Method and Apparatus for Adaptive Region-Based Decoding to Enhance User Experience for 360-degree VR Video

摘要

Methods and apparatus of video decoding for a 360-degree video sequence are disclosed. According to one method, a bitstream comprising compressed data for a previous 360-degree frame and a current 360-degree frame in a 360-degree video sequence is received. A first view region in the previous 360-degree frame associated with a first field of view is determined for a user at a previous frame time. An extended region from the first view region in the current 360-degree frame is determined based on user's viewpoint information. The extended region in the current 360-degree frame is then decoded. A second view region in the current 360-degree frame associated with an actual field of view is rendered for the user at a current frame time.