Transcoing-based Data Transmission of Sphere Panoramic Videos

Omnidirectional video is a kind of new emerging media. The filed of view of an omnidirectional video can be 360 degrees in vertical and horizontal. The users can navigate interactively through the scene and change their view angel. The scene of an omnidirectional video is often projected on the surface of a sphere or a cylinder to store, which is a panoramic video. Panoramic videos are often high-resolution and consume a significant amount of bandwidth for transmission. To resolve the problem, tiles-based data transmission is applied in some systems but it is not efficient for sphere panoramic video and transmits a mass of redundant bits to the users. In this paper, we proposed an efficient transcoding-based data transmission technique for panoramic videos, which reduced the amount of data transmission at most