System and method for a multi-primary wide gamut color system

A system for encoding and decoding an image signal, comprising:

• an encoder, wherein the encoder includes at least one encoder processor, at least one encoder memory, at least one encoder input, a watermark engine, and at least one encoder output;
• and
• a decoder, wherein the decoder includes at least one decoder processor, at least one decoder memory, at least one decoder input, a watermark detection engine, a watermark subtraction engine, and at least one decoder output;
• wherein the encoder and the decoder are in communication;
• wherein the at least one encoder input is image data related to the image signal;
• wherein the encoder is operable to process the at least one encoder input and the watermark engine is operable to modify the at least one encoder input to include a digital watermark, thereby creating the at least one encoder output;
• wherein the at least one encoder output is xyY data, wherein the xyY data corresponds to a set of values in an International Commission on Illumination (CIE) xyY color space, wherein the xyY data includes two colorimetric coordinates (x and y) and a luminance (Y);
• wherein the at least one encoder output is transmitted to the decoder, thereby creating the at least one decoder input;
• wherein the decoder is operable to process the at least one decoder input, the watermark detection engine is operable to detect the digital watermark, and the watermark subtraction engine is operable to remove the digital watermark, thereby creating the at least one decoder output;
• wherein the digital watermark is outside of the ITU-R BT.2020 color gamut and is not visible and is not detectable when displayed on a viewing device with the ITU-R BT.2020 color gamut;
• and
• wherein the decoder requires the presence of the digital watermark in the processed image data sent from the encoder to provide the at least one decoder output.

A system for encoding and decoding an image signal, comprising:

• an encoder, wherein the encoder includes at least one encoder processor, at least one encoder memory, at least one encoder input, a gamma function, and at least one encoder output;
• and
• a decoder, wherein the decoder includes at least one decoder processor, at least one decoder memory, at least one decoder input, a gamma to linear converter, and at least one decoder output;
• wherein the encoder and the decoder are in communication;
• wherein the at least one encoder input is image data related to the image signal;
• wherein the encoder is operable to process the at least one encoder input using the gamma function, thereby creating the at least one encoder output;
• wherein the at least one encoder output is xyY data, wherein the xyY data corresponds to a set of values in an International Commission on Illumination (CIE) xyY color space, wherein the xyY data includes two colorimetric coordinates (x and y) and a luminance (Y);
• wherein the gamma function is applied to the luminance (Y) to create a luma (Y′);
• wherein the at least one encoder output is transmitted to the decoder, thereby creating the at least one decoder input;
• wherein the decoder is operable to process the at least one decoder input and remove the gamma function using the gamma to linear converter, thereby creating the at least one decoder output.