Method of embedding of an image with a color transform

Method of embedding at least one original image with at least one original color transform, comprising:

• A/ generation, from at least said one original image, of a deteriorated image associated with a first bit rate,
• B/ generation, from at least said one original color transform, of a deteriorated color transform associated with a second bit rate,
• C/ application of said at least one original color transform to said deteriorated image to obtain a first test image,
• D/ application of said deteriorated color transform to said original image to obtain a second test image,
• E/ obtaining a first distortion by comparison of the first test image with the original image,
• F/obtaining a second distortion by comparison of the second test image with the original image,
• G/ obtaining a conjoint bit rate from a summation of the first bit rate with the second bit rate,
• H/ obtaining a global distortion from a summation of the first distortion with the second distortion, said summation being optionally weighted, then, a tradeoff between the conjoint bit rate and the global distortion being determined,
• in the case where said trade-off is met, determining a final conjoint bit rate associated with said trade-off,
• otherwise in the case where said trade-off is not met, selecting new values of said first bit rate and/or said second bit rate such that a new conjoint bit rate obtained from a summation of said new first bit rate, if any, or previous first bit rate, if no new first bit rate is selected, with said new second bit rate, if any, or previous second bit rate, if no new second bit rate is selected, is inferior to the previous conjoint bit rate, and repeating a loop of steps A/ to H/ with said new first bit rate and/or said new second bit rate,
• when said final conjoint bit rate associated with said trade-off is determined, inferring the values of the final first bit rate and of the final second bit rate such that the summation of the final first bit rate and of the final second bit rate corresponds to said final conjoint bit rate from a previous loop of steps A/to H/, and embedding the at least one deteriorated image associated with said final first bit rate from said previous loop with the deteriorated color transform associated with said final second bit rate from the same previous loop.