Patent SG-11201907531X-A (SG)
Title: Constraining motion vector information derived by decoder-side motion vector derivation
Inventor: KARCZEWICZ MARTA
IPC: H04N19/577
Filed: 2018-03-22
Abstract: ON N N O N O (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 27 September 2018 (27.09.2018) WIP0 I PCT D IV o VIVID IID 1001111010110 X1101 Hs (10) International Publication Number WO 2018/175720 Al (51) International Patent Classification: HO4N 19/577 (2014.01) (21) International Application Number: PCT/US2018/023761 (22) International Filing Date: 22 March 2018 (22.03.2018) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 62/475,177 22 March 2017 (22.03.2017) US 15/927,854 21 March 2018 (21.03.2018) US (71) Applicant: QUALCOMM INCORPORATED [US/US]; ATTN: International IP Administration, 5775 Morehouse Drive, San Diego, California 92121-1714 (US). (72) Inventors: KARCZEWICZ, Marta; 5775 Morehouse Drive, San Diego, California 92121-1714 (US). CHEN, Yi-Wen; 5775 Morehouse Drive, San Diego, California 92121-1714 (US). CHIEN, Wei-Jung; 5775 Morehouse Drive, San Diego, California 92121-1714 (US). CHUANG, Hsiao-Chiang; 5775 Morehouse Drive, San Diego, Califor- nia 92121-1714 (US). LI, Xiang; 10574 Gaylemont Lane, San Diego, California 92130 (US). CHEN, Jianle; 10756 Corte De Tiburon, San Diego, California 92130 (US). (74) Agent: HARDOON, David; Shumaker & Sieffert, P.A., 1625 Radio Drive, Suite 100, Woodbury, Minnesota 55125 (US). (81) Designated States (unless otherwise indicated, for every kind of national protection available): AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. (54) Title: CONSTRAINING MOTION VECTOR INFORMATION DERIVED BY DECODER-SIDE MOTION VECTOR DERI- VATION GENERATE A PLURALITY OF DERIVED MOTION VECTORS USING DMVD L100 SELECT A FIRST DERIVED MOTION VECTOR AND A SECOND 102 DERIVED MOTION VECTOR FROM THE PLURALITY OF DERIVED MOTION VECTORS BASED ON A COST METRIC AND DETERMINING WHETHER A CONSTRAINT IS MET DECODE A CURRENT BLOCK USING THE SELECTED FIRST 104 DERIVED MOTION VECTOR AND THE SECOND DERIVED MOTION VECTOR FIG. 16 (57) : Techniques related to decoder-side motion vector derivation (DMVD) are described. For example, this disclosure de- scribes techniques related to applying one or more constraints to motion information, such as a motion vector (MV) derived by DMVD, and/or a MV difference between an initial MV and an MV derived by DMVD. When the constraint is applied to the DMVD, in certain examples, only the derived motion information which meets the constraint is regarded as valid motion information. Conditions may be placed on the constraints. [Continued on next page] WO 2018/175720 Al IMEDIMOMMIDIMANOMOMEIHOMMOVOIMIE (84) Designated States (unless otherwise indicated, for every kind of regional protection available): ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG). Published: — with international search report (Art. 21(3))