Content management based on dither-like watermark embedding

A device, comprising:

• a processor;
• and
• a memory including processor executable code, the processor executable code when executed by the processor configures the device to:
• select a multimedia content segment that lacks inherent features for embedding of watermarks without producing perceptible artifacts;
• obtain a first dither pattern corresponding to a first watermark symbol, wherein the first watermark symbol is one of a plurality of watermark symbols of a watermark alphabet, and each symbol of the watermark alphabet is associated with a particular dither pattern, each particular dither pattern, including the first dither pattern, formed as a low amplitude noise-like pattern which upon combination with the multimedia content segment that lacks inherent features, produces a composite content segment without artifacts;
• and
• combine the first dither pattern with the multimedia content segment that lacks inherent features to produce a first composite content segment with the first watermark symbol embedded therein, wherein each particular dither pattern includes a sum of a plurality of selected sinusoids that produces either a positive autocorrelation value or a negative autocorrelation value depending on a corresponding symbol value of the watermark alphabet.

A computer program product, embodied on one or more non-transitory computer readable media, the computer program product including program code executable by a processor, comprising:

• program code for selecting a multimedia content segment that lacks inherent features for embedding of watermarks without producing perceptible artifacts;
• program code for obtaining a first dither pattern corresponding to a first watermark symbol, wherein the first watermark symbol is one of a plurality of watermark symbols of a watermark alphabet, and each symbol of the watermark alphabet is associated with a particular dither pattern, each particular dither pattern, including the first dither pattern, formed as a low amplitude noise-like pattern which upon combination with the multimedia content segment that lacks inherent features, produces a composite content segment without artifacts;
• and
• program code for combining the first dither pattern with the multimedia content segment that lacks inherent features to produce a first composite content segment with the first watermark symbol embedded therein, wherein each particular dither pattern includes a sum of a plurality of selected sinusoids that produces either a positive autocorrelation value or a negative autocorrelation value depending on a corresponding symbol value of the watermark alphabet.

A device, comprising:

• a processor;
• and
• a memory including processor executable code, the processor executable code when executed by the processor configures the device to:
• obtain a first dither pattern corresponding to a first watermark symbol for embedding in a multimedia content segment that lacks inherent features, wherein the first watermark symbol is one of a plurality of watermark symbols of a watermark alphabet, and each symbol of the watermark alphabet is associated with a particular dither pattern, each particular dither pattern, including the first dither pattern, formed as a low amplitude noise-like pattern which upon combination with the multimedia content segment that lacks inherent features, producing produces a composite content segment without artifacts;
• and
• combine the first dither pattern with the multimedia content segment that lacks inherent features to produce a first composite content segment with the first watermark symbol embedded therein, wherein each particular dither pattern includes a sum of a plurality of selected sinusoids that produces either a positive autocorrelation value or a negative autocorrelation value depending on a corresponding symbol value of the watermark alphabet.

A device, comprising:

• a processor;
• and
• a memory including processor executable code, the processor executable code when executed by the processor configures the device to:
• obtain a first dither pattern corresponding to a first watermark symbol for embedding in a multimedia content segment that lacks inherent features, wherein the first watermark symbol is one of a plurality of watermark symbols of a watermark alphabet, and each symbol of the watermark alphabet is associated with a particular dither pattern, each particular dither pattern, including the first dither pattern, formed as a low amplitude noise-like pattern which upon combination with the multimedia content segment that lacks inherent features, producing produces a composite content segment without artifacts;
• and
• combine the first dither pattern with the multimedia content segment that lacks inherent features to produce a first composite content segment with the first watermark symbol embedded therein, wherein each particular dither pattern produces either a positive autocorrelation value or a negative autocorrelation value depending on a corresponding symbol value of the watermark alphabet.