Electronics and Telecommunications Research Institute

Industry-university Cooperation Foundation Korea Aerospace University

Sejong University

Intellectual Discovery Co., Ltd.

Hanwha Vision Co., Ltd.

Chips & Media, Inc.

Industry-university Cooperation Foundation Korea Aerospace

Industry-university Cooperation Foundation Korea Aerospace University Korea

Industry University&#x2014;cooperation Foundation Korea Aerospace University

Yong Uk Yoon

Do Hyeon Park

Jae Gon Kim

Sung Chang Lim

Jin Ho Lee

Jung Won Kang

Hui Yong Kim

Ji Hoon Do

Ha Hyun Lee

Yung Lyul Lee

Dae Yeon Kim

Do Heon Park

There is provided an video encoding/decoding method and apparatus. The video decoding method comprises acquiring a bitstream including a predetermined context element, performing at least one of a context model determination, a probability update, and a probability interval determination on the predetermined syntax element, and arithmetically decoding the predetermined syntax element on the basis of a result of the performance.

Context adaptive binary arithmetic coding method and device

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 herein are image encoding/decoding method and apparatus. The image decoding method according to the present invention includes: obtaining prediction mode information of a neighboring block for a current block from a bitstream; by using the obtained information, deriving a prediction mode of the neighboring block; and, based on the prediction mode of the neighboring block, reconstructing the current block.

Intra prediction mode, and entropy encoding/decoding method and device

An encoding/decoding method and device according to the present disclosure may: determine at least one among a plurality of inter prediction modes as the inter prediction mode of the current block; form an inter prediction candidate list on the basis of the determined inter prediction mode; perform motion compensation on the basis of one prediction candidate in the inter prediction candidate list, and generate a first prediction block of the current block; and correct the first prediction block by using a prescribed intra prediction mode.

Inter prediction encoding and decoding method using combination of prediction blocks generated based on the weighted sums of prediction blocks, and computer-readable storage medium bitstream to be decoded thereby

The present invention provides a method and device wherein segmentation information for a current picture is encoded/decoded, and the current picture is segmented into at least one of sub-picture units, slice units, and tile units according to the encoded/decoded segmentation information.

Method and device for high-level image segmentation and image encoding/decoding

Disclosed herein are an image encoding/decoding method and apparatus. The image decoding method of the present disclosure may include obtaining maximum transform block size information, deriving a maximum transform block size on the basis of the maximum transform block size information, and, determining ether or not a secondary inverse transform is applied to the current block on the basis of the maximum transform block size and a horizontal size and a vertical size of a current block.

Image encoding/decoding method and apparatus

Disclosed herein is a video decoding method including determining a zero-out width threshold and a zero-out height threshold for distinguishing between a transform coefficient coding region and a zero-out region of a current block according to a size of the current block, determining the transform coefficient coding region and the zero-out region of the current block according to the zero-out width threshold and the zero-out height threshold, acquiring transform coefficient information of the transform coefficient coding region from a bitstream and determining a level of a transform coefficient of the transform coefficient coding region according to the transform coefficient information, determining a level of a transform coefficient of the zero-out region as 0 without acquiring transform coefficient information, and reconstructing the current block by inversely transforming the transform coefficient of the current block.

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

An image encoding and decoding method comprises the steps of: determining an inter-component prediction mode of a chrominance component block on the basis of an inter-component prediction mode list and predetermined index information; determining a reference sample for inter-component prediction of the chrominance component block on the basis of the determined inter-component prediction mode; deriving the parameters of a linear prediction model by using the reference sample; and performing inter-component prediction for the chrominance component block by using the parameters of the linear prediction model.

Inter-image component prediction method, and image encoding and decoding method and device using same

An image encoding/decoding method and apparatus are disclosed. The method of decoding an image according to the present invention, comprises, generating a first prediction block of a current block, generating a second prediction block of the current block and generating a final prediction sample of the current block using a sample unit weighted sum of the first prediction block and the second prediction block, wherein a weight used for the sample unit weighted sum is determined based on a location of a current luma sample and a geometric prediction mode (GPM) boundary line for partitioning the current block.

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

There is provided an image encoding/decoding method and apparatus. An image decoding method according to the present invention may comprise reconstructing a most frequent mode (MFM) indicator indicating whether or not an intra prediction mode of a current block is a predetermined intra prediction mode, deriving, on the basis of the MFM indicator, the intra prediction mode of the current block, and generating a prediction block of the current block by performing intra prediction on the current block on the basis of the intra prediction mode.

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

Inter prediction encoding and decoding method using combination of prediction blocks, and computer-readable storage medium bitstream to be decoded thereby

Growing community of inventors

Jeju-si, South Korea

Yong Uk Yoon