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公开(公告)号：US5619592A
公开(公告)日：1997-04-08
申请号：US477358
申请日：1995-06-07
CPC分类号： H04N1/38 , G06K9/20 , G06K9/2054 , G06K2209/01
摘要： A method and apparatus for detection of highlighted regions of a document. A document containing highlighted regions is scanned using a gray scale scanner. Morphology and threshold reduction techniques are used to separate highlighted and non-highlighted portions of the document. Having separated the highlighted and non-highlighted portions, optical character recognition (OCR) techniques can then be used to extract text from the highlighted regions.
摘要翻译： 用于检测文档的突出显示区域的方法和装置。 使用灰度扫描仪扫描包含突出显示区域的文档。 使用形态学和阈值削减技术分离文档的突出显示部分和非突出显示部分。 在分离了突出显示和未突出显示的部分之后，可以使用光学字符识别（OCR）技术从突出显示的区域中提取文本。
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公开(公告)号：US5272764A
公开(公告)日：1993-12-21
申请号：US751263
申请日：1991-08-28
CPC分类号： H04N1/38 , G06K9/20 , G06K9/2054 , G06K2209/01
摘要： A method and apparatus for detection of highlighted regions of a document. A document containing highlighted regions is scanned using a gray scale scanner. Morphology and threshold reduction techniques are used to separate highlighted and non-highlighted portions of the document. Having separated the highlighted and non-highlighted portions, optical character recognition (OCR) techniques can then be used to extract text from the highlighted regions.
摘要翻译： 用于检测文档的突出显示区域的方法和装置。 使用灰度扫描仪扫描包含突出显示区域的文档。 使用形态学和阈值削减技术分离文档的突出显示部分和非突出显示部分。 在分离了突出显示和未突出显示的部分之后，可以使用光学字符识别（OCR）技术从突出显示的区域提取文本。
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公开(公告)号：US5048109A
公开(公告)日：1991-09-10
申请号：US447985
申请日：1989-12-08
CPC分类号： H04N1/38 , G06K9/20 , G06K9/2054 , G06K2209/01
摘要： A method and apparatus for detection of highlighted regions of a document. A document containing highlighted regions is scanned using a gray scale scanner. Morphology and threshold reduction techniques are used to separate highlighted and non-highlighted portions of the docment. Having separated the highlighted and non-highlighted portions, optical character recognition (OCR) techniques can then be used to extract text from the highlighted regions.
摘要翻译： 用于检测文档的突出显示区域的方法和装置。 使用灰度扫描仪扫描包含突出显示区域的文档。 形态和阈值削减技术用于分隔文档的突出显示部分和非突出显示部分。 在分离了突出显示和未突出显示的部分之后，可以使用光学字符识别（OCR）技术从突出显示的区域中提取文本。
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4.发明授权Hardcopy lossless data storage and communications for electronic document processing systems 失效用于电子文档处理系统的硬拷贝无损数据存储和通信
公开(公告)号：US5486686A
公开(公告)日：1996-01-23
申请号：US887563
申请日：1992-05-18
申请人： Frank Zdybel, Jr. , Henry W. Sang, Jr. , Jan O. Pedersen , Z. E. Smith, III , D. A. Henderson, Jr. , David L. Hecht , Dan S. Bloomberg
发明人： Frank Zdybel, Jr. , Henry W. Sang, Jr. , Jan O. Pedersen , Z. E. Smith, III , D. A. Henderson, Jr. , David L. Hecht , Dan S. Bloomberg
CPC分类号： H04N1/32133 , G06F17/30011 , G06Q10/10 , H04N2201/3204 , H04N2201/3205 , H04N2201/3214 , H04N2201/3226 , H04N2201/3232 , H04N2201/3233 , H04N2201/3242 , H04N2201/3269 , H04N2201/3271
摘要： Machine readable electronic domain definitions of part or all of the electronic domain descriptions of hardcopy documents and/or of part or all of the transforms that are performed to produce and reproduce such hardcopies documents are encoded in codes that are printed on such documents, thereby permitting the electronic domain descriptions of such documents and/or such transforms to be recovered more robustly and reliably when the information carried by such documents is transformed from the hardcopy domain to the electronic domain.
