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    • 92. 发明申请
    • COLOR PRINTING SYSTEM CALIBRATION
    • 彩色打印系统校准
    • US20130021631A1
    • 2013-01-24
    • US13639050
    • 2010-04-07
    • Hila NachlieliMichal AharonDoron Shaked
    • Hila NachlieliMichal AharonDoron Shaked
    • H04N1/60
    • 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。
    • 100. 发明申请
    • Unified spatial image processing
    • 统一空间图像处理
    • US20090034870A1
    • 2009-02-05
    • US11888572
    • 2007-07-31
    • Renato KeshetPavel KisilevMani FischerDoron ShakedBoris Oicherman
    • Renato KeshetPavel KisilevMani FischerDoron ShakedBoris Oicherman
    • G06K9/40
    • G06T5/001G06T2207/20016G06T2207/20028
    • Various embodiments of the present invention are directed to methods and systems for image processing that are unified in nature, carrying out many image-enhancement tasks together in a unified approach, rather than sequentially executing separately implemented, discrete image-enhancement tasks. In addition, the methods and systems of the present invention can apply image-enhancement to local, spatial regions of an image, rather than relying on global application of enhancement techniques that result in production of artifacts and distortions. In certain embodiments of the present invention, various different types of intermediate images are produced at each of a number of different scales from a received, input image. From these intermediate images, a photographic mask and temporary image are obtained, and the photographic mask and temporary image are then employed, along with a look-up table or function that receives values from the photographic mask and temporary image, to compute an enhanced, output image. In a described embodiment of the present invention, the intermediate images include low-pass, band-pass, photographic-mask, and temporary-image intermediate images computed at each of a number of different scales.
    • 本发明的各种实施例涉及用于图像处理的方法和系统,这些方法和系统本质上是统一的,以统一的方式一起执行许多图像增强任务,而不是顺序执行单独实现的离散图像增强任务。 此外,本发明的方法和系统可以将图像增强应用于图像的局部,空间区域,而不是依赖于导致产生伪像和失真的增强技术的全局应用。 在本发明的某些实施例中,在从接收的输入图像的多个不同尺度的每一个处产生各种不同类型的中间图像。 从这些中间图像,获得摄影掩模和临时图像,然后使用摄影掩模和临时图像,以及从摄影掩模和临时图像接收值的查找表或功能,以计算增强的, 输出图像。 在本发明的一个描述的实施例中,中间图像包括在多个不同尺度的每一个处计算的低通,带通,照相掩模和临时图像中间图像。