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US07643176B2 Method and apparatus controlling printed color tone conditionally using a representative point or alternative representative point 失效
使用代表点或替代代表点有条件地控制打印色调的方法和装置

Method and apparatus controlling printed color tone conditionally using a representative point or alternative representative point
Abstract:
A printed tone control method for adjusting a printed color tone by comparing image data serving as a reference and image data obtained by reading an image from a print actually made by a printing machine. The method includes a representative point setting step for setting a representative point for use in control of the color tone based on image data, an alternative representative point setting step for setting an alternative representative point that satisfies a predetermined condition when a point inappropriate for tone measurement is selected as the representative point, and a tone adjusting step for adjusting the color tone by using the alternative representative point.
Abstract(Chinese):

一种打印色调控制方法，用于通过比较用作参考的图像数据和通过从由打印机实际制作的打印机读取图像而获得的图像数据进行比较来调整打印色调。 该方法包括：代表点设定步骤，用于基于图像数据设置用于色调控制的代表点;替代代表点设定步骤，用于在不适于色调测量的点处设置满足预定条件的替代代表点 被选择为代表点，以及色调调整步骤，用于通过使用替代代表点来调整色调。

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