Patent ID: 6882449

Claim:
A method for gamut mapping of an input image using a space varying algorithm, comprising: receiving the input image; converting the color representations of an image pixel set to produce a corresponding electrical values set; applying the space varying algorithm to the electrical values set to produce a color-mapped value set; reconverting the color-mapped value set to an output image; and wherein the space varying algorithm minimizes the following variational problem: E ⁢ ( u ) = ∫ Ω ⁢ ( D 2 + α | ∇ D ⁢ | 2 ) ⁢ ⅆ Ω , subject to uε , wherein Ω is a support of the input image, is the target gamut, α is a non-negative real number, D=g*(u−u 0 ), g is a normalized Gaussian kernel with zero mean and a small variance σ, u0 is the input image, and u is the output image.