Method of color mapping of oligochromatic patterns
AssigneeAgfa NV
InventorMarc Mahy
Life of this patent
Estimating the term…
Abstract
A method of color mapping color values of an oligochromatic pattern comprising the following steps: determining an image-gamut, in a N-dimensional device independent color system (ND-DICS), of said oligochromatic pattern; wherein said image-gamut comprises said color values of said oligochromatic pattern; and determining a skeleton (500) of said image-gamut; and performing an adaption on said skeleton (500) in said ND-DICS by a set of N-dimensional-transforming steps (30) and determining for points of said skeleton (500), a path in said ND-DICS that corresponds to said adaption; and color mapping said color values, of said oligochromatic pattern, based on said determined paths (35) of said points of said skeleton (500).
Claims7
A method of mapping color values of an oligochromatic pattern comprising the following steps:
- determining an image-gamut of said oligochromatic pattern in an N-dimensional device independent color system, wherein N>1 and said image-gamut comprises color values of said oligochromatic pattern;
- determining a skeleton of said image-gamut;
- performing an adaptation of said skeleton, the adaptation comprising a set of N-dimensional transformation steps in said N-dimensional device independent color system;
- determining, for points of said skeleton, a path in said N-dimensional device independent color system that corresponds to said adaptation;
- and
- mapping said color values of said oligochromatic pattern along said determined path,
- wherein the oligochromatic pattern is a wood pattern, the step of determining the skeleton comprises determining a plurality of points forming said skeleton, and said plurality of points are determined by:
- selecting a straight line in the N-dimensional device independent color system;
- selecting a range along said selected straight line;
- selecting a sub-image-gamut of said image-gamut, wherein said sub-image-gamut comprises color values of which a projection towards said selected straight line belongs to said range;
- and
- selecting a balance point in said sub-image-gamut as a point of said skeleton.
A method of mapping color values of an oligochromatic pattern comprising the following steps:
- determining an image-gamut of said oligochromatic pattern in an N-dimensional device independent color system, wherein N>1 and said image-gamut comprises color values of said oligochromatic pattern;
- determining a skeleton of said image-gamut
- performing an adaptation of said skeleton, the adaptation comprising a set of N-dimensional transformation steps in said N-dimensional device independent color system;
- determining, for points of said skeleton, a path in said N-dimensional device independent color system that corresponds to said adaptation;
- and
- mapping said color values of said oligochromatic pattern along said determined path,
- wherein the oligochromatic pattern is a wood pattern, wherein the step of determining the skeleton comprises determining a plurality of points forming said skeleton, and wherein said plurality of points are determined by:
- selecting a straight line in the N-dimensional device independent color system;
- selecting a range along said selected straight line;
- selecting a sub-image-gamut of said image-gamut;
- wherein said sub-image-gamut comprises color values of which a projection towards said selected straight line belongs to said range;
- and
- selecting a color value in said sub-image-gamut as a point of said skeleton.
Dependencies are inferred from the claim text.