Abstract: 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.

Abstract: An image encoding/decoding method may comprise deriving at least one merge candidate of a current block, generating an initial merge candidate list of the current block by using the derived at least one merge candidate and generating a reconfigured merge candidate list by using the initial merge candidate list.

Abstract: The present invention relates to an image encoding/decoding method and device. The image decoding method according to the present invention comprises the steps of: decoding a prediction mode index; determining whether the prediction mode index indicates function-based intra prediction; inducing a parameter(s) for generating a function, when the prediction mode index indicates the function-based intra prediction; generating the function on the basis of the induced parameter(s); and performing intra prediction by using the generated function.

Abstract: An image encoding/decoding method and apparatus for performing intra prediction mode based intra prediction are provided. An image decoding method may comprise decoding an intra prediction mode of a current block, deriving at least one intra prediction mode from the decoded intra prediction mode of the current block, generating two or more intra prediction blocks using the intra prediction mode of the current block and the derived intra prediction mode, and generating an intra prediction block of the current block based on the two or more intra prediction blocks.

Abstract: 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).

Abstract: The present invention relates to a method for encoding and decoding an image. For this, a method for decoding an image may include: entropy-decoding a bitstream; determining a scanning unit and a scanning order of the transform coefficients of the current block; scanning and aligning the transform coefficients of the current block based on the determined scanning unit and scanning order; and performing inverse-transform for the aligned transform coefficients.

Abstract: The present invention relates to an image encoding/decoding method and apparatus. An image encoding method according to the present invention may comprise generating a transform block by performing at least one of transform and quantization; grouping at least one coefficient included in the transform block into at least one coefficient group (CG); scanning at least one coefficient included in the coefficient group; and encoding the at least one coefficient.

Abstract: An image decoding method performed by a decoding apparatus, an image encoding method performed by an encoding apparatus, and a transmission method for image data are discussed. The image decoding method can include obtaining image information comprising information related to motion compensation from a bitstream, deriving merge candidates of a current block, generating a merge candidate list of the current block based on the derived merge candidates, determining motion information of the current block based on the merge candidate list, and generating a predicted block of the current block based on the motion information of the current block. The information related to the motion compensation includes motion vector resolution information. The motion vector resolution information indicates a specific motion vector resolution among motion vector resolution candidates including an integer pel resolution, a ¼ pel resolution and a 1/16 pel resolution.

Abstract: An image decoding method performed by a decoding apparatus, an image encoding method performed by an encoding apparatus, and a transmission method for image data are discussed. The image decoding method can include obtaining image information comprising information related to motion compensation from a bitstream, deriving merge candidates of a current block, generating a merge candidate list of the current block based on the derived merge candidates, determining motion information of the current block based on the merge candidate list, and generating a predicted block of the current block based on the motion information of the current block. The information related to the motion compensation includes motion vector resolution information. The motion vector resolution information indicates a specific motion vector resolution among motion vector resolution candidates including an integer pel resolution, a ¼ pel resolution and a 1/16 pel resolution.

Abstract: The present invention relates to an image encoding method and an image decoding method. The image decoding method includes partitioning a picture into a plurality of coding units, constructing a coding unit group including at least one coding unit of the plurality of coding units, obtaining coding information in units of one coding unit group, and decoding at least one coding unit of the plurality of coding units included in the coding unit group by using the obtained coding information.

Abstract: An image decoding method performed by a decoding apparatus, an image encoding method performed by an encoding apparatus, and a transmission method for image data are discussed. The image decoding method can include obtaining image information comprising information related to motion compensation from a bitstream, deriving merge candidates of a current block, generating a merge candidate list of the current block based on the derived merge candidates, determining motion information of the current block based on the merge candidate list, and generating a predicted block of the current block based on the motion information of the current block. The information related to the motion compensation includes motion vector resolution information, and the motion vector resolution information indicates a specific motion vector resolution among motion vector resolution candidates including an integer pel resolution, a ¼ pel resolution and a 1/16 pel resolution.

Abstract: An image decoding method performed by a decoding apparatus, an image encoding method performed by an encoding apparatus, and a transmission method for image data are discussed. The image decoding method can include obtaining image information comprising information related to motion compensation from a bitstream, deriving merge candidates of a current block, generating a merge candidate list of the current block based on the derived merge candidates, determining motion information of the current block based on the merge candidate list, and generating a predicted block of the current block based on the motion information of the current block. The information related to the motion compensation includes motion vector resolution information.

Abstract: An image decoding method performed by a decoding apparatus, an image encoding method performed by an image encoding apparatus, and a transmission method for image data are discussed. The image decoding method can include obtaining a coding block by partitioning an image, determining a size of the coding block, determining a split type for the coding block based on the size of the coding block, deriving a current block split from the coding block based on the split type for the coding block, and reconstructing the current block. Based on that the size of the coding block is equal to or greater than a first size, the split type for the coding block is implicitly determined as that the coding block is split into four equal-sized subblocks.

Abstract: An image encoding/decoding method and apparatus for performing intra prediction using a plurality of reference sample lines are provided. An image decoding method may comprise configuring a plurality of reference sample lines, reconstructing an intra prediction mode of a current block, and performing intra prediction for the current block based on the intra prediction mode and the plurality of reference sample lines.

Abstract: 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.

Abstract: The present invention relates to a video encoding/decoding method and apparatus. The video decoding method according to the present invention may comprise decoding filter information on a coding unit; classifying samples in the coding unit into classes on a per block classification unit basis; and filtering the coding unit having the samples classified into the classes on a per block classification unit basis by using the filter information.

Abstract: The present invention relates to a video encoding/decoding method and apparatus. The video decoding method according to the present invention may comprise dividing a coding unit into a plurality of sub-units according to a block division structure and performing decoding based on the sub-unit, wherein the block division structure is a block division structure in which division is performed so as to include at least one sub-unit having a predetermined block form other than square and rectangle forms.

Abstract: An image encoding/decoding method and apparatus for performing intra prediction are provided. An image decoding method of the present invention comprises deriving an intra-prediction mode for a current block, determining whether or not a left boundary or an upper boundary of the current block is a boundary of a predetermined image region, configuring a reference sample by using at least one reconstructed sample included in at least one reconstructed sample line adjacent to the current block based on the determination result, and performing intra-prediction for the current block based on the intra-prediction mode and the reference sample.

Abstract: An image encoding/decoding method and apparatus are provided. An image encoding method performed by an image encoding apparatus may comprise determining an intra-prediction mode of a current block, configuring a reference sample of intra prediction by using at least one of a neighbor pixel of the current block in a current picture and a pixel of a reference picture, and performing intra prediction for the current block based on the intra-prediction mode and the reference sample.

Abstract: An image encoding/decoding method and apparatus for performing intra prediction are provided. An image decoding method of the present invention comprises deriving an intra prediction mode for a current block, selecting at least one reconstructed sample line neighboring to the current block, constructing a reference sample using at least one reconstructed sample included in the at least one reconstructed sample line, and performing intra prediction for the current block based on the intra prediction mode and the reference sample.