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71. 发明授权

US08654402B2 Pitch based high quantization halftone dot linearization for rendering high quality color images 有权
标题翻译：基于间距的高量化半色调点线性化，用于渲染高质量彩色图像
公开(公告)号：US08654402B2
公开(公告)日：2014-02-18
申请号：US12472689
申请日：2009-05-27
申请人： Lalit Keshav Mestha , Richard Leighton Howe , Raja Bala
发明人： Lalit Keshav Mestha , Richard Leighton Howe , Raja Bala
IPC分类号： G06K15/00
CPC分类号： G06K15/00 , H04N1/52 , H04N1/6027 , H04N1/6033
摘要： A device, system, and method for reducing the pitch-to-pitch variation of color using pitch-based linearization of halftone screens are presented. A selection of images is printed at different pitches, and each image is measured and tracked with its pitch. Pitch-based TRCs are constructed using patches, which may be scheduled during print run or during machine diagnostic process and halftone dots are constructed and uploaded in the image path for each pitch. The updated dots are then used to produce a linearized halftone image for transfer to a print surface which results in improved color balance.
摘要翻译：提出了使用基于色调的网版线性化来减少颜色间距变化的装置，系统和方法。以不同的间距打印图像的选择，并且每个图像被测量并用其间距进行跟踪。基于间距的TRC使用补丁构建，其可以在打印运行期间或在机器诊断过程期间被调度，并且在每个间距的图像路径中构造并上传半色调点。然后更新的点用于产生线性化的半色调图像以转印到打印表面，这导致改善的色彩平衡。

72. 发明授权

US08576418B2 Method for dynamic optimization of refinement patches for color printer characterization 有权
标题翻译：用于彩色打印机表征的细化贴片的动态优化方法
公开(公告)号：US08576418B2
公开(公告)日：2013-11-05
申请号：US12965959
申请日：2010-12-13
申请人： Raja Bala , Yonghui Zhao
发明人： Raja Bala , Yonghui Zhao
IPC分类号： G06F15/00 , H04N1/00 , H04N1/36
CPC分类号： H04N1/6033
摘要： A method generates a set of color patches that can be used to characterize a color printer. An accurate reference printer model is selected. A base set of calibration patches is printed and measured. The measurements are used to generate a model that can be used to predict the color produced by the reference printer for any combination of its colorants. The base set of patches is supplemented by a set of patches chosen to reduce the maximum color error produced by using the model compared to the predictions of a reference printer model. The supplemented set of patches is used to generate a more accurate model of the printer. The supplemented set of patches is used to recalibrate other instances of the printer.
摘要翻译：一种方法生成一组可用于表征彩色打印机的色块。选择精确的参考打印机型号。打印和测量基准的校准贴片。测量用于生成可用于预测参考打印机为其着色剂的任何组合产生的颜色的模型。补充的基础组补充了一组选择，以减少与参考打印机模型的预测相比使用模型产生的最大颜色误差。补充的一组补丁用于生成更准确的打印机型号。补充的补丁集用于重新校准打印机的其他实例。

73. 发明申请

US20130182946A1 METHODS AND SYSTEM FOR ANALYZING AND RATING IMAGES FOR PERSONALIZATION 有权
标题翻译：用于分析和评估个性化图像的方法和系统
公开(公告)号：US20130182946A1
公开(公告)日：2013-07-18
申请号：US13349751
申请日：2012-01-13
申请人： Raja Bala , Zhigang Fan , Hengzhou Ding , Jan P. Allebach , Charles A. Bouman , Reuven J. Sherwin
发明人： Raja Bala , Zhigang Fan , Hengzhou Ding , Jan P. Allebach , Charles A. Bouman , Reuven J. Sherwin
IPC分类号： G06K9/46 , G06K9/62
CPC分类号： G06K9/00671 , G06K9/3258
摘要： As set forth herein, a computer-implemented method facilitates pre-analyzing an image and automatically suggesting to the user the most suitable regions within an image for text-based personalization. Image regions that are spatially smooth and regions with existing text (e.g. signage, banners, etc.) are primary candidates for personalization. This gives rise to two sets of corresponding algorithms: one for identifying smooth areas, and one for locating text regions. Smooth regions are found by dividing the image into blocks and applying an iterative combining strategy, and those regions satisfying certain spatial properties (e.g. size, position, shape of the boundary) are retained as promising candidates. In one embodiment, connected component analysis is performed on the image for locating text regions. Finally, based on the smooth and text regions found in the image, several alternative approaches are described herein to derive an overall metric for “suitability for personalization.”
摘要翻译：如本文所述，计算机实现的方法有助于预分析图像并且自动地向用户建议图像内的最合适的区域用于基于文本的个性化。具有空间平滑的图像区域和具有现有文本的区域（例如标牌，横幅等）是用于个性化的主要候选者。这产生了两组相应的算法：一种用于识别平滑区域，一种用于定位文本区域。通过将图像划分成块并应用迭代组合策略来找到平滑区域，并且满足某些空间属性（例如，边界的大小，位置，形状）的那些区域被保留为有希望的候选者。在一个实施例中，对用于定位文本区域的图像执行连接分量分析。最后，基于图像中发现的平滑和文本区域，本文描述了几种替代方法，以得出“适合个性化”的总体度量。

