公开(公告)号：US20100142003A1

公开(公告)日：2010-06-10

申请号：US12329082

申请日：2008-12-05

申请人： Karen M. Braun ,  Raja Bala ,  Robert P. Loce

发明人： Karen M. Braun ,  Raja Bala ,  Robert P. Loce

IPC分类号： G06K15/02 ,  H04N1/405 ,  G06K9/00

CPC分类号： H04N1/32309 ,  H04N1/32352 ,  H04N2201/327 ,  H04N2201/3271 ,  Y10S283/902

摘要： A system is employed to reveal a watermark in a document. A watermark generator is utilized to select the placement and at least one colorant combination of an image and at least one colorant combination for a watermark on a document, where the at least one colorant combination of the image and the watermark form a metameric pair. A printing system receives data from the watermark generator and places the image and the watermark on the document. A decoder comprising a narrow band illumination element is selected or tuned to a wavelength corresponding to the colorant combinations utilized by the printing system to reveal the watermark placed thereon.

摘要翻译： 采用系统在文档中显示水印。 使用水印生成器来选择图像的至少一种着色剂组合和用于文档上的水印的至少一种着色剂组合，其中图像和水印的至少一种着色剂组合形成同色异体对。 打印系统从水印生成器接收数据，并将图像和水印放置在文档上。 包括窄带照明元件的解码器被选择或调谐到与由打印系统使用的着色剂组合相对应的波长以显示其上放置的水印。

公开(公告)号：US07719719B2

公开(公告)日：2010-05-18

申请号：US11522610

申请日：2006-09-18

申请人： Robert P. Loce ,  Yeqing Zhang ,  Beilei Xu

发明人： Robert P. Loce ,  Yeqing Zhang ,  Beilei Xu

IPC分类号： H04N1/405 ,  H04N1/409

CPC分类号： H04N1/40075 ,  H04N1/4092

摘要： Images that include halftone structures are sharpened. A copy of received halftone image data is blurred, thereby reducing a detectability of edges of the halftone structures. Edges remaining in the blurred image data are detected. An edge enhancement image is generated based on the detected edges. The original received halftone image data is combined with the edge enhancement image, thereby generating sharpness enhanced image data having halftone structures. The sharpness enhanced image data having halftone structures can be rendered through a halftone screen that is compatible with a halftone screen that was used to generate the originally received image data. Alternatively, the sharpness enhanced image data having halftone structures is rendered according to error diffusion techniques, such as, rank order error diffusion in order to achieve or maintain dot or halftone structure compaction.

摘要翻译： 包括半色调结构的图像被削尖。 所接收的半色调图像数据的副本被模糊，从而降低了半色调结构的边缘的可检测性。 检测残留在模糊图像数据中的边缘。 基于检测到的边缘生成边缘增强图像。 原始接收的半色调图像数据与边缘增强图像组合，从而产生具有半色调结构的锐度增强的图像数据。 具有半色调结构的清晰度增强的图像数据可以通过与用于生成原始接收的图像数据的半色调屏幕兼容的半色调屏幕来呈现。 或者，具有半色调结构的清晰度增强的图像数据根据误差扩散技术（诸如等级误差扩散）来形成，以实现或维持点或半色调结构压缩。

公开(公告)号：US07590282B2

公开(公告)日：2009-09-15

申请号：US11314670

申请日：2005-12-21

申请人： Zhigang Fan ,  Lalit Keshav Mestha ,  Yao Rong Wang ,  Robert P. Loce ,  Yeqing Zhang

发明人： Zhigang Fan ,  Lalit Keshav Mestha ,  Yao Rong Wang ,  Robert P. Loce ,  Yeqing Zhang

IPC分类号： G06K9/00

CPC分类号： H04N1/4015

摘要： A method and system for selecting an optimal set of S number of calibration patches for an image producing system. The method of selecting the S number of calibration patches includes acquiring a set of K number of basis eigen vectors and model parameters which represent the image producing system having G number of colors and computing the optimal set of S number of colors selected from the set of G number of colors. Each one of the computed set of S number of colors is used for one of the S number of calibration patches.

摘要翻译： 一种用于为图像产生系统选择S个校准块的最佳集合的方法和系统。 选择S个校准贴片的方法包括获取K个基本特征向量和模型参数的集合，所述基本特征向量和模型参数表示具有G个颜色的图像生成系统，并且计算从该组中选择的S个颜色的最佳集合 G色数。 所计算的S个颜色的组合中的每一个用于S个校准块中的一个。

公开(公告)号：US20080137149A1

公开(公告)日：2008-06-12

申请号：US11634657

申请日：2006-12-06

申请人： Robert P. Loce ,  Raja Bala ,  Karen M. Braun

发明人： Robert P. Loce ,  Raja Bala ,  Karen M. Braun

IPC分类号： G06K15/00

CPC分类号： H04N1/32309 ,  H04N1/32299

摘要： Extended colorant sets are used to hide data or provide a watermark in printed images. Extended set colorants are colorants other than, and in addition to, the standard or common subtractive primary colorants: cyan, magenta, yellow and/or black. Where the extended colorant set supports a plurality of colorant recipes for rendering a given color, watermark data is used to select a colorant recipe from the plurality. As the watermark data to be encoded in the image changes state with image position, alternate colorant recipes or colorant selection functions are selected. The image is rendered based on the alternate colorant recipe selections. Watermark information is encoded in the colorant recipe or colorant selection function selection. Use of the extended colorant sets allows information to be encoded even in portions of an image having colors that do not include a neutral component.

