| 摘要 |
Provided is an image processing device. A first color space converting unit converts image data in an RGB colorimetric system, which has a color gamut wider than a color gamut of a liquid crystal panel into image data in an XYZ colorimetric system. A three-dimensional nonlinear color gamut converting unit performs conversion on tristimulus values of the XYZ signal. At this time, the image data is classified into four colors and converted respectively such that the first color is displayed in a color accurate to the inputted data, the second color is displayed such that saturation of the second color is increased, the third color is displayed using a color gamut of a predetermined range out of the color gamut of the liquid crystal panel, and the fourth color is displayed in a color corresponding to a boundary of the color gamut of the liquid crystal panel. |
| 主权项 |
1. A display device, comprising:
a display panel configured to display an image; and an image processing device configured to convert a color represented by inputted data into a color within a color reproduction range of a predetermined output device, the image processing device including,
a first color space converting unit configured to convert image data in an RGB colorimetric system obtained based on the inputted data into first XYZ data which is image data in an XYZ colorimetric system,an XYZ data converting unit configured to generate second XYZ data which is image data in the XYZ colorimetric system by performing predetermined conversion processing to X, Y, and Z values as tristimulus values that constitute the first XYZ data, the second XYZ data representing the color within the color reproduction range of the output device, anda second color space converting unit configured to convert the second XYZ data into image data in the RGB colorimetric system, wherein, the display panel displays the image based on the data in the RGB colorimetric system generated by the second color space converting unit, wherein, the display device is configured such that, to the first color space converting unit, image data representing a color within a color reproduction range wider than the color reproduction range of the output device is supplied as the inputted data, and wherein, the display device is configured such that, the XYZ data converting unit,
categorizes the first XYZ data into first color data, second color data, third color data, and fourth color data, the first color data representing a color within a color reproduction range corresponding to a first boundary line provided in an xy chromaticity diagram, the second color data representing a color having a chromaticity coordinate outside the first boundary line in the xy chromaticity diagram and within a color reproduction range based on a predetermined standard that is compatible With a standard for the inputted data, the third color data representing a color outside the color reproduction range based on the predetermined standard and within a color reproduction range corresponding to a third boundary line provided in the xy chromaticity diagram so as to include the Color reproduction range of the output device, and the fourth color data representing a color having a chromaticity coordinate outside the third boundary line in the xy chromaticity diagram, andperforms the conversion processing to the X, Y, and Z values such that, for the first color data, a color represented by the first XYZ data is identical with a color presented by the second XYZ data, such that, for the second color data, the color reproduction range obtained by the second XYZ data is wider than the color reproduction range obtained by the first XYZ data, such that, for the third color data, the color represented by the second XYZ data has a chromaticity coordinate outside a second boundary line provided in the xy chromaticity diagram so as to include the color reproduction range based on the predetermined standard and is within the color reproduction range of the output device, and such that, for the fourth color data, the color represented by the second XYZ has a chromaticity coordinate along an outermost line expressing the color reproduction range of the output device in xy chromaticity diagram. |
