Method of applying manipulations to an extended color gamut digital image

A method for modifying a digital image having color values with an extended color gamut comprising:

• a) representing an extended color gamut digital image with a limited color gamut digital image and one or more stored associated residual image(s) each residual image comprising a difference between the extended color gamut digital image and the limited color gamut digital image;
• b) specifying one or more desired image modification(s) to be applied to the extended color gamut digital image;
• c) forming a reconstructed extended color gamut digital image using the limited color gamut digital image and the residual image(s);
• and
• d) modifying the reconstructed extended color gamut digital image in response to the specified desired image modification(s).

A computer program product for modifying a digital image having color values with an extended color gamut, and having a computer readable storage medium with a computer program stored thereon for performing:

• a) representing the extended color gamut digital image with a limited color gamut digital image and one or more stored associated residual image(s) each comprising a difference between the extended color gamut digital image and the limited color gamut digital image;
• b) specifying one or more desired image modification(s) to be applied to the extended color gamut digital image;
• and
• c) modifying the limited color gamut digital image and the residual image(s) to form a modified limited color gamut digital image and one or more modified residual image(s) in response to the specified desired image modification(s).

A computer program product for modifying a digital image having color values with an extended color gamut, and having a computer readable storage medium with a computer program stored thereon for performing:

• a) representing an extended color gamut digital image with a limited color gamut digital image and one or more stored associated residual image(s) each residual image comprising a difference between the extended color gamut digital image and the limited color gamut digital image;
• b) specifying one or more desired image modification(s) to be applied to the extended color gamut digital image;
• c) forming a reconstructed extended color gamut digital image using the limited color gamut digital image and the residual image(s);
• and
• d) modifying the reconstructed extended color gamut digital image in response to the specified desired image modification(s).