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11. 发明授权

US09031898B2 Presentation of search results based on document structure 有权
标题翻译：基于文档结构显示搜索结果
公开(公告)号：US09031898B2
公开(公告)日：2015-05-12
申请号：US10949708
申请日：2004-09-27
申请人： Amitabh K. Singhal , Viresh Ratnakar , Maxim Lifantsev , Joseph Kieran O'Sullivan
发明人： Amitabh K. Singhal , Viresh Ratnakar , Maxim Lifantsev , Joseph Kieran O'Sullivan
IPC分类号： G06F17/30 , G06F17/21 , G06F17/22
CPC分类号： G06F17/3061 , G06F17/211 , G06F17/2247 , G06F17/30864 , G06F17/30908
摘要： A system identifies a document relating to a search term, where the document includes a set of structural elements. The system determines a distribution of occurrences of the search term in the document, identifies one of the structural elements based on the distribution of occurrences of the search term in the document, and presents information associated with the identified structural element.
摘要翻译：系统识别与搜索项相关的文档，其中文档包括一组结构元素。系统确定文档中搜索项的出现分布，基于文档中搜索项的出现分布来识别结构元素之一，并呈现与所识别的结构元素相关联的信息。

12. 发明授权

US06278432B1 Image delivery and display system 失效
标题翻译：图像传送和显示系统
公开(公告)号：US06278432B1
公开(公告)日：2001-08-21
申请号：US09096719
申请日：1998-06-11
申请人： Viresh Ratnakar
发明人： Viresh Ratnakar
IPC分类号： G09G500
CPC分类号： G06T11/00 , H04L67/18 , H04L67/38 , H04L69/04
摘要： An image delivery and display system embodying a technique for displaying on a client computer of a client-server network a portion of an image stored on the server. Upon receiving a request from the client computer specifying particular x, y coordinates, the server decompresses the image to extract the area of interest, partitions the image area into tiles and extracts the tile containing the x, y coordinates and a certain number of surrounding tiles, recompresses those tiles and transmits those tiles to the client computer. The tile containing the x, y coordinates is extracted, recompressed and transmitted first followed by the surrounding tiles in spiral order. The client computer then decompresses and displays the tiles in that same order.
摘要翻译：一种体现用于在客户端计算机上显示服务器上存储的图像的一部分的技术的图像传送和显示系统。在从客户端计算机接收到指定特定x，y坐标的请求时，服务器解压缩图像以提取感兴趣的区域，将图像区域分割成瓦片并提取包含x，y坐标和一定数量的周围瓦片的瓦片，重新压缩这些瓦片并将这些瓦片传输到客户端计算机。包含x，y坐标的瓦片首先被提取，重新压缩并发送，然后按照螺旋顺序传送周围的瓦片。然后客户端计算机以相同的顺序解压缩并显示瓦片。

13. 发明授权

US06928186B2 Semantic downscaling and cropping (SEDOC) of digital images 失效
标题翻译：数字图像的语义缩小和裁剪（SEDOC）
公开(公告)号：US06928186B2
公开(公告)日：2005-08-09
申请号：US10177010
申请日：2002-06-21
申请人： Viresh Ratnakar
发明人： Viresh Ratnakar
IPC分类号： G06T5/00 , G06T9/00 , G06K9/36
CPC分类号： G06T9/007 , G06T3/40 , G06T7/194 , G06T2207/20132
摘要： A compressed-domain-based algorithm reduces a source image to a given target size using a combination of downscaling, cropping, and region-of-interest identification. The source image is partitioned into a plurality of macroblocks, each macroblock containing a plurality of chrominance and luminance blocks, each chrominance block and each luminance block containing a DC coefficient and AC coefficients. To each macroblock, a first rule is applied based on values of the DC coefficient of the chrominance blocks in that macroblock to identify a particular type of texture in the image. Also to each macroblock, a second rule is applied based on select values of the AC coefficient of luminance blocks in that macroblock to identify edges in the image. The macroblocks within the image are then searched to find an area containing an area of interest based on the results of applying the first and second rules.
摘要翻译：基于压缩域的算法使用缩减，裁剪和感兴趣区域标识的组合将源图像减少到给定的目标大小。源图像被分割成多个宏块，每个宏块包含多个色度和亮度块，每个色度块和每个亮度块包含DC系数和AC系数。对于每个宏块，基于该宏块中的色度块的DC系数的值来应用第一规则，以识别图像中的特定类型的纹理。还针对每个宏块，基于该宏块中的亮度块的AC系数的选择值来应用第二规则以识别图像中的边缘。然后根据应用第一和第二规则的结果，搜索图像内的宏块以找到包含感兴趣区域的区域。

