Color reproduction system for making color display of four or more primary colors based on input tristimulus values
First Claim
1. A display apparatus having a color image projection unit and a screen, the color image projection unit having projection means for projecting images of at least four primary colors and having a structure capable of physically adjusting a projection position of the color image projection unit so that positions of the images of said at least four primary colors projected on the screen coincide.
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Abstract
A color reproduction system includes a color image display unit capable of displaying a color image of four or more primary colors, and a color converting unit for converting input three-primary color signals into color image signals of respective primary colors of the color image display unit. The color converting unit includes an area deciding section that decides a color conversion area to which the input three-primary color signals belong in a three-dimensional color space, and a color image signal calculating section that converts the input three primary color signals into color image signals of respective primary colors based on color conversion parameters corresponding to a color conversion area decided by the area deciding section.
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Citations
20 Claims
- 1. A display apparatus having a color image projection unit and a screen, the color image projection unit having projection means for projecting images of at least four primary colors and having a structure capable of physically adjusting a projection position of the color image projection unit so that positions of the images of said at least four primary colors projected on the screen coincide.
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4. A color reproduction system comprising:
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color image display means for displaying color images of at least four primary colors; and
color conversion means for converting input three primary colors to color image signals of the primary colors of the color image display means using a look-up table, wherein the look-up table determines which one of a plurality of area the input three primary colors should belong to in a three-dimensional space of the input three primary colors, and is formed by converting the input three primary colors to the color image signals of the primary colors based on a conversion parameter corresponding to the area to which the input three primary colors belong.
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5. A color reproduction system comprising:
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color image display means for displaying color images of at least four primary colors, the color image display means including a plurality of image display means for displaying primary colors different from one another; and
color conversion means for converting input three primary colors to color image signals of the primary colors of the color image display means using a lookup table, wherein an output from the conversion means is input to said plurality of image display means.
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6. A color reproduction system comprising:
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a color image display unit capable of displaying a color image of at least four primary colors; and
a color converting unit for converting input three color values which are associated with tristimulus values into color image signals of respective primary colors of the color image display unit, wherein the color converting unit includes;
an area deciding section for deciding which one of a plurality of color conversion areas the input tristimulus values belong to in a three-dimensional color space; and
a color image signal calculating section for converting the input tristimulus values into the color image signals of the respective primary colors based on color conversion parameters corresponding to the color conversion area decided by the area deciding section, and wherein the color converting unit obtains a color image signal that is larger than 0 for at least four primary colors in at least one of the color conversion areas. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification