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    • 61. 发明授权
    • Color conversion using transformed gamuts
    • 使用转换色域的颜色转换
    • US08218206B2
    • 2012-07-10
    • US11459492
    • 2006-07-24
    • Ayumi HoriManabu Yamazoe
    • Ayumi HoriManabu Yamazoe
    • G03F3/08H04N1/60
    • H04N1/6058
    • The gamut of a printer has poor saturation reproducibility in a low-lightness region, often has a shape from which the gamut is cut away, and sometimes locally forms a part having extremely low color reproducibility. Hence, upon converting colors on a first gamut onto those on a second gamut, a third gamut is generated by transforming the second gamut for the purpose of the conversion, and the colors on the first gamut are mapped onto the third gamut. The colors on the first gamut are converted into those on the second gamut based on the mapping result.
    • 打印机的色域在低亮度区域具有差的饱和再现性,通常具有从色带被切除的形状,有时局部地形成具有极低颜色再现性的部分。 因此,在将第一色域上的颜色转换为第二色域上的颜色时,通过转换第二色域来生成第三色域,用于转换,并且将第一色域上的颜色映射到第三色域。 基于映射结果,第一色域上的颜色被转换成第二色域中的颜色。
    • 66. 发明授权
    • Image processing apparatus and method for performing gamut mapping via device-independent standard color space
    • 用于通过独立于设备的标准色彩空间进行色域映射的图像处理装置和方法
    • US07965426B2
    • 2011-06-21
    • US11462652
    • 2006-08-04
    • Ayumi HoriMasao KatoTetsuya SuwaManabu Yamazoe
    • Ayumi HoriMasao KatoTetsuya SuwaManabu Yamazoe
    • H03F3/08G06K9/00G09G5/02
    • H04N1/6058
    • An image processing method is used to converting a color within a first color reproduction range that is a device-independent color space into a color within a second color reproduction range that is a color reproduction range of an output device. The image processing method includes defining, within the first color reproduction range, a third color reproduction range of a color that is estimated to be input; defining, within the second color reproduction range, a fourth color reproduction range that is smaller than the second color reproduction range; and, in performing the color conversion, compressing a color within the third color reproduction range into a color within the fourth color reproduction range and compressing a color within the first color reproduction range and outside the third color reproduction range into a color within the second color reproduction range and outside the fourth color reproduction range.
    • 图像处理方法用于将作为与设备无关的色彩空间的第一颜色再现范围内的颜色转换成作为输出设备的颜色再现范围的第二颜色再现范围内的颜色。 图像处理方法包括在第一颜色再现范围内定义被估计输入的颜色的第三颜色再现范围; 在所述第二颜色再现范围内限定小于所述第二颜色再现范围的第四颜色再现范围; 并且在执行颜色转换时,将第三颜色再现范围内的颜色压缩成第四颜色再现范围内的颜色,并将第一颜色再现范围内的颜色和第三颜色再现范围外的颜色压缩成第二颜色内的颜色 再现范围和第四色彩再现范围之外。