COMPUTATIONALLY EFFICIENT SAMPLE ADAPTIVE OFFSET FILTERING DURING VIDEO ENCODING

摘要

Disclosed herein are exemplary embodiments of innovations in the area of encoding pictures or portions of pictures (e.g., slices, coding tree units, or coding units) and determining whether and how certain filtering operation should be performed and flagged for performance by the decoder in the bitstream. In particular examples, various implementations for selectively performing and selectively skipping aspects of sample adaptive offset (SAO) filtering as in the H.265/HEVC standard are disclosed. Although these examples concern the H.265/HEVC standard and its SAO filter, the disclosed technology is more widely applicable to other video codecs that involve filtering operations as part of their encoding and decoding processes.

主权项

1. A video encoder system, comprising:
a buffer configured to store pictures of a video sequence to be encoded; and a video encoder configured to encode the pictures of the video sequence by:
encoding a current picture using sample adaptive offset (SAO) filtering;determining that one or more consecutive pictures following the current picture are to be encoded without any evaluation of SAO filtering, the determining being based at least in part on a number of units of the current picture being coded without SAO filtering; andencoding the one or more consecutive pictures according to the determination.