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US 2022/0312002 A1Published application
Methods and systems for combined lossless and lossy coding
AssigneeOP Solutions, LLC
InventorsHari Kalva, Borivoje Furht, Velibor Adzic
Life of this patent
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Abstract
A decoder includes circuitry configured to receive a bitstream identify, in the bitstream, a current frame, wherein the current frame includes a plurality of regions, detect, in the bitstream, an indication that a first region is encoded according to a lossless encoding protocol and another region is encoded according to a lossy encoding protocol, and decode the current frame, wherein decoding the current frame further comprises decoding the first region using a lossless decoding protocol corresponding to the lossless encoding protocol.
Claims3
A decoder comprising circuitry configured to:
- receive a coded picture;
- detect, using a header in the picture, an independently coded sub-picture, the sub-picture being coded losslessly;
- detect that the remainder of the picture is coded using lossy coding, the lossy coding using at least one of intra-prediction and inter-prediction, discrete cosine transform of residual pixel values, and quantization of transform coefficients.
Dependencies are inferred from the claim text.