System and Method for Maintaining Hue Constancy
AssigneeTexas Instruments Incorporated
InventorRajeev Ramanath
Life of this patent
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Abstract
System and method for maintaining perceived hue constancy. A method for displaying an image includes receiving a color vector and associated image data, remapping the color vector to maintain a perceived hue constancy by adjusting a hue component of the color vector in response to a change in a lightness component or a chroma component of the color vector, providing the remapped color vector to a light source for display, and displaying image data associated with the color vector. The use of the constant hue curve ensures that the adjusting of the color vector maintains the perceived hue of the color vector, thereby helping to maintain image quality.
Claims20
A method for maintaining a perceived hue constancy of a color vector in a display system, the method comprising:
- fitting an approximation to a perceived hue curve;
- warping the color vector by adjusting a hue component of the color vector based on the approximation to the perceived hue curve;
- providing the warped color vector to a light source for display;
- and
- displaying image data associated with the color vector.
A method for displaying an image, the method comprising:
- receiving a color vector and associated image data;
- remapping the color vector to maintain a perceived hue constancy by adjusting a hue component of the color vector in response to a change in a lightness component or a chroma component of the color vector;
- providing the remapped color vector to a light source for display;
- and
- displaying image data associated with the color vector.
A display system comprising:
- a light source;
- an array of light modulators optically coupled to the light source and positioned in a light path of the light source, the array of light modulators configured to produce images on a display plane by modulating light from the light source based on image data;
- a video input providing a color vector;
- and
- a controller electronically coupled to the array of light modulators and to the light source, the controller configured to load image data into the array of light modulators and to provide commands to the light source, the controller comprising a color warping unit, the color warping unit configured to maintain perceived hue constancy by warping a hue component of the color vector with respect to a perceived hue curve.
Dependencies are inferred from the claim text.