IP Library › Granted Patent US 12,701,246
Granted Patent B2
US 12,701,246 · App. 18/514,161 · Granted Aug 4, 2026

Adaptive resolution change in video processing

Inventors: Mohammed Golam Sarwer (San Mateo, CA); Jiancong Luo (San Mateo, CA); Yan Ye (San Mateo, CA)
Assignee: ALIBABA GROUP HOLDING LIMITED
H04N19/30H04N19/105H04N19/132H04N19/172H04N19/423
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Quick Facts
Patent No.
US 12,701,246
App. No.
18/514,161
Filed
Nov 20, 2023
Granted
Aug 4, 2026
Kind
B2
Art Unit
2425
USPC
375/240.21
Abstract

The present disclosure provides systems and methods for performing adaptive resolution change during video encoding and decoding. The methods include: comparing resolutions of a target picture and a first reference picture; in response to the target picture and the first reference picture having different resolutions, resampling the first reference picture to generate a second reference picture; and encoding or decoding the target picture using the second reference picture.

Claims (27)

1 . A video decoding method, comprising:

determining a coded resolution of a target picture; and

decoding the target picture based on the coded resolution;

wherein determining the coded resolution of the target picture comprises:

decoding a first parameter in a sequence parameter set (SPS), the first parameter indicating a maximum resolution of a video sequence associated with the SPS;

decoding a first flag indicating whether the coded resolution is equal to the maximum resolution; and

decoding a second parameter in a picture parameter set (PPS), the second parameter indicating the coded resolution of the target picture, wherein a value of the second parameter is set to be equal to the maximum resolution when the first flag indicates that the coded resolution is equal to the maximum resolution, and the value of the second parameter is set to be lower than the maximum resolution when the first flag indicates that the coded resolution is different from the maximum resolution.

2 . The method of claim 1 , wherein the second parameter is indicative of at least one of a width or a height of one or more pictures associated with the PPS.

3 . The method of claim 1 , wherein the second parameter is indicative of a difference between the coded resolution and the maximum resolution.

4 . A video encoding method, comprising:

encoding a target picture based on a coded resolution;

encoding a first parameter in a sequence parameter set (SPS), the first parameter indicating a maximum resolution of a video sequence associated with the SPS;

encoding a first flag indicating whether the coded resolution is equal to the maximum resolution; and

encoding a second parameter in a picture parameter set (PPS), the second parameter indicating the coded resolution of the target picture, wherein encoding the second parameter comprises:

in response to the first flag indicating that the coded resolution is equal to the maximum resolution, setting a value of the second parameter to be equal to the maximum resolution, or

in response to the first flag indicating that the coded resolution is different from the maximum resolution, setting the value of the second parameter to be lower than the maximum resolution.

5 . The method of claim 4 , wherein the second parameter is indicative of at least one a width or a height of one or more pictures.

6 . The method of claim 4 , wherein the second parameter is indicative of a difference between the coded resolution and the maximum resolution.

7 . A method of transmitting a bitstream associated with a video sequence, the method comprising:

generating a sequence parameter set (SPS) associated with the video sequence, the SPS comprising a first parameter indicating a maximum resolution of the video sequence;

generating a first flag indicating whether a coded resolution of a target picture is equal to the maximum resolution;

generating a picture parameter set (PPS) associated with the target picture, the PPS comprising a second parameter indicating the coded resolution of the target picture, wherein generating the PPS comprises:

in response to the first flag indicating that the coded resolution is equal to the maximum resolution, setting a value of the second parameter to be equal to the maximum resolution, or

in response to the first flag indicating that the coded resolution is different from the maximum resolution, setting the value of the second parameter to be lower than the maximum resolution; and

transmitting a bitstream comprising the generated SPS, PPS, and first flag.

8 . The method of claim 7 , wherein the second parameter is indicative of at least one a width or a height of one or more pictures.

9 . The method of claim 7 , wherein the second parameter is indicative of a difference between the coded resolution and the maximum resolution.

