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 first region and a third region, detect, in the bitstream, an indication that the first region is encoded according to a lossless 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.
Claims19
A decoder, the decoder comprising circuitry configured to:
- receive, in a bitstream, a coded picture, the picture comprising
- a first region, a second region, and a third region, wherein the first region is a first independently coded sub-picture, the second region is a second independently coded sub-picture and the third region is the remainder of the picture;
- detect, in the bitstream, that the first region is encoded using block differential pulse code modulation;
- detect, in the bitstream, that the second region is encoded using transform skip mode but not block differential pulse code modulation;
- and
- detect, in the bitstream, that the third region is encoded using lossy encoding, wherein the lossy encoding includes at least one of inter-prediction or intra-prediction, discrete cosine transform of residual pixel values, and quantization of transform coefficients.
A method of combined lossless and lossy decoding, the method comprising:
- receiving, by a decoder comprising circuitry, in a bitstream, a coded picture, the picture comprising
- a first region, a second region, and a third region, wherein the first region is a first independently coded sub-picture, the second region is a second independently coded sub-picture and the third region is the remainder of the picture;
- detecting, by the decoder and in the bitstream, that the first region is encoded using block differential pulse code modulation;
- detecting, by the decoder and in the bitstream, that the second region is encoded using transform skip mode but not block differential pulse code modulation;
- and
- detecting, by the decoder and in the bitstream, that the third region is encoded using lossy encoding, wherein the lossy encoding includes at least one of inter-prediction or intra-prediction, discrete cosine transform of residual pixel values, and quantization of transform coefficients.
A decoder comprising circuitry configured to decode a coded picture received in a bitstream, the coded picture including:
- a first region coded using block differential pulse code modulation (BDPCM),
- a second region coded using transform skip mode but not BDPCM, and
- a third region coded using lossy, wherein lossy coding includes at least one of inter-prediction or intra-prediction, transform of residual pixel values, and quantization of transform coefficients, wherein the first region is a first independently coded-sub-picture, the second region is a second independently coded sub-picture and the third region is the remainder of the picture.
Dependencies are inferred from the claim text.