Patent ID: 9332281
Filing Date: 2016-05-03
CPC Classification: H04N

Claim Text:
1. An image decoding apparatus comprising: an intra-prediction unit configured to: perform intra prediction on a first block based on reference pixels around the first block; perform intra prediction, of the same intra prediction mode as that of the first block, on a second block adjacent to a right side of the first block based on reference pixels around the second block comprising decoded pixels of the first block on which intra prediction is performed; perform intra prediction, of the same intra prediction mode as that of the first block, on a third block adjacent to a bottom of the first block based on reference pixels around the third block comprising at least one decoded pixel of the first and second blocks on which intra prediction is performed; and perform intra prediction, of the same intra prediction mode as that of the first block, on a fourth block adjacent to a right bottom of the first block based on reference pixels around the fourth block comprising at least one decoded pixel of the first to third blocks on which intra prediction is performed, wherein the first block, the second block, the third block, and the fourth block form a prediction block predicted corresponding to one intra prediction mode, and wherein the first block, the second block, the third block, and the fourth block are transform blocks on which intra prediction is performed.