Abstract: A method performed by a motion vector encoding apparatus for encoding a motion vector includes: determining a first motion vector and a second motion vector relating to a current block to be encoded; determining predicted motion vectors of the first motion vector and the second motion vector, respectively; calculating a first differential motion vector and a second differential motion vector; the first differential motion vector corresponding to a difference between the first motion vector and the predicted motion vector of the first motion vector, the second differential motion vector corresponding to a difference between the second motion vector and the predicted motion vector of the second motion vector; and encoding the first differential motion vector and the second differential motion vector, wherein the first motion vector and the second motion vector have different resolutions.

Abstract: A video decoding method performed by a video decoding apparatus includes: determining a current block to be decoded, by decoding block size information from a bitstream; decoding a skip information of the current block from the bitstream, the skip information indicating whether the current block is a skip block; when the skip information indicates that the current block is the skip block, decoding a skip motion information of the current block from the bitstream, and reconstructing the current block directly from a predicted block predicted based on the skip motion information, without reconstructing a residual signal information from the bitstream; and when the skip information indicates that the current block is not the skip block, decoding an intra or inter prediction information of the current block and a residual signal information from the bitstream, and reconstructing the current block based on the prediction information and the residual signal information.

Abstract: A video decoding method includes: extracting a merge flag and a merge index from a bitstream; when the merge flag indicates a merge mode, checking for whether predetermined candidate adding conditions are satisfied, and adding into a merge candidate set including the merge candidates corresponding to neighboring blocks of a current block, a combined bi-predictive motion parameter, the combined bi-predictive motion parameter generated by combining a list 0 motion parameter of a first available candidate block and a list 1 motion parameter of a second available candidate block, when the predetermined candidate adding conditions are satisfied; and generating a predicted block of the current block by using a motion parameter corresponding to a merge candidate selected from the merge candidate set, the merge candidate selected by the extracted merge index.

Abstract: A method performed by an apparatus of encoding a video in the unit of blocks, includes: determining a maximum block size to be used for encoding an image; encoding size information for indicating the determined maximum block size; and encoding the image using the determined maximum block size, wherein the size information includes a first information on a minimum block size, and a second information on a difference between the minimum block size and the determined maximum block size.

Abstract: A method performed by an apparatus of decoding a video in the unit of blocks, includes: decoding information on a block size from a bitstream; determining a maximum block size to be used for decoding an encoded image, based on the information on the block size; and reconstructing an image by decoding the encoded image using the determined maximum block size, wherein the information on the block size includes a first information on a minimum block size and a second information on a difference between the minimum block size and the maximum block size.

Abstract: A video encoding method includes: when an inter prediction mode corresponds to a merge mode, checking for whether predetermined candidate adding conditions are satisfied; adding into a merge candidate set including merge candidates corresponding to neighboring blocks of a current block, a combined bi-predictive motion parameter, the combined bi-predictive motion parameter generated by combining a list 0 motion parameter of a first available candidate block and a list 1 motion parameter of a second available candidate block, when the predetermined candidate adding conditions are satisfied; and predicting the current block in the merge mode by using a motion parameter corresponding to a merge candidate selected from the merge candidate set, to generate a predicted block for the current block, wherein the merge candidate set corresponds to a maximum number of the merge candidates, the maximum number of the merge candidates corresponding to information on the number of the merge candidates.

Abstract: A video decoding apparatus includes: a decoder to reconstruct a syntax corresponding to at least one of a first block, a second block and a third block, the first block being generated by dividing a frame for decoding, the second block corresponding to a unit of a prediction and is generated by dividing the first block, and the third block corresponding to a unit of transformation and is generated by dividing the first block in a tree structure; and a predictor to reconstruct a prediction block corresponding to at least one of the first block, the second block and the third block.

Abstract: A video decoding method includes: extracting a merge flag and a merge index from a bitstream; when the merge flag indicates a merge mode, checking for whether predetermined candidate adding conditions are satisfied, and adding into a merge candidate set including the merge candidates corresponding to neighboring blocks of a current block, a combined bi-predictive motion parameter, the combined bi-predictive motion parameter generated by combining a list 0 motion parameter of a first available candidate block and a list 1 motion parameter of a second available candidate block, when the predetermined candidate adding conditions are satisfied; and generating a predicted block of the current block by using a motion parameter corresponding to a merge candidate selected from the merge candidate set, the merge candidate selected by the extracted merge index.

Abstract: A video encoding apparatus includes an inter predictor to check for availability of merge candidates configured from neighboring blocks of a current block, add into a merge candidate set, as one of the merge candidates, a combined bi-predictive motion parameter with respect to an unavailable block, the combined bi-predictive motion parameter generated by combining a list 0 motion parameter of a first available andidate block and a list 1 motion parameter of a second available candidate block, when the unavailable block is checked to be present among the merge candidates, and predict the current block by using a motion parameter corresponding to a merge candidate selected from the merge candidates including the combined bi-predictive motion parameter, to thereby generate a predicted block for the current block.

Abstract: A video encoding apparatus includes an inter predictor to check for whether predetermined candidate adding conditions are satisfied, add into a merge candidate set including merge candidates corresponding to neighboring blocks of a current block, a combined bi-predictive motion parameter, the combined bi-predictive motion parameter generated by combining a list 0 motion parameter of a first available candidate block and a list 1 motion parameter of a second available candidate block, when the predetermined candidate adding conditions are satisfied, and predict the current block by using a motion parameter corresponding to a merge candidate selected from the merge candidate set, to thereby generate a predicted block for the current block. Herein, the merge candidate set corresponds to a maximum number of the merge candidates, the maximum number of the merge candidates corresponding to information on the number of the merge candidates included in a bistream.

