US 12,262,011 B2
Image encoding/decoding method, apparatus and method for transmitting bitstream using maximum transform size setting of chroma block
Ling Li, Seoul (KR); and Jung Hak Nam, Seoul (KR)
Assigned to LG ELECTRONICS INC., Seoul (KR)
Filed by LG ELECTRONICS INC., Seoul (KR)
Filed on Apr. 25, 2024, as Appl. No. 18/646,405.
Application 18/646,405 is a continuation of application No. 18/209,665, filed on Jun. 14, 2023, granted, now 12,003,721.
Application 18/209,665 is a continuation of application No. 17/991,134, filed on Nov. 21, 2022, granted, now 11,770,529, issued on Sep. 26, 2023.
Application 17/991,134 is a continuation of application No. 17/562,315, filed on Dec. 27, 2021, granted, now 11,563,942, issued on Jan. 24, 2023.
Application 17/562,315 is a continuation of application No. PCT/KR2020/008234, filed on Jun. 24, 2020.
Claims priority of provisional application 62/865,949, filed on Jun. 24, 2019.
Prior Publication US 2024/0373004 A1, Nov. 7, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H04N 19/119 (2014.01); H04N 19/132 (2014.01); H04N 19/159 (2014.01); H04N 19/176 (2014.01); H04N 19/186 (2014.01)
CPC H04N 19/119 (2014.11) [H04N 19/132 (2014.11); H04N 19/159 (2014.11); H04N 19/176 (2014.11); H04N 19/186 (2014.11)] 14 Claims
OG exemplary drawing
 
1. An image decoding method performed by an image decoding apparatus comprising a memory and at least one processor, the image decoding method comprising:
(a) obtaining (S3010), by the processor, a current block by splitting an image;
(b) determining (S3020), by the processor, a prediction mode of the current block;
(c) generating (S3030), by the processor, an intra prediction block of the current block, based on the prediction mode of the current block being an intra prediction mode;
(d) generating (S3040), by the processor, a residual block of the current block; and
(e) reconstructing (S3050), by the processor, the current block based on the prediction block and the residual block of the current block,
characterized in that the intra prediction block and the residual block are generated based on a size of a transform block of the current block,
the size of the transform block is determined based on a color component of the current block,
a maximum size of the transform block is separately determined for each of a width and a height of the transform block,
based on the color component of the current block being a chroma component, the maximum size of the transform block is determined based on a color format of the current block, and
a top-left position of the transform block is determined based on a maximum width and a maximum height of the transform block.