公开(公告)号：US11197004B1

公开(公告)日：2021-12-07

申请号：US16919507

申请日：2020-07-02

Applicant: Google LLC

Inventor： Rohit Singh ,  Debargha Mukherjee ,  Elliott Karpilovsky ,  Lester Lu

IPC: H04N19/184 ,  H04N19/124 ,  H04N19/61

Abstract: Transform modes are derived for inter-predicted blocks using side information available within a bitstream. An inter-predicted encoded video block and side information are identified within a bitstream. Based on the side information, a trained transform is determined for inverse transforming transform coefficients of the inter-predicted encoded video block from amongst multiple trained transforms. The transform coefficients of the inter-predicted encoded video block are inverse transformed according to the trained transform to produce a prediction residual. A video block is reconstructed using the prediction residual and the reference frame. The video block is then output within an output video stream for storage or display. To determine the trained transforms, a learning model uses individual side information types and combinations of the individual side information types processed against a training data set.

公开(公告)号：US20220094950A1

公开(公告)日：2022-03-24

申请号：US17543126

申请日：2021-12-06

Applicant: Google LLC

Inventor： Rohit Singh ,  Debargha Mukherjee ,  Elliott Karpilovsky ,  Lester Lu

IPC: H04N19/184 ,  H04N19/124 ,  H04N19/61

Abstract: Transform modes are derived for inter-predicted blocks using side information. A prediction residual is generated for a current video block using a reference frame. Side information associated with one or both of the current video block or the reference frame is identified. A trained transform is determined from amongst multiple trained transforms based on the side information, in which each of the trained transforms is determined using individual side information types and combinations of the individual side information types and the side information represents values of one of the individual side information types or one of the combinations of the individual side information types. The prediction residual is transformed according to the trained transform, and data associated with the transformed prediction residual and the side information are encoded to a bitstream.

公开(公告)号：US12143605B2

公开(公告)日：2024-11-12

申请号：US17543126

申请日：2021-12-06

Applicant: Google LLC

Inventor： Rohit Singh ,  Debargha Mukherjee ,  Elliott Karpilovsky ,  Lester Lu

IPC: H04N19/184 ,  H04N19/124 ,  H04N19/61

Abstract: Transform modes are derived for inter-predicted blocks using side information. A prediction residual is generated for a current video block using a reference frame. Side information associated with one or both of the current video block or the reference frame is identified. A trained transform is determined from amongst multiple trained transforms based on the side information, in which each of the trained transforms is determined using individual side information types and combinations of the individual side information types and the side information represents values of one of the individual side information types or one of the combinations of the individual side information types. The prediction residual is transformed according to the trained transform, and data associated with the transformed prediction residual and the side information are encoded to a bitstream.