14. 发明授权

US5724453A Image compression system and method having optimized quantization tables 失效
标题翻译：具有优化量化表的图像压缩系统和方法
公开(公告)号：US5724453A
公开(公告)日：1998-03-03
申请号：US500000
申请日：1995-07-10
申请人： Viresh Ratnakar , Miron Livny
发明人： Viresh Ratnakar , Miron Livny
IPC分类号： G06T9/00 , H04N7/26 , H04N7/30 , G06K9/36 , G06K9/38 , G06K9/46
CPC分类号： H04N19/126 , H04N19/147 , H04N19/60 , H04N19/124
摘要： A digital image compression preprocessor for use in a discrete cosine transform-based digital image compression device is provided. The preprocessor includes a gathering mechanism for determining discrete cosine transform statistics from input digital image data. A computing mechanism is operatively coupled to the gathering mechanism to calculate a image distortion array and a rate of image compression array based upon the discrete cosine transform statistics for each possible quantization value. A dynamic programming mechanism is operatively coupled to the computing mechanism to optimize the rate of image compression array against the image distortion array such that a rate-distortion-optimal quantization table is derived. In addition, a discrete cosine transform-based digital image compression device and a discrete cosine transform-based digital image compression and decompression system are provided. Also, a method for generating a rate-distortion-optimal quantization table, using discrete cosine transform-based digital image compression, and operating a discrete cosine transform-based digital image compression and decompression system are provided.
摘要翻译：提供了一种用于基于离散余弦变换的数字图像压缩装置的数字图像压缩预处理器。预处理器包括用于从输入数字图像数据确定离散余弦变换统计的收集机构。计算机构可操作地耦合到收集机构，以基于每个可能的量化值的离散余弦变换统计来计算图像失真阵列和图像压缩阵列的速率。动态编程机制可操作地耦合到计算机构，以优化针对图像失真阵列的图像压缩阵列的速率，从而导出速率失真最优量化表。另外，提供了基于离散余弦变换的数字图像压缩装置和基于离散余弦变换的数字图像压缩和解压缩系统。此外，提供了一种使用基于离散余弦变换的数字图像压缩来生成速率失真最优量化表，并且操作基于离散余弦变换的数字图像压缩和解压缩系统的方法。

15. 发明授权

US08482581B2 Selective display of OCR'ed text and corresponding images from publications on a client device 有权
标题翻译：从客户端设备上的出版物中选择性地显示OCR的文本和相应的图像
公开(公告)号：US08482581B2
公开(公告)日：2013-07-09
申请号：US13615024
申请日：2012-09-13
申请人： Viresh Ratnakar , Frances Haugen , Ashok Popat
发明人： Viresh Ratnakar , Frances Haugen , Ashok Popat
IPC分类号： G09G5/14 , G06T11/00 , G06T11/60 , G06T11/20
CPC分类号： G09G5/14 , G06K9/033 , G06K2209/01 , G06T11/00 , G06T11/206 , G06T11/60
摘要： Text is extracted from a source image of a publication using an Optical Character Recognition (OCR) process. A document is generated containing text segments of the extracted text. The document includes a control module that responds to user interactions with the displayed document. Responsive to a user selection of a displayed text segment, a corresponding image segment from the source image containing the text is retrieved and rendered in place of the selected text segment. The user can select again to toggle the display back to the text segment. Each text segment can be tagged with a garbage score indicating its quality. If the garbage score of a text segment exceeds a threshold value, the corresponding image segment can be automatically displayed instead.
摘要翻译：使用光学字符识别（OCR）过程从出版物的源图像中提取文本。生成包含提取文本的文本段的文档。该文档包括一个响应用户与显示的文档交互的控制模块。响应于用户对所显示的文本段的选择，从包含文本的源图像的对应的图像段被检索和呈现以代替所选择的文本段。用户可以再次选择将显示切换回文本段。每个文本段都可以用指示其质量的垃圾分类标记。如果文本段的垃圾分数超过阈值，则可以自动显示相应的图像段。

