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    • 10. 发明授权
    • Color conversion apparatus and method
    • 颜色转换装置及方法
    • US08072647B2
    • 2011-12-06
    • US12222731
    • 2008-08-14
    • Shuichi KagawaJun SomeyaHiroaki Sugiura
    • Shuichi KagawaJun SomeyaHiroaki Sugiura
    • G03F3/08G06F15/00H04N1/46G06K9/00
    • H04N1/6058
    • A color conversion apparatus receives first image data including first red-green-blue color data in which the possible values of the red, green, and blue components extend beyond the range from 0% to 100%. The first color data are analyzed into first hue region data, the magnitudes of which are adjusted according to the brightness and/or saturation of the first color data to obtain second and third hue region data. The gamut of colors of the first image data is detected, and matrix coefficients are generated according to the detected gamut. The matrix coefficients are used to perform a matrix operation on the second and third hue region data to obtain second color data, thereby converting the first image data to second image data with conversion characteristics appropriate for the gamut of colors of the first image data.
    • 颜色转换装置接收包括第一红 - 绿 - 蓝颜色数据的第一图像数据,其中红,绿和蓝分量的可能值延伸超出0%至100%的范围。 将第一颜色数据分析为第一色相区域数据,其数量根据第一颜色数据的亮度和/或饱和度进行调整,以获得第二和第三色调区域数据。 检测第一图像数据的色域,并根据检测到的色域生成矩阵系数。 矩阵系数用于对第二和第三色调区域数据执行矩阵运算以获得第二颜色数据,从而将第一图像数据转换成具有适合于第一图像数据的色域的转换特性的第二图像数据。