Method of calibrating a digital printer using component test patches and
the yule-nielsen equation
    21.
    发明授权
    Method of calibrating a digital printer using component test patches and the yule-nielsen equation 失效
    使用组件测试补丁和yule-nielsen方程校准数字打印机的方法

    公开(公告)号:US5748330A

    公开(公告)日:1998-05-05

    申请号:US850462

    申请日:1997-05-05

    摘要: A technique for calibrating the hardware and software of a digital printing apparatus relies on making seven component test patches which completely characterize the printing system, and then measuring the actual reflectance of these seven test patches. The measured reflectances are then converted, by the Yule-Nielsen equation, to values representative of the ink area coverage characteristic of each component test patch, because ink area coverage is the parameter that can be directly controlled by the digital printer. This conversion step takes into account the non-linear relationship between the reflectance of a halftone area and the amount of ink area coverage on the halftone area.

    摘要翻译: 用于校准数字打印装置的硬件和软件的技术依赖于制作完整的打印系统特征的七个组件测试补丁,然后测量这七个测试补丁的实际反射率。 通过Yule-Nielsen方程将所测量的反射率转换为代表每个部件测试贴片的墨水面积覆盖特性的值,因为墨水面积覆盖率是可由数字打印机直接控制的参数。 该转换步骤考虑了半色调区域的反射率和半色调区域上的墨水面积的量之间的非线性关系。

    Color correction of digital color image
    22.
    发明授权
    Color correction of digital color image 有权
    数字彩色图像的颜色校正

    公开(公告)号:US08922673B2

    公开(公告)日:2014-12-30

    申请号:US13333346

    申请日:2011-12-21

    IPC分类号: H04N9/73 H04N5/76

    摘要: A software application corrects for luminance and/or color in a captured image on a device having two cameras. The first camera receives a reference image, and the second camera receives a target image. The device compares the reference image and a reference file retrieved from memory to identify one or more luminance or color differences, and it automatically actuates an optical adjustment element of the second imaging device in response to the differences. The second imaging device captures a target image, and the target image is stored in a computer-readable memory.

    摘要翻译: 软件应用程序在具有两个摄像机的设备上校正拍摄图像中的亮度和/或颜色。 第一相机接收参考图像,第二相机接收目标图像。 该装置比较参考图像和从存储器检索的参考文件以识别一个或多个亮度或颜色差异,并且响应于差异自动地启动第二成像装置的光学调节元件。 第二成像装置捕获目标图像,并将目标图像存储在计算机可读存储器中。

    Simulated paper texture using clear toner and glossmark on texture-less stock
    23.
    发明授权
    Simulated paper texture using clear toner and glossmark on texture-less stock 有权
    模拟纸纹理使用清晰的墨粉和光泽标记无纹理的库存

    公开(公告)号:US08619331B2

    公开(公告)日:2013-12-31

    申请号:US13185565

    申请日:2011-07-19

    IPC分类号: G06K15/00

    CPC分类号: G03G15/6585

    摘要: A method includes receiving a primary image as input data and receiving textured image data for rendering a perceived non-uniform texture on a printed output of the primary image. The primary image input data is used for determining a low coverage portion and a high coverage portion. The method then includes applying clear toner to the low coverage portion and applying colored toner at variable anisotropic orientations to the high coverage portion.

    摘要翻译: 一种方法包括:接收主图像作为输入数据,并接收纹理图像数据,用于在主图像的打印输出上呈现感知到的不均匀纹理。 主图像输入数据用于确定低覆盖部分和高覆盖部分。 该方法然后包括向低覆盖部分施加透明调色剂,并将可变各向异性的着色调色剂施加到高覆盖部分。

    Dual resolution two-dimensional barcode
    25.
    发明授权
    Dual resolution two-dimensional barcode 失效
    双分辨率二维条形码

    公开(公告)号:US08500026B2

    公开(公告)日:2013-08-06

    申请号:US13312386

    申请日:2011-12-06

    IPC分类号: G06K7/12

    CPC分类号: G06K19/06037

    摘要: A grayscale two-dimensional barcode may be converted to a two-dimensional color barcode. The color barcode includes a set of sub-regions, and the cells in each sub-region exhibits a color pattern that corresponds to pattern of binary, grayscale cells. The two-dimensional color barcode may be decoded by comparing the pattern for each sub-region to a known grayscale pattern. The two-dimensional color barcode may be used for error correction by first decoding the barcode in grayscale form based on the luminance without reference to color, then decoding the barcode based on its color and comparing the results.

