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US 12,192,441 B2Granted
Methods and systems of video coding using reference regions
AssigneeOP Solutions, LLC
InventorsHari Kalva, Borivoje Furht, Velibor Adzic
Life of this patent
Estimating the term…
Abstract
A decoder includes circuitry configured to receive a bitstream, identify a first frame, locate a first independent reference region within the first frame, extract the first independent reference region from the first frame, decode a second frame using the first independent reference region as a reference for the second frame.
Claims11
A decoder, the decoder configured to:
- receive a bitstream including a signaling information, and a first coded picture, at least a portion of the signaling information being associated with the first coded picture;
- detect in the signaling information associated with the first coded picture, that an independent sub-picture is present in the first coded picture and a location of the coded sub-picture in the first coded picture;
- extract from the first coded picture, and decode, the coded sub-picture to form a rectangular reference picture having a first resolution;
- determine a predictor in the reference picture using a scaling constant obtained from information in the bitstream;
- and
- use the predictor to decode a subsequent picture having a second resolution.
3 more elements
An encoder for encoding a bitstream to be decoded by a compliant decoder, the bitstream comprising a sequence parameter set, a first coded picture, and a subsequent coded picture, the decoder being configured to:
- receive the bitstream;
- detect in the sequence parameter set associated with the first coded picture, that an independent sub-picture is present in the first coded picture and a location of the coded sub-picture in the first coded picture;
- extract from the first coded picture, and decode, the coded sub-picture to form a reference picture;
- determine a predictor in the reference picture using a scaling constant obtained from information in the bitstream, the information including an index;
- and
- use the predictor to decode a subsequent picture.
3 more elements
Dependencies are inferred from the claim text.