	US 12,192,455 B2
	Image encoding method/device, image decoding method/device and recording medium having bitstream stored thereon
Joo Hee Moon, Seoul (KR); Dong Jae Won, Goyang-si (KR); and Sung Won Lim, Seoul (KR)
Assigned to Industry Academy Cooperation Foundation of Sejong University, Seoul (KR)
Filed by INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY, Seoul (KR)
Filed on Aug. 24, 2023, as Appl. No. 18/455,171.
Application 18/455,171 is a continuation of application No. 17/857,117, filed on Jul. 4, 2022, granted, now 11,778,179.
Application 17/857,117 is a continuation of application No. 16/478,557, granted, now 11,412,218, issued on Aug. 9, 2022, previously published as PCT/KR2018/000731, filed on Jan. 16, 2018.
Claims priority of application No. 10-2017-0009631 (KR), filed on Jan. 20, 2017; and application No. 10-2017-0009632 (KR), filed on Jan. 20, 2017.
Prior Publication US 2024/0015286 A1, Jan. 11, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. G06K 9/36 (2006.01); H04N 19/117 (2014.01); H04N 19/13 (2014.01); H04N 19/176 (2014.01); H04N 19/436 (2014.01); H04N 19/82 (2014.01)

CPC H04N 19/117 (2014.11) [H04N 19/13 (2014.11); H04N 19/176 (2014.11); H04N 19/436 (2014.11); H04N 19/82 (2014.11)]

9 Claims

1. An image decoding method, comprising:

decoding band index information of a current block;

performing first filtering on pixels in the current block, based on the band index information, and

performing in-loop filtering in the current block after the first filtering, wherein the in-loop filtering includes a sample adaptive offset (SAO) mode,

wherein N bands are generated by dividing a range of pixels according to a bit depth,

wherein the band index information comprises first band index information indicating a band including a maximum value of the pixels among the N bands and second band index information indicating a band including a minimum value of the pixels among the N bands, and

wherein the method further comprises, decoding SAO merge information indicating whether SAO information of the current block is derived from SAO information of a neighboring block adjacent to the current block.