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 including 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: A method of decoding an image, the method includes deriving an intra prediction mode for a current block, decoding at least one original sample that is present in a rightmost column and a bottommost row (a bottom row) of the current block, constructing a reference sample by using the at least one decoded original sample and performing intra prediction on the current block by using the constructed reference sample.

Abstract: 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.

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: An image decoding/encoding apparatus and method are discussed. The image decoding method can include obtaining a coding block by partitioning an image, determining a split type for the coding block based on a size of the coding block, deriving a current coding block split from the coding block based on the split type for the coding block, and reconstructing the current coding block. Information on a maximum block size about binary tree split can be signaled.

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 5 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, 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: The present invention relates to an image encoding/decoding method. The image decoding method includes splitting a coding tree unit (CTU) into at least one coding unit (CU) according to a block splitting structure and performing CU-based decoding, in which the block partition structure is configured such that at least one of binary tree splitting and ternary tree splitting is performed after quadtree splitting is performed.

Abstract: 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.

Abstract: An image decoding/encoding method and apparatus are discussed. The image decoding method can include deriving a first merge candidate of a current block based on a top neighboring block of the current block, deriving a second merge candidate of the current block based on a left neighboring block of the current block, and deriving a combined merge candidate of the current block based on a combination of the first merge candidate and the second merge candidate.

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: An image decoding/encoding method and apparatus are discussed. The image decoding method can include obtaining, through a bitstream, image information comprising information on quantized transform coefficient levels, deriving transform coefficients of a current block based on the information on quantized transform coefficient levels, and determining a transform set for a secondary inverse-transform based on an intra prediction mode of the current block.

Abstract: An image decoding/encoding method and apparatus are discussed. The image decoding method can include obtaining, through a bitstream, image information comprising information on quantized transform coefficient levels, deriving transform coefficients of a current block based on the information on quantized transform coefficient levels, and determining a transform set for a secondary inverse-transform based on an intra prediction mode of the current block.

Abstract: An image decoding/encoding method and apparatus are discussed. The image decoding method can include deriving an intra prediction mode of a current chroma block, wherein an inter-color component intra prediction is applied to the current chroma block, deriving luma reference samples of a luma block related to the current chroma block, deriving downsampled luma reference samples based on the luma reference samples, and deriving chroma reference samples for the current chroma block.

Abstract: An image encoding/decoding method and apparatus for performing intra prediction using a plurality of reference sample lines are provided. The image decoding method can include deriving an intra prediction mode for a chroma block, deriving reference samples of the chroma block, deriving prediction samples for the chroma block based on the intra prediction mode and the reference samples, performing filtering on the prediction samples, and generating a reconstructed picture based on residual samples for the chroma block and the prediction samples.

Abstract: An image encoding/decoding method and apparatus for performing intra prediction using a plurality of reference sample lines are provided. The image decoding method can include receiving partition information for a coding tree unit and size information, partitioning a split target block in the coding tree unit into a plurality of coding units based on the partition information, and performing intra prediction for each of the plurality of coding units.

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: An image decoding/encoding method and apparatus are discussed. The image decoding method can include determining that an inter-color component intra prediction is applied to a current chroma block, deriving luma neighboring reference samples of a luma block related to the current chroma block, deriving downsampled luma neighboring reference samples based on the luma neighboring reference samples, and deriving chroma neighboring reference samples for the current chroma block.

Abstract: An image decoding/encoding method and apparatus are discussed. The image decoding method can include obtaining information for a collocated picture of a current block, deriving the collocated picture of the current block based on the information for the collocated picture, determining whether a collocated block in the collocated picture is available as a temporal merge candidate of the current block based on a prediction mode of the collocated block, and based on the collocated block being available as the temporal merge candidate, deriving the temporal merge candidate of the current block based on motion information of the collocated block.