Method for encoding/decoding block information using quad tree, and device for using same

摘要

Disclosed decoding method of the intra prediction mode comprises the steps of: determining whether an intra prediction mode of a present prediction unit is the same as a first candidate intra prediction mode or as a second candidate intra prediction mode on the basis of 1-bit information; and determining, among said first candidate intra prediction mode and said second candidate intra prediction mode, which candidate intra prediction mode is the same as the intra prediction mode of said present prediction unit on the basis of additional 1-bit information, if the intra prediction mode of the present prediction unit is the same as at least either the first candidate intra prediction mode or the second candidate intra prediction mode, and decoding the intra prediction mode of the present prediction unit.

主权项

1. A video decoding apparatus using a quad tree structure, comprising:
an entropy decoder configured to
decode integrated code block flag information in an coding unit,decode a split information flag based on the integrated code block flag information and size information of a transform unit,decode a code block flag information in the transform unit in response to the transform unit not being additionally split into an additional transform unit based on the split information flag, anddecode transform coefficients in the transform unit; and an inverse transformer configured to inversely transform the transform coefficients received from the entropy decoder, wherein the entropy decoder, after decoding the integrated code block flag information, does not decode the split information flag when the transform coefficients in the transform unit are absent, the entropy decoder determines that the transform unit is not additionally split in response to a value of the split information flag being a predefined valueθ, and decodes flag information indicating whether a Luma component in the transform unit includes a transform coefficient other than 0 into the code block flag information in response to the transform unit not being additionally split based on the split information flag, and the entropy decoder decodes the integrated code block flag when a transform depth of the transform unit is 0 and decodes the split information flag indicating whether the transform unit is additionally split when the transform depth of the transform unit is 0.