METHOD AND APPARATUS FOR ENCODING VIDEO BY USING DEBLOCKING FILTERING, AND METHOD AND APPARATUS FOR DECODING VIDEO BY USING DEBLOCKING FILTERING

摘要

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.

主权项

1. A method of decoding video by using deblocking filtering, the method comprising:
receiving a bitstream including data of a picture, information about a size of a maximum coding unit, and split information; splitting the picture into one or more maximum coding units using the information about the size of the maximum coding unit; hierarchically splitting the maximum coding unit among the one or more maximum coding units into one or more coding units based on the split information; determining one or more prediction units in a coding unit among the one or more coding units using partition type information, wherein the partition type information indicates one of a symmetric type and an asymmetric type; determining one or more transform units in the coding unit using size information of a transform unit, wherein the transform unit among the one or more transform units is rectangular with a horizontal size and a vertical size indicated by the size information; performing prediction on a prediction unit among the one or more prediction units in the coding unit and inverse-transformation on the transform unit in the coding unit, in order to generate a reconstructed coding unit; when a boundary included in the reconstructed coding unit corresponds to at least one of a boundary of the prediction unit and a boundary of the transform unit, determining deblocking filtering method including at least one of a number of filter-taps and location of pixels to be deblocking-filtered, based on at least one of the boundary strength and neighboring pixels adjacent to the boundary included in the reconstructed coding unit; and performing deblocking filtering on the neighboring pixels according to the deblocking filtering method, in order to generate a filtered coding unit including the deblocking-filtered pixels.