Quantization-Based Data Embedding in Mapped Data

A method for data embedding into a host signal comprising:

• mapping the host signal from a first domain into a mapped signal in a second domain;
• projecting the mapped signal onto a pseudo random vector;
• computing quantizers such that corresponding quantizers in the first and second domains satisfy a constraint, wherein the mapping provides the corresponding quantizers in the first and second domains;
• and
• performing a quantization based embedding on the projection of the mapped signal onto the pseudo random vector.

A method of reading auxiliary data embedded in a host signal comprising:

• mapping the host signal from a first domain into a mapped signal in a second domain that is robust to a class of modifications;
• computing quantizers such that corresponding quantizers in the first and second domains satisfy a constraint, wherein the mapping provides the corresponding quantizers in the first and second domains;
• and
• performing quantization based reading of auxiliary data embedded into the host signal using quantizers computed from the second domain.

A method of reading auxiliary data embedded in a host signal comprising:

• mapping the host signal from a first domain into a mapped signal in a second domain that is robust to a class of modifications;
• projecting the mapped signal onto a pseudo random vector;
• computing quantizers such that corresponding quantizers in the first and second domains satisfy a constraint, wherein the mapping provides the corresponding quantizers in the first and second domains;
• and
• performing a quantization based reading of the auxiliary data embedded in a projection of the mapped signal onto the pseudo random vector.