Samsung Electronics Co., Ltd.

Kyo-hyuk Lee

Woo-jin Han

Tammy Lee

Sang-rae Lee

Min-su Cheon

Jianle Chen

Jae-chool Lee

Sang-chang Cha

Il-koo Kim

Bae-Keun Lee

Jung-hye Min

Hae-kyung Jung

Jae-young Lee

Ho-Jin Ha

Jae-Hyun Kim

Ki-won Yoo

Sung-Oh Kim

Chan-sik Park

Mathew Manu

Manu Mathew

Jeong-Hoon Park

Chan-yul Kim

Hak-sup Song

Young-ho Moon

Yu-Mi Sohn

Jong-bum Choi

Jong-Bum Choi

Jae-moon Kim

Sang-kwon Na

Hyung-Ju Chun

Duck-yeon Kim

Jung-hye Mim

Jae-hwan Joo

Provided are methods and apparatuses for encoding and decoding a motion vector.

Method and apparatus for encoding/decoding motion vector

Provided are a method and a device for encoding a video to improve an intra prediction processing speed, and a method and a device for decoding the video. The method for encoding a video performs parallel intra prediction and includes: obtaining, by using pixels of peripheral blocks processed prior to a plurality of adjacent blocks, reference pixels used for intra prediction of each of the plurality of adjacent blocks; performing, by using the obtained reference pixels, intra prediction in parallel for each of the plurality of adjacent blocks; and adding reference pixel syntax information to a bitstream.

Method and device for encoding video to improve intra prediction processing speed, and method and device for decoding video

An image encoding method is provided, in which image data divided into basic blocks is classified in units of groups and subgroups, wherein each group comprises at least one basic block and each subgroup comprises at least one basic block and is included in each group; an encoding mode for a predetermined group is determined in order to encode the predetermined group, wherein the encoding mode represents a mode for encoding data included in the predetermined group in units of one data processing unit selected from a group, a subgroup, and a basic block; and the data of the predetermined group is encoded according to the determined encoding mode. Detailed operations in the image encoding method are performed in consideration of the encoding mode of the group.

Image-encoding method and a device therefor, and image-decoding method and a device therefor

Provided are methods and apparatuses for encoding and decoding a motion vector including a method of decoding that includes obtaining a current coding unit hierarchically split from a maximum coding unit according to a current depth, obtaining a prediction mode information of a current prediction unit in the current coding unit from bitstream, when a prediction mode of the current prediction unit is inter-prediction mode, determining motion vector predictor candidates from among motion vectors of neighboring prediction units adjacent to the current prediction unit, and determining a motion vector predictor of the current prediction unit from among the motion vector predictor candidates, wherein the neighboring prediction unit comprises a first block directly to the left side of a leftmost block among blocks located directly to a bottom side of the current prediction unit and a second block located directly to a upper side of the first block.

Provided are a method and apparatus for encoding a video and a method and apparatus for decoding a video. The method of encoding includes: determining, for a current block, bidirectional motion estimation information comprising an Lmotion vector, an Lmotion vector, an Lreference vector, and an Lreference picture by performing bidirectional motion estimation on the current block; determining whether to use the determined bidirectional motion estimation information as prediction information of the current block based on whether the Lreference picture and the Lreference picture are the same and based on a difference value between the Lmotion vector and the Lmotion vector; and in response to determining to use the determined bidirectional motion estimation information as the prediction information of the current block, encoding the determined bidirectional motion estimation information as the prediction information of the current block.

Method and device for encoding video to limit bidirectional prediction and block merging, and method and device for decoding video

Provided are methods and apparatuses for performing motion estimation encoding and decoding on a video. A method of encoding a video includes splitting a picture by using a maximum coding unit; splitting the maximum coding unit into prediction units, according to a split mode indicating a split form of the maximum coding unit; performing motion estimation on a prediction unit having a size equal to or less than a predetermined size from among the prediction units included in the maximum coding unit, and obtaining a motion vector of the prediction unit having the size equal to or less than the predetermined size; and obtaining a motion vector of a prediction unit having a size greater than the predetermined size, by using the motion vector of the prediction unit having the size equal to or less than the predetermined size.

Methods and apparatuses for encoding and decoding video

A method of determining an offset includes dividing a current image into a plurality of blocks, determining a category of pixels in each of the plurality of blocks based on values of neighboring pixels, determining an offset value for pixels belonging to the category, and adjusting the offset value based on characteristics of the category and a background pixel value of each of the pixels. The offset value is an average of differences between values of original images and restored images of pixels belonging to one category. The background pixel value is an average of values of pixels in a background pixel block to which the pixels belong among background pixel blocks divided to calculate a background pixel value.

Method and apparatus for determining offset values using human visual characteristics

An encoding and decoding method and apparatus are disclosed. whereby, According to the disclosed method, in response to a current frame including a current block being a P frame, a motion vector and an intra-mode-to-inter mode ratio of a frame encoded and decoded previously to the current frame are analyzed in order to determine a temporal search range and a spatial search range of a reference frame.

Method and apparatus for encoding and decoding an image by using an adaptive search range decision for motion estimation

Disclosed is a method of encoding a video, the method including: splitting a current picture into at least one maximum coding unit; determining a coded depth to output a final encoding result according to at least one split region obtained by splitting a region of the maximum coding unit according to depths, by encoding the at least one split region, based on a depth that deepens in proportion to the number of times the region of the maximum coding unit is split; and outputting image data constituting the final encoding result according to the at least one split region, and encoding information about the coded depth and a prediction mode, according to the at least one maximum coding unit.

Method and apparatus for encoding video, and method and apparatus for decoding video

A method and apparatus for encoding a skip macroblock by dividing the skip macroblock into smaller skip sub blocks and using predictive motion vectors predicted from motion vectors of blocks adjacent to the skip sub blocks, and a method and apparatus for decoding the skip macroblock is provided. Accordingly, by adding predetermined binary information indicating whether the skip macroblock is divided to the skip macroblock that generally transmits only prediction mode information, division of the skip macroblock can be adaptively applied, or all skip macroblocks can be divided into sub-blocks to be processed, so that pixel values in the skip macroblock can be predicted by using motion vectors of spatially adjacent blocks. Therefore, prediction efficiency increases.

Method and apparatus for video encoding and decoding

Growing community of inventors

Yongin-si, South Korea

Kyo-hyuk Lee