(19)

(11)

EP 4 555 491 A1

(12)

(43) Date of publication: 21.05.2025 Bulletin 2025/21 (21) Application number: 23739717.9 (22) Date of filing: 12.06.2023

(51) International Patent Classification (IPC):  G06V 20/40(2022.01) G06V 10/764(2022.01) (52) Cooperative Patent Classification (CPC): G06V 20/41; G06V 10/765 (86) International application number: PCT/US2023/025092 (87) International publication number: WO 2024/015177 (18.01.2024 Gazette 2024/03)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA Designated Validation States: KH MA MD TN (30) Priority: 15.07.2022 US 202263368596 P 14.09.2022 US 202217932217 (71) Applicant: Microsoft Technology Licensing, LLC Redmond, WA 98052-6399 (US)	(72) Inventors: YU, Ye Redmond, Washington 98052-6399 (US) MITTAL, Gaurav Redmond, Washington 98052-6399 (US) CHEN, Mei Redmond, Washington 98052-6399 (US) YUAN, Jialin Redmond, Washington 98052-6399 (US) (74) Representative: CMS Cameron McKenna Nabarro Olswang LLP  Cannon Place 78 Cannon Street London EC4N 6AF London EC4N 6AF (GB)