US 11,991,372 B2
Method and apparatus for video decoding of area of interest in a bitstream
Jeong-yeon Lim, Seoul (KR); Sun-young Lee, Seoul (KR); Se-hoon Son, Seoul (KR); Jae-seob Shin, Seoul (KR); Hyeong-duck Kim, Suwon-si (KR); Gyeong-taek Lee, Seoul (KR); and Jung-han Kim, Seoul (KR)
Assigned to SK TELECOM CO., LTD., Seoul (KR)
Filed by SK TELECOM CO., LTD., Seoul (KR)
Filed on Oct. 12, 2022, as Appl. No. 17/964,593.
Application 17/964,593 is a continuation of application No. 16/547,013, filed on Aug. 21, 2019, granted, now 11,509,913.
Application 16/547,013 is a continuation of application No. PCT/KR2018/002219, filed on Feb. 22, 2018.
Claims priority of application No. 10-2017-0023802 (KR), filed on Feb. 22, 2017; and application No. 10-2017-0035579 (KR), filed on Mar. 21, 2017.
Prior Publication US 2023/0039998 A1, Feb. 9, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H04N 19/167 (2014.01); H04N 19/119 (2014.01); H04N 19/174 (2014.01); H04N 19/463 (2014.01); H04N 19/597 (2014.01); H04N 19/70 (2014.01)
CPC H04N 19/167 (2014.11) [H04N 19/119 (2014.11); H04N 19/174 (2014.11); H04N 19/463 (2014.11); H04N 19/597 (2014.11); H04N 19/70 (2014.11)] 5 Claims
OG exemplary drawing
 
1. A method of processing, by a processor, a first bitstream in which each of pictures has been encoded with being split into a plurality of tiles, each tile comprised of one or more coding tree units, the first bitstream including encoded pixel data of the pictures and parameters used for encoding the pictures, the method comprising:
receiving the first bitstream which includes tile split information, and area information for specifying a rectangular area which includes at least one tile defined by the tile split information,
wherein the area information is included in a header of the first bitstream, the header being a Sequence Parameter Set containing parameters which are referenced in common by all of the pictures, and
wherein the area information comprises at least one first syntax element for indicating a reference position in the pictures, and second and third syntax elements for respectively indicating a width and a height from the reference position, and allows an area which includes two or more tiles;
generating a second bitstream to be decoded, by:
extracting, from the encoded pixel data of the pictures included in the first bitstream, only encoded pixel data of an area extending by the width and the height indicated by the second and third syntax elements from the reference position indicated by the first syntax element, and
modifying at least part of the parameters in the first bitstream using the reference position, and the width and the height from the reference position included in the area information; and
outputting the second bitstream to thereby decode the extracted encoded pixel data.