Method and apparatus for color-preserving spectrum reshape

A method comprising:

• providing a light source that is deficient of a first primary color to a display device;
• receiving, by a spectrum processing circuit, a content to be visually presented on the display device using light beams of the light source;
• filtering, by the spectrum processing circuit in view of a first spectrum of the light source that is deficient of the first primary color, the first spectrum to convert the first spectrum into a second spectrum to compensate for the deficiency of the first primary color in the light source, wherein the second spectrum defines a substantially identical hue value and a substantially identical saturation value as those associated with the first spectrum, wherein the content when presented on the display device substantially preserves color appearance of the visual presentation rendered on the display device by compensating for an effect caused by the deficiency of the first primary color on the color appearance, and wherein compensating for the effect caused by the deficiency of the first primary color on the color appearance comprises taking into account a spectral sensitivity profile associated with retina cells, an emission spectrum associated with a pixel, and a spectral transmittance function corresponding to the color of the primary light;
• and
• providing, to the display device, the visual presentation of the content with the second spectrum of the light source.