Title:
METHOD AND APPARATUS FOR ESTIMATING ROTATION OF VIDEO, AND ELECTRONIC DEVICE AND STORAGE MEDIUM
Document Type and Number:
WIPO Patent Application WO/2024/051591
Kind Code:
A1
Abstract:
A method and apparatus for estimating the rotation of a video, and an electronic device and a storage medium. The method for estimating the rotation of a video comprises: for each image frame in a video to be processed, and according to a matching relationship between the current image frame and each image frame among K image frames before and after the current image frame, performing calculation to obtain a global rotation initial value of the current image frame and an intrinsic matrix of an image acquisition apparatus (101); according to a matching relationship between the current image frame and each image frame among M image frames before and after the current image frame, performing calculation to obtain a homography matrix between the current image frame and each of the M image frames before and after the current image frame (102); setting a loss function according to the global rotation initial value of the current image frame and the intrinsic matrix of the image acquisition apparatus, and minimizing the loss function by using an optimization method, so as to obtain a final loss function (103); and according to the final loss function and a plurality of homography matrices, performing calculation to obtain a global rotation optimized value of the current image frame (104).
Inventors:
GUO HENGKAI (CN)
WEN JIAWEI (CN)
WEN JIAWEI (CN)
Application Number:
PCT/CN2023/116492
Publication Date:
March 14, 2024
Filing Date:
September 01, 2023
Export Citation:
Assignee:
BEIJING ZITIAO NETWORK TECHNOLOGY CO LTD (CN)
International Classes:
G06T3/60
Foreign References:
| CN115937002A | 2023-04-07 | |||
| CN113744277A | 2021-12-03 | |||
| CN106550174A | 2017-03-29 | |||
| CN109327712A | 2019-02-12 | |||
| US20170178355A1 | 2017-06-22 |
Attorney, Agent or Firm:
BEYOND ATTORNEYS AT LAW (CN)
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