74. 发明授权

US08305667B2 Systems and methods for forming a tint of a spot color 有权
标题翻译：用于形成专色色调的系统和方法
公开(公告)号：US08305667B2
公开(公告)日：2012-11-06
申请号：US12424586
申请日：2009-04-16
申请人： Edul N. Dalal , Wencheng Wu , Raja Bala
发明人： Edul N. Dalal , Wencheng Wu , Raja Bala
IPC分类号： H04N1/46
CPC分类号： H04N1/603
摘要： Systems and methods are provided for rendering tints of spot color objects or target colors between a spot color and a second color in image forming devices. In particular the systems and method provided allow for a sweep of a spot color to be rendered accurately, without discontinuities when transitioning from the tint to the solid spot color. The systems and method will prevent discontinuities even if the solid spot color has been modified by a user.
摘要翻译：提供了系统和方法，用于在图像形成装置中渲染专色对象或专色和第二颜色之间的目标颜色的色调。特别地，所提供的系统和方法允许专色的扫描被精确地渲染，而从色调转变为固体斑点颜色时没有不连续性。即使固体斑点颜色已被用户修改，系统和方法也将防止不连续性。

75. 发明申请

US20120273562A1 SYSTEMS AND METHODS FOR USING MACHINE READABLE CODES TO STORE AND RETRIEVE REVERSIBLE WRITE ERASEABLE PAPER DOCUMENTS 有权
标题翻译：使用机器可读代码存储并检索可逆写入可擦除文件的系统和方法
公开(公告)号：US20120273562A1
公开(公告)日：2012-11-01
申请号：US13094516
申请日：2011-04-26
申请人： George Cunha Cardoso , Raja Bala , Tonya L. Love , Francis K. Tse , Fritz F. Ebner , Michael R. Furst
发明人： George Cunha Cardoso , Raja Bala , Tonya L. Love , Francis K. Tse , Fritz F. Ebner , Michael R. Furst
IPC分类号： G06F17/00 , G06K19/00
CPC分类号： G06F17/30011 , B41J3/4076 , B41M2205/18 , G03C11/02 , G06F17/30725
摘要： An embodiment generally relates to systems and methods for electronically auto-filing and retrieving erasable paper document documents configured for ultraviolet (UV) imaging. A device can embed a machine readable code on an erasable paper document, or can detect a machine readable code preprinted on the document. An electronic version of the erasable paper document along with the machine readable code can be stored in a database. When the machine readable code is later detected on a rendered document, the electronic version corresponding to the machine readable code can be retrieved from storage. The erasable paper document can be re-rendered using the retrieved electronic version either as a new erasable paper document, for display to the user, or other renderings.
摘要翻译：一个实施方案通常涉及用于电子自动归档和检索配置用于紫外线（UV）成像的可擦除纸质文件的系统和方法。设备可以将机器可读代码嵌入到可擦除的纸质文档上，或者可以检测预先印在文档上的机器可读代码。可擦写纸文件的电子版本与机器可读代码可以存储在数据库中。当随后在呈现的文档上检测到机器可读代码时，可以从存储器检索对应于机器可读代码的电子版本。可以使用检索到的电子版本作为新的可擦除纸质文档来重新呈现可擦除的纸质文档，以供显示给用户或其他渲染。

