公开(公告)号：US12015801B2

公开(公告)日：2024-06-18

申请号：US17589641

申请日：2022-01-31

Applicant: Apple Inc.

Inventor： Sorin C Cismas ,  Ganesh G Yadav

IPC: H04N19/70 ,  H04N19/174 ,  H04N19/184 ,  H04N19/186

CPC classification number: H04N19/70 ,  H04N19/174 ,  H04N19/184 ,  H04N19/186

Abstract: This disclosure is directed to systems and methods of streaming extensions for video encoding. The streaming extensions may enable the bitstream syntax for layered video data to be modified to reduce overhead for encoding. The bitstream syntax may be modified to enable variable length luma and chroma components, and enable the alignment between the layers and slice to be bit aligned to enable increased granularity in image encoding, and to minimize overhead between different elements within the layers.

公开(公告)号：US12015799B2

公开(公告)日：2024-06-18

申请号：US17589589

申请日：2022-01-31

Applicant: Apple Inc.

Inventor： Sorin C Cismas ,  Ganesh G Yadav

IPC: H04N19/66 ,  H04L65/65 ,  H04L65/70 ,  H04N19/174 ,  H04N19/186

CPC classification number: H04N19/66 ,  H04L65/65 ,  H04L65/70 ,  H04N19/174 ,  H04N19/186

Abstract: This disclosure is directed to systems and methods of data partitioning in image encoding. A video encoder may receive a single stream of video data that includes multiple layers. The video encoder may encode the one or more layers utilizing multiple counters for each component within the layers. The multiple counters may correspond to the header bits, luma bits, and chroma bits within each slice layer. The encoded layers may then be assembled into a single slice before it is sent to a decoder for decoding of image frame.

公开(公告)号：US11871003B2

公开(公告)日：2024-01-09

申请号：US17589642

申请日：2022-01-31

Applicant: Apple Inc.

Inventor： Sorin C Cismas ,  Ganesh G Yadav

IPC: H04N19/14 ,  H04N19/174 ,  H04N19/186 ,  H04N19/149 ,  H04N19/30

CPC classification number: H04N19/149 ,  H04N19/14 ,  H04N19/174 ,  H04N19/186 ,  H04N19/30

Abstract: This disclosure is directed to systems and methods of rate control in multiple pass video encoding. The video encoder may complete multiple encoding passes for slices of an image. Rate control algorithms may be implemented that scale the quantization step size and quantization matrix values depending on the determined size of the image slices. This may enable the size of slices to be adjusted based on size parameters for the image data.