    摘要翻译: 灰度二维条形码可以被转换为二维彩色条形码。 彩色条形码包括一组子区域,并且每个子区域中的单元呈现对应于二进制灰度单元格的颜色图案。 可以通过将每个子区域的图案与已知的灰度图案进行比较来解码二维彩色条形码。 可以通过基于不参照颜色的亮度以灰度形式对条形码进行解码,然后基于其颜色对条形码进行解码并比较结果,可以将二维彩色条形码用于纠错。

    Substrate media distortion analysis
    26.
    发明授权
    Substrate media distortion analysis 有权
    基板介质失真分析

    公开(公告)号:US08467592B2

    公开(公告)日:2013-06-18

    申请号:US12655216

    申请日:2009-12-23

    IPC分类号: G06K9/00

    摘要: Embodiments described herein are directed to detecting and/or measuring distortions of substrate media that can occur during a printing process. The distortion can be detected and/or measured using a composite image generated from a reference image having a first periodic pattern and print image, disposed on a test substrate media, having a second periodic pattern. The first and second periodic patterns are specified so that the composite image includes a moiré pattern having moiré fringes resulting from interference between the first periodic pattern associated with the reference image and the second periodic pattern associated with the print image. The moiré fringes can be used to detect and calculate an amount of distortion of the test substrate media.

    摘要翻译: 本文描述的实施例涉及检测和/或测量可能在印刷过程中发生的基底介质的变形。 可以使用从具有第二周期性图案的设置在测试基板介质上的具有第一周期图案和打印图像的参考图像生成的合成图像来检测和/或测量失真。 指定第一和第二周期性图案,使得合成图像包括具有由与参考图像相关联的第一周期性图案与与打印图像相关联的第二周期性图案之间的干涉而产生的莫尔条纹的莫尔图案。 莫尔条纹可用于检测和计算测试基板介质的变形量。

    SIMULATED PAPER TEXTURE USING CLEAR TONER AND GLOSSMARK ON TEXTURE-LESS STOCK
    27.
    发明申请
    SIMULATED PAPER TEXTURE USING CLEAR TONER AND GLOSSMARK ON TEXTURE-LESS STOCK 有权
    模拟纸张纹理使用清晰的色调和光标在纹理不足的库存

    公开(公告)号:US20130022753A1

    公开(公告)日:2013-01-24

    申请号:US13185565

    申请日:2011-07-19

    IPC分类号: B05D1/06 B05C11/00

    CPC分类号: G03G15/6585

    摘要: A method includes receiving a primary image as input data and receiving textured image data for rendering a perceived non-uniform texture on a printed output of the primary image. The primary image input data is used for determining a low coverage portion and a high coverage portion. The method then includes applying clear toner to the low coverage portion and applying colored toner at variable anisotropic orientations to the high coverage portion.

    摘要翻译: 一种方法包括:接收主图像作为输入数据,并接收纹理图像数据,用于在主图像的打印输出上呈现感知到的不均匀纹理。 主图像输入数据用于确定低覆盖部分和高覆盖部分。 该方法然后包括向低覆盖部分施加透明调色剂,并将可变各向异性的着色调色剂施加到高覆盖部分。

    Security marks simulating natural defects for embedding information in documents
    28.
    发明授权
    Security marks simulating natural defects for embedding information in documents 有权
    模拟在文档中嵌入信息的自然缺陷的安全标记

    公开(公告)号:US08056821B2

    公开(公告)日:2011-11-15

    申请号:US11582813

    申请日:2006-10-18

    IPC分类号: G06K19/06

    摘要: A system for generating a security mark includes a data reception component that receives information. A security mark generation component in communication with the data reception component generates at least one security mark configuration based at least in part upon the received information. The at least one security mark configuration includes at least one simulation mark which resembles a natural feature. An application component applies one configuration of the at least one security mark configurations to a recipient. The applied security mark configuration obeys at least one rule whereby the security mark is distinguishable from the natural feature which it resembles by a system for detection of security marks.

    摘要翻译: 用于生成安全标记的系统包括接收信息的数据接收部件。 与数据接收组件通信的安全标记生成组件至少部分地基于所接收的信息来生成至少一个安全标记配置。 所述至少一个安全标记配置包括至少一个类似于自然特征的模拟标记。 应用组件将至少一个安全标记配置的一个配置应用于接收者。 应用的安全标记配置遵循至少一个规则,其中安全标记与其由用于检测安全标记的系统类似的自然特征区分开。

    Method of embedding color information in printed documents using watermarking
    29.
    发明授权
    Method of embedding color information in printed documents using watermarking 失效
    使用水印嵌入打印文档中的颜色信息的方法

    公开(公告)号:US07515732B2

    公开(公告)日:2009-04-07

    申请号:US11034131

    申请日:2005-01-12

    IPC分类号: G06K9/00 G06K9/46 G06K9/40

    摘要: A method for enhancing color fidelity in multi-reproduction, includes scanning an image to be reproduced, wherein the image contains an invisible digital watermark including color information; decoding the color information contained in the watermark; comparing the decoded color information with the scanned image; generating a correction table from the differences between the decoded color information and the scanned image; and performing color correction on the scanned image using the correction table. This method confines the color error to one generation, even when copies go through multiple reproduction.

    摘要翻译: 一种用于增强多重再现中的色彩保真度的方法,包括扫描要再现的图像,其中图像包含包含颜色信息的不可见数字水印; 对包含在水印中的颜色信息进行解码; 将解码的颜色信息与扫描图像进行比较; 从解码的颜色信息和扫描图像之间的差异产生校正表; 并使用校正表对扫描图像执行颜色校正。 这种方法将颜色误差限制在一代,即使拷贝经过多重再现。