Abstract:
Provided is a method of decoding an image, the method including: determining at least one coding unit for splitting an image, based on block shape information of a current coding unit; determining at least one transformation unit, based on a shape of the current coding unit included in the at least one coding unit; and decoding the image by performing inverse transformation based on the at least one transformation unit, wherein the block shape information indicates whether the current coding unit is a square shape or a non-square shape. Also, provided is an encoding method corresponding to the decoding method. In addition, provided is an encoding apparatus or decoding apparatus capable of performing the encoding or decoding method.
Abstract:
Provided is a video decoding method including determining a data unit for intra prediction from a video picture; obtaining, from a bitstream, intra prediction type information indicating whether to predict the data unit according to a first intra prediction type that predicts using predetermined prediction information or a second intra prediction type that predicts using data units adjacent to the data unit; determining a first data unit predicted according to the first intra prediction type and a second data unit predicted according to the second intra prediction type, based on the intra prediction type information obtained from the bitstream; generating a first prediction value with respect to the first data unit predicted according to the first intra prediction type by using the predetermined prediction information; and generating a second prediction value with respect to the second data unit predicted according to the second intra prediction type by using the data units adjacent to the data unit.
Abstract:
A method for decoding an image including performing intra prediction on a chrominance block according to whether the intra prediction mode of the chrominance block is equal to an intra prediction mode of a luminance block.
Abstract:
A mobile terminal includes a communicator configured to communicate with wearable devices; a memory configured to store capability information indicating capabilities of the wearable devices; and a processor configured to determine a first wearable device and a second wearable device among the wearable devices capable of executing a function of the mobile terminal, based on the capability information, the first wearable device being configured to perform a first sub-function for executing the function of the mobile terminal, the second wearable device being configured to perform a second sub-function to be executed together with the first sub-function to execute the function of the mobile terminal, the processor being configured to control the first wearable device to perform the first sub-function and to control the second wearable device to perform the second sub-function.
Abstract:
A video decoding method and apparatus and a video encoding method and apparatus based on a scanning order of hierarchical data units are provided. The decoding method includes: receiving and parsing a bitstream of an encoded video; extracting from the bitstream information about a size of a maximum coding unit for decoding a picture of the encoded video, and encoding information about a coded depth and an encoding mode for coding units of the picture, wherein the size of the maximum coding unit is a maximum size of a coding unit which is a data unit for decoding the picture; and determining a hierarchical structure of the maximum coding unit and the coding units into which the picture is divided according to depths, and decoding the picture based on the coding units, by using the information about the size of the maximum coding unit and the encoding information about the coded depth and the encoded mode.
Abstract:
Provided is an image encoding method including determining at least one sample value related to a first block, based on sample values of previously-reconstructed reference samples; determining at least one pattern in which samples of the first block are to be arranged; generating one or more candidate prediction blocks for the first block, based on the at least one sample value and the at least one pattern; and determining prediction values of the samples of the first block, based on one of the one or more candidate prediction blocks.
Abstract:
Provided are a method of controlling a wearable device and a wearable device. The method of controlling the wearable device includes: determining whether a sensor provided in the wearable device is in an activated state; controlling an adherency controller for adjusting adherency between the sensor and a body of a user wearing the wearable device based on whether the sensor is in the activated state; and detecting a biosignal via the sensor.
Abstract:
A method and apparatus for encoding video by using deblocking filtering, and a method and apparatus for decoding video by using deblocking filtering are provided. The method of encoding video includes: splitting a picture into a maximum coding unit; determining coding units of coded depths and encoding modes for the coding units of the maximum coding unit by prediction encoding the coding units of the maximum coding unit based on at least one prediction unit and transforming the coding units based on at least one transformation unit, wherein the maximum coding unit is hierarchically split into the coding units as a depth deepens, and the coded depths are depths where the maximum coding unit is encoded in the coding units; and performing deblocking filtering on video data being inversely transformed into a spatial domain in the coding units, in consideration of the encoding modes.
Abstract:
Provided are a method and apparatus for determining a context model for entropy encoding and decoding of a transformation coefficient. According to the method and apparatus, a context set index ctxset is obtained based on color component information of a transformation unit, a location of a current subset, and whether there is a significant transformation coefficient having a value greater than a first critical value in a previous subset, and a context offset c1 is obtained based on a length of a previous transformation coefficient having consecutive 1s. Also, a context index ctxids for entropy encoding and decoding of a first critical value flag is determined based on the obtained context set index and the context offset.
Abstract:
A decoding apparatus for decoding an image by obtaining transformation coefficients of a sub residual block based on location information of a non-zero transformation coefficient and level information of the non-zero transformation coefficient obtained from the bitstream.