摘要翻译： 扩展着色剂集合用于隐藏数据或在打印图像中提供水印。 扩展的定色着色剂是除了标准或普通的减色原色色剂之外的除了和附加的着色剂：青色，品红色，黄色和/或黑色。 在延伸着色剂组支持用于渲染给定颜色的多个着色剂配方的情况下，使用水印数据从多个中选择着色剂配方。 当图像中要编码的水印数据用图像位置改变状态时，选择着色剂配方或着色剂选择功能。 基于备选着色剂配方选择渲染图像。 水印信息在着色剂配方或着色剂选择功能选择中进行编码。 使用扩展着色剂组允许即使在具有不包括中性成分的颜色的图像的部分中也可以对信息进行编码。

公开(公告)号：US20080130055A1

公开(公告)日：2008-06-05

申请号：US11565434

申请日：2006-11-30

申请人： Shen-Ge Wang ,  Robert P. Loce

发明人： Shen-Ge Wang ,  Robert P. Loce

IPC分类号： G06K15/00

CPC分类号： H04N1/4058 ,  H04N1/52

摘要： Disclosed herein is a method and apparatus for moiré-free color halftone printing with up to four color image separations. The method and apparatus utilize a plurality of non-orthogonal halftone screens to produce outputs that are moiré free and form uniform periodic rosettes. The method and apparatus provide for defining a first and a second color halftone screen fundamental frequency vector for each of three halftone screens such that the halftone screen set output forms uniform hexagonal rosettes; then defining a fourth color halftone screen where a first fundamental vector of the fourth screen shares a fundamental frequency vector with one of said three halftone screens and a second fundamental frequency vector of the fourth screen shares a fundamental frequency vector with a different one of said three color halftone screens.

摘要翻译： 本文公开了一种用于无摩擦色彩半色调打印的方法和装置，其具有多达四个彩色图像分离。 该方法和装置利用多个非正交半色调筛网产生无波纹的输出并形成均匀的周期性玫瑰花结。 该方法和装置提供了为三个半色调屏幕中的每一个定义第一和第二颜色半色调网屏基本频率矢量，使得半色调屏幕组输出形成均匀的六边形玫瑰花结; 然后定义第四色调网屏，其中第四屏幕的第一基本矢量与所述三个半色调屏幕中的一个共享基本频率矢量，并且第四屏幕的第二基频矢量与所述三个网版的不同的一个共享基本频率矢量 彩色半色调屏幕

公开(公告)号：US07046397B2

公开(公告)日：2006-05-16

申请号：US10694494

申请日：2003-10-27

申请人： Robert P. Loce ,  Clara Cuciurean-Zapan

发明人： Robert P. Loce ,  Clara Cuciurean-Zapan

IPC分类号： H04N1/40

CPC分类号： H04N1/4092 ,  G06K15/1826 ,  G06T5/002 ,  G06T5/003 ,  G06T5/30 ,  G06T2207/20192 ,  G06T2207/30144 ,  G06T2207/30176 ,  H04N1/58

摘要： Selective edge softening and selective edge dithering is introduced into an image representation to improve local control where halo problems are expected. Selective areas of dilation are isolated and separately dithered or halftoned, the result of which is then swapped back into or substituted for the stored original image. In this manner misregistration and color plane-to-plane interactions can be compensated for in plural image forming station architecture systems. The same technique is also valuable in monochrome systems as an aid to overcoming edge displacement and slow toner problems when the selective edge softening is selectively applied to edges which are in particular perpendicular to the fast scan direction.

摘要翻译： 选择边缘柔化和选择性边缘抖动被引入到图像表示中以改善局部控制，其中预期光晕问题。 选择性扩张区域是隔离的，并且分开地抖动或半色调，然后将其结果交换回或代替所存储的原始图像。 以这种方式，在多个图像形成站架构系统中可以补偿不对准和彩色平面到平面的相互作用。 当选择性边缘软化选择性地施加到特别是垂直于快速扫描方向的边缘时，相同的技术在单色系统中也是有价值的，以帮助克服边缘位移和缓慢的调色剂问题。

公开(公告)号：US07038816B2

公开(公告)日：2006-05-02

申请号：US10812545

申请日：2004-03-29

申请人： R. Victor Klassen ,  Stephen C. Morgana ,  Robert P. Loce ,  Michael Branciforte ,  Daniel R. Maurer ,  Michael J. Martin ,  Robert M. Lofthus

发明人： R. Victor Klassen ,  Stephen C. Morgana ,  Robert P. Loce ,  Michael Branciforte ,  Daniel R. Maurer ,  Michael J. Martin ,  Robert M. Lofthus

IPC分类号： H04N1/407 ,  H04N1/60 ,  H04N1/29 ,  B41J2/47

CPC分类号： B41J2/471

摘要： A method for rendering a raster output level determines an image position of a pixel of interest (POI) within an image. An intended raster output level, which corresponds to the POI, is received into a processing device. A final raster input level is determined as a function of the image position and the intended raster output level. The final input level and the image position are transmitted to an output device. An actual raster output level is rendered, via the output device, at a position on an output medium corresponding to the image position. The actual raster output level substantially matches the intended raster output level.