16. 发明授权

US08373724B2 Selective display of OCR'ed text and corresponding images from publications on a client device 有权
公开(公告)号：US08373724B2
公开(公告)日：2013-02-12
申请号：US12366547
申请日：2009-02-05
申请人： Viresh Ratnakar , Frances Haugen , Ashok Popat
发明人： Viresh Ratnakar , Frances Haugen , Ashok Popat
IPC分类号： G09G5/14
CPC分类号： G09G5/14 , G06K9/033 , G06K2209/01 , G06T11/00 , G06T11/206 , G06T11/60
摘要： Text is extracted from a source image of a publication using an Optical Character Recognition (OCR) process. A document is generated containing text segments of the extracted text. The document includes a control module that responds to user interactions with the displayed document. Responsive to a user selection of a displayed text segment, a corresponding image segment from the source image containing the text is retrieved and rendered in place of the selected text segment. The user can select again to toggle the display back to the text segment. Each text segment can be tagged with a garbage score indicating its quality. If the garbage score of a text segment exceeds a threshold value, the corresponding image segment can be automatically displayed instead.

17. 发明申请

US20100188419A1 SELECTIVE DISPLAY OF OCR'ED TEXT AND CORRESPONDING IMAGES FROM PUBLICATIONS ON A CLIENT DEVICE 有权
标题翻译：在客户端设备上从出版物中选择性地显示OCR'ED文本和对应的图像
公开(公告)号：US20100188419A1
公开(公告)日：2010-07-29
申请号：US12366547
申请日：2009-02-05
申请人： Viresh Ratnakar , Frances Haugen , Ashok Popat
发明人： Viresh Ratnakar , Frances Haugen , Ashok Popat
IPC分类号： G09G5/00 , G06K9/62
CPC分类号： G09G5/14 , G06K9/033 , G06K2209/01 , G06T11/00 , G06T11/206 , G06T11/60
摘要： Text is extracted from a source image of a publication using an Optical Character Recognition (OCR) process. A document is generated containing text segments of the extracted text. The document includes a control module that responds to user interactions with the displayed document. Responsive to a user selection of a displayed text segment, a corresponding image segment from the source image containing the text is retrieved and rendered in place of the selected text segment. The user can select again to toggle the display back to the text segment. Each text segment can be tagged with a garbage score indicating its quality. If the garbage score of a text segment exceeds a threshold value, the corresponding image segment can be automatically displayed instead.
摘要翻译：使用光学字符识别（OCR）过程从出版物的源图像中提取文本。生成包含提取文本的文本段的文档。该文档包括一个响应用户与显示的文档交互的控制模块。响应于用户对所显示的文本段的选择，从包含文本的源图像的对应的图像段被检索和呈现以代替所选择的文本段。用户可以再次选择将显示切换回文本段。每个文本段都可以用指示其质量的垃圾分类标记。如果文本段的垃圾分数超过阈值，则可以自动显示相应的图像段。

