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Method, medium, and apparatus encoding and/or decoding an image using the same coding mode across components

  • US 9,877,007 B2
  • Filed: 03/12/2015
  • Issued: 01/23/2018
  • Est. Priority Date: 11/14/2005
  • Status: Active Grant
First Claim
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1. A method of decoding an image, the method comprising:

  • obtaining a predicted direction of a luma component of a current block;

    obtaining a predicted direction of a chroma component corresponding to the predicted direction of the luma component among a plurality of predicted directions according to one of predetermined decoding modes;

    obtaining a predicted block based on the predicted direction of the chroma component;

    obtaining information indicating whether at least one coefficient of which value is non-zero is included in a transform block of a predetermined size;

    obtaining a residue by inverse-transforming the transform block using the information; and

    restoring a current image by using the predicted block and the residue,wherein the predicted direction of the chroma component is identical to the predicted direction of the luma component.

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