公开(公告)号：US20210099507A1

公开(公告)日：2021-04-01

申请号：US16825381

申请日：2020-03-20

Applicant: Apple Inc.

Inventor： Fanyi DUANMU ,  Alexandros TOURAPIS ,  Jun XIN ,  Hsi-Jung WU ,  Xiaosong ZHOU

IPC: H04L29/06 ,  H04N13/344 ,  H04N13/161 ,  H04N13/194 ,  H04N13/111

Abstract: Techniques for multi-view video streaming are described in the present disclosure, wherein a viewport prediction may be employed at a client-end based on analysis of pre-fetched media item data and ancillary information. A streaming method may first prefetch a portion of content of a multi-view media item. The method may next identify a salient region from the prefetched content and may then download additional content of the media item that corresponds to the identified salient region.

公开(公告)号：US20210084332A1

公开(公告)日：2021-03-18

申请号：US16569725

申请日：2019-09-13

Applicant: Apple Inc.

Inventor： Fanyi DUANMU ,  Eduardo ASBUN ,  Xiaosong ZHOU ,  Jun XIN ,  Hsi-Jung WU ,  John SU ,  Samir GEHANI ,  Christopher FLICK ,  Shalini SAHOO

IPC: H04N19/597 ,  H04N19/176 ,  H04N19/187

Abstract: Techniques are disclosed for coding and delivering multi-view video in which the video is represented as a manifest file identifying a plurality of segments of the video available for download. The multi-view video may be partitioned spatially into a plurality of tiles that, in aggregate, encompass the entire spatial area of the video. The tiles are coded as segments contains coded video representing content contained within its respective tile. Tiles may be given different sizes based on saliency of the content within their respective regions. In this manner, tiles with high levels of interest may have relatively large spatial areas, which can lead to efficient coding in the presence of content motion.