System and method for color mapping for improved viewing by a color vision deficient observer

A method of color mapping digital visual content for improved viewing by a color vision deficient observer, the method comprising:

• receiving a digital visual content to be color mapped;
• determining at least one portion of said digital visual content to which color mapping is to be applied;
• clustering colors values of said at least one portion into a plurality of color clusters;
• assigning each color cluster of the plurality of color clusters to a respective one of a set of target color values, wherein the set of target color values has increased visual distinguishability for the color vision deficient observer, and wherein the set of target values is a palette of predetermined color values that are determined by a process that includes:
• defining a plurality of subsets of color values, wherein each subset of color values is visually distinguishable for an observer of a given class of color vision deficiency and has at least two color values;
• determining a working palette of visually distinguishable perceived color values for the plurality of subsets of color values based on aggregating color values corresponding to each subset of the plurality of subsets of color values, where the color values being aggregated are color values of a full color gamut located within a predetermined spatial distance of any color value of the subset;
• and
• generating the palette of predetermined color values by determining, for each perceived color value of the working palette of visually distinguishable perceived color values, the color value in the full color gamut corresponding to the perceived color value;
• and
• for each color cluster of the plurality of color clusters, mapping the color values of the color cluster to the target color value of the set of target color values, thereby generating a color-mapped digital visual content.

A method for color mapping digital visual content for improved viewing by a color vision deficient observer, the method comprising:

• receiving a digital visual content to be color mapped;
• determining at least one portion of said digital visual content to which color mapping is to be applied, wherein said at least one portion corresponds to one or more regions of interest that each has one or more graphical elements, and wherein the one or more regions of interest are each determined based on identifying a contiguous region of the digital visual content having one or more frequently occurring ranges of color across pixels of the contiguous region;
• clustering colors values of said at least one portion into a plurality of color clusters;
• assigning each color cluster of the plurality of color clusters to a respective one of a set of target color values, wherein the set of target color values has increased visual distinguishability for the color vision deficient observer, and wherein the set of target values is an extended palette of predetermined color values that are determined to be suitable for a given class of color vision deficient observers;
• and
• for each color cluster of the plurality of color clusters, mapping the color values of the color cluster to the target color value of the set of target color values, thereby generating a color-mapped digital visual content.