公开(公告)号：US11539947B2

公开(公告)日：2022-12-27

申请号：US16642562

申请日：2018-08-31

Applicant: INTERDIGITAL VC HOLDINGS, INC.

Inventor： Antoine Robert ,  Tangi Poirier ,  Simon Danten

IPC: H04N19/53 ,  H04N19/119 ,  H04N19/176 ,  H04N19/52 ,  H04N19/55

Abstract: Motion information for an internal sub-block of a larger block can be derived for use in encoding or decoding the video block or a coding unit by using the motion information for sub-blocks on the left or top edge of the coding block. The left column of edge sub-blocks and the top row of sub-blocks has motion information, such as motion vectors, derived using such techniques as template matching. The motion vectors of these edge sub-blocks are used in deriving the motion vectors of internal sub-blocks, which leads to better prediction and improved coding efficiency. In another embodiment, other motion information for internal sub-blocks is derived from corresponding information of the edge sub-blocks.

公开(公告)号：US11070838B2

公开(公告)日：2021-07-20

申请号：US16642566

申请日：2018-08-31

Applicant: INTERDIGITAL VC HOLDINGS, INC.

Inventor： Antoine Robert ,  Fabrice Leleannec ,  Simon Danten

IPC: H04N19/52 ,  H04N19/176 ,  H04N19/523

Abstract: Extra precision can be added to motion vectors, such as those obtained using advanced motion vector prediction or frame rate upconversion, to produce improved motion compensation. The increased precision from neighboring blocks are used to provide increased precision to a motion vector for a current block. In various embodiments, the derivation of the increased precision can be found through various methods. In other embodiments, refined motion vectors can be saved for use in subsequent predictions, and a rate distorion optimized selection can be performed for determining whether or not to use the refinement.