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    • 10. 发明授权
    • Color printing system calibration
    • 彩色打印系统校准
    • US08873104B2
    • 2014-10-28
    • US13639050
    • 2010-04-07
    • Hila NachlieliMichal AharonDoron Shaked
    • Hila NachlieliMichal AharonDoron Shaked
    • H04N1/40H04N1/60
    • H04N1/6047
    • A component of a color printing system, such as lookup tables for converting requested marking-agent coverages to corresponding half-tone screen sizes, is calibrated. The calibration can be effected off an arbitrary image and involves making reflectance spectrum measures of the printed image at multiple locations. Expected reflectance measures for each measurement location are computed based on the requested coverage value for each of the marking agents printed there. The computed measures may be dependent on a parameter. A value of the parameter is determined that minimizes the aggregate differences between the sensed and expected reflectance-spectrum measures, and this value is then used in calibrating the component.
    • 校准彩色打印系统的组件,例如用于将请求的标记代理覆盖转换为相应的半色调屏幕尺寸的查找表。 可以从任意图像进行校准,并且涉及在多个位置处对印刷图像进行反射光谱测量。 每个测量位置的预期反射率测量值是根据印刷在其上的每个打标剂所要求的覆盖值来计算的。 计算的度量可以取决于参数。 确定参数的值,使感测和预期反射光谱测量之间的总差异最小化,然后将该值用于校准组件。