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    • 94. 发明申请
    • Method and system for color grading of gemstones
    • 宝石颜色分级方法和系统
    • US20070153256A1
    • 2007-07-05
    • US11322431
    • 2005-12-30
    • Yan Liu
    • Yan Liu
    • G01N21/87
    • G01N21/87G01J3/46G01J3/462G01J3/463G01J3/465G01N21/278G01N21/293
    • A method and system, including a computer program product, implementing a color terminology for accurate color grading of gemstones are provided. The method includes generating a reference color to match that of a graded gemstone under the standard viewing environment, processing color data in different color spaces, assigning a color grade to specify the color of the gemstone graded. The reference color can be continuously changed by adjusting the hue, lightness and saturation values. The color grade comprises a color name and one or more corresponding color coordinates and/or one or more corresponding color notations, in the form of Color Name (Color Coordinates). The color name is used for verbal description of the color, and the color coordinate or color notation is for accurate color communication in the jewelry industry.
    • 提供了一种方法和系统,包括计算机程序产品,实现了宝石准确色彩分级的颜色术语。 该方法包括生成与标准观察环境下的分级宝石相匹配的参考颜色,处理不同颜色空间中的颜色数据,分配颜色等级以指定分级宝石的颜色。 可以通过调整色调,亮度和饱和度值来连续改变参考色。 颜色等级包括以颜色名称(颜色坐标)的形式的颜色名称和一个或多个相应的颜色坐标和/或一个或多个相应的颜色符号。 颜色名称用于口头描述颜色,颜色坐标或颜色符号用于珠宝行业的准确色彩通信。