Granted Patent B2

US 12,238,281 · App. 18/351,775 · Granted Feb 25, 2025

Inventors: Dong Gyu Sim (Seoul, KR); Ho Chan Ryu (Seoul, KR); Yong Jo Ahn (Seoul, KR)

Assignee: Intellectual Discovery Co., Ltd.

H04N19/11H04N19/105H04N19/107H04N19/117H04N19/124H04N19/13H04N19/176H04N19/513H04N19/593H04N19/615H04N19/635H04N19/82H04N19/91

Abstract

Claims (21)

1. An image decoding method comprising:

obtaining first information specifying whether intra filtering is applied to a current block;

obtaining second information based on the first information specifying that the intra filtering is applied to the current block; and

determining an intra filter used for intra prediction of the current block based on the second information,

wherein prediction samples of the current block are generated by applying the determined intra filter to neighboring samples of the current block.

2. The image decoding method of claim 1 ,

wherein the intra filter is determined based on intra prediction mode of the current block being a DC mode.

3. The image decoding method of claim 1 ,

wherein the intra filter is determined based on a size of the current block.

4. An image encoding method comprising:

determining whether to apply intra filtering to the current block;

determining an intra filter used for intra prediction of the current block based on that the intra filtering is applied to the current block; and

encoding first information specifying whether the intra filtering is applied to the current block and second information specifying the intra filter,

wherein the second information is encoded based on that the intra filtering is applied to the current block, and

wherein prediction samples of the current block are generated by applying the determined intra filter to neighboring samples of the current block.

5. A method of transmitting a bitstream generated by an image encoding method, the image encoding method comprising:

determining whether to apply intra filtering to the current block;

determining an intra filter used for intra prediction of the current block based on that the intra filtering is applied to the current block; and

encoding first information specifying whether the intra filtering is applied to the current block and second information specifying the intra filter,

wherein the second information is encoded based on that the intra filtering is applied to the current block, and

wherein prediction samples of the current block are generated by applying the determined intra filter to neighboring samples of the current block.

Assignments (2)

Priority Claims (3)

Continuity (3)

References Cited (42)