Patent SG-11201901631S-A (SG)
Title: Systems and methods of switching interpolation filters
Inventor: LEE SUNGWON
IPC: H04N19/82
Filed: 2017-10-05
Abstract: INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property :::` , MD HIM 0 11101 HOE 3E1 0 101101100 111110 HER NE ill 011 Organization International Bureau (10) International Publication Number 03 (43) International Publication Date ......°' WO 2018/067848 Al 12 April 2018 (12.04.2018) WIP0 1 PCT (51) International Patent Classification: (71) Applicant: QUALCOMM INCORPORATED [US/US]; HO4N 19/159 (2014.01) HO4N 19/136 (2014.01) ATTN: International IP Administration, 5775 Morehouse H04N 19/176 (2014.01) H04N 19/82 (2014.01) Drive, San Diego, California 92121-1714 (US). H04N 19/46 (2014.01) H04N 19/523 (2014.01) (72) Inventors: LEE, Sungwon; 5775 Morehouse Drive, San H04N 19/117 (2014.01) H04N 19/59 (2014.01) Diego, California 92121-1714 (US). CHIEN, Wei-Jung; (21) International Application Number: 5775 Morehouse Drive, San Diego, California 92121-1714 PCT/US2017/055390 (US). ZHANG, Kai; 5775 Morehouse Drive, San Diego, California 92121-1714 (US). CHEN, Jianle; 5775 More- (22) International Filing Date: 05 October 2017 (05.10.2017) house Drive, San Diego, California 92121-1714 (US). KARCZEWICZ, Marta; 5775 Morehouse Drive, San (25) Filing Language: English Diego, California 92121-1714 (US). (26) Publication Language: English (74) Agent: WONG, Claudine Valerie et al.; Kilpatrick Townsend & Stockton LLP, Mailstop: IP Docketing - 22, (30) Priority Data: 1100 Peachtree Street, N.E., Suite 2800, Atlanta, Georgia 62/404,749 05 October 2016 (05.10.2016) US 30309 (US). 15/724,155 03 October 2017 (03.10.2017) US (54) Title: SYSTEMS AND METHODS OF SWITCHING INTERPOLATION FILTERS 410 M 400 1 ,4 Reference * Filter Selection 464 1... Criteria FO 414 F1 412 Th F2 Fl F3 Coding Unit Motion Estimation 402 ► 444 F3 F4 F9 FS F6 ,FI F7 Motion Filter Index Information 408 406 F8 I I 1 r__i F9 H 4' * F10 Bitstream 4) F11 FIG. 4 ,-1 (57) : Systems, methods, and apparatus are provided for adaptively switching interpolation filters during the encoding of video GC data or the decoding of a video bitstream. In various implementations, a set of interpolation filters can be defined and made available to ot coding device. The coding device can select an interpolation filter for a given coding unit. The interpolation filter can be selected based IN on, for example, the coding level of the coding unit, among other things In some examples, signaling of the selected interpolation filter can be simplified by selecting a subset of the set of interpolation filters for a given coding situation. An index indicating an interpolation 0 ---- filter from the subset can then be signaled. Alternatively, a decoder can derive an identity of the interpolation filter from data provided GC by a bitstream, in which case the index need not be explicitly signaled in the bitstream. 1-1 0 ei C [Continued on next page] WO 2018/067848 Al MIDEDIMOMMIDIIMERIONIMOOMMOIEHMEMOIMIE (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. (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)) — before the expiration of the time limit for amending the claims and to be republished in the event of receipt of amendments (Rule 48.2(h))