摘要翻译： 用于制作和复制这些复印件的硬拷贝文件和/或部分或全部变换的部分或全部电子域描述的机读电子域定义以打印在这些文件上的代码进行编码，从而允许 当这些文件所携带的信息从硬拷贝域转变为电子域时，对这些文档和/或这种转换的电子域描述被更加鲁棒和可靠地恢复。
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5.发明授权Method and apparatus for image hand markup detection using morphological techniques 失效使用形态学技术的图像手标检测方法和装置
公开(公告)号：US5201011A
公开(公告)日：1993-04-06
申请号：US794275
申请日：1991-11-19
申请人： Dan S. Bloomberg , Lakshmi Dasari
发明人： Dan S. Bloomberg , Lakshmi Dasari
CPC分类号： G06K9/2063 , G06T7/004 , G06K2209/01
摘要： An image markup detection device and method identifies and extracts markup lines and regions marked automatically or interactively by a user with an ordinary pen or pencil. Only morphological image processing operations on a scanned source image are used, resulting in the extrapolation of markup lines and marked region. The markup lines are either extracted from the image, or the background information of the image (e.g., text) is removed, leaving only the markup lines. The marked region can then be printed, transferred or otherwise processed.
摘要翻译： 图像标记检测装置和方法用普通的笔或铅笔来标识和提取由用户自动或交互地标记的标记线和区域。 仅使用扫描的源图像上的形态图像处理操作，导致标记线和标记区域的外推。 从图像中提取标记线，或者去除图像的背景信息（例如文本），仅留下标记线。 然后可以打印，转移或以其他方式处理标记区域。
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公开(公告)号：US5276742A
公开(公告)日：1994-01-04
申请号：US794551
申请日：1991-11-19
申请人： Lakshmi Dasari , Dan S. Bloomberg
发明人： Lakshmi Dasari , Dan S. Bloomberg
CPC分类号： G06K9/3208 , G06K2209/01
摘要： A method of apparatus for automatic page orientation of a scanned image which compares the number of character ascending pixels to the number of character descending pixels in the image to determine if the image is properly aligned or is 90.degree. or 180.degree. out of orientation. The method and apparatus includes morphologically processing the bitmap of the scanned image using structuring elements for isolating the character ascenders and descenders. When page orientation is improper, the bitmap image of the scanned image is rotated to correct the misalignment.
摘要翻译： 一种用于扫描图像的自动页面取向的装置的方法，其将角色上升像素的数量与图像中的字符下降像素的数量进行比较，以确定图像是否正确对齐，或者是取向为90度或180度。 所述方法和装置包括使用用于隔离角色上升器和下降器的构造元件形态地处理扫描图像的位图。 当页面方向不正确时，旋转扫描图像的位图图像以更正错位。
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7.发明授权公开(公告)号：US06594393B1
公开(公告)日：2003-07-15
申请号：US09569531
申请日：2000-05-12
IPC分类号： G06K968
CPC分类号： G06K9/6297 , Y10S707/99936
摘要： In a text recognition system, the computational efficiency of a text line image decoding operation is improved by utilizing the characteristic of a graph known as the cut set. The branches of the data structure that represents the image are initially labeled with estimated scores. When estimated scores are used, the decoding operation must perform iteratively on a text line before producing the best path through the data structure. After each iteration, nodes in the best path are re-scored with actual scores. The decoding operation incorporates an operating mode called skip mode. When the number of consecutive image positions for which the change value of cumulative path scores between current and prior iterations is substantially constant and exceeds a threshold, this signals the presence of a cut set, and the score change value is added to a previously computed path score until a re-scored node is encountered, thereby eliminating the expensive computation of new cumulative path scores at those image positions.