18. 发明授权

US06574372B2 Wavelet transform coding technique 有权
公开(公告)号：US06574372B2
公开(公告)日：2003-06-03
申请号：US09887917
申请日：2001-06-22
申请人： Viresh Ratnakar
发明人： Viresh Ratnakar
IPC分类号： G06K936
CPC分类号： G06T9/007
摘要： A wavelet transform coding technique is provided, which may be part of TROBIC or may be used independently in a wide variety of compression applications. The wavelet coding technique is carried out by a simple block codec with wavelets (SBCW) that uses wavelet filters to transform 32×2 image blocks into subband coefficients organized in a tree structure. These coefficients are then encoded using a novel entropy coding technique with precise rate control. The Two Row Buffer Image Compression (TROBIC) technique operates on 32×2 blocks of pixels and uses a block-based coding scheme to provide alternative coding modes for image blocks containing different types of image data. The TROBIC algorithm automatically evaluates the image presented to determine regions containing text, graphics, synthetic images and natural images along with determining the most effective combination of global-index coding, local-index coding, lossless coding and wavelet coding to use to guarantee the desired compression ratio and high quality.

19. 发明申请

US20150199314A1 Editing Application For Synthesized eBooks 审中-公开
标题翻译：编辑合成电子书的应用程序
公开(公告)号：US20150199314A1
公开(公告)日：2015-07-16
申请号：US12912444
申请日：2010-10-26
申请人： Viresh Ratnakar
发明人： Viresh Ratnakar
IPC分类号： G06F17/24 , H04L29/08 , G06F17/22 , G06F3/048
CPC分类号： G06F17/24 , G06F17/2247
摘要： A software application to assist human operators to efficiently correct errors in electronic books (eBooks) is described. The application presents the operator with a graphical user interface (GUI) including a page image of a source document (e.g., a printed publication) alongside a rendition of structured content extracted from the page image. The operator can make a structural change as well as a low-level text change in the rendition by issuing an editing command through the GUI. The editing command is sent to a server hosting an intermediate document for the source document and the page image. The server modifies the intermediate document by applying the editing command, and transmits to the application an updated rendition generated based on the modified intermediate document. The application displays the updated rendition to reflect the change made in response to the editing command.
摘要翻译：描述了一种帮助人类操作员有效地纠正电子书（电子书）错误的软件应用程序。应用程序向操作者呈现包括源文档（例如，打印出版物）的页面图像以及从页面图像提取的结构化内容的再现的图形用户界面（GUI）。通过GUI发出编辑命令，操作员可以进行结构改变以及重现的低级文本更改。编辑命令被发送到托管源文档和页面图像的中间文档的服务器。服务器通过应用编辑命令修改中间文档，并向应用程序发送基于修改的中间文档生成的更新的再现。应用程序显示更新的演绎，以反映响应编辑命令所做的更改。

20. 发明申请

US20130002710A1 Selective Display of OCR'ed Text and Corresponding Images from Publications on a Client Device 有权
标题翻译： OCR文本的选择性显示和客户端设备上出版物的相应图像
公开(公告)号：US20130002710A1
公开(公告)日：2013-01-03
申请号：US13615024
申请日：2012-09-13
申请人： Viresh Ratnakar , Frances Haugen , Ashok Popat
发明人： Viresh Ratnakar , Frances Haugen , Ashok Popat
IPC分类号： G09G5/00
CPC分类号： G09G5/14 , G06K9/033 , G06K2209/01 , G06T11/00 , G06T11/206 , G06T11/60
摘要： Text is extracted from a source image of a publication using an Optical Character Recognition (OCR) process. A document is generated containing text segments of the extracted text. The document includes a control module that responds to user interactions with the displayed document. Responsive to a user selection of a displayed text segment, a corresponding image segment from the source image containing the text is retrieved and rendered in place of the selected text segment. The user can select again to toggle the display back to the text segment. Each text segment can be tagged with a garbage score indicating its quality. If the garbage score of a text segment exceeds a threshold value, the corresponding image segment can be automatically displayed instead.
摘要翻译：使用光学字符识别（OCR）过程从出版物的源图像中提取文本。生成包含提取文本的文本段的文档。该文档包括一个响应用户与显示的文档交互的控制模块。响应于用户对所显示的文本段的选择，从包含文本的源图像的对应的图像段被检索和呈现以代替所选择的文本段。用户可以再次选择将显示切换回文本段。每个文本段都可以用指示其质量的垃圾分类标记。如果文本段的垃圾分数超过阈值，则可以自动显示相应的图像段。

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