Method for increasing the saturation of an image, and corresponding device

A device for processing an image formed from pixels each having components defining a color, comprising:

• a processing circuit configured to implement an increase in a saturation of the pixels of the image depending on a gain applied by a transfer function that is dependent on components of each pixel,
• a parameterizing circuit configured to parameterize the gain of said transfer function with at least one control parameter respectively dedicated to at least one type of reference image content, and
• a calculating circuit configured to calculate a value of said at least one control parameter on the basis of actual content of said image by implementing calculations including:
• determining colorimetric statistics of the pixels of said image, the colorimetric statistics of the pixels of the image including hue, brightness, and saturation of the color of each pixel;
• and
• processing said colorimetric statistics in accordance with at least one processing model respectively dedicated to preservation of said at least one type of reference image content;
• wherein the parameterizing circuit parameterizes the gain dependent upon at least one of the hue, the brightness, and the saturation of the color of each pixel.