Abstract: An apparatus of decoding a video in the unit of blocks, includes: a size setting unit to decode information on a picture size of the video and information on available block sizes from a bitstream, set an initial size of a current block to be decoded to a largest block size determined by the information on the available block sizes, determine a location of the current block within a picture, identify whether the current block is fully located inside the picture, based on the picture size, the size of the current block and the location of the current block, and reset the size of the current block to a smaller size among the available block sizes, when the current block is not fully located inside the picture; and a decoding unit to decode the current block in the reset size.

Abstract: An method of encoding a video in the unit of blocks, includes: encoding information on a picture size of the video and information on available block sizes; setting an initial size of a current block to be encoded to a largest block size among the available block sizes; determining a location of the current block within a picture; identifying whether the current block is fully located inside the picture, based on the picture size, the size of the current block and the location of the current block; resetting the size of the current block to a smaller size among the available block sizes, when the current block is not fully located inside the picture; and encoding the current block in the reset size.

Abstract: The present invention relates to a method and an apparatus for encoding/decoding a video using a split layer. The video encoding/decoding method generates an encoded image data by encoding a current block partitioned into a plurality of subblocks, generates an encoded partition information data by encoding partition information of the current block, generates a bitstream including the encoded image data and the encoded partition information data, and then reconstructs the video image from the generated bitstream. According to the present disclosure, when encoding a high resolution video with variable sized blocks, various block shapes may be used for the encoding, and efficient encoding and decoding of the block partition information can improve the compression efficiency.

Abstract: A video encoding apparatus includes an inter predictor to check for whether predetermined candidate adding conditions are satisfied, add into a merge candidate set including merge candidates corresponding to neighboring blocks of a current block, a combined bi-predictive motion parameter, the combined bi-predictive motion parameter generated by combining a list 0 motion parameter of a first available candidate block and a list 1 motion parameter of a second available candidate block, when the predetermined candidate adding conditions are satisfied, and predict the current block by using a motion parameter corresponding to a merge candidate selected from the merge candidate set, to thereby generate a predicted block for the current block. Herein, the merge candidate set corresponds to a maximum number of the merge candidates, the maximum number of the merge candidates corresponding to information on the number of the merge candidates included in a bistream.

Abstract: A video decoding apparatus includes an encoding information decoder to reconstruct a skip information indicating whether a block to be decoded in an image is a skip block by decoding a bitstream, and reconstruct either a skip motion information of the block, or an intra or inter prediction information of the block and a transform information of the block by decoding the bitstream, according to the skip information; and a video decoder to either reconstruct the block based on the skip motion information or reconstruct the block based on both the prediction information and a residual signal information reconstructed by decoding the bitstream based on the transform information, wherein the encoding information decoder is configured to reconstruct the transform information which includes partition information related to partitioning the block into subblocks by a tree structure.

Abstract: A video encoding apparatus includes a candidate block type configuration unit for configuring block type candidates for encoding an image by using variable sized macroblocks; a video encoder for encoding an input image for each block type candidate; and a block type determiner for determining a block type based on encoding costs by the block type candidate, and generating a bitstream including image data encoded by the determined block type and information for the determined block type. Determining the block type to match the image characteristics enables combinations of diverse modes such as a large block and macroblock size, a minimum subblock size, available divisional block type, prediction mode type within a macroblock, and so on to achieve more effective encoding and decoding of high resolution images.

Abstract: A video encoding apparatus includes: an encoding information encoder to encode a skip information indicating whether a block to be encoded is a skip block, and encode either a skip motion information of the block, or an intra or inter prediction information of the block and a transform information of the block, according to whether the block to be encoded is the skip block, wherein the transform information includes partition information related to partitioning the block into subblocks by a tree structure; and a video encoder to encode a residual signal information of each of the subblocks partitioned from the block.

Abstract: A method performed by an apparatus of decoding a video in the unit of blocks, includes: extracting and decoding a first information corresponding to a minimum block size and a second information corresponding to a difference between the minimum block size and a maximum block size, from a bitstream; calculating the maximum block size based on the first information corresponding to the minimum block size and the second information corresponding to the difference; decoding, from the bitstream, partition information of a square current block having the derived maximum block size to identify one or more subblocks in the current block which have sizes equal to or larger than the minimum block size; decoding a prediction mode information of each of the subblocks, the prediction mode information indicating whether a subblock is inter-predicted or intra-predicted; and reconstructing each of the subblocks in the current block by predicting each of the subblocks.

Abstract: An method of encoding a video in the unit of blocks, includes: encoding information on a picture size of the video and information on available block sizes; setting an initial size of a current block to be encoded to a largest block size among the available block sizes; determining a location of the current block within a picture; identifying whether the current block is fully located inside the picture, based on the picture size, the size of the current block and the location of the current block; resetting the size of the current block to a smaller size among the available block sizes, when the current block is not fully located inside the picture; and encoding the current block in the reset size.

Abstract: An apparatus of decoding a video in the unit of blocks, includes: a size setting unit to decode information on a picture size of the video and information on available block sizes from a bitstream, set an initial size of a current block to be decoded to a largest block size determined by the information on the available block sizes, determine a location of the current block within a picture, identify whether the current block is fully located inside the picture, based on the picture size, the size of the current block and the location of the current block, and reset the size of the current block to a smaller size among the available block sizes, when the current block is not fully located inside the picture; and a decoding unit to decode the current block in the reset size.