Electronics and Telecommunications Research Institute

Chips&media,inc

Sejong University

Industry-University Cooperation Foundation Korea Aerospace University

Dolby Laboratories Licensing Corporation

Harex Infotech Inc.

Korea Institute of Science and Technology

Intellectual Discovery Co., Ltd.

Dae Yeon Kim

Sung Chang Lim

Jin Ho Lee

Ha Hyun Lee

Jung Won Kang

Hui Yong Kim

Yung Lyul Lee

Dong Jin Park

Nam Uk Kim

Myung Jun Kim

Jae Gon Kim

Yang Woo Kim

Ji Yeon Jung

Wook Je Jeong

Jin Soo Choi

Se Yoon Jeong

Hae Chul Choi

Do Hyeon Park

Hyun Gyu Kim

Jin Woo Hong

Min Yong Jeon

Kyung Yang Park

Hoon Joon Jung

Myoung Hun Jang

Ji Hoon Kang

Min Chul Park

Yong Uk Yoon

Ji Youn Jung

Tae Young Jung

Won Dong Kim

Moon Ho Yang

Que Min Hwang

Kwang Hyun Sung

Bong Sung Jung

Bog Heui Kang

Kwang Su Chang

Do Ha Kim

Eun Sang Cho

Hyun Woo Ko

Kyul Ko

Hee Gu Woo

Dae Hwan Ahn

Ju Ock Lee

Jun Yong Choi

Chul Ki Kim

According to an embodiment of the present invention, there is provided an image decoding method including: obtaining an arithmetic-coded symbol stream from an image stream; identifying a symbol segment from the symbol stream according to symbol segment information signaled from an encoding apparatus; selecting an arithmetic decoding process corresponding to the symbol segment; and collectively processing one or more symbols among multiple symbols included in the symbol segment, in association with the selected arithmetic decoding process.

Method for processing image providing improved arithmetic encoding, method for decoding and encoding image using same, and apparatus for same

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.

Image encoding/decoding method and device, and recording medium in which bitstream is stored

Disclosed herein is an image encoding/decoding method. A method of decoding an image includes determining an intra prediction mode of a current block, and generating a prediction block of the current block, by performing prediction based on the intra prediction mode. When the intra prediction mode of the current block is a matrix-based intra prediction (MIP) mode, a length of a reference sample used for intra prediction is derived based on a length of the current block.

Method and apparatus for encoding/decoding image in intra prediction and recording medium for storing bitstream

There is provided an image encoding/decoding method and apparatus. The image decoding method comprises decoding information on whether or not to perform motion information refinement from a bitstream, obtaining second motion information for first motion information on a current block on the basis of the information and reconstructing at least one of the current block and a neighboring block of the current block by using at least one of the first motion information and the second motion information.

Image encoding/decoding method and apparatus for throughput enhancement, and recording medium storing bitstream

Image encoding/decoding method and apparatus for throughput enhancement using motion vector refinement

Disclosed herein is a method of encoding/decoding an image. The image decoding method includes decoding information on a quantization matrix from a bitstream, acquiring a quantization matrix of a current block based on the information on the quantization matrix, and dequantizing the current block using the quantization matrix of the current block. The acquiring of the quantization matrix of the current block includes deriving a single identifier using at least one of a size of the current block, a prediction mode or a color component, and acquiring the quantization matrix of the current block based on the single identifier.

Quantization matrix encoding/decoding method and device, and recording medium in which bitstream is stored

Disclosed in a method of decoding an image. The method includes determining a cero out region within a current block; partitioning a region except for the zero out region within the current block, on a per transform coefficient group basis; and decoding a transform coefficient on the per transform coefficient group basis.

Method and device for image encoding/decoding, and recording medium having bitstream stored thereon

Disclosed is a method of decoding an image and a method of encoding an image. The method of decoding an image includes: obtaining motion-constrained tile set information; determining, on the basis of the motion-constrained tile set information, a first boundary region of a collocated tile set within a reference picture, which corresponds to a motion-constrained tile set; padding a second boundary region corresponding to the first boundary region; and performing inter prediction on the motion-constrained tile set by using a collocated tile set that includes the padded second boundary region.

Method and device for image encoding and decoding, and recording medium having bit stream stored therein

The present invention relates to an image encoding/decoding method and apparatus. The image decoding method according to the present invention may comprise acquiring transform coefficients distribution information of a neighboring block from a bitstream; direction-adaptively determining an intra prediction mode of a current block to be decoded, according to the transform coefficients distribution information of the neighboring block; and reconstructing the current block, based on the determined intra prediction mode, wherein the direction-adaptively determining includes determining similarity flag information corresponding to the neighboring block, based on the transform coefficients distribution information of the neighboring block.

Image processing method, and image encoding/decoding method and device which use same

Disclosed is a data transmission system that transmits data by using a relay. The relay selects a transmission terminal from among a plurality of terminals accessing a base station. A base station transmits base station data to the relay during a first time slot, and the transmission terminal transmits terminal data to the relay. The relay transmits terminal data to the base station during a second time slot, and transmits base station data to the transmission terminal.

Apparatus and method for coding/decoding image selectively using discrete cosine/sine transform

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.

Video encoding/decoding method, apparatus, and recording medium having bitstream stored thereon

An image decoding method comprises the steps of: obtaining a current coding tree unit (CTU) of a first size configuring a current picture; determining whether to implicitly divide the current coding tree unit; dividing the current coding tree unit into one or more coding units (CUs) based on the determination; obtaining, from a bitstream, division information for a current coding unit among the one or more coding units; and dividing and decoding the current coding unit..

Image encoding and decoding methods with implicit splitting

An image encoding/decoding method and apparatus are disclosed. The method of decoding an image according to the present invention, comprises, obtaining a single stream including subpicture information of a plurality of subpictures; selecting a subpicture to be extracted from among the plurality of subpictures; determining the single stream as a stream to be extracted and obtaining a sub stream for the subpicture to be extracted from the stream to be extracted, by removing or using at least one piece of subpicture information included in the stream to be extracted.

Image encoding/decoding method and apparatus, and recording medium storing bitstream

An image decoding method is disclosed in the present specification. A method of decoding an image, the method may comprises determining whether to perform a context update for a first syntax element of a current block, updating, on the basis of the determination, a context for entropy decoding of the first syntax element and generating, on the basis of the updated context, a bin for the first syntax element, and wherein whether to perform the context update is determined on the basis of the number of pre-decoded predetermined syntax elements for the current block.

Growing community of inventors

Seoul, South Korea

Dae Yeon Kim