DECODING OF UV MARKS USING A DIGITAL IMAGE ACQUISITION DEVICE
    111.
    发明申请
    DECODING OF UV MARKS USING A DIGITAL IMAGE ACQUISITION DEVICE 有权
    使用数字图像采集设备解码紫外线标记

    公开(公告)号:US20100040282A1

    公开(公告)日:2010-02-18

    申请号:US12191721

    申请日:2008-08-14

    IPC分类号: G06K9/00

    摘要: A method and system for identifying a fluorescence mark in a printed document includes using an image acquisition device to derive an input digital image that represents a printed document including a background and a fluorescence mark adjacent the background. The input digital image includes multiple color channel digital images, with each color channel digital image comprising a plurality of pixels each defined by a gray value. For each pixel of at least one of the color channel digital images, the gray value is adjusted based upon a variance of adjacent pixel gray values to define a filtered digital image including a plurality of pixels each defined by an adjusted gray value. Some pixels of the filtered digital image correspond to low variance regions of the input digital image and other pixels of the filtered digital image correspond to high variance regions of the input digital image. A binary image is derived that represents the filtered digital image by mapping each adjusted gray value of the filtered image to either a first or second possible binary pixel value. The binary image includes a binary representation of the fluorescence mark and a binary representation of the background. At least one morphological operation is performed on the binary image to adjust the pixel values of the binary representation of the background so that all pixel values of the binary representation of the background are opposite the binary pixel value used for the binary representation of the fluorescence mark. An ASCII character for the binary representation of the fluorescence mark (or each constituent character thereof) can be derived and compared to a known security code to authenticate the printed document.

    摘要翻译: 用于识别印刷文档中的荧光标记的方法和系统包括使用图像获取装置来导出表示包括背景的印刷文档和邻近背景的荧光标记的输入数字图像。 输入数字图像包括多个彩色通道数字图像,每个彩色通道数字图像包括由灰度值定义的多个像素。 对于至少一个颜色通道数字图像的每个像素,基于相邻像素灰度值的方差来调整灰度值,以定义包括由调整的灰度值定义的多个像素的滤波数字图像。 滤波数字图像的一些像素对应于输入数字图像的低方差区域,并且滤波数字图像的其他像素对应于输入数字图像的高方差区域。 导出二进制图像,其通过将滤波图像的每个经调整的灰度值映射到第一或第二可能二进制像素值来表示经滤波的数字图像。 二进制图像包括荧光标记的二进制表示和背景的二进制表示。 对二进制图像执行至少一个形态学操作以调整背景的二进制表示的像素值,使得背景的二进制表示的所有像素值与用于荧光标记的二进制表示的二进制像素值相反 。 可以导出用于荧光标记(或其每个构成字符)的二进制表示的ASCII字符,并将其与已知的安全代码进行比较以验证打印文档。

    Method and apparatus for processing digital images
    112.
    发明授权
    Method and apparatus for processing digital images 失效
    用于处理数字图像的方法和装置

    公开(公告)号:US07646508B2

    公开(公告)日:2010-01-12

    申请号:US11554049

    申请日:2006-10-30

    申请人: Reiner Eschbach

    发明人: Reiner Eschbach

    CPC分类号: H04N1/603 H04N1/6027

    摘要: A method and apparatus to process digital images is described. The method is particularly effective in improving the appearance of digital images that originate in digital cameras and have been pre-processed in the camera.

    摘要翻译: 描述了处理数字图像的方法和装置。 该方法特别有效地改善了数码相机中出现的并在相机中进行了预处理的数字图像的外观。

    UV ENCRYPTION VIA INTELLIGENT HALFTONING
    113.
    发明申请
    UV ENCRYPTION VIA INTELLIGENT HALFTONING 有权
    紫外线加密通过智能冰箱

    公开(公告)号:US20090180152A1

    公开(公告)日:2009-07-16

    申请号:US12013664

    申请日:2008-01-14

    IPC分类号: H04K1/00 G06K9/00

    摘要: A method for encryption of a digital watermark by intelligent halftoning includes receiving image data that define at least a portion of a document to be printed in terms of at least three halftone images corresponding respectively to three printing colorants, each of the three halftone images comprising a plurality of halftone cells. The image data are modified by phase-shifting some of the halftone cells of at least one of the halftone images relative to the other halftone images to encode a watermark within the portion of the document such that the at least one phase-shifted halftone image includes a phase-shifted region and a non-phase-shifted region. The modified image data are used to print the portion of the document on a substrate that will fluoresce when subjected to UV illumination. The printed portion of the document includes a first printed pattern resulting from the phase-shifted region and a second printed pattern resulting from the non-phase-shifted region. The first and second patterns of the printed portion of the document appear substantially similar when the portion of the document is viewed in visible light, and appear dissimilar when the portion of the document is viewed in UV light such that the watermark encoded in the modified image data is perceptible when the portion of the document is viewed in UV light and is hidden when the portion of the document is viewed in visible light.

