公开(公告)号：US20170230656A1

公开(公告)日：2017-08-10

申请号：US15017286

申请日：2016-02-05

Applicant: APPLE INC.

Inventor： Athanasios Leontaris ,  Ponan Kuo ,  Heon-Mo Koo

IPC: H04N19/117 ,  H04N19/40 ,  H04N19/14 ,  H04N19/593 ,  H04N19/503

Abstract: Systems and methods for improving operation of a video encoding pipeline, which includes a sample adaptive offset block that selects an offset sample from image data corresponding with a coding unit; determines edge offset parameters including a first mapping of an edge classification to an edge offset value and band offset parameters including a second mapping of a band classification to a band offset value based at least in part on analysis of the offset sample; and determines sample adaptive offset parameters based at least in part on a first rate-distortion cost associated with the edge offset parameters and a second rate-distortion cost associated with the band offset parameters. Additionally, a decoding device may apply offsets to decoded image data corresponding with the coding unit based at least in part on the sample adaptive offset parameters.

公开(公告)号：US10728546B2

公开(公告)日：2020-07-28

申请号：US15017286

申请日：2016-02-05

Applicant: APPLE INC.

Inventor： Athanasios Leontaris ,  Ponan Kuo ,  Heon-Mo Koo

IPC: H04N19/117 ,  H04N19/40 ,  H04N19/14 ,  H04N19/593 ,  H04N19/503 ,  H04N19/82 ,  H04N19/176 ,  H04N19/147

Abstract: Systems and methods for improving operation of a video encoding pipeline, which includes a sample adaptive offset block that selects an offset sample from image data corresponding with a coding unit; determines edge offset parameters including a first mapping of an edge classification to an edge offset value and band offset parameters including a second mapping of a band classification to a band offset value based at least in part on analysis of the offset sample; and determines sample adaptive offset parameters based at least in part on a first rate-distortion cost associated with the edge offset parameters and a second rate-distortion cost associated with the band offset parameters. Additionally, a decoding device may apply offsets to decoded image data corresponding with the coding unit based at least in part on the sample adaptive offset parameters.