Electronics and Telecommunications Research Institute

University-industry Cooperation Group of Kyung Hee University

Kwangwoon University Industry-academic Collaboration Foundation

Lx Semicon Co., Ltd.

Korea Advanced Institute of Science and Technology

Intellectual Discovery Co., Ltd.

Dolby Laboratories Licensing Corporation

Sejong University

Indiana University

Sungkyunkwan University

Other

Samsung Electronics Co., Ltd.

Seoul National University

Agency for Defense Development

Korea Hydro & Nuclear Power Company Ltd.

Jin Soo Choi

Jin Ho Lee

Hui Yong Kim

Sung Chang Lim

Jin Woong Kim

Ha Hyun Lee

Jung Won Kang

Gwang Hoon Park

Se Yoon Jeong

Dong San Jun

Hyun Suk Ko

Kyung Yong Kim

Jong Ho Kim

Suk Hee Cho

Seung Hyun Cho

Jin Woo Hong

Chie Teuk Ahn

Hae Chul Choi

Sung-Chang Lim

Dong Gyu Sim

Sang Min Kim

Seoung-Jun Oh

Sea-Nae Park

Tae Jin Lee

Chang-Beom Ahn

Seung Ryong Kook

Kwang-Su Jeong

Mun Churl Kim

Sea Nae Park

Jae Gon Kim

Seoung Jun Oh

Sukhee Cho

Seung Kwon Beack

Tae Hyun Kim

Dae Young Lee

Hae-Chul Choi

Sang Yong Lee

Jinho Lee

Jongho Kim

Hahyun Lee

Sung Hoon Kim

Dong Wook Kang

Bum Shik Lee

Kyung Ae Moon

Kyeong Hoon Jung

Young Su Heo

Chan Woong Jeon

Yung Lyul Lee

Mi Suk Lee

Joo Young Lee

Dae Young Jang

Jongmo Sung

Jong Mo Sung

Won-Sik Cheong

Hyon Gon Choo

Sung-Hoon Kim

Nam Uk Kim

Jin Suk Kwak

Young Ho Jeong

Jun Woo Choi

Yong Ju Lee

Jeong Il Seo

Byeung Woo Jeon

Dae Yeon Kim

Jooyoung Lee

Minje Kim

Do Hyeon Park

Chung Hyun Ahn

Hyun Eui Kim

Tae One Kim

Tae Jin Park

Yong Jo Ahn

Kyeongok Kang

Dong Ho Kim

Gun Bang

Jeongil Seo

Ji-Hoon Choi

Dong-Gyu Sim

Won Sik Cheong

Woo-taek Lim

Bum Suk Choi

Soon Heung Jung

Hochong Park

Inseon Jang

Dong Kyu Lee

Young-ho Choi

Ji Hoon Lee

Sang Hyun Joo

Hyoung Soo Lim

Sang-min Lim

Eun Soo Lee

Tae Won Hwang

Seung Won Jung

Eung Don Lee

The present invention relates to an apparatus and method for encoding and decoding an image by skip encoding. The image-encoding method by skip encoding, which performs intra-prediction, comprises: performing a filtering operation on the signal which is reconstructed prior to an encoding object signal in an encoding object image; using the filtered reconstructed signal to generate a prediction signal for the encoding object signal; setting the generated prediction signal as a reconstruction signal for the encoding object signal; and not encoding the residual signal which can be generated on the basis of the difference between the encoding object signal and the prediction signal, thereby performing skip encoding on the encoding object signal.

Apparatus for encoding and decoding image by skip encoding and method for same

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

The present invention relates to a method for encoding/decoding a video. To this end, the method for decoding a video may include: deriving a spatial merge candidate from at least one of spatial candidate blocks of a current block, deriving a temporal merge candidate from a co-located block of the current block, and generating a prediction block of the current block based on at least one of the derived spatial merge candidate and the derived temporal merge candidate, wherein a reference picture for the temporal merge candidate is selected based on a reference picture list of a current picture including the current block and a reference picture list of a co-located picture including the co-located block.

