公开(公告)号：JP2002252784A

公开(公告)日：2002-09-06

申请号：JP2001364212

申请日：2001-11-29

Applicant: XEROX CORP

Inventor： KLASSEN R VICTOR ,  BALA RAJA

IPC: B41J5/30 ,  B41J2/525 ,  G06T1/00 ,  H04N1/46 ,  H04N1/60

Abstract: PROBLEM TO BE SOLVED: To reduce the memory consumption while maintaining the accuracy of image transformation or enhancing it furthermore. SOLUTION: A hashing table is used to store transformation information, a set of 1st color space parameters are received for transformation, a hashing key is generated from the set of the 1st color pace parameters, a cell index is generated by the hashing key in the hashing function, using the cell index accesses the transformation data in the hashing table, and in a step of transforming the set of the 1st color space parameters into a set of 2nd color space parameters on the basis of accessed transformation data so as to transform color description from the 1st color space defined by the 1st color space parameters into the 2nd color space defined by the 2nd color space parameters.

公开(公告)号：JP2011050055A

公开(公告)日：2011-03-10

申请号：JP2010182871

申请日：2010-08-18

Applicant: Xerox Corp ,  ゼロックス コーポレイションXerox Corporation

Inventor： ESCHBACH REINER ,  MALTZ MARTIN S ,  BALA RAJA ,  ZHAO YONGHUI

IPC: H04N1/387 ,  B41J29/00 ,  B41J29/38 ,  B42D15/00 ,  B42D15/10 ,  G06F3/12 ,  G06T1/00

CPC classification number: G07D7/04 ,  G07D7/005 ,  Y10T428/24835

Abstract: PROBLEM TO BE SOLVED: To provide a document in which a mark is embedded without using any special ink to be used by UV or IR1. SOLUTION: A document may include: a non-magnetic substrate; a first colorant mixture 300 printed as a first image upon the substrate and having a character of high magnetic contrast in relation to the substrate; and a second colorant mixture 301 printed as a second image upon the substrate in substantially close spatial proximity to the printed first colorant mixture, and having a character of low visual contrast with respect to the first colorant mixture 300, such that the resultant printed substrate does not reveal the first image to the human eye but will reveal a magnetic mark, which is identifiable when checked using a magnetic image reader, as a magnetic mark. COPYRIGHT: (C)2011,JPO&INPIT

Abstract translation: 要解决的问题：提供其中嵌入标记的文件，而不使用由UV或IR1使用的任何特殊墨水。 解决方案：文档可以包括：非磁性基板; 在基板上印刷为第一图像的第一着色剂混合物300，并且具有相对于基板的高磁性对比度的特征; 以及第二着色剂混合物301，其基本上紧密地印刷在印刷的第一着色剂混合物附近，并且具有相对于第一着色剂混合物300具有低视觉对比度的特征，作为第二图像印刷在基底上，使得所得到的印刷基底 不向人眼露出第一幅图像，但会显示磁标记，当使用磁性图像读取器进行检查时，该标记可以被识别为磁标记。 版权所有（C）2011，JPO＆INPIT

公开(公告)号：JP2009171582A

公开(公告)日：2009-07-30

申请号：JP2009005005

申请日：2009-01-13

Applicant: Xerox Corp ,  ゼロックス コーポレイションXerox Corporation

Inventor： BALA RAJA ,  WANG SHEN-GE ,  ESCHBACH REINER

IPC: H04N1/387 ,  B41J5/30 ,  G06T1/00 ,  H04N1/405 ,  H04N1/52

CPC classification number: H04N1/44 ,  H04N1/387 ,  H04N1/405 ,  H04N1/4055 ,  H04N1/52

Abstract: PROBLEM TO BE SOLVED: To provide a method of digital watermark encryption setup to combine principles of a fluorescence mark and a correlation mark so that a watermark is more clearly observed when a security check of a document is performed. SOLUTION: Image data are modified by phase-shifting a part of halftone cells in at least one of halftone images relative to the other halftone image to encode a watermark in the portion of a document so that at least one phase-shifted halftone image includes a phase-shifted region and a non phase-shifted region. Using the modified image data, the portion of the document is printed on a substrate that is lighted in fluorescence when exposed to a UV illumination. The printed portion of the document includes a first printed pattern generated from the phase-shifted region and a second printed pattern generated from the non phase-shifted region. The first and second patterns in the printed portion of the document appear substantially similar when the portion of the document is viewed in visible light, and appear differently when the portion of the document is viewed in UV light so that the watermark encoded in the modified image data is perceptible when the portion of the document is viewed in UV light and is concealed when the portion of the document is viewed in visible light. COPYRIGHT: (C)2009,JPO&INPIT

