Abstract: A method and an apparatus for video coding using a motion vector difference derivation includes parsing one motion vector difference when a motion vector pair is derived during bi-directional inter-prediction of the current block. The video coding method and the apparatus use the parsed one motion vector difference to derive the remaining motion vector difference or to refine the remaining motion vector.

Abstract: A video encoding/decoding apparatus according to the present invention acquires motion vector refinement information, performs motion compensation on the basis of a motion vector of a current block, refines the motion vector of the current block using at least one or both of the motion vector refinement information and the output of the motion compensation, and performs motion compensation using the refined motion vector.

Abstract: A method is disclosed for composing a MPM list in intra prediction. A video coding method and an apparatus derive intra-prediction modes for neighboring blocks that are non-usable for composing a Most Probable Mode list (MPM list) to organize the derived intra-prediction modes into an MPM list. The video coding method and the apparatus organize, based on history-based MPM list composition, the intra-prediction modes of non-adjacent blocks into a MPM list.

Abstract: Provided is an apparatus and method for encoding/decoding a moving picture based on adaptive scanning. The moving picture apparatus and method can increase a compression rate based on adaptive scanning by performing intra prediction onto blocks of a predetermined size, and scanning coefficients acquired from Discrete Cosine Transform (DCT) of a residue signal and quantization differently according to the intra prediction mode. The moving picture encoding apparatus includes: a mode selector for selecting and outputting a prediction mode; a predictor for predicting pixel values of pixels to be encoded of an input video based on the prediction mode to thereby output a residue signal block; a transform/quantization unit for performing DCT onto the residue signal block and quantizing the transformed residue signal block; and an encoder for adaptively scanning and encoding the quantized residue signal block based on the prediction mode.

Abstract: There is provided an image decoding method comprising: deriving a first prediction value of a current block by using at least one sample included in a reference block, obtaining an illumination compensation parameter on the basis of a predetermined reference region, deriving a second prediction value of the current block by applying the illumination compensation parameter to the first prediction value and reconstructing the current block on the basis of the second prediction value.

Abstract: For encoding and decoding images, an image encoding device divides each picture into sub-pictures that can be independently displayed, and signals layout information about the sub-pictures, and an image decoding device identifies each sub-block through the layout information and decodes the sub-pictures. A video decoding apparatus and method are configured to decode a bitstream containing an encoded sequence of pictures which are partitioned into a plurality of subpictures including a plurality of coding tree blocks.

Abstract: A video decoding apparatus is provided for decoding a sequence of pictures, some of which have different resolutions. The apparatus decodes, from a high-level syntax structure of the sequence, a first syntax element for specifying a reference size of pictures referring to the high-level syntax structure and a second syntax element for specifying a picture size scaled from the reference size of the picture referring to the high-level syntax structure. The apparatus predicts a current block, by modifying a sample position in a reference picture indicated by a motion vector of the current block based on the first and second syntax elements.

Abstract: A method and an apparatus are disclosed for video coding using a mapping of residual signals. The video coding method and the apparatus enable the video encoding device to transmit mapping data related to a mapping of the residual signals of the current block to improve video coding efficiency and enhance video quality. The video coding method and the apparatus enable the video decoding device to decode the residual signals based on the mapping data.

Abstract: A method and an apparatus are disclosed for in-loop filtering in mapping-based video coding. A video coding method and an apparatus compensate for variations in signal characteristics between blocks or within a block by using in-loop filtering when original signals or residual signals are mapped in a particular way and then video encoding or video decoding is performed.

Abstract: A method and an apparatus are disclosed for video coding using a candidate list of motion vector predictors. The video coding method and the apparatus compose a candidate list that further includes object corresponding position candidates and large motion candidates. The video coding method and the apparatus reconstruct a motion vector of the current block based on the candidate list.

Abstract: A method and apparatus for video coding utilize a template matching-based secondary MPM list. The video coding method and the apparatus generate a secondary most probable mode (MPM) list according to a gradient-based template matching result and utilize the secondary MPM list for intra prediction of the current block for improving video coding efficiency and enhancing video quality.

Abstract: A method and apparatus for video coding utilize intra prediction based on reference sample line derivation. The video coding method and the apparatus derive reference sample lines of the current block by using various derivation schemes. The video coding method and the apparatus perform intra prediction of the current block by using the derived reference sample lines.

Abstract: The present embodiment, for an intra prediction method used by an intra prediction device, provides the method comprising: decoding, from a bitstream, mode information indicating use of a prediction derivation mode for a prediction mode block; deriving an intra prediction mode of each pixel group from intra prediction modes of pre-reconstructed reference pixels at a plurality of positions near the prediction mode block for each pixel group including one or more pixels in the prediction mode block; and intra-predicting the pixels in each pixel group using the intra prediction mode of each pixel group.

Abstract: Disclosed herein are a video processing method, apparatus and storage medium using the resolution of a reference picture. Filtering is performed based on resolutions of reference pictures of blocks forming a boundary. The resolutions of the reference pictures may define filtering. Depending on whether the resolutions of the reference pictures are different from each other, one or more filter selection parameters for filtering may be determined or updated. Further, based on whether the resolutions of the reference pictures are different from each other, the boundary strength of the filter may be determined. Because filtering is defined using the resolutions of reference pictures, performance of encoding and/or decoding may be improved.

Abstract: A method and apparatus for video coding use implicit arbitrary block partitioning and prediction according to the implicit arbitrary block partitioning. The video coding method and the apparatus implicitly determine partitioned regions of a current block based on information on previously reconstructed neighboring reference regions. The video coding method and the apparatus generate predicted signals of the partitioned regions to improve video coding efficiency and to enhance video quality.

Abstract: A method is executed to efficiently operate a bin buffer to limit a bin-to-bit ratio in entropy encoding and decoding related to bitstream generation and parsing. In addition, a method of configuring a list includes various entropy encoding/decoding methods and adaptively uses the entropy encoding/decoding methods for each basic unit of entropy encoding/decoding.

Abstract: A method is executed to efficiently operate a bin buffer to limit a bin-to-bit ratio in entropy encoding and decoding related to bitstream generation and parsing. In addition, a method of configuring a list includes various entropy encoding/decoding methods and adaptively uses the entropy encoding/decoding methods for each basic unit of entropy encoding/decoding.

Abstract: A method is executed to efficiently operate a bin buffer to limit a bin-to-bit ratio in entropy encoding and decoding related to bitstream generation and parsing. In addition, a method of configuring a list includes various entropy encoding/decoding methods and adaptively uses the entropy encoding/decoding methods for each basic unit of entropy encoding/decoding.

Abstract: A method is executed to efficiently operate a bin buffer to limit a bin-to-bit ratio in entropy encoding and decoding related to bitstream generation and parsing. In addition, a method of configuring a list includes various entropy encoding/decoding methods and adaptively uses the entropy encoding/decoding methods for each basic unit of entropy encoding/decoding.

Abstract: A video decoding method and a video decoding apparatus are configured to decode video. To efficiently code residual blocks obtained from block-based motion compensation, a video encoding apparatus and the video decoding apparatus divide a relevant residual block of a current block into two subblocks in a horizontal or vertical direction and encode one residual subblock alone out of the two residual subblocks.