Use of embedded signalling for backward-compatible scalilng improvements and super-resolution signalling

A method of decoding a signal, comprising:

• obtaining an encoded data stream, the encoded data stream being encoded by an encoder according to a tier-based hierarchical format;
• parsing the encoded data stream to determine signal processing information signalled by the encoder;
• and
• reconstructing a higher resolution tier of the signal from a lower resolution tier of the signal, including selectively performing one or more signal processing operations to enhance the higher resolution tier based on the determined signal processing information.

A decoder configured to:

• obtain an encoded data stream, the encoded data stream being encoded by an encoder according to a tier-based hierarchical format;
• parse the encoded data stream to determine signal processing information signalled by the encoder;
• and
• reconstruct a higher resolution tier of the signal from a lower resolution tier of the signal, including selectively performing one or more signal processing operations to enhance the higher resolution tier based on the determined signal processing information.

A method of encoding a signal, comprising:

• encoding a lower resolution tier of a tier-based hierarchical format;
• encoding a higher resolution tier of a tier-based hierarchical format, the higher resolution tier being encoded using data generated during the encoding of the lower resolution tier;
• and
• generating an encoded data stream using an output of the encoding of the lower resolution tier and an output of the encoding of the higher resolution tier;
• the method further comprising:
• determining signal processing information for one or more signal processing operations that are performed to enhance data within the higher resolution tier, the one or more signal processing operations being performed as part of a reconstruction of the higher resolution tier using the data generated during the encoding of the lower resolution tier;
• and
• encoding the signal processing information as part of the encoded data stream.