76. 发明授权

US08077352B2 GAMUT aim and GAMUT mapping method for spatially varying color lookup tables 有权
标题翻译：用于空间变化颜色查找表的GAMUT目标和GAMUT映射方法
公开(公告)号：US08077352B2
公开(公告)日：2011-12-13
申请号：US12359649
申请日：2009-01-26
申请人： Edgar Bernal , Robert P Loce , Raja Bala
发明人： Edgar Bernal , Robert P Loce , Raja Bala
IPC分类号： G06F15/00
CPC分类号： H04N1/60 , H04N1/409
摘要： An image processing apparatus, program product, and method determine an achievable gamut achievable by the imaging engine or engines for all spatial locations of an output image, or all utilized print engines. A reference gamut is calculated which is any gamut containing the achievable gamut. A gamut mapping is used to map gamuts from the mean gamut to the achievable gamut, and a set of transformations is calculated for each of a set of input colors to a set of target colors selected from colors in the achievable gamut. Values for a received digital image are transformed for each image pixel or clusters of pixels based on the calculated set of transformations. Output images are generated based on the transformed values.
摘要翻译：图像处理装置，程序产品和方法确定由输出图像或所有使用的打印引擎的所有空间位置的成像引擎或引擎可实现的可实现色域。计算参考色域，其中包含可实现色域的任何色域。色域映射用于将色域从均匀色域映射到可实现色域，并且将一组输入颜色中的每一个计算为从可实现色域中的颜色中选择的一组目标颜色的一组变换。基于所计算的变换集合，针对每个图像像素或像素簇变换接收数字图像的值。基于变换后的值生成输出图像。

77. 发明申请

US20110286015A1 FINDING A LOCUS OF COLORANT FORMULATIONS THAT PRODUCES A DESIRED COLOR 有权
标题翻译：找到产生所需颜色的颜色配方的位置
公开(公告)号：US20110286015A1
公开(公告)日：2011-11-24
申请号：US12782362
申请日：2010-05-18
申请人： Martin S. Maltz , Raja Bala , Yonghui Zhao , Matthew Frederick Hoffmann
发明人： Martin S. Maltz , Raja Bala , Yonghui Zhao , Matthew Frederick Hoffmann
IPC分类号： H04N1/60 , G06K9/00
CPC分类号： H04N1/6019
摘要： What is disclosed is a novel system and method for converting a set of L*a*b* values to CMYK color space in which all CMYK formulations that produce each L*a*b* value are found and enumerated. The CMYK formulations are found through a search algorithm starting with the lightest L*a*b* values then visiting neighboring L*a*b* values until the entire L*a*b* color set has been processed. The CMYK space is tessellated into a set of pentahedrons, and for each L*a*b* value, an enclosing pentahedron is found and the CMYK values corresponding to where the locus of this point penetrates each surface is recorded. Adjacent pentahedrons are then visited and this process continues until the gamut boundary is reached. The result is a piecewise linear representation of the CMYK locus containing all values that will give the target L*a*b* value. The present method provides a flexible and powerful approach for solving color management problems.
摘要翻译：所公开的是用于将一组L * a * b *值转换为CMYK颜色空间的新型系统和方法，其中发现并列举了产生每个L * a * b *值的所有CMYK公式。通过搜索算法找到CMYK公式，从最轻的L * a * b *值开始，然后访问相邻的L * a * b *值，直到整个L * a * b *颜色集合被处理。 CMYK空间被镶嵌成一组五面体，并且对于每个L * a * b *值，找到包围的五面体，并且记录与该点的轨迹穿过每个表面的位置相对应的CMYK值。然后访问相邻的五面体，并且该过程继续，直到达到色域边界。结果是包含将给出目标L * a * b *值的所有值的CMYK轨迹的分段线性表示。本方法为解决颜色管理问题提供了灵活而强大的方法。

