Electronics and Telecommunications Research Institute

Kwangwoon University Industry-academic Collaboration Foundation

University-industry Cooperation Group of Kyung Hee University

Korea Advanced Institute of Science and Technology

Yonsei University

Dolby Laboratories Licensing Corporation

Other

Fraunhofer-gesellschaft Zur Foerderung Der Angewandten Forschung E.v.

Seoul National University

Industry-university Cooperation Foundation Hanyang University

Postech Academy-industry Foundation

Research & Industrial Cooperation Group

Jin Woo Hong

Jin Soo Choi

Se Yoon Jeong

Hae Chul Choi

Sung-Chang Lim

Kyeongok Kang

Hui Yong Kim

Jin Woong Kim

Tae Jin Lee

Gwang Hoon Park

Dae Young Jang

Jeongil Seo

Dong Gyu Sim

Chieteuk Ahn

Seoung-Jun Oh

Young-cheol Park

Sea-Nae Park

Min Soo Kim

Chang-Beom Ahn

Seung Ryong Kook

Kwang-Su Jeong

Seung Kwon Beack

Jin Ho Lee

Jong Ho Kim

Suk Hee Cho

Sukhee Cho

Bum Suk Choi

Ha Hyun Lee

Hae-Chul Choi

Jinho Lee

Jongho Kim

Hahyun Lee

Sung Chang Lim

Hochong Park

Seungkwon Beack

Ho Chong Park

Young Ho Jeong

Jeong Ju Yoo

Jae Gon Kim

Soon Choul Kim

Jeoung Lak Ha

Kyung Ae Moon

Mun Churl Kim

Jung Hak Kim

Won-Sik Cheong

Sea Nae Park

Seoung Jun Oh

Chung Hyun Ahn

Min Je Kim

Chang Ki Kim

Seung Chul Kim

Kyeong Ok Kang

Jung Won Kang

Tae Meon Bae

Jong Soo Lim

Inseon Jang

Yong Man Ro

Jinwoong Kim

Sung-Hoon Kim

Yong Ju Lee

Yung Lyul Lee

Dae Yeon Kim

Seung Kwon Baek

Yong Ju Cho

Kwang-Deok Seo

Hyon-Gon Choo

Kwi Hoon Kim

Young Kwon Lim

In Seon Jang

Young-Cheol Park

Young Cheol Park

Tae-Jin Lee

Stefan Geyersberger

Gun Bang

Harald Popp

Jeong Il Seo

Jeong-Il Seo

Yong-Ju Lee

Wan Ho Kim

Dae-Young Jang

Won Sik Cheong

Dong-Gyu Sim

Jae Hyoun Yoo

Kyeong-Ok Kang

Min Woo Park

In-Seon Jang

Jae-hyoun Yoo

Sung-Jea Ko

Kyu Heon Kim

Tae Jung Kim

Sang Hyun Joo

Dong-San Jun

Minje Kim

Jin Suk Kwak

Hae-Kwang Kim

Hyon Gon Choo

Jae-Hyoun Yoo

Seong-Jun Bae

Eung Don Lee

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.

Image encoder and decoder using unidirectional prediction

A Unified Speech and Audio Codec (USAC) that may process a window sequence based on mode switching is provided. The USAC may perform encoding or decoding by overlapping between frames based on a folding point when mode switching occurs. The USAC may process different window sequences for each situation to perform encoding or decoding, and thereby may improve a coding efficiency.

Unified speech/audio codec (USAC) processing windows sequence based mode switching

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

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.

Adaptive video encoding device and method, and appartus using same

Adaptive video decoding and encoding method, and apparatus using same

An encoding apparatus and a decoding apparatus in a transform between a Modified Discrete Cosine Transform (MDCT)-based coder and a different coder are provided. The encoding apparatus may encode additional information to restore an input signal encoded according to the MDCT-based coding scheme, when switching occurs between the MDCT-based coder and the different coder. Accordingly, an unnecessary bitstream may be prevented from being generated, and minimum additional information may be encoded.

Encoding apparatus and decoding apparatus for transforming between modified discrete cosine transform-based coder and different coder

Disclosed is an LPC residual signal encoding/decoding apparatus of an MDCT based unified voice and audio encoding device. The LPC residual signal encoding apparatus analyzes a property of an input signal, selects an encoding method of an LPC filtered signal, and encode the LPC residual signal based on one of a real filterbank, a complex filterbank, and an algebraic code excited linear prediction (ACELP).

LPC residual signal encoding/decoding apparatus of modified discrete cosine transform (MDCT)-based unified voice/audio encoding device

Adaptive image encoding device and method

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.

Image encoding/decoding apparatus and method

Growing community of inventors

Daejeon, South Korea

Jin Woo Hong