Abstract translation: 要解决的问题：提供一种数字水印加密设置的方法，以组合荧光标记和相关标记的原理，使得当执行文档的安全检查时更清楚地观察到水印。 解决方案：通过相对于另一个半色调图像在半色调图像中的至少一个中相移一部分半色调细胞来修改图像数据，以在文档的该部分中编码水印，使得至少一个相移半色调 图像包括相移区域和非相移区域。 使用经修改的图像数据，当暴露于UV照射时，文档的该部分被印刷在被荧光照明的基底上。 文档的打印部分包括从相移区域产生的第一印刷图案和从非相移区域产生的第二印刷图案。 当在可见光中观看文档的部分时，文档的打印部分中的第一和第二图案显示为基本相似，并且当在UV光中观看文档的部分时出现不同的图像，使得编码在修改图像中的水印 当文件的部分在紫外线中观看时，数据是可察觉的，并且当文件的可见光部分被观察时被隐藏。 版权所有（C）2009，JPO＆INPIT

公开(公告)号：JP2007331384A

公开(公告)日：2007-12-27

申请号：JP2007122478

申请日：2007-05-07

Applicant: Xerox Corp ,  ゼロックス コーポレイションXerox Corporation

Inventor： BALA RAJA ,  ESCHBACH REINER

IPC: B42D15/10 ,  D21H21/48

CPC classification number: B41M3/144 ,  Y10T428/24802

Abstract: PROBLEM TO BE SOLVED: To provide detection of forgery, illegal change and/or duplicate of a document. SOLUTION: A fluorescent mark indicator is a first colorant 1 printed as an image on a substrate and a paper substrate containing a brightening agent. The first colorant has a property of strongly suppressing fluorescece of the substrate and a property of a low luminance contrast to the substrate under normal illumination and when properly exposed to an ultraviolet rays light source, as a pigment substrate image as a result generates an image capable of being clearly distinguished as a fluorescent mark, spacially substantially approaches the first colorant 1 to be printed, a second colorant 2 to be printed as an image on the substrate, is provided. COPYRIGHT: (C)2008,JPO&INPIT

Abstract translation: 要解决的问题：提供对文件的伪造，非法更改和/或复制的检测。 荧光标记指示器是作为图像印刷在基材上的第一着色剂1和含有增亮剂的纸基材。 第一着色剂具有强烈抑制基材荧光的性质，并且在正常照明下具有与基板的低亮度对比度的性质，并且当适当地暴露于紫外线光源时，作为颜料基底图像，结果产生能够 被明确区分为荧光标记，空间上基本上接近待印刷的第一着色剂1，将要印刷在基底上的图像的第二着色剂2。 版权所有（C）2008，JPO＆INPIT

公开(公告)号：JP2007306561A

公开(公告)日：2007-11-22

申请号：JP2007122479

申请日：2007-05-07

Applicant: Xerox Corp ,  ゼロックス コーポレイションXerox Corporation

Inventor： BALA RAJA ,  ESCHBACH REINER

IPC: H04N1/46 ,  G06T1/00 ,  H04N1/387 ,  H04N1/40 ,  H04N1/60

CPC classification number: B41M3/144 ,  B42D25/29 ,  B42D25/333 ,  B42D25/387

Abstract: PROBLEM TO BE SOLVED: To provide detection of the counterfeiting, illegal alteration, and/or copying of a document. SOLUTION: A fluorescent mark indicator comprising a substrate containing optical brightening agents, a first spatial color pattern and a second spatial color pattern. The first spatial pattern is comprised of a first colorant mixture and a second colorant mixture in a first spatial pattern and printed as an image upon the substrate, and has as characteristics a property of high suppression of substrate fluorescence. The second spatial color pattern is further comprised of a third colorant mixture and a forth colorant mixture in a second spatial pattern, and printed as an image upon the substrate in close spatial proximity to the printed first colorant mixture pattern. Furthermore, the second spatial color pattern has a property of low suppression of substrate fluorescence and a property of low contrast against the first spatial color pattern, the resultant printed substrate image suitably exposed to an ultra-violet light source yielding a discernable pattern as a fluorescent mark. COPYRIGHT: (C)2008,JPO&INPIT