摘要翻译： 用于渲染光栅输出电平的方法确定图像内的感兴趣像素（POI）的图像位置。 对应于POI的预期光栅输出电平被接收到处理设备中。 根据图像位置和预期的光栅输出电平确定最终光栅输入电平。 最终输入电平和图像位置被发送到输出设备。 通过输出设备，在对应于图像位置的输出介质上的位置处渲染实际的光栅输出电平。 实际光栅输出电平基本上与预期的光栅输出电平相匹配。

公开(公告)号：US06834124B1

公开(公告)日：2004-12-21

申请号：US09687111

申请日：2000-10-16

申请人： Ying-wei Lin ,  Robert P. Loce

发明人： Ying-wei Lin ,  Robert P. Loce

IPC分类号： G06K940

CPC分类号： G06T5/001 ,  H04N1/40

摘要： An adaptive image enhancement filter includes a template matching module for comparing an observed pixel pattern comprising a target pixel and one or more neighboring pixels to a set of templates to determine if the observed pixel pattern matches any of the templates. The template matching module generates a match identifier signal indicating which of the templates, if any, the observed pixel pattern is found to match. Based on this match identifier, a signal generation module provides an enhanced output signal for the target pixel. The template matching and/or the signal generation modules can be independently modified to adapt to changing conditions as identified by signals identifying image attributes and marking process attributes.

摘要翻译： 自适应图像增强滤波器包括模板匹配模块，用于将包括目标像素和一个或多个相邻像素的观察像素图案与一组模板进行比较，以确定观察到的像素图案是否匹配任何模板。 模板匹配模块生成匹配标识符信号，指示哪个模板（如果有的话）发现观察到的像素图案匹配。 基于该匹配标识符，信号生成模块为目标像素提供增强的输出信号。 可以独立地修改模板匹配和/或信号生成模块以适应由识别图像属性和标记处理属性的信号所识别的变化的条件。

公开(公告)号：US06816269B1

公开(公告)日：2004-11-09

申请号：US09666706

申请日：2000-09-21

申请人： Robert P. Loce ,  Yeqing Zhang ,  Martin E. Banton ,  Nancy B. Goodman ,  Susan J. Zoltner ,  Steve P. Hoover

发明人： Robert P. Loce ,  Yeqing Zhang ,  Martin E. Banton ,  Nancy B. Goodman ,  Susan J. Zoltner ,  Steve P. Hoover

IPC分类号： G06F1500

CPC分类号： H04N1/047 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/02439 ,  H04N2201/04787 ,  H04N2201/04794

摘要： A registration system for image data in a binary image path includes a registration parameter source, such as a preprogrammed memory or a dynamic device, which provides registration parameters to correct for registration errors from a predetermined reference likely or predicted to occur during image output. A warping processor is in data communication with the registration parameter source which applies a selected registration parameter to an element of the image data resulting in a warped data element, minimizing the effects of the registration error. The system optionally includes an image reducing device which receives groups of high addressable binary image data and converts them to a single pixel. The pixel is then provided to the warping processor. The warping processor applies the selected registration parameter, either static or dynamically selected, from the registration parameter source to the averaged single pixel producing a warped data element. The warped data element is then optionally provided to a tone reproduction curve calibrator which adjusts for darkness errors induced by the warping or displacement of the warped data element. The calibrated pixel is then re-rendered by a processor which processes the calibrated pixel back into a plurality of print-ready data elements. The processor estimates quantization errors induced by the warping of the pixel positioning and disperses that error to following pixels. The print-ready data elements are provided to an image output terminal which produces a physical representation of the original binary image.

公开(公告)号：US06438273B1

公开(公告)日：2002-08-20

申请号：US09221285

申请日：1998-12-23

申请人： Robert P. Loce ,  Jeffrey D. Kingsley

发明人： Robert P. Loce ,  Jeffrey D. Kingsley

IPC分类号： G06K932

CPC分类号： H04N1/40068 ,  G06T5/20 ,  H04N1/40037

摘要： The present invention is a method and apparatus for improving the appearance of electronic images, and more specifically, to the efficient use of template rotation within a template matching process to enhance such images. The invention reduces the number of entries that are stored in a look up table by eliminating identical patterns that differ only by the angle at which they are output. The appropriate templates are then rotated it by the required angle for output subsequent to their retrieval from the lookup table.

摘要翻译： 本发明是一种用于改善电子图像的外观的方法和装置，更具体地，涉及在模板匹配过程中有效利用模板旋转以增强这些图像。 本发明通过消除不同于其输出角度的相同图案来减少存储在查找表中的条目的数量。 然后将合适的模板旋转所需的角度，以便在从查找表检索之后输出。