19/117 ,  H04N19/157 ,  H04N19/176 ,  H04N19/82 ,  H04N19/136 ,  H04N19/44 ,  H04N19/105

CPC classification number: H04N19/593 ,  H04N19/44 ,  H04N19/82 ,  H04N19/105 ,  H04N19/117 ,  H04N19/136 ,  H04N19/157 ,  H04N19/176 ,  H04N19/182

Abstract: Provided is a method and apparatus for performing intra-prediction using an adaptive fitter. The method for performing intra-prediction includes the steps of: determining whether or not to apply a first filter for a reference pixel value on the basis of information of a neighboring block of a current block: applying the first filter for the reference pixel value when it is determined to apply the first filter; performing intra-prediction on the current block on the basis of the reference pixel value; determining whether or not to apply a second filter for a prediction value according to each prediction mode of the current block, which is predicted by the intra-prediction performance on the basis of the information of the neighboring block; and applying the second filter for the prediction value according to each prediction mode of the current block when it is determined to apply the second filter.

公开(公告)号：US20220021873A1

公开(公告)日：2022-01-20

申请号：US17474517

申请日：2021-09-14

Applicant: Electronics and Telecommunications Research Institute

Inventor： Sung Chang LIM ,  Jong Ho KIM ,  Hae Chul CHOI ,  Hui Yong KIM ,  Ha Hyun LEE ,  Jin Ho LEE ,  Se Yoon JEONG ,  Suk Hee CHO ,  Jin Soo CHOI ,  Jin Woo HONG ,  Jin Woong KIM

IPC: H04N19/105 ,  H04N19/503 ,  H04N19/176 ,  H04N19/46 ,  H04N19/593 ,  H04N19/11 ,  H04N19/157

Abstract: Provided are an image encoding method and device. When carrying out image encoding for a block within a slice, at least one block in a restored block of the slice is set as a reference block. When this is done, the encoding parameters of the reference block are distinguished, and the block to be encoded is encoded adaptively based on the encoding parameters.

公开(公告)号：US20210306622A1

公开(公告)日：2021-09-30

申请号：US17344161

申请日：2021-06-10

Applicant: Electronics and Telecommunications Research Institute ,  University-Industry Cooperation Group of Kyung Hee University

Inventor： Se Yoon JEONG ,  Hui Yong KIM ,  Sung Chang LIM ,  Jin Ho LEE ,  Ha Hyun LEE ,  Jong Ho KIM ,  Jin Soo CHOI ,  Jin Woong KIM ,  Chie Teuk AHN ,  Gwang Hoon PARK ,  Kyung Yong KIM ,  Han Soo LEE ,  Tae Ryong KIM

IPC: H04N19/10 ,  H04N19/105 ,  H04N19/136 ,  H04N19/196

Abstract: A method for coding image information includes generating prediction information by predicting information on a current coding unit, and determining whether the information on the current coding unit is the same as the prediction information. When the information on the current coding unit is the same as the prediction information, a flag indicating that the information on the current coding unit is the same as the prediction information is coded and transmitted. When the information on the current coding unit is not the same as the prediction information, a flag indicating that the information on the current coding unit is not the same as the prediction information and the information on the current coding unit are coded and transmitted. At the generating of the prediction information, the prediction information is generated by using the information on the coding unit neighboring to the current coding unit

公开(公告)号：US20200221101A1

公开(公告)日：2020-07-09

申请号：US16820814

申请日：2020-03-17

Applicant: Electronics and Telecommunications Research Institute ,  Kwangwoon University Industry-Academic Collaboration Foundation ,  University-Industry Cooperation Group of Kyung Hee University

Inventor： Hae Chul CHOI ,  Se Yoon JEONG ,  Sung-Chang LIM ,  Jin Soo CHOI ,  Jin Woo HONG ,  Dong Gyu SIM ,  Seoung-Jun OH ,  Chang-Beom AHN ,  Gwang Hoon PARK ,  Seung Ryong KOOK ,  Sea-Nae PARK ,  Kwang-Su JEONG

IPC: H04N19/159 ,  H04N19/132 ,  H04N19/587 ,  H04N19/593 ,  H04N19/61 ,  H04N19/70 ,  H04N19/11 ,  H04N19/124 ,  H04N19/44 ,  H04N19/50 ,  H04N19/625 ,  H04N19/91 ,  H04N19/147 ,  H04N19/176 ,  H04N19/182 ,  H04N19/51 ,  H04N19/615 ,  H04N19/105 ,  H04N19/117 ,  H04N19/43

Abstract: The present invention relates to an image encoding and decoding technique, and more particularly, to an image encoder and decoder using unidirectional prediction. The image encoder includes a dividing unit to divide a macro block into a plurality of sub-blocks, a unidirectional application determining unit to determine whether an identical prediction mode is applied to each of the plurality of sub-blocks, and a prediction mode determining unit to determine a prediction mode with respect to each of the plurality of sub-blocks based on a determined result of the unidirectional application determining unit.

公开(公告)号：US20200045333A1

公开(公告)日：2020-02-06

申请号：US16598846

申请日：2019-10-10

Applicant: Electronics and Telecommunications Research Institute

Inventor： Hae-Chul CHOI ,  Se Yoon JEONG ,  Sukhee CHO ,  Hui Yong KIM ,  Jinho LEE ,  Hahyun LEE ,  Sung-Chang LIM ,  Jongho KIM ,  Jin Soo CHOI ,  Jin Woo HONG ,  Jin Woong KIM

IPC: H04N19/52 ,  H04N19/513 ,  H04N19/172 ,  H04N19/176

Abstract: Provided is an image encoding/decoding apparatus and method. The image encoding apparatus may include a motion vector prediction unit to perform a prediction with respect to an arbitrary motion vector of a current block within an image, using at least one of vector information of a motion vector corresponding to an adjacent block and vector information of a previous motion vector of the current block, and a differential determination unit to determine differential information of a motion vector of the current block based on the motion vector predicted in the motion vector prediction unit and an actual motion vector of the current block.