Abstract translation: 要解决的问题：提供文件的伪造，非法更改和/或复制的检测。 解决方案：一种荧光标记指示器，包括含有荧光增白剂的基底，第一空间颜色图案和第二空间颜色图案。 第一空间图案由第一空间图案中的第一着色剂混合物和第二着色剂混合物组成，并且作为图像印在基板上，并具有高的底物荧光抑制特性。 第二空间颜色图案还包括第三着色剂混合物和第二空间图案中的第四着色剂混合物，并且在基板上印刷成与印刷的第一着色剂混合物图案紧密地空间接近的图像。 此外，第二空间颜色图案具有对基底荧光的抑制低的特性和对第一空间颜色图案的低对比度的性质，所得到的印刷基板图像适当地暴露于紫外光源，从而产生可辨别的图案作为荧光 标记。 版权所有（C）2008，JPO＆INPIT

公开(公告)号：JP2006297932A

公开(公告)日：2006-11-02

申请号：JP2006107320

申请日：2006-04-10

Applicant: Xerox Corp ,  ゼロックス コーポレイションXerox Corporation

Inventor： VANDUYN ROBERT M ,  BALA RAJA

IPC: B41J2/525 ,  G03G15/00

CPC classification number: H04N1/6033

Abstract: PROBLEM TO BE SOLVED: To provide a device and a method for visual gray balance calibration of an image formation system.
SOLUTION: The gray balance calibration system comprises a printer which can be calibrated and a calibration sheet 160 which can be printed. The printable calibration sheet includes at least one calibration reference segment printed on the sheet and one or more printing space determined on the sheet. The at least one calibration segment includes one or more colorants which are selected in advance on the printable sheet. The one or more determined printing spaces are adjacent to the at least one calibration segment. The one or more determined printing spaces is disposed so as to undergo printing of a color pattern from the calibrated printer.
COPYRIGHT: (C)2007,JPO&INPIT

Abstract translation: 要解决的问题：提供一种用于图像形成系统的视觉灰度平衡校准的装置和方法。

解决方案：灰平衡校准系统包括可校准的打印机和可以打印的校准片160。 可打印的校准页包括打印在纸上的至少一个校准参考段和在纸上确定的一个或多个打印空间。 所述至少一个校准段包括预先在可印刷片材上选择的一种或多种着色剂。 所述一个或多个确定的打印空间与所述至少一个校准段相邻。 设置一个或多个确定的打印空间以便从校准的打印机进行彩色图案的打印。 版权所有（C）2007，JPO＆INPIT

公开(公告)号：JP2005269639A

公开(公告)日：2005-09-29

申请号：JP2005070269

申请日：2005-03-14

Applicant: Xerox Corp ,  ゼロックス コーポレイションXerox Corporation

Inventor： BALA RAJA ,  ESCHBACH REINER

IPC: G03F3/08 ,  G06K9/00 ,  G06T1/00 ,  G06T5/00 ,  H04N1/40 ,  H04N1/409 ,  H04N1/46 ,  H04N1/60 ,  H04N9/64

CPC classification number: H04N1/40012 ,  H04N5/208 ,  H04N9/77

Abstract: PROBLEM TO BE SOLVED: To provide a method and system for improving the quality of gray scale images created from color images.
SOLUTION: A high-pass filter is applied to at least one chrominance component of a color image to compute at least one chrominance component which has undergone high-pass filtering. On the basis of the chrominance component a brightness component of the color image is adjusted.
COPYRIGHT: (C)2005,JPO&NCIPI

Abstract translation: 要解决的问题：提供一种用于改善由彩色图像创建的灰度图像的质量的方法和系统。 解决方案：将高通滤波器应用于彩色图像的至少一个色度分量，以计算经过高通滤波的至少一个色度分量。 基于色度分量，调整彩色图像的亮度分量。 版权所有（C）2005，JPO＆NCIPI

公开(公告)号：JP2010217886A

公开(公告)日：2010-09-30

申请号：JP2010051324

申请日：2010-03-09

Applicant: Xerox Corp ,  ゼロックス コーポレイションXerox Corporation

Inventor： CHAPMAN EDWARD ,  ESCHBACH REINER ,  WANG SHEN-GE ,  BALA RAJA

IPC: G03G21/04 ,  B41J29/00 ,  G03G15/01 ,  H04N1/387 ,  H04N1/46 ,  H04N1/60

CPC classification number: H04N1/60 ,  B41M3/148

Abstract: PROBLEM TO BE SOLVED: To provide a high resolution scalable gloss effect. SOLUTION: A method for defining a gloss effect in a printed document includes a step of printing a document region using first and second colorant combinations. The first colorant combination defines a first colorant stack height and the second colorant combination defines a second colorant stack height which is different from the first colorant stack height. As such, the document region has a first appearance, when viewed straight and has a second appearance, when viewed at an angle. In one example, the first colorant combination includes a black colorant that results in an one-layer stack height, and the second colorant combination includes cyan, magenta, and yellow (CMY) colorants that results in a three-layer stack height. COPYRIGHT: (C)2010,JPO&INPIT

