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

Claim 11:
12. The computer readable storage medium according to claim 11, wherein calculation of the fourth rotation matrix is specifically as follows:
the threshold of the pitch direction of the view angle of the camera is set as Θ;
if a center viewpoint value of the camera is in the range of the threshold Θ, the fourth rotation matrix is Rt=[{tilde over (V)}t, l, u]T, where l=normize(u×{tilde over (V)}t) and u=normize({tilde over (V)}t×l);
if a center viewpoint direction of the camera is larger than the threshold Θ, a direction of one side of the current video frame keeps invariable, and the side may be an upper side, a lower side, a left side or a right side; and then the fourth rotation matrix Rt is calculated, specifically: if the direction of the left side of the current video frame keeps invariable, the fourth rotation matrix is as follows: Rt=[{tilde over (V)}t,lt,u]T, where lt=normize(ut×{tilde over (V)}t), ut=normize({tilde over (V)}t×lt−1), lt−1=RT:,2 and RT:,2 are a second column of vectors of RT.