Method and apparatus for encoding and decoding video by using pattern information in hierarchical data unit

  • US 10,194,173 B2
  • Filed: 05/29/2018
  • Issued: 01/29/2019
  • Est. Priority Date: 01/14/2010
  • Status: Active Grant
First Claim
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1. A method of encoding a video, the method comprising:

  • generating transformation index information indicating whether a transformation unit of a current level included in a coding unit of a current level is split;

    generating second pattern information indicating whether the transformation unit of the current level contains one or more transform coefficients not equal to 0 when the transformation unit of the current level is not split;

    generating first pattern information indicating whether residual samples of the coding unit of the current level among at least one coding unit split from a maximum coding unit are equal to 0; and

    generating a bitstream based on at least one of the first pattern information, the transformation index information, and the second pattern information,wherein the transformation unit of the current level is split into four transformation units of a lower level,wherein a height of each of the four transformation units of the lower level is half a height of the transformation unit of the current level.

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