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    Mathematical expression recognition
    2.
    发明授权
    Mathematical expression recognition 有权
    数学表达式识别

    公开(公告)号：US07561737B2

    公开(公告)日：2009-07-14

    申请号：US11155604

    申请日：2005-06-20

    申请人： Yu Zou ,  Lei Huang ,  Mingqing Xu ,  Jian-Lai Zhou ,  Yue Li ,  Dongmei Zhang ,  Xiaohui Hou ,  Wenli Zhu ,  Hongyun Yang ,  Xianfang Wang ,  Jiang Wu ,  Jian Wang

    发明人： Yu Zou ,  Lei Huang ,  Mingqing Xu ,  Jian-Lai Zhou ,  Yue Li ,  Dongmei Zhang ,  Xiaohui Hou ,  Wenli Zhu ,  Hongyun Yang ,  Xianfang Wang ,  Jiang Wu ,  Jian Wang

    IPC分类号： G06K9/18

    CPC分类号： G06K9/222

    摘要： A mechanism for recognizing and inputting handwritten mathematical expressions into a computer by providing a multi-path framework is described. The framework may include symbol grouping and recognition, tabular structure analysis, subordinate sub-expression analysis, subscript/superscript analysis and character determination, and semantic structure analysis components. A method for recognizing a handwritten mathematical expression includes receiving a plurality of input strokes corresponding to a handwritten mathematical expression and providing a candidate list of recognized candidate expressions based upon the input strokes. Input strokes are grouped into symbols, tabular structures are determined, dominant symbol candidates and subordinate symbols are determined, and subscript and superscript structures are determined.

    摘要翻译： 描述了通过提供多路径框架来将手写数学表达式识别并输入到计算机中的机制。 框架可以包括符号分组和识别，表格结构分析，从属子表达分析，下标/上标分析和字符确定，以及语义结构分析组件。 用于识别手写数学表达式的方法包括接收与手写数学表达式相对应的多个输入笔画，并且基于输入的笔画提供所识别的候选表达的候选列表。 输入笔划分为符号，确定表格结构，确定主要符号候选和下级符号，并确定下标和上标结构。

    Analyzing scripts and determining characters in expression recognition
    3.
    发明授权
    Analyzing scripts and determining characters in expression recognition 有权
    分析脚本并确定表达式识别中的字符

    公开(公告)号：US07561739B2

    公开(公告)日：2009-07-14

    申请号：US11155748

    申请日：2005-06-20

    申请人： Mingqing Xu ,  Yu Zou ,  Lei Huang ,  Jian-Lai Zhou ,  Xianfang Wang ,  Xiaohui Hou ,  Dongmei Zhang ,  Zhouchen Lin ,  Jian Wang

    发明人： Mingqing Xu ,  Yu Zou ,  Lei Huang ,  Jian-Lai Zhou ,  Xianfang Wang ,  Xiaohui Hou ,  Dongmei Zhang ,  Zhouchen Lin ,  Jian Wang

    IPC分类号： G06K9/18

    CPC分类号： G06K9/222

    摘要： A mechanism for recognizing and inputting handwritten mathematical expressions into a computer by providing part of a multi-path framework is described. The part of the multi-path framework includes a subscript/superscript analysis and character determination component that is designed to identify subscript and superscript elements. A method for analyzing a handwritten mathematical expression includes receiving a symbols corresponding to handwritten mathematical expression input strokes, identifying subscript and/or superscript structures, and determining a character for each symbol of the set. A graph of vertexes and edges may be created based upon the set of symbols and the graph may be searched to determine optimized candidates.

    摘要翻译： 描述了通过提供一部分多路径框架来将手写数学表达式识别并输入计算机的机制。 多路径框架的一部分包括下标/上标分析和字符确定组件，其被设计为识别下标和上标元素。 一种用于分析手写数学表达式的方法包括接收对应于手写数学表达式输入笔画的符号，识别下标和/或上标结构，以及确定该组的每个符号的字符。 可以基于符号集创建顶点和边缘的图形，并且可以搜索图形以确定优化的候选。

    Symbol grouping and recognition in expression recognition
    5.
    发明授权
    Symbol grouping and recognition in expression recognition 有权
    表达识别中的符号分组和识别

    公开(公告)号：US07561738B2

    公开(公告)日：2009-07-14

    申请号：US11155614

    申请日：2005-06-20

    申请人： Yu Zou ,  Lei Huang ,  Jian-Lai Zhou ,  Mingqing Xu ,  Yue Li ,  Xiaohui Hou ,  Dongmei Zhang ,  Jian Wang

    发明人： Yu Zou ,  Lei Huang ,  Jian-Lai Zhou ,  Mingqing Xu ,  Yue Li ,  Xiaohui Hou ,  Dongmei Zhang ,  Jian Wang

    IPC分类号： G06K9/18

    CPC分类号： G06K9/222

    摘要： A mechanism for recognizing and inputting handwritten mathematical expressions into a computer by providing a part of a multi-path framework is described. The part of the multi-path framework includes a symbol grouping and recognition component that is designed to group input strokes that correspond to a handwritten mathematical expression into a symbol and to recognize the symbol based upon information associated with the grouped input strokes. A method for grouping and recognizing symbols of a handwritten mathematical expression includes receiving a plurality of input strokes corresponding to a handwritten mathematical expression, grouping the plurality of input strokes into symbols, recognizing the symbols based upon information, such as shape and time series information, associated with the grouped input strokes. Intra-group and inter-group information associated with the plurality of input strokes may be utilized to group the input strokes.

