Title:
PANORAMIC VIDEO ANTI-SHAKE METHOD AND PORTABLE TERMINAL
Document Type and Number:
WIPO Patent Application WO/2020/125132
Kind Code:
A1
Abstract:
The present invention is applicable to the field of videos. Provided are a panoramic video anti-shake method and a portable terminal. The method comprises: acquiring world coordinates of any reference point in a world coordinate system in real time, and also acquiring the corresponding camera coordinates of the reference point in the portable terminal and an angular velocity value of a gyroscope at a current state in the portable terminal; smoothing the motion of a camera by using an extended Kalman filter; decomposing the smoothed motion, synthesizing the motion into a virtual lens motion in an ePTZ mode, and calculating a rotation amount of the virtual lens; and re-projecting an original video according to the rotation amount of the virtual lens and a rotation matrix for converting from the camera coordinates to the world coordinates, so as to generate a stable video. According to the present invention, the motion of a camera is decomposed, and the virtual lens motion is synthesized, so that motions in all directions, except for vertical and horizontal directions, can be filtered out, and a stable video is generated.
Inventors:
CHEN CONG (CN)
Application Number:
PCT/CN2019/109483
Publication Date:
June 25, 2020
Filing Date:
September 30, 2019
Export Citation:
Assignee:
ARASHI VISION INC (CN)
International Classes:
H04N5/232
Foreign References:
| CN109561253A | 2019-04-02 | |||
| CN107040694A | 2017-08-11 | |||
| US20160212313A1 | 2016-07-21 | |||
| CN101231456A | 2008-07-30 | |||
| CN108933896A | 2018-12-04 | |||
| US20160301870A1 | 2016-10-13 | |||
| CN107801014A | 2018-03-13 | |||
| CN105208247A | 2015-12-30 |
Other References:
See also references of EP 3886425A4
Attorney, Agent or Firm:
CHINA RANKTOP IP OFFICE (CN)
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