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公开(公告)号：DE69825388D1
公开(公告)日：2004-09-09
申请号：DE69825388
申请日：1998-10-16
Applicant: XEROX CORP
Inventor： FLEET DAVID J , HEEGER DAVID J , CASS TODD A , HECHT DAVID L
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公开(公告)号：DE69718959D1
公开(公告)日：2003-03-20
申请号：DE69718959
申请日：1997-05-01
Applicant: XEROX CORP
Inventor： CASS TODD A
Abstract: A processor is provided (410-430) with first and second document images. The first image represents an instance of a reference document to which instance a mark has been added. The second image is selected from among a collection of document images and represents the reference document without the mark. The processor automatically extracts (450) from the first document image a set of pixels representing the mark. This is done by performing a reference-based mark extraction technique in which the second document image serves as a reference image and in which substantially the entirety of the first document image is compared with substantially the entirety of the second document image. Also, the processor is provided (440) with information about a set of active elements of the reference document. The reference document has at least one such active element and each active element is associated with at least one action. The processor interprets (460) the extracted set of pixels representing the mark by determining whether the mark indicates any of the active elements of the reference document. If the mark indicates an active element, the processor facilitates (470) the action with which the indicated active element is associated.
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23.发明专利
公开(公告)号：AU4695900A
公开(公告)日：2000-11-17
申请号：AU4695900
申请日：2000-05-04
Applicant: XEROX CORP
Inventor： ADAR EYTAN , BREUEL THOMAS M , CASS TODD A , PITKOW JAMES E , SCHUETZE HINRICH
IPC: G06F17/30
Abstract: A search and recommendation system employs the preferences and profiles of individual users and groups within a community of users, as well as information derived from categorically organized content pointers, to augment Internet searches, re-rank search results, and provide recommendations for objects based on an initial subject-matter query. The search and recommendation system operates in the context of a content pointer manager, which stores individual users' content pointers (some of which may be published or shared for group use) on a centralized content pointer database connected to the Internet. The shared content pointer manager is implemented as a distributed program, portions of which operate on users' terminals and other portions of which operate on the centralized content pointer database. A user's content pointers are organized in accordance with a local topical categorical hierarchy. The hierarchical organization is used to define a relevance context within which returned objects are evaluated and ordered.
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公开(公告)号：DE69229468D1
公开(公告)日：1999-07-29
申请号：DE69229468
申请日：1992-11-16
Applicant: XEROX CORP
Inventor： CASS TODD A , HUTTENLOCHER DANIEL P , HALVORSEN PER-KRISTIAN , WITHGOTT M MARGARET , KAPLAN RONALD M , RAO RAMANA B
Abstract: A method and apparatus for determining word frequency from a document without first converting the document to character codes. The method includes morphological image processing to determine word unit characteristics for placement into equivalence classes utilizing non-content based information. Word shape representations are preferably determined and compared to define equivalent word units.
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公开(公告)号：CA2077274C
公开(公告)日：1997-07-15
申请号：CA2077274
申请日：1992-09-01
Applicant: XEROX CORP
Inventor： WITHGOTT M MARGARET , BAGLEY STEVEN C , BLOOMBERG DAN S , HALVORSEN PER-KRISTIAN , HUTTENLOCHER DANIEL P , CASS TODD A , KAPLAN RONALD M , RAO RAMANA B
Abstract: A method and apparatus for excerpting and summarizing an undecoded document image, without first converting the document image to optical character codes such as ASCII text, identifies significant words, phrases and graphics in the document image using automatic or interactive morphological image recognition techniques, document summaries or indices are produced based on the identified significant portions of the document image. The disclosed method is particularly adept for improvement of reading machines for the blind.
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Patent Agency Ranking
公开(公告)号：CA2077565A1
公开(公告)日：1993-05-20
申请号：CA2077565
申请日：1992-09-04
Applicant: XEROX CORP
Inventor： HUTTENLOCHER DANIEL P , KAPLAN RONALD M , WITHGOTT M MARGARET , CASS TODD A , HALVORSEN PER-KRISTIAN , BLOOMBERG DAN S , RAO RAMANA B
Abstract: 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.