Abstract translation: 要解决的问题：提供高分辨率可扩展的光泽效果。 解决方案：用于在打印文档中定义光泽效果的方法包括使用第一和第二着色剂组合打印文档区域的步骤。 第一着色剂组合限定第一着色剂堆叠高度，并且第二着色剂组合限定与第一着色剂堆叠高度不同的第二着色剂堆叠高度。 这样，当以一个角度观看时，原稿区域具有第一外观，当被直视并具有第二外观时。 在一个实例中，第一着色剂组合包括导致单层堆叠高度的黑色着色剂，并且第二着色剂组合包括导致三层堆叠高度的青色，品红色和黄色（CMY）着色剂。 版权所有（C）2010，JPO＆INPIT

公开(公告)号：JP2008206148A

公开(公告)日：2008-09-04

申请号：JP2008026041

申请日：2008-02-06

Applicant: Xerox Corp ,  ゼロックス コーポレイションXerox Corporation

Inventor： BALA RAJA ,  ESCHBACH REINER

IPC: H04N1/387 ,  B41J21/00 ,  G03G21/00 ,  G06T1/00

CPC classification number: B41M3/144 ,  B41M3/14

Abstract: PROBLEM TO BE SOLVED: To provide a system for embedding information in documents easily and at low cost. SOLUTION: A substrate is provided (510) and background color(s) are selected (520). UV mark colors for a mask are selected (530), such that the UV mark colors exhibit low contrast against the background color(s) under normal illumination and exhibit high contrast against the background color(s) under UV illumination. One or more distraction colors are also selected (540), such that the distraction color(s) exhibit low contrast against the background color(s) under UV illumination and exhibit high contrast against the background color(s) under normal illumination. A distraction patter is selected (550). A mark is printed (560). COPYRIGHT: (C)2008,JPO&INPIT

Abstract translation: 要解决的问题：提供一种容易且低成本地将信息嵌入文档的系统。 解决方案：提供衬底（510）并选择背景颜色（520）。 选择掩模的UV标记颜色（530），使得UV标记颜色在正常照明下对背景颜色表现出低对比度，并且在UV照射下对背景颜色呈现高对比度。 还选择了一种或多种分散颜色（540），使得分散颜色在UV照射下表现出与背景颜色的低对比度，并且在正常照明下显示与背景颜色的高对比度。 选择分心模式（550）。 打印标记（560）。 版权所有（C）2008，JPO＆INPIT

公开(公告)号：JP2007208977A

公开(公告)日：2007-08-16

申请号：JP2007014052

申请日：2007-01-24

Applicant: Xerox Corp ,  ゼロックス コーポレイションXerox Corporation

Inventor： WANG SHEN-GE ,  BALA RAJA ,  MONGA VISHAL

IPC: H04N1/405 ,  B41J2/525 ,  G06T3/40 ,  H04N1/407 ,  H04N1/60

CPC classification number: H04N1/4078 ,  H04N1/40006

Abstract: PROBLEM TO BE SOLVED: To compensate a color drift of halftone by reducing a prediction error in a color two-by-two printer model applied to a xerographic printer.
SOLUTION: A method for compensating a color drift in a printer includes for each color channel, determining a first true tone response curve (TRC) for a color channel when the printer is in a first state; determining a first estimated tone response curve for the color channel when the printer is in the first state; determining a second estimated tone response curve for the color channel when the printer is in a second, color-drifted state relative to the first state; and mathematically predicting a second true tone response curve for the color channel using the first true tone response curve, the first estimated tone response curve, and the second estimated tone response curve.
COPYRIGHT: (C)2007,JPO&INPIT

Abstract translation: 要解决的问题：通过减少应用于静电印刷机的彩色二乘打印机模型中的预测误差来补偿半色调的颜色漂移。 解决方案：一种用于补偿打印机中颜色漂移的方法，包括：对于每个颜色通道，当打印机处于第一状态时，确定用于颜色通道的第一真实色调响应曲线（TRC）; 当所述打印机处于所述第一状态时，确定所述颜色通道的第一估计色调响应曲线; 当所述打印机处于相对于所述第一状态的第二颜色漂移状态时，确定所述颜色通道的第二估计色调响应曲线; 以及使用所述第一真实音调响应曲线，所述第一估计音响应曲线和所述第二估计音响响应曲线，数学地预测所述颜色通道的第二真正音调响应曲线。 版权所有（C）2007，JPO＆INPIT