Anti-shake method and apparatus for panoramic video, and portable terminal
US11057567B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 16, 2018 |
| Grant date | Jul 6, 2021 |
| Priority date | — |
| Expiry date | Oct 16, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/10016
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention is applicable to the field of videos. Provided are an anti-shake method and apparatus for a panoramic video, and a portable terminal. The method comprises: acquiring, in real time, a current state timestamp, an accelerometer numerical value and an angular velocity numerical value of a gyroscope in a portable terminal; performing estimation using extended Kalman filtering combined with the accelerometer numerical value and the angular velocity numerical value to obtain an amount of rotation of the portable terminal to a world coordinate system; synchronizing the timestamp of the gyroscope with a timestamp of a panoramic video frame; performing quaternion interpolation on the state of the gyroscope to acquire a rotation matrix corresponding to the panoramic video frame; and rotating a panoramic image according to the current rotation matrix to generate a stable video frame.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.