Digital watermarking methods, apparatus and systems

A method comprising:

• obtaining a first color channel, a second color channel and a luminance channel, the first color channel, the second color channel and the luminance channel are each components of a color image signal or color video signal;
• obtaining a digital watermark orientation pattern, the orientation pattern serving to facilitate detection of a watermark message;
• separating the digital watermark orientation pattern into first frequency components, second frequency components and third frequency components;
• utilizing a processor or electronic processing circuitry, transforming the first color channel by steganographically embedding the first frequency components therein;
• utilizing a processor or electronic processing circuitry, transforming the second color channel by steganographically embedding the second frequency components therein;
• and
• utilizing a processor or electronic processing circuitry, transforming the luminance channel by steganographically embedding the third frequency components therein.

An apparatus comprising:

• one or more electronic processors;
• and
• instructions for execution by said one or more electronic processors, said instructions comprising instructions for:
• i) obtaining a first color channel and a second color channel, the first color channel and the second color channel are components of a color image signal or color video signal;
• ii) obtaining a digital watermark orientation pattern, the orientation pattern serving to facilitate detection of a watermark message;
• iii) separating the digital watermark orientation pattern into first frequency components and second frequency components;
• iv) transforming the first color channel by steganographically embedding the first frequency components therein;
• and v) transforming the second color channel by steganographically embedding the second frequency components therein.

An apparatus comprising:

• electronic memory for buffering color channel information;
• one or more electronic processors programmed for:
• obtaining a first color channel, a second color channel and a luminance channel, the first color channel, the second color channel and the luminance channel are each components of a color image signal or color video signal;
• obtaining a digital watermark orientation pattern, the orientation pattern serving to facilitate detection of a watermark message;
• separating the digital watermark orientation pattern into first frequency components, second frequency components and third frequency components;
• transforming the first color channel by steganographically embedding the first frequency components therein;
• transforming the second color channel by steganographically embedding the second frequency components therein;
• and
• transforming the luminance channel by steganographically embedding the third frequency components therein.