Use of transformed coefficients to provide embedded signalling for watermarking
AssigneeV-Nova International Limited
InventorsSimone Ferrara, Guido Meardi
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Abstract
Examples described herein relate to decoding and encoding signals. A method of performing signal decoding operations on one or more portions of a signal is presented. The performing is based at least in part on information embedded in one or more values received in one or more encoded data layers transmitted within a stream of encoded data, wherein said values are associated with transformed coefficients intended to be processed by a decoder for deriving elements of the signal, and wherein said information comprises an indication of watermarking information associated with the signal.
Claims18
A method of performing signal decoding operations on one or more portions of a signal,
- wherein the performing is based at least in part on information embedded in one or more values received in one or more encoded data layers transmitted within a stream of encoded data,
- wherein said values are associated with transformed coefficients intended to be processed by a decoder for deriving elements of the signal,
- wherein said information comprises an indication of watermarking information associated with the signal,
- wherein the stream of encoded data is comprised within an encoded bitstream, and
- wherein at least one bit in the encoded bitstream is used to signal to the decoder that one or more values should be interpreted as said information rather than actual quantized values of transformed coefficients.
A method of encoding a signal comprising:
- encoding transformed coefficients for signal reconstruction by reserving one or more quantized symbols of a given coefficient group to provide embedded signaling information for signal decoding operations to be performed on one or more portions of the signal, wherein said information comprises an indication of watermarking information associated with the signal;
- and
- toggling at least one bit in an encoded bitstream for the signal to indicate to the decoder whether a given set of symbols in a given set of residual data is to be interpreted as residual data or as additional embedded signaling information carrying watermarking information.
A decoder configured to:
- perform signal decoding operations on one or more portions of a signal,
- wherein the performing is based at least in part on information embedded in one or more values received in one or more encoded data layers transmitted within a stream of encoded data,
- wherein said values are associated with transformed coefficients intended to be processed by a decoder for deriving elements of the signal,
- wherein said information comprises an indication of watermarking information associated with the signal,
- wherein the stream of encoded data is comprised within an encoded bitstream, and
- wherein at least one bit in the encoded bitstream is used to signal to the decoder that one or more values should be interpreted as said information rather than actual quantized values of transformed coefficients.
An encoder configured to:
- encode transformed coefficients for signal reconstruction by reserving one or more quantized symbols of a given coefficient group to provide embedded signaling information for signal decoding operations to be performed on one or more portions of the signal, wherein said information comprises an indication of watermarking information associated with the signal;
- and
- toggling at least one bit in an encoded bitstream for the signal to indicate to the decoder whether a given set of symbols in a given set of residual data is to be interpreted as residual data or as additional embedded signaling information carrying watermarking information.
Dependencies are inferred from the claim text.