Abstract:
The present invention relates to an entropy decoding method and to a decoding apparatus using same. The entropy decoding method according to the present invention comprises: a step of decoding a bin of a syntax element; and a step of acquiring information on the syntax element based on the decoded bin. In the step of decoding the bin, context-based decoding or bypass decoding is performed for each bin of the syntax element.
Abstract:
The present invention relates to the encoding and decoding of image information. According to the present invention, the decoding method comprises the steps of: entropy-decoding received information; performing inter prediction on a current block based on the entropy-decoded information; and restoring images by using the prediction results, wherein, in the inter prediction step, a skip mode or merge mode is applied to the current block and movement information of the current block may be determined based on the movement information of a neighboring block of the current block.
Abstract:
A method for intra prediction comprises determining a first MPM candidate corresponding to a left-side candidate block on the basis of a position of the left-side candidate block adjacent to a left side of a current block; determining a second MPM candidate corresponding to an upper-end candidate block on the basis of a position of the upper-end candidate block adjacent to an upper end of the current block; generating an MPM candidate list including a plurality of MPM candidates, on the basis of the first MPM candidate and the second MPM candidate; and determining one MPM candidate of the plurality of the MPM candidates that constitute the MPM candidate list as an intra prediction mode of the current block, and performing intra prediction for the current block on the basis of the determined intra prediction mode to generate a prediction block corresponding to the current block.
Abstract:
The present invention relates to a deblocking filtering method, a method for inducing bs (boundary strength) therefor, and a method and an apparatus for encoding/decoding using the same. The method for inducing the bS of the present invention comprises the steps of: inducing a boundary of a deblocking filtering unit block as a unit block for applying the deblocking filtering; and setting the bS according to each bS setting unit block within the deblocking filtering unit block, wherein the bS setting step can set a bS value for a target boundary corresponding to a boundary of the deblocking filtering unit block as the bs setting unit block.
Abstract:
A transmission device of point cloud data, a method performed by the transmission device, a reception device, and a method performed by the reception device are provided. A method performed by a reception device of point cloud data may comprise obtaining a geometry-based point cloud compression (G-PCC) file including the point cloud data and reconstructing the point cloud based on temporal scalability information. The temporal scalability information may include information about multiple temporal level tracks for the file, and the information about multiple temporal level tracks may be determined based on a sample entry type of a track.
Abstract:
An image decoding method according to the present invention comprises the steps of: acquiring information to form a reference picture set of a current picture by entropy decoding the received bitstream information; and performing prediction on a prediction block inside the current picture by using a reference picture list which is formed based on the reference picture set.
Abstract:
An image decoding method according to the present invention comprises the steps of: acquiring information to form a reference picture set of a current picture by entropy decoding the received bitstream information; and performing prediction on a prediction block inside the current picture by using a reference picture list which is formed based on the reference picture set.
Abstract:
A transmission device of point cloud data, a method performed by the transmission device, a reception device and a method performed by the reception device are provided. A method performed by a reception device of point cloud data may comprise obtaining a geometry-based point cloud compression (G-PCC) file including the point cloud data, obtaining number information on temporal levels present in samples of a track in the G-PCC file from a scalability information box of the G-PCC file, and obtaining first level information on the temporal levels from the scalability information based on the number information. The first level information may be obtained by a number less than a value indicated by the number information.
Abstract:
A video decoding method performed by a video decoding device according to the present document comprises the steps of: acquiring image information from a bitstream, the image information including a picture header associated with the current picture including a plurality of slices; parsing, from the picture header, a first flag indicating whether information necessary for an inter-prediction operation for a decoding process is present in the picture header; parsing, from the picture header, a second flag indicating whether information necessary for an intra-prediction operation for the decoding process is present in the picture header; and generating prediction samples by performing at least one of intra-prediction or inter-prediction for the slices in the current picture on the basis of the first flag or the second flag.
Abstract:
A method for decoding an image by a decoding device, according to the present disclosure, can signal picture partitioning related information on the basis of a flag indicating whether sub-picture information exists and a flag indicating whether subpictures each include a single slice.