    摘要翻译: 通过智能半色调对数字水印进行加密的方法包括接收图像数据,该图像数据限定要分别对应于三个打印着色剂的至少三个半色调图像要打印的文档的至少一部分,三个半色调图像中的每一个包括一个 多个半色调细胞。 图像数据通过相对于其他半色调图像相移至少一个半色调图像的半色调单元来对文档的该部分内的水印进行相位改变,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。 经修改的图像数据用于将文档的部分打印在经受UV照射时将发荧光的基底上。 文档的打印部分包括由相移区域产生的第一印刷图案和由非相移区域产生的第二印刷图案。 当文件的部分在可见光中观看时,文档的打印部分的第一和第二图案看起来基本相似,并且当在UV光中观看文档的部分时,显示不相似,使得编码在修改图像中的水印 当文档的部分在紫外光下观看时,数据是可感知的,并且当在可见光中观看文档的部分时,数据被隐藏。

    VARIABLE DATA PERIODIC LINE PATTERNS FOR COMPOSING A FONT SYSTEM
    115.
    发明申请
    VARIABLE DATA PERIODIC LINE PATTERNS FOR COMPOSING A FONT SYSTEM 有权
    用于组合一个系统的可变数据周期线模式

    公开(公告)号:US20080297852A1

    公开(公告)日:2008-12-04

    申请号:US11756375

    申请日:2007-05-31

    IPC分类号: G06K15/00

    CPC分类号: B42D25/29

    摘要: A method and system is provided for generating a variable data differential line pattern font comprising forming a periodic line pattern suitable for tessellation disposition within a printed document and selectively distorting a portion of the periodic line pattern in a predetermined manner wherein the distorting comprises generating a distinguishable font corresponding to the distorting. A plurality of different distinguishable fonts are formed by a corresponding plurality of distorted line patterns, respectively.

    摘要翻译: 提供了一种用于产生可变数据差分线图案字体的方法和系统,包括形成适合于打印文档内的镶嵌布置的周期性线图案,并且以预定方式选择性地扭曲周期线图案的一部分,其中,所述失真包括生成可区分的 字体对应于扭曲。 多个不同的可区分字体分别由对应的多个失真线图案形成。

    Method for run-time streak removal
    118.
    发明授权
    Method for run-time streak removal 有权
    运行时条纹去除方法

    公开(公告)号:US07433539B2

    公开(公告)日:2008-10-07

    申请号:US10993852

    申请日:2004-11-19

    IPC分类号: G06K9/40 G06K9/32

    CPC分类号: H04N1/4097

    摘要: A method for run-time streak removal from a scanned image includes providing a scan line of image data from the scanned image; detecting corrupted data within the scan line; evaluating image data located in a neighborhood before and after the corrupted data on the scan line; if the evaluated image data in the neighborhood is smooth, replacing the corrupted data with image data determined by a linear interpolation process; and else if the evaluated image data in the neighborhood is not smooth, replacing the corrupted data with image data determined by the linear prediction process. Various techniques can be used to evaluate the image data located in the surrounding neighborhood. For example, a filter selection step may be used based on prediction discrepancies.

    摘要翻译: 从扫描图像中去除运行时间条纹的方法包括从扫描图像提供图像数据的扫描线; 检测扫描线内的损坏的数据; 评估位于扫描线上的损坏数据之前和之后的邻域中的图像数据; 如果附近的评估图像数据平滑,则用由线性内插处理确定的图像数据替换损坏的数据; 否则如果附近的评估图像数据不平滑,则用由线性预测处理确定的图像数据替换损坏的数据。 可以使用各种技术来评估位于周边地区的图像数据。 例如,可以基于预测差异来使用滤波器选择步骤。

    Substrate fluorescence mask utilizing a multiple color overlay for embedding information in printed documents
    119.
    发明申请
    Substrate fluorescence mask utilizing a multiple color overlay for embedding information in printed documents 有权
    基板荧光掩模利用多重重叠以便在印刷文件中嵌入信息

    公开(公告)号:US20080199785A1

    公开(公告)日:2008-08-21

    申请号:US11708313

    申请日:2007-02-20

    IPC分类号: G03F1/00

    CPC分类号: B41M3/144 B41M3/14

    摘要: A method is provided for creation of a substrate fluorescence mask having background color(s), UV mark color(s), and distraction color(s), to be printed as an image on a substrate containing optical brightening agents. The method includes selecting one or more UV mark colors for the mask such that the UV mark colors exhibit low contrast against the background color(s) under normal illumination and high contrast against the background color(s) under UV illumination. One or more distraction colors are also selected, 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 pattern, formed from one or more distraction colors, is also selected.

    摘要翻译: 提供了一种用于产生具有背景颜色,UV标记颜色和分散颜色的衬底荧光掩模的方法,作为图像印刷在含有荧光增白剂的衬底上。 该方法包括为掩模选择一个或多个UV标记颜色,使得UV标记颜色在正常照明下对背景颜色显示低对比度,并且在UV照射下对背景颜色显示高对比度。 还选择一种或多种分散颜色,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。 还选择由一种或多种分散颜色形成的分散图案。

    User interface for differential gloss images
    120.
    发明授权
    User interface for differential gloss images 有权
    差分光泽图像的用户界面

    公开(公告)号:US07391537B2

    公开(公告)日:2008-06-24

    申请号:US10952413

    申请日:2004-09-28

    摘要: The present disclosure relates to providing a user interface for the effective generation of differential gloss images. The user is instructed to indicate the base primary image data, and the desired gloss image data. This data may be displayed for verification and position adjustment by superimposition of the gloss image data upon the base image data. In an alternative, the placement information may be inferred from the position of originals upon the scanner or copier platen and the result may or may not be displayed. By selectively applying halftones with different anisotropic structure orientation characteristics to the base primary image data as directed by the desired gloss image data, a differential gloss image file or hardcopy may be provided.

    摘要翻译: 本公开涉及提供用于有效产生差异光泽图像的用户界面。 指示用户指示基本主要图像数据和所需的光泽图像数据。 可以通过将光泽图像数据叠加在基本图像数据上来显示该数据以进行验证和位置调整。 或者,可以从扫描仪或复印机台板上的原稿的位置推断放置信息,并且可以显示或不显示结果。 通过按照期望的光泽图像数据的指示,将具有不同各向异性结构取向特性的半色调选择性地应用于基本主图像数据,可以提供差异光泽图像文件或硬拷贝。