78. 发明授权

US08035688B2 Method, system and apparatus for jointly calibrating color digital cameras and monitors 有权
标题翻译：用于联合校准彩色数码相机和显示器的方法，系统和设备
公开(公告)号：US08035688B2
公开(公告)日：2011-10-11
申请号：US11880052
申请日：2007-07-19
申请人： David Snyderman , Geoffrey John Woolfe , Raja Bala
发明人： David Snyderman , Geoffrey John Woolfe , Raja Bala
IPC分类号： H04N17/00
CPC分类号： H04N9/73 , G01J3/10 , G01J3/50 , G01J3/506 , G01J3/524 , G09G2320/0693 , H04N17/02
摘要： A computer program product and method for calibrating and characterizing a color display perform calibrating and characterizing steps. A light source is operated in order to emit light from one or more light emitters on the light source. A color capture device, e.g., a digital camera, is calibrated and characterized based on the emitted light. Then, color images are displayed on the color display and captured on the color capture device. The color display is calibrated and characterized based on the captured color images. Computer program instructions are recorded on the computer readable medium, and are executable by a processor, for performing the calibrating and characterizing steps. A method for generating a controlled light source includes displaying light source selections to a user and receiving a user light source selection. Selected light emitters produce a light output matching the user light source selection.
摘要翻译：用于校准和表征彩色显示器的计算机程序产品和方法执行校准和表征步骤。操作光源以便从光源上的一个或多个光发射器发射光。基于发射的光来校准和表征彩色捕获装置，例如数字照相机。然后，彩色图像被显示在彩色显示器上并捕获在彩色捕获装置上。基于捕获的彩色图像校准和表征彩色显示。计算机程序指令被记录在计算机可读介质上，并且可由处理器执行，用于执行校准和表征步骤。用于产生受控光源的方法包括向用户显示光源选择并接收用户光源选择。所选择的发光体产生与用户光源选择相匹配的光输出。

79. 发明申请

US20100302594A1 REAL-TIME IMAGE PERSONALIZATION 有权
标题翻译：实时图像个性化
公开(公告)号：US20100302594A1
公开(公告)日：2010-12-02
申请号：US12475748
申请日：2009-06-01
申请人： Edward Chapman , Hengzhou Ding , Reiner Eschbach , Raja Bala
发明人： Edward Chapman , Hengzhou Ding , Reiner Eschbach , Raja Bala
IPC分类号： G06K15/00 , G06K9/32
CPC分类号： G06T11/60
摘要： Systems and methods are described that facilitate real-time personalization of an electronic image by overlaying a text string on a planar surface of an object in the electronic image. A linear or affine transform is executed on a selected text string to position the text string in a reference rectangle or text box. A non-linear or projective transform is applied to the rectangular text box to project the box into a user-defined quadrilateral on the planar surface in the image. A page description language (PDL) file is generated and includes the transformed quadrilateral text box overlaid on the electronic image. At print-time, a database (e.g., a spreadsheet or the like) containing multiple text strings is read, once for each text string, and multiple images are printed. Each printed image has one of the text strings overlaid thereon, on the planar surface defined by the quadrilateral.
摘要翻译：描述了通过将文本串叠加在电子图像中的对象的平面上来促进电子图像的实时个性化的系统和方法。对所选文本字符串执行线性或仿射变换，以将文本字符串定位在引用矩形或文本框中。将非线性或投影变换应用于矩形文本框，以将框投影到图像平面上的用户定义的四边形中。生成页面描述语言（PDL）文件，并且包括覆盖在电子图像上的经变换的四边形文本框。在打印时，读取包含多个文本串的数据库（例如，电子表格等），每个文本串一次，并且打印多个图像。每个打印的图像在由四边形限定的平面上具有覆盖在其上的文本串中的一个。

80. 发明授权

US07760934B2 Color to grayscale conversion method and apparatus utilizing a high pass filtered chrominance component 有权
标题翻译：彩色到灰阶转换方法和利用高通滤波色度分量的装置
公开(公告)号：US07760934B2
公开(公告)日：2010-07-20
申请号：US12058567
申请日：2008-03-28
申请人： Raja Bala , Reiner Eschbach
发明人： Raja Bala , Reiner Eschbach
IPC分类号： G06K9/00
CPC分类号： H04N1/40012 , H04N5/208 , H04N9/77
摘要： A method and apparatus for translating color to grayscale images, wherein at least some pixels of the color image having the same color are mapped to different grays in the grayscale image depending on the spatial surround of each pixel. Further, the method and apparatus may include applying a high pass filter to at least one chrominance component of a color image to generate at least one high pass filtered chrominance component, and adjusting a luminance component of the color image based upon the at least one high pass filtered chrominance component.
摘要翻译：一种用于将颜色转换为灰度图像的方法和装置，其中根据每个像素的空间环绕，具有相同颜色的彩色图像的至少一些像素被映射到灰度图像中的不同灰度。此外，所述方法和装置可以包括将高通滤波器应用于彩色图像的至少一个色度分量以产生至少一个高通滤波色度分量，并且基于至少一个高频来调整彩色图像的亮度分量通过滤色度分量。

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