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1. 发明授权

US06559975B1 Full-color to a spot-color image converter 有权
标题翻译：全彩色到专色图像转换器
公开(公告)号：US06559975B1
公开(公告)日：2003-05-06
申请号：US09333735
申请日：1999-06-15
申请人： Justin G. Tolmer , Edward H. Ringness , Paul C. Elliott
发明人： Justin G. Tolmer , Edward H. Ringness , Paul C. Elliott
IPC分类号： H04N140
CPC分类号： H04N1/56
摘要： A method for transforming an image, containing an arbitrary number of colors from a full color process printing mode to a spot color printing mode while preserving the user's intended color usage as much as possible. The method is contained in a utility and referred to as “Spot Color Transformation” (SCT). The SCT utility provides a user the ability to transform an image generated by a computer program module, such as a desktop publishing computer program module, from a full color mode into a spot color mode. The SCT utility operates on an object-by-object basis to map objects within an image to one of several partitions: a black partition and a color partition. The SCT utility maps each object that has an associated color that is substantially black or a tint of black to the black partition. Next, the SCT utility converts the colors of unmapped objects to a tint of the spot color based on the luminance value of the particular color relative to the lowest luminance value found in the image. Finally each converted object and its corresponding tint of the spot color are mapped to the spot color partition. The partitions are then used to print copies of the image.
摘要翻译：一种用于将包含任意数量的颜色的图像从全色处理打印模式转换为专色打印模式的方法，同时尽可能地保持用户的预期颜色使用。该方法包含在实用程序中，称为“专色转换”（SCT）。 SCT实用程序使用户能够将计算机程序模块（例如桌面发布计算机程序模块）生成的图像从全色模式转换为专色模式。 SCT实用程序在逐个对象的基础上运行，将映像中的对象映射到几个分区之一：黑色分区和颜色分区。 SCT实用程序将具有基本上为黑色或黑色分色的相关联颜色的每个对象映射到黑色分区。接下来，SCT实用程序基于相对于图像中找到的最低亮度值的特定颜色的亮度值将未映射对象的颜色转换为专色的色调。最后，每个转换对象及其对应的专色色调映射到专色分区。然后使用分区打印图像副本。

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