US 10,855,988 B2 · Adaptive prediction structures

Abstract

Systems, methods, and computer-readable media are described for providing improved video or image encoding, including adaptive prediction structures for encoding video frames. In some examples, systems, methods, and computer-readable media can include obtaining a sequence of frames; determining, based on frame statistics associated with a first frame in the sequence of frames, a prediction structure for encoding the sequence of frames, the prediction structure defining an order in which frames in the sequence of frames are encoded and a prediction distance representing a maximum distance permitted between referencing frames and reference frames in the sequence of frames, and the frame statistics indicating an amount of motion in the first frame. The systems, methods, and computer-readable media can also include encoding one or more of the sequence of frames based on the prediction structure.

Claims30

Dependent claims

A method of encoding frames, the method comprising:

obtaining a sequence of frames at an encoder;
determining frame statistics associated with a first frame in the sequence of frames;
determining, based on the determined frame statistics associated with the first frame in the sequence of frames, to change from a first prediction structure currently being used to a second prediction structure for encoding one or more frames that occur later in coding order in the sequence of frames than the first frame, the second prediction structure defining an order in which frames in the sequence of frames are encoded and a prediction distance representing a maximum distance permitted between any referencing frames and reference frames available for reference by the referencing frames when performing inter-prediction, the prediction distance defined by the second prediction structure being different than a prediction distance defined by the first prediction structure;
and
encoding the one or more frames based on the second prediction structure.

2 more elements

An apparatus for encoding frames, the apparatus comprising:

memory configured to store data;
and
one or more processors configured to:
obtain a sequence of frames;
determine frame statistics associated with a first frame in the sequence of frames;
determine, based on the determined frame statistics associated with the first frame in the sequence of frames, to change from a first prediction structure currently being used to a second prediction structure for encoding one or more frames that occur later in coding order in the sequence of frames than the first frame, the second prediction structure defining an order in which frames in the sequence of frames are encoded and a prediction distance representing a maximum distance permitted between any referencing frames and reference frames available for reference by the referencing frames when performing inter-prediction, the prediction distance defined by the second prediction structure being different than a prediction distance defined by the first prediction structure;
and
encode the one or more frames based on the second prediction structure.

5 more elements

Dependencies are inferred from the claim text.

Adaptive prediction structures

Life of this patent

Adaptive prediction structures

Life of this patent

Abstract

Claims30