公开(公告)号：US20060072830A1

公开(公告)日：2006-04-06

申请号：US11295405

申请日：2005-12-05

申请人： Ramesh Nagarajan ,  Zhigang Fan ,  Shivang Patel

发明人： Ramesh Nagarajan ,  Zhigang Fan ,  Shivang Patel

IPC分类号： G06K9/62

CPC分类号： H04N19/90 ,  G06K9/00449 ,  G06K9/00463

摘要： A method of indexing images contained in scanned documents, wherein said scanned documents are stored in a repository, includes: for each document to be stored in the repository, dividing the document into a plurality of sections; scanning the plurality of sections; segmenting each scanned segment according to a predetermined coding model into image segment and non-image segments; associating each of the image segments with the document; and generating an index correlating the image segments with the document. The method may further include, at the time of image recall, displaying the index of image segments in a user interface; and responsive to selection of an image segment from the index, displaying the document information associated with the image segment in the user interface.

摘要翻译： 一种对包含在扫描文档中的图像进行索引的方法，其中所述扫描的文档存储在存储库中，包括：对于要存储在存储库中的每个文档，将文档分成多个部分; 扫描多个部分; 根据预定的编码模型将每个扫描的片段分割成图像片段和非图像片段; 将每个图像段与文档相关联; 以及生成将图像片段与文档相关联的索引。 该方法还可以包括在图像调用时在用户界面中显示图像片段的索引; 并且响应于从索引中选择图像片段，在用户界面中显示与图像片段相关联的文档信息。

公开(公告)号：US20060061088A1

公开(公告)日：2006-03-23

申请号：US10947346

申请日：2004-09-23

申请人： Steven Harrington ,  Zhigang Fan ,  Reiner Eschbach ,  Michael Butler ,  Edward Francis ,  Stuart Schweid ,  Shen-ge Wang

发明人： Steven Harrington ,  Zhigang Fan ,  Reiner Eschbach ,  Michael Butler ,  Edward Francis ,  Stuart Schweid ,  Shen-ge Wang

IPC分类号： G09B19/00

CPC分类号： G07D7/206 ,  G07D7/0043

摘要： Systems and methods that allow for anti-counterfeiting marks that carry user information and other data to be embedded into an original coupon design. The marks may be invisible, or visible but difficult to remove. At the receiving sides of the coupons, the embedded data are used to detect fraud and trace back the coupon users.

摘要翻译： 允许将用户信息和其他数据嵌入到原始优惠券设计中的防伪标记的系统和方法。 标记可能是不可见的，或可见的，但很难去除。 在优惠券的接收端，嵌入式数据用于检测欺诈并追踪优惠券用户。

公开(公告)号：US20050286776A1

公开(公告)日：2005-12-29

申请号：US10877302

申请日：2004-06-25

申请人： Yingjun Bai ,  Zhigang Fan ,  Timothy Jacobs

发明人： Yingjun Bai ,  Zhigang Fan ,  Timothy Jacobs

IPC分类号： G06K9/36 ,  H04N1/32

CPC分类号： H04N1/642

摘要： A method of compressing a document includes: acquiring an image of the document, the image represented by pixels; segmenting the image into Mixed Raster Content (MRC) planes including a foreground plane (12) that receives a first portion of the pixels, a background plane (14) that receives a second portion of the pixels, and a selector plane (16) that identifies which of the foreground and background planes the pixels belong to; identifying a geometric shape in at least one of the MRC planes; determining if the identified geometric shape has a substantially uniform color; and, replacing the identified shape when it is determined to have a substantially uniform color with a vector graphic representation of the geometric shape.

摘要翻译： 压缩文档的方法包括：获取文档的图像，由像素表示的图像; 将图像分割成包含接收像素的第一部分的前景平面（12）的混合光栅内容（MRC）平面，接收像素的第二部分的背景平面（14）以及选择器平面（16），其中， 识别像素属于哪个前景和背景平面; 识别所述MRC平面中的至少一个中的几何形状; 确定所识别的几何形状是否具有基本均匀的颜色; 并且当确定具有几何形状的矢量图形表示的基本均匀的颜色时，替换所识别的形状。

公开(公告)号：US06980698B2

公开(公告)日：2005-12-27

申请号：US10200238

申请日：2002-07-22

申请人： Reiner Eschbach ,  Zhigang Fan

发明人： Reiner Eschbach ,  Zhigang Fan

IPC分类号： G06K9/64 ,  G06F17/30

CPC分类号： G06K9/6202 ,  Y10S707/99931

摘要： An image finder method and apparatus are provided for identifying a source image data file in a database based upon a printed image actually generated from a source image data file in the database. Input image data that represent a printed input image are received from a scanner. Source image data are received from the database that is defined by a plurality of different source image data files stored on a CD-ROM or other storage medium. Correlation operations are carried out to identify any source image data files that are highly correlated with the input image data. The results of the correlation operations are used to identify the source image data file from which the input printed image was actually generated or, if this is not possible, to identify more than one source image data file that could be the source image data file from which the printed input image was actually generated. Both the input image data and source image data are severely subsampled to obtain no more than about 1000 (and most preferably no more than 200) data values from each set of data for use in the correlation operation to provide for extremely fast processing without loss of accuracy.