Assignments (3)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 4, 2026
From: ALIBABA INNOVATION PRIVATE LIMITED
To: HFI INNOVATION INC.
Reel/Frame 075499/0876 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 12, 2026
From: ALIBABA GROUP HOLDING LIMITED
To: ALIBABA INNOVATION PRIVATE LIMITED
Reel/Frame 074832/0914 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 20, 2023
From: SARWER, MOHAMMED GOLAM; LUO, JIANCONG; YE, YAN
To: ALIBABA GROUP HOLDING LIMITED
Reel/Frame 065619/0806 →
Continuity (5)
Continuation 17537471 · Nov 29, 2021
Continuation 16887103 · May 29, 2020
Provisional Application 62900439 · Sep 13, 2019
Provisional Application 62865927 · Jun 24, 2019
Related Publication 20240089473A1 · Mar 14, 2024
References Cited (52)
US 9071847B2 · Holcomb · 2015 [cited by examiner]
US 20040145501A1 · Hung · 2004 [cited by applicant]
US 20070160153A1 · Sullivan · 2007 [cited by applicant]
US 20080101471A1 · Yin et al. · 2008 [cited by applicant]
US 20080232452A1 · Sullivan et al. · 2008 [cited by applicant]
US 20100150231A1 · Huang · 2010 [cited by applicant]
US 20120314771A1 · Lim · 2012 [cited by examiner]
US 20130107953A1 · Chen et al. · 2013 [cited by applicant]
US 20140146137A1 · Yea et al. · 2014 [cited by applicant]
US 20140269912A1 · Sullivan · 2014 [cited by applicant]
US 20150010062A1 · Gokhale et al. · 2015 [cited by applicant]
US 20150189298A1 · Ye et al. · 2015 [cited by applicant]
US 20150264404A1 · Hannuksela · 2015 [cited by applicant]
US 20150350726A1 · Tan · 2015 [cited by applicant]
US 20160165260A1 · Lee · 2016 [cited by applicant]
US 20170041615A1 · Lee et al. · 2017 [cited by applicant]
US 20170310972A1 · Wang · 2017 [cited by applicant]
US 20180262753A1 · Sugio et al. · 2018 [cited by applicant]
US 20180288417A1 · Jung et al. · 2018 [cited by applicant]
US 20190037223A1 · Chang · 2019 [cited by examiner]
US 20190297339A1 · Hannuksela · 2019 [cited by applicant]
US 20200213605A1 · Wenger · 2020 [cited by examiner]
US 20200382792A1 · Gao · 2020 [cited by examiner]
US 20230057302A1 · Lim · 2023 [cited by examiner]
CN 104104957A · 2014 [cited by applicant]
JP 2022531965A · 2022 [cited by applicant]
WO 2017158236A2 · 2017 [cited by applicant]
WO WO2018002425A2 · 2018 [cited by applicant]
WO WO2018178507A1 · 2018 [cited by applicant]
WO 2020228660A1 · 2020 [cited by applicant]
First Office Action issued in corresponding Chinese Application No. 202080046836.9 on Nov. 29, 2024, (19 pages). [cited by applicant]
Wenger et al., “[AHG19] On Signaling of Adaptive Resolution Change,” JVET-N0052, 14th Meeting: Geneva, CH Mar. 19-27, 2019, 11 pages. [cited by applicant]
PCT International Search Report and Written Opinion mailed Aug. 27, 2020, issued in corresponding International Application No. PCT/US2020/035079 (12 pgs.). [cited by applicant]
Sullivan et al., “Overview of the High Efficiency Video Coding (HEVC) Standard,” IEE Transactions on Circuits and Systems for Video Technology, vol. 22, No. 12, pp. 1649-1668 (2012). [cited by applicant]
Ohm et al., “High Efficiency Video Coding: The Next Frontier in Video Compression,” IEEE Signal Processing Magazine, pp. 152-158 (2013). [cited by applicant]
“Requirements for a Future Video Coding Standard v5,” International Organisation for Standardisation, 13 pages (2017). [cited by applicant]
Dong et al., “Downsampling filters for anchor generation for scalable extensions of HEVC,” International Organisation for Standardisation, Interdigital Communications, LLC, 4 pages (2012). [cited by applicant]
Chen et al., “AHG8: Integrated Specification Text for Reference Picture Resampling,” JVET-O1164, 15 [cited by applicant]
Chen et al., “Algorithm description for Versatile Vide Coding and Test Model 5 (VTM 5),” JVET-N1002-v2, 14 [cited by applicant]
Chen et al., “AHG 19: Adaptive Resolution Change,” JVET-N0279, 14th Meeting: Geneva, CH, 6 pages (2019). [cited by applicant]
Chen et al., “Algorithm Description of Joint Exploration Test Model 7 (JEM 7),” JVET-G1001-v1, 7 [cited by applicant]
European Patent Office Communication issued for Application No. 20833197.5 which encloses the extended European Search Report which includes pursuant to Rule 62 EPC, the Supplementary European Search Report (Art. 153(7)… [cited by applicant]
Luo, “Description of Core Experiment 1 (CE1): reference picture resampling filters,” JVET-O2021-v2, 15 [cited by applicant]
Samuelsson et al., “AHG8: Adaptive Resolution Change (ARC) with downsampling,” JVET-O0240-v1, 15 [cited by applicant]
Japanese Office Action issued in corresponding Japanese Application No. 2021-570430 on May 30, 2024 (10 pages). [cited by applicant]
Japanese Search Report issued in corresponding Japanese Application No. 2021-570430 on May 31, 2024 (53 pages). [cited by applicant]
Hendry et al., “AGH19: Adaptive resolution change (ARC) supports in VVC,” JVET-N0118-v3, 14th meeting: Geneva, CH, Mar. 19-27, 2019, 9 pages. [cited by applicant]
Luo et al., “CE-related: Reference picture resampling filters,” JVET-P0353-v5, 16th Meeting: Geneva, CH, Oct. 1-11, 2019, 8 pages. [cited by applicant]
Sarwer et al., “AHG 8: Common test conditions for adaptive resolution change,” JVET-O0641-v2, 15th Meeting: Gothenburg, SE, Jul. 3-12, 2019, 7 pages. [cited by applicant]
Seungwook et al., “AHG19: Adaptive resolution change (ARC) support in VVC,” JVET-N0118-v3, 14th Meeting: Geneva, CH, Mar. 19-27, 2019, 8 pages. [cited by applicant]
Kessentini et al., “DSP-Based Down-Sampling Process Using Lanczos Filter Bank,” 1st International Conference on Advanced Technologies for Signal and Image Processing, IEEE, 5 pages, 2014. [cited by applicant]
Takaaki et al., “The used image resolution transformation method,” Institute of Image Electronics Engineers of Japan 2001. (Translation of abstract only). [cited by applicant]