Information processing device and method, and program, for gamut conversion of content

An information processing method comprising:

• a step of gamut conversion of an input image so as to generate an output image whose gamut is narrower than a gamut of the input image;
• a metadata generating step to generate, based on a result of a determination whether a predetermined metadata generating condition indicating whether to generate metadata is satisfied, metadata that includes parameters of an isosbestic point table used by a color mapping data processing which maps each pixel of the output image so that a gamut of a mapped image after the color mapping process is wider than the gamut of the output image to the gamut of the input image;
• and
• a step to associate said generated metadata to said output image,
• wherein the step of gamut conversion, the metadata generating step and the step to associate are by a processor.

A non-transitory recording medium on which is recorded a program that causes a computer to execute an information processing method comprising:

• a step of gamut conversion of an input image so as to generate an output image whose gamut is narrower than a gamut of the input image;
• a metadata generating step to generate, based on a result of a determination whether a predetermined metadata generating condition indicating whether to generate metadata is satisfied, metadata that includes parameters of an isosbestic point table used by a color mapping processing which maps each pixel of the output image so that a gamut of a mapped image after the color mapping process is wider than the gamut of the output image;
• and
• a step to associate said generated metadata to said image.