摘要翻译： 提供了一种图像取景器方法和装置，用于基于从数据库中的源图像数据文件实际生成的打印图像来识别数据库中的源图像数据文件。 从扫描仪接收输入表示打印输入图像的图像数据。 从数据库接收源图像数据，其由存储在CD-ROM或其他存储介质上的多个不同的源图像数据文件定义。 执行相关操作以识别与输入图像数据高度相关的任何源图像数据文件。 相关操作的结果用于识别实际生成输入打印图像的源图像数据文件，或者如果不可能，则识别可以是源图像数据文件的多于一个源图像数据文件， 打印的输入图像实际上被生成。 输入图像数据和源图像数据都被严重二次采样，以从相关运算中使用的每组数据获得不超过约1000个（最优选不超过200个）的数据值，以提供非常快速的处理，而不会损失 准确性。

公开(公告)号：US20050275897A1

公开(公告)日：2005-12-15

申请号：US10866850

申请日：2004-06-14

申请人： Zhigang Fan ,  Timothy Jacobs

发明人： Zhigang Fan ,  Timothy Jacobs

IPC分类号： G06K9/20 ,  G06K9/34 ,  G06K9/38 ,  H04N1/40 ,  H04N1/48

CPC分类号： G06K9/38 ,  G06K9/00456 ,  G06K2209/01 ,  H04N1/40062

摘要： The present invention is a method for image segmentation to produce a mixed raster content (MRC) image with constant foreground layers. The invention extracts uniform text and other uniform color objects that carry detail information. The method includes four primary steps. First, the objects are extracted from the image. Next, the objects are tested for color consistency and other features to decide if they should be chosen for coding to the MRC foreground layers. The objects that are chosen are then clustered in color space. The image is finally segmented such that each foreground layer codes the objects from the same color cluster.

摘要翻译： 本发明是一种用于图像分割以产生具有恒定前景层的混合光栅内容（MRC）图像的方法。 本发明提供了携带细节信息的统一文本和其他统一的彩色对象。 该方法包括四个主要步骤。 首先，从图像中提取对象。 接下来，测试对象的颜色一致性和其他特征，以决定是否应该选择它们来编码到MRC前景层。 然后将所选择的对象聚类在颜色空间中。 图像最终被分割，使得每个前景层对来自相同颜色集群的对象进行编码。

公开(公告)号：US06954541B2

公开(公告)日：2005-10-11

申请号：US10158027

申请日：2002-05-29

申请人： Zhigang Fan ,  Hui Cheng ,  Robert J. Rolleston

发明人： Zhigang Fan ,  Hui Cheng ,  Robert J. Rolleston

IPC分类号： G06T1/00 ,  G11B20/00 ,  H04N1/32 ,  G06K9/00

CPC分类号： G06T1/0071 ,  G06T2201/0051 ,  G06T2201/0061 ,  G11B20/00086 ,  H04N1/00005 ,  H04N1/00037 ,  H04N1/32144 ,  H04N1/32213 ,  H04N1/32251 ,  H04N1/32267 ,  H04N1/32288 ,  H04N1/32299 ,  H04N1/32304 ,  H04N1/32309 ,  H04N2201/3242 ,  H04N2201/328

摘要： A method of editing a digital image having associated embedded data, such as printing hints, includes embedding a first watermark in the original image before the image is edited. The first watermarking scheme associates first watermark information with each pixel and is used to detect which pixels have been edited. A second watermark may be embedded in the original image according to a second watermarking scheme which associates second watermark information with non-overlapping groups of pixels in the original image. The second watermark information may be used to synchronize the first watermark information and to detect editing information which does not change pixel values. After editing, only those edited portions of the image need have their embedded data reapplied.

摘要翻译： 编辑具有相关联的嵌入数据（诸如打印提示）的数字图像的方法包括在图像编辑之前在原始图像中嵌入第一水印。 第一水印方案将第一水印信息与每个像素相关联，并用于检测哪些像素已被编辑。 第二水印可以根据将第二水印信息与原始图像中的非重叠像素组相关联的第二水印方案嵌入到原始图像中。 第二水印信息可以用于同步第一水印信息并且检测不改变像素值的编辑信息。 编辑后，只有图像的编辑部分需要重新应用其嵌入的数据。

公开(公告)号：US06947597B2

公开(公告)日：2005-09-20

申请号：US09965880

申请日：2001-09-28

申请人： Ying-wei Lin ,  Stuart A. Schweid ,  Jeng-nan Shiau ,  Raja Bala ,  Zhigang Fan

发明人： Ying-wei Lin ,  Stuart A. Schweid ,  Jeng-nan Shiau ,  Raja Bala ,  Zhigang Fan

IPC分类号： G06K9/20 ,  G06T5/00 ,  H04N1/40 ,  G06K9/62

CPC分类号： H04N1/40062 ,  G06K9/00456

摘要： A method and system for image processing, in conjunction with classification of images between natural pictures and synthetic graphics, using SGLD texture (e.g., variance, bias, skewness, and fitness), color discreteness (e.g., R_L, R_U, and R_V normalized histograms), or edge features (e.g., pixels per detected edge, horizontal edges, and vertical edges) is provided. In another embodiment, a picture/graphics classifier using combinations of SGLD texture, color discreteness, and edge features is provided. In still another embodiment, a “soft” image classifier using combinations of two (2) or more SGLD texture, color discreteness, and edge features is provided. The “soft” classifier uses image features to classify areas of an input image in picture, graphics, or fuzzy classes.