Method and apparatus for encoding/decoding a video using a motion compensation

Method and apparatus for encoding/decoding based on motion vector precision adjustment

An image encoding/decoding method and apparatus for predicting a second color component block using a first color component block are provided. An image decoding method of the present invention comprises deriving a prediction parameter using the first color component block, and predicting the second color component block using the derived prediction parameter.

Method and device for encoding/decoding image, and recording medium storing bit stream

A method and a device for encoding/decoding images are disclosed. The method for encoding images comprises the steps of: deriving a scan type of a residual signal for a current block according to whether or not the current block is a transform skip block; and applying the scan type to the residual signal for the current block, wherein the transform skip block is a block to which transform for the current block is not applied and is specified on the basis of information indicating whether or not transform for the current block is to be applied.

Method and device for encoding/decoding images

The present invention relates to a method for encoding and decoding a quantized matrix and an apparatus using same, the method for encoding a quantized matrix according to the present invention comprising the steps of: determining a quantization matrix to be used for quantization and quantizing; determining the prediction method used for the quantization of the quantization matrix; and encoding quantization matrix information on the basis of the determined prediction method, wherein the prediction method can be either a prediction method between coefficients in the quantization matrix or a duplicate of the quantization matrix.

Method for encoding and decoding quantized matrix and apparatus using same

The present invention relates to a method and apparatus for video encoding/decoding by using a geometric modified picture. The encoding method according to the present invention includes: generating a geometric modified picture by geometrically modifying a reference picture; and generating a first prediction block of a current block by performing inter prediction referencing the geometric modified picture.

Method and device for encoding/decoding image using geometrically modified picture

Method and apparatus for encoding/decoding a video using a motion compensation based on motion vector resolution information

The present invention relates to a decoding method for a bit stream that supports a plurality of layers. The decoding method may include receiving information on a set of video parameters that includes information on the plurality of layers, and parsing the set of video parameters to 5 grasp information on the layers in the bit stream.

Decoding method and device for bit stream supporting plurality of layers

The present invention relates to a method and apparatus for encoding and decoding a video image based on transform. The method for decoding a video includes: determining a transform mode of a current block; inverse-transforming residual data of the current block according to the transform mode of the current block; and rearranging the inverse-transformed residual data of the current block according to the transform mode of the current block, wherein the transform mode includes at least one of SDST (Shuffling Discrete Sine Transform), SDCT (Shuffling Discrete cosine Transform), DST (Discrete Sine Transform) or DCT (Discrete Cosine Transform).

Method and apparatus for transform-based image encoding/decoding

Disclosed are a method and an apparatus for coding/decoding an image. The method for decoding the image comprises the steps of: deriving a scale factor of a current block, depending on whether the current block is a conversion skip block; and scaling the current block on the basis of the scale factor, wherein the scale factor of the current block is derived on the basis of the position of a conversion coefficient inside the current block, and wherein the conversion skip block is the current block to which conversion is not applied and is specified on the basis of information indicating whether to apply reconversion to the current block.

Method and apparatus for coding/decoding image

An image encoding/decoding method and apparatus are provided. An image decoding method of the present invention comprises decoding first information indicating whether a maximum of N intra prediction modes are used or a maximum of M intra prediction modes are used for an intra prediction for a current block, in which the M is smaller than the N, deriving an intra prediction mode of the current block, inverse-mapping the derived intra prediction mode on a corresponding intra prediction mode among the maximum N intra prediction modes when the decoded first information indicates that the maximum M intra prediction modes are used for the intra prediction for the current block, and generating an intra prediction block by performing an intra prediction for the current block, based on the inverse-mapped intra prediction mode.

Method and apparatus for encoding/decoding image and recording medium storing bit stream

The present invention relates to an image information decoding method. The decoding method includes receiving a bit stream including a Network Abstraction Layer (NAL) unit that includes information related to encoded image, and parsing a NAL unit header of the NAL unit. The NAL unit header may not include 1 bit flag information that represents whether a picture is a non-reference picture or a reference picture in the entire bit stream during encoding.

Image information decoding method, image decoding method, and device using same

Growing community of inventors

Daejeon, South Korea

Jin Soo Choi