摘要翻译： 在文本识别系统中，通过利用称为切割集的图形的特征来提高文本行图像解码操作的计算效率。 表示图像的数据结构的分支最初用估计分数标记。 当使用估计分数时，在通过数据结构生成最佳路径之前，解码操作必须在文本行上迭代执行。 每次迭代后，最佳路径中的节点用实际分数重新计分。 解码操作包括称为跳过模式的操作模式。 当当前迭代和以前迭代之间的累积路径得分的变化值基本上恒定并超过阈值的连续图像位置的数量时，这表示切割集合的存在，并将得分改变值添加到先前计算的路径 得分，直到遇到重新计分的节点，从而消除了在这些图像位置处的新累积路径分数的昂贵计算。
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公开(公告)号：US5570435A
公开(公告)日：1996-10-29
申请号：US365251
申请日：1994-12-28
CPC分类号： G06K9/00456 , G06K9/6835
摘要： A method and apparatus for differentiating and extracting handwritten annotations and machine printed text in an image. The method provides for the use of morphological operations, preferably at reduced scale, to eliminate for example, the handwritten annotations from an image. A separation mask is produced that, for example, converts all the image pixels corresponding to machine printed text, and none of the image pixels corresponding to handwritten or handprinted annotations. The separation mask is used in conjunction with the original image to produce separate handwritten annotations and machine printed text images. The invention also provides a method and apparatus for identifying the location of specialized type styles such as bold and italic is disclosed. The method erodes a binary image utilizing structuring elements which provide a relatively large number of hits in regions containing the specialized type styles. The destination image resulting from the erosion is coalesced so as to form masks which may be used to extract portions of the original image containing the specialized type styles.
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9.发明授权Methods and apparatus for automatic modification of semantically significant portions of a document without document image decoding 失效用于自动修改文档的语义重要部分而不进行文档图像解码的方法和装置
公开(公告)号：US5384863A
公开(公告)日：1995-01-24
申请号：US795174
申请日：1991-11-19
申请人： Daniel P. Huttenlocher , Ronald M. Kaplan , M. Margaret Withgott , Todd A. Cass , Per-Kristian Halvorsen , Dan S. Bloomberg , Ramana B. Rao
发明人： Daniel P. Huttenlocher , Ronald M. Kaplan , M. Margaret Withgott , Todd A. Cass , Per-Kristian Halvorsen , Dan S. Bloomberg , Ramana B. Rao
CPC分类号： G06K9/2054 , G06K2209/01
摘要： Methods and apparatus of processing an undecoded document image in a digital computer to modify the document image so as to emphasize semantically significant portions without first converting the document image to character codes. The document image is segmented into image units, and morphological image characteristics of the image units are evaluated to identify significant image units for emphasis. In one embodiment, the significant image units are emphasized by modifying at least one shape characteristic of the significant image units using at least one uniform morphological bitmap operation applied to the entire image unit bitmaps corresponding to the significant image units.
摘要翻译： 在数字计算机中处理未解码的文档图像以修改文档图像以便在不首先将文档图像转换为字符代码的情况下强调语义上有意义的部分的方法和装置。 将文档图像分割为图像单元，并且评估图像单元的形态图像特征以识别用于强调的重要图像单元。 在一个实施例中，通过使用应用于对应于有效图像单元的整个图像单元位图的至少一个均匀形态位图操作来修改显着图像单元的至少一个形状特征来强调有意图像单元。
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公开(公告)号：US5157726A
公开(公告)日：1992-10-20
申请号：US810644
申请日：1991-12-19
申请人： Ralph C. Merkle , Dan S. Bloomberg , John S. Brown
发明人： Ralph C. Merkle , Dan S. Bloomberg , John S. Brown
CPC分类号： G07F7/08 , G03G15/221 , G07D7/12 , G07D7/20 , H04L9/3247
摘要： A system for authenticating a hard copy of an original document. The system employs a special copying machine at the sender's end together with a special ID card (smart card) or other user identification for activating the special machine, and a special copying machine at the receiving end. At the sender's station, the original document and ID card are inserted into the machine. The latter digitizes the document text, to produce a digital signature which incorporates unique information from the sender's ID card. This machine then produces a hard copy of the document to which is added the digital signature. The sender retains the original, but forwards the copy to the recipient or receiver. The receiver then inserts the received copy into the machine at his location, which digitizes and processes the document text and signature and indicates whether the digital signature is valid. Preferably a dual key authentication system is used, with the digital signature incorporating the sender's secret signing key, and the receiver using the related public key in the validation process.
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