摘要翻译： 一种用于图像处理的方法和系统，结合使用SGLD纹理（例如，方差，偏差，偏度和适应度）的自然图像和合成图像之间的图像分类，颜色离散性（例如，R_L，R_U和R_V归一化直方图 ）或边缘特征（例如，每个检测到的边缘的像素，水平边缘和垂直边缘）。 在另一个实施例中，提供了使用SGLD纹理，颜色离散性和边缘特征的组合的图片/图形分类器。 在另一个实施例中，提供了使用两（2）或更多SGLD纹理，颜色离散性和边缘特征的组合的“软”图像分类器。 “软”分类器使用图像特征来对图像，图形或模糊类中的输入图像的区域进行分类。

公开(公告)号：US20050123194A1

公开(公告)日：2005-06-09

申请号：US11034131

申请日：2005-01-12

申请人： Zhigang Fan ,  Shen-ge Wang ,  Hui Cheng

发明人： Zhigang Fan ,  Shen-ge Wang ,  Hui Cheng

IPC分类号： H04N1/387 ,  G06T1/00 ,  H04N1/32 ,  H04N1/46 ,  H04N1/60 ,  G06K9/00 ,  G06K9/40 ,  G06K15/00 ,  G06T5/00 ,  H04N1/407

CPC分类号： H04N1/32309 ,  G06T1/0021 ,  G06T2201/0601 ,  H04N1/32144 ,  H04N1/32341 ,  H04N1/6033 ,  H04N2201/0081 ,  H04N2201/3242 ,  H04N2201/3271 ,  H04N2201/3283

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。

公开(公告)号：US06844941B1

公开(公告)日：2005-01-18

申请号：US09602746

申请日：2000-06-23

申请人： Gaurav Sharma ,  Zhigang Fan ,  Shen Ge Wang

发明人： Gaurav Sharma ,  Zhigang Fan ,  Shen Ge Wang

IPC分类号： H04N1/52

CPC分类号： H04N1/52

摘要： A method is provided for rendering a color image with a plurality of separations with a halftone process using a single screen for a plurality of separations. The screen is comprised of a plurality of pixel locations with associated threshold values and the image is comprised of a plurality of separation values. The method includes the steps of rendering a first one of the plurality of separations in accordance with the screen, wherein the plurality of pixel locations are turned on or off at a given pixel location based on a comparison of the image separation value at that pixel with the screen threshold value. The rendering of the next color separation is made in accordance with the rendering of the first separation and the screen, wherein for constant image separation values, pixel locations are turned on for the separation at pixel locations disposed in a highest available luminance region having a lowest available threshold value.

摘要翻译： 提供一种用于通过使用单个屏幕进行多次分离的具有半色调处理的多个分色的彩色图像的方法。 屏幕由具有相关联的阈值的多个像素位置组成，并且图像由多个分离值组成。 该方法包括以下步骤：根据屏幕呈现多个间隔中的第一个，其中基于该像素处的图像分离值与该像素处的图像分离值的比较，多个像素位置在给定像素位置被打开或关闭 屏幕阈值。 根据第一分离和屏幕的渲染，进行下一个分色的渲染，其中对于恒定图像分离值，打开像素位置，以便在布置在具有最低的最高可用亮度区域的像素位置处进行分离 可用阈值。

公开(公告)号：US06839152B2

公开(公告)日：2005-01-04

申请号：US09731131

申请日：2000-12-06

申请人： Zhigang Fan ,  Ying-Wei Lin ,  Hong Li

发明人： Zhigang Fan ,  Ying-Wei Lin ,  Hong Li

IPC分类号： G06T5/00 ,  G06T5/20 ,  H04N1/40 ,  H04N1/405 ,  G06K15/00

CPC分类号： H04N1/40075

摘要： An adaptive filtering method and apparatus for descreening a scanned halftoned image representation is disclosed. The apparatus includes an image input subsystem; a processing subsystem for processing halftoned image data provided by the image input subsystem; and software/firmware means operative on the processing subsystem for a) low-pass filtering a halftoned input pixel value provided by the image input subsystem to produce a low-pass filtered pixel value; b) notch-filtering the halftoned input pixel value to produce a notch-filtered pixel value; c) determining a local contrast value for the halftoned input pixel value; and d) producing a descreened output pixel value based on the low-pass filtered pixel value, the notch-filtered pixel value, or a combination of the low-pass filtered pixel value and the notch-filtered pixel value depending on the local contrast value.