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    • 15. 发明授权
    • Method of determining correction parameters for use in light-amount
adjustment in a color copying operation
    • 确定在彩色复印操作中用于光量调节的校正参数的方法
    • US4344704A
    • 1982-08-17
    • US160974
    • 1980-06-19
    • Siegfried ThurmKonrad Bunge
    • Siegfried ThurmKonrad Bunge
    • G03G15/01G03B27/73G03G15/04G03B27/32
    • G03B27/735
    • A method of determining correction parameters for adjusting the amounts of light to which originals are to be exposed in a color copying operation in dependence on the composition deviations of the respective original from a calibrating original involves establishing, for each of a multitude of regions of the respective original, two characteristic values respectively representative of a relationship between the blue and green color values, on the one hand, and the red and green color values, on the other hand, averaging those of the established characteristic values the relationships of which are within a distribution range normally encountered in an image of an object on the original, forming an average from the average values, and ascertaining the magnitude and direction of the correction parameters from the difference between the average obtained from the particular original and a like average obtained from the calibrating original. The regions into which the original is subdivided are successively scanned and the scanned area of each region is only a small fraction of the total area of the respective region. The method may be performed on a single original or on a series of originals.
    • 一种确定校正参数的方法,用于根据相应原稿与校准原稿的组成偏差,在彩色复印操作中调整原件将要曝光的光量,包括为 分别代表分别代表蓝色和绿色颜色值之间的关系以及红色和绿色颜色值的两个特征值,另一方面,将建立的特征值的关系平均为其关系在其内 通常在原件上的对象的图像中遇到的分布范围,从平均值形成平均值,并且根据从特定原件获得的平均值与从特定原件获得的平均值之间的差异来确定校正参数的大小和方向 校准原件。 连续地扫描原稿被细分的区域,并且每个区域的扫描区域只是相应区域的总面积的一小部分。 该方法可以在单个原件上或一系列原件上执行。