B1 Institute of Image Technology, Inc.

Industry-university Cooperation Foundation Hanyang University

Guangdong Oppo Mobile Telecommunications Corp., Ltd.

Dolby Laboratories Licensing Corporation

Intellectual Discovery Co., Ltd.

Other

Samsung Electronics Co., Ltd.

Doosan Heavy Industries & Construction Co., Ltd

Lg Electronics Inc.

Ki Baek Kim

Je Chang Jeong

Jae Hun Kim

Won Jin Lee

Hye Jin Shin

Jong Sang Yoo

Jang Hyeok Yun

Kyung Jun Lee

Dong Jin Jung

Sang Gu Lee

Do Kyung Lee

Jung Hyun Lee

Ung Hwang

Dae Won Lee

Joon Kui Ahn

Dong Youn Seo

Bong Hoe Kim

Hak Seong Kim

Suk Hyon Yoon

Hun Joo Lee

Yeol Ho Lee

Soo Suk Lee

Sung Chul Jung

In Jae Jung

Kyung Kook Kim

Mu Hyoung Lee

Tae Sung Ahn

A method of decoding an image, includes obtaining at least one offset for a picture, deriving a variable for scaling for the picture based on the at least one offset, and performing inter prediction based on the variable for scaling for the picture. The at least one offset is defined with a direction of scaling.

Image data encoding/decoding method and apparatus

An image encoding/decoding method and apparatus according to the present invention may determine a motion information encoding mode of a target block, configure a motion information prediction candidate group according to the motion information encoding mode, select one candidate from the motion information prediction candidate group so as to induce the selected candidate as motion information of the target block, and perform inter-prediction on the target block on the basis of the motion information of the target block.

Image encoding/decoding method and apparatus

An image prediction method according to the present invention may comprise: identifying a reference pixel region designated for obtaining correlation information; determining a reference pixel processing configuration on the basis of determination of the availability of the reference pixel region; and performing intra prediction according to the determined reference pixel processing. As described above, performing intra prediction on the basis of the availability of a reference pixel according to the present invention can improve encoding performance.

Image encoding/decoding method and device

A method for decoding a 360-degree image includes: receiving a bitstream obtained by encoding a 360-degree image; generating a prediction image by making reference to syntax information obtained from the received bitstream; combining the generated prediction image with a residual image obtained by dequantizing and inverse-transforming the bitstream, so as to obtain a decoded image; and reconstructing the decoded image into a 360-degree image according to a projection format. Here, generating the prediction image includes: checking, from the syntax information, prediction mode accuracy for a current block to be decoded; determining whether the checked prediction mode accuracy corresponds to most probable mode (MPM) information obtained from the syntax information; and when the checked prediction mode accuracy does not correspond to the MPM information, reconfiguring the MPM information according to the prediction mode accuracy for the current block.

Disclosed are methods and apparatuses for image data encoding/decoding. A method of decoding an image includes receiving a bitstream in which the image is encoded; obtaining index information for specifying a block division type of a current block in the image; and determining the block division type of the current block from a candidate group pre-defined in the decoding apparatus. The candidate group includes a plurality of candidate division types, including at least one of a non-division, a first quad-division, a second quad-division, a binary-division or a triple-division. The method also includes dividing the current block into a plurality of sub-blocks; and decoding each of the sub-blocks with reference to syntax information obtained from the bitstream.

Growing community of inventors

Seoul, South Korea

Ki Baek Kim