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    • 90. 发明公开
    • VERFAHREN ZUR KORREKTUR VON BILDMESSWERTEN
    • EP1805979A1
    • 2007-07-11
    • EP05808238.9
    • 2005-10-28
    • GretagMacbeth AG
    • EHBETS, PeterKOHLBRENNER, AdrianAMMETER, Harald
    • H04N1/028G01J3/447G01J3/46
    • H04N1/02815G01J3/02G01J3/0224G01J3/50G01J3/51G01J3/513G01J2003/468G01N21/27G01N21/274
    • The invention relates to a method for correcting the measured image values of a test object, especially a printed sheet, in terms of at least one influencing variable influencing the result of measurement, using a pixel-operated photoelectric image measuring device, with the object of at least partially eliminating the effect of this influencing variable in terms of the measuring technique used. The measured image values determined by this image measuring device are converted to corrected measured image values using a correction model which is parameterized by correction parameters, and the corrected measured image values are no longer affected by the effect of this influencing variable in terms of the measuring technique used. The correction parameters used for the parameterized correction model are automatically calculated using measured reference values measured by a reference measuring device and the image measuring device and also using selected reference measurement sites, preferably of the same test object. Measured image values measured according to this method without a polarization filter are converted to measured image values measured with a polarization filter. Any influences depending on the pressure medium, fluorescence effects and influences of non-standard measuring geometries are also corrected.
    • 本发明涉及一种使用像素操作的光电图像测量装置就影响测量结果的至少一个影响变量来校正测试对象特别是印刷片的测量图像值的方法,其目的是 至少在所使用的测量技术方面至少部分地消除了这个影响变量的影响。 由该图像测量装置确定的测量图像值使用由校正参数参数化的校正模型转换为校正的测量图像值,并且校正后的测量图像值不再受测量方面的影响变量的影响 使用的技术。 用于参数化校正模型的校正参数使用由参考测量装置和图像测量装置测量的测量参考值自动计算,并且还使用选定的参考测量位置,优选为相同的测试对象。 将没有偏振滤波器的根据该方法测量的测量图像值转换成用偏振滤波器测量的测量图像值。 还会根据压力介质,荧光效应和非标准测量几何形状的影响对其进行校正。