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公开(公告)号：CA2077274A1
公开(公告)日：1993-05-20
申请号：CA2077274
申请日：1992-09-01
Applicant: XEROX CORP
Inventor： WITHGOTT M MARGARET , BAGLEY STEVEN C , BLOOMBERG DAN S , HALVORSEN PER-KRISTIAN , HUTTENLOCHER DANIEL P , CASS TODD A , KAPLAN RONALD M , RAO RAMANA R
Abstract: A method and apparatus for excerpting and summarizing an undecoded document image, without first converting the document image to optical character codes such as ASCII text, identifies significant words, phrases and graphics in the document image using automatic or interactive morphological image recognition techniques, document summaries or indices are produced based on the identified significant portions of the document image. The disclosed method is particularly adept for improvement of reading machines for the blind.
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公开(公告)号：DE69515371T2
公开(公告)日：2000-07-27
申请号：DE69515371
申请日：1995-06-02
Applicant: XEROX CORP
Inventor： POON ALEX D , CASS TODD A , WEBER KARON ANNE
Abstract: A method and system are disclosed for searching and matching gesture-based data such as handwriting without performing a recognition process on the handwritten gesture data to convert it to a standard computer-coded form. Target data (16) collected as sample data points (20,22) of spatial coordinates over time are concatenated into a single target gesture sequence of sample data points. The sample data points comprising the gesture-based data structure to be searched (the corpus) are grouped into corpus gesture sequences for matching against the target gesture sequence. Matching may be done by any suitable method, and a novel signal comparison technique based on dynamic time warping concepts is illustrated. The result of the matching is a list of the locations of the matching corpus gesture sequences in the corpus, which in turn may be used for further processing, such as the display of an image of the matching corpus gestures for a system user. The ability to determine the existence and location of a gesture in the corpus that matches a target gesture (10) is the basis for performing a variety of additional functions, such as a "find and replace" function and the ability to use gestures as keywords to index a gesture-based data structure without performing recognition on either the keyword gestures or the gesture-based data structure. The technique is suitable for inclusion in any system that accepts gesture-based data, such as a personal digital assistant (PDA) or other pen-based computing device.
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公开(公告)号：DE69515371D1
公开(公告)日：2000-04-13
申请号：DE69515371
申请日：1995-06-02
Applicant: XEROX CORP
Inventor： POON ALEX D , CASS TODD A , WEBER KARON ANNE
Abstract: A method and system are disclosed for searching and matching gesture-based data such as handwriting without performing a recognition process on the handwritten gesture data to convert it to a standard computer-coded form. Target data (16) collected as sample data points (20,22) of spatial coordinates over time are concatenated into a single target gesture sequence of sample data points. The sample data points comprising the gesture-based data structure to be searched (the corpus) are grouped into corpus gesture sequences for matching against the target gesture sequence. Matching may be done by any suitable method, and a novel signal comparison technique based on dynamic time warping concepts is illustrated. The result of the matching is a list of the locations of the matching corpus gesture sequences in the corpus, which in turn may be used for further processing, such as the display of an image of the matching corpus gestures for a system user. The ability to determine the existence and location of a gesture in the corpus that matches a target gesture (10) is the basis for performing a variety of additional functions, such as a "find and replace" function and the ability to use gestures as keywords to index a gesture-based data structure without performing recognition on either the keyword gestures or the gesture-based data structure. The technique is suitable for inclusion in any system that accepts gesture-based data, such as a personal digital assistant (PDA) or other pen-based computing device.
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公开(公告)号：DE69229537T2
公开(公告)日：1999-11-25
申请号：DE69229537
申请日：1992-11-16
Applicant: XEROX CORP
Inventor： WITHGOTT MARGARET M , HUTTENLOCHER DANIEL P , BAGLEY STEVEN C , HALVORSEN PER KRISTIAN , BLOOMBERG DAN S , KAPLAN RONALD M , CASS TODD A , RAO RAMANA R
Abstract: A method and apparatus for excerpting and summarizing an undecoded document image, without first converting the document image to optical character codes such as ASCII text, identifies significant words, phrases and graphics in the document image using automatic or interactive morphological image recognition techniques, document summaries or indices are produced based on the identified significant portions of the document image. The disclosed method is particularly adept for improvement of reading machines for the blind.
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