METHOD AND APPARATUS FOR DETERMINING INTRA PREDICTION MODE RELATED TO VIDEO CODING UNIT, AND METHOD AND APPARATUS FOR DETERMINING INTRA PREDICTION MODE RELATED TO VIDEO DECODING UNIT

摘要

PROBLEM TO BE SOLVED: To provide a method and apparatus for determining an intra prediction mode related to a video coding unit and a video decoding unit.SOLUTION: A method for determining an intra prediction mode related to a video decoding unit, includes: a step 2410 of extracting from a coded bit stream a maximum coding unit that is a coding unit having the maximum size and depth information that is hierarchical division information of the maximum coding unit; a step 2420 of dividing a luminance component and a color difference component of a to-be-decoded current picture into decoding units on the basis of the extracted maximum coding unit and the depth; a step 2430 of extracting from the bit stream, intra prediction mode information applied to the divided decoding units of the luminance component and color difference component; and a step 2440 of performing intra prediction related to the decoding units of the luminance component and color difference component by the extracted intra prediction mode, and decoding the decoding units.