Patent ID: 11968449
Assignee: ARASHI VISION INC.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 16:
17. The portable terminal according to claim 13, wherein the conducting viewpoint decomposition on the current video frame according to the third rotation matrix, and calculating a fourth rotation matrix specifically comprises:
assuming V to be an original center viewpoint of the current video frame, and conducting smoothing rotation on the current video frame according to the third rotation matrix to obtain a center viewpoint of a smoothed video frame as {tilde over (V)}t={tilde over (q)}t·V;
calculating the fourth rotation matrix according to the position of the center viewpoint of the smoothed video frame and a threshold of a pitch direction of a view angle of camera; wherein
the fourth rotation matrix is a motion matrix obtained after conducting smoothing rotation on the current video frame according to the third rotation matrix.