Korea Advanced Institute of Science and Technology

Korean Broadcasting System

Electronics and Telecommunications Research Institute

Bum Shik Lee

Mun Churl Kim

Byung Sun Kim

Keun Sik Lee

Chang Seob Park

Sang Jin Hahm

In Joon Cho

Hui Yong Kim

Sung Chang Lim

Jin Ho Lee

Jin Soo Choi

Ha Hyun Lee

Jin Woong Kim

Se Yoon Jeong

Jong Ho Kim

Suk Hee Cho

Chie Teuk Ahn

Jae Il Kim

Jae Ii Kim

Disclosed decoding method of the intra prediction mode comprises the steps of: determining whether an intra prediction mode of a present prediction unit is the same as a first candidate intra prediction mode or as a second candidate intra prediction mode on the basis of 1-bit information; and determining, among said first candidate intra prediction mode and said second candidate intra prediction mode, which candidate intra prediction mode is the same as the intra prediction mode of said present prediction unit on the basis of additional 1-bit information, if the intra prediction mode of the present prediction unit is the same as at least either the first candidate intra prediction mode or the second candidate intra prediction mode, and decoding the intra prediction mode of the present prediction unit.

Method for encoding/decoding block information using quad tree, and device for using same

Disclosed are a method of encoding a division block in video encoding and a method of decoding a division block in video decoding. An input picture is divided into encoding unit blocks. The encoding unit blocks are divided into sub-blocks. The sub-blocks are encoded by selectively using at least one of intra prediction encoding and inter prediction encoding. A decoding process is performed through a reverse process of the encoding method. When pixel values of an encoding unit block are encoded in video encoding, the flexibility in selecting an encoding mode is increased and the efficiency of encoding is increased.

Video encoding method for encoding division block, video decoding method for decoding division block, and recording medium for implementing the same

An image decoding method based on a low-complexity transformation is provided. The method comprises: executing a transformation with respect to a residual block based on a first transformation kernel, and executing a transformation with respect to the transformed residual block based on a second transformation kernel having low-complexity, wherein the first transformation kernel is derived based on a prediction block or an encoding unit block.

Image encoding and decoding method based on low-complexity transformation, and apparatus using same

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Daejeon, South Korea

Bum Shik Lee