    摘要翻译： 描述了通过提供多路径框架的一部分来将手写数学表达式识别并输入到计算机中的机制。 多路径框架的一部分包括符号分组和识别组件，其被设计为将对应于手写数学表达式的输入笔划分组到符号中，并且基于与分组的输入笔画相关联的信息来识别符号。 一种用于分组和识别手写数学表达符号的方法包括：接收与手写数学表达式对应的多个输入笔画，将多个输入笔划分组成符号，基于诸如形状和时间序列信息的信息识别符号， 与分组的输入笔画相关联。 可以利用与多个输入笔画相关联的组内和组间信息来对输入笔画进行分组。

    Symbol grouping and recognition in expression recognition
    6.
    发明申请
    Symbol grouping and recognition in expression recognition 有权

    公开(公告)号：US20060062467A1

    公开(公告)日：2006-03-23

    申请号：US11155614

    申请日：2005-06-20

    申请人： Yu Zou ,  Lei Huang ,  Jian-Lai Zhou ,  Mingqing Xu ,  Yue Li ,  Xiaohui Hou ,  Dongmei Zhang ,  Jian Wang

    发明人： Yu Zou ,  Lei Huang ,  Jian-Lai Zhou ,  Mingqing Xu ,  Yue Li ,  Xiaohui Hou ,  Dongmei Zhang ,  Jian Wang

    IPC分类号： G06K9/18

    CPC分类号： G06K9/222

    摘要： A mechanism for recognizing and inputting handwritten mathematical expressions into a computer by providing a part of a multi-path framework is described. The part of the multi-path framework includes a symbol grouping and recognition component that is designed to group input strokes that correspond to a handwritten mathematical expression into a symbol and to recognize the symbol based upon information associated with the grouped input strokes. A method for grouping and recognizing symbols of a handwritten mathematical expression includes receiving a plurality of input strokes corresponding to a handwritten mathematical expression, grouping the plurality of input strokes into symbols, recognizing the symbols based upon information, such as shape and time series information, associated with the grouped input strokes. Intra-group and inter-group information associated with the plurality of input strokes may be utilized to group the input strokes.

    Analyzing subordinate sub-expressions in expression recognition
    7.
    发明授权
    Analyzing subordinate sub-expressions in expression recognition 有权
    分析表达式识别中的下级子表达式

    公开(公告)号：US07929767B2

    公开(公告)日：2011-04-19

    申请号：US11155785

    申请日：2005-06-20

    申请人： Mingqing Xu ,  Yu Zou ,  Lei Huang ,  Jian-Lai Zhou ,  Xiaohui Hou ,  Zhouchen Lin ,  Dongmei Zhang ,  Jian Wang

    发明人： Mingqing Xu ,  Yu Zou ,  Lei Huang ,  Jian-Lai Zhou ,  Xiaohui Hou ,  Zhouchen Lin ,  Dongmei Zhang ,  Jian Wang

    IPC分类号： G06K9/18

    CPC分类号： G06K9/00422 ,  G06K9/222 ,  G06K9/72 ,  G06K2209/01

    摘要： A mechanism for recognizing and inputting handwritten mathematical expressions into a computer by providing part of a multi-path framework is described. The part of the multi-path framework includes a subordinate sub-expression analysis component. A method for analyzing a handwritten mathematical expression for a subordinate sub-expression includes identifying sub-expressions based on dominant symbols and determining a character for potential dominant symbols based upon sub-expression information. A determination may be made whether an expression structure candidate is valid and valid expression structure candidates may be stored in a parse tree.

    摘要翻译： 描述了通过提供一部分多路径框架来将手写数学表达式识别并输入计算机的机制。 多路径框架的一部分包括从属子表达式分析组件。 用于分析用于下级子表达式的手写数学表达式的方法包括基于主要符号识别子表达，并且基于子表达信息确定潜在的主要符号的字符。 可以确定表达式结构候选是否是有效的，并且有效的表达式结构候选可以被存储在解析树中。

    Analyzing subordinate sub-expressions in expression recognition
    8.
    发明申请
    Analyzing subordinate sub-expressions in expression recognition 有权
    分析表达式识别中的下级子表达式

    公开(公告)号：US20060062471A1

    公开(公告)日：2006-03-23

    申请号：US11155785

    申请日：2005-06-20

    申请人： Mingqing Xu ,  Yu Zou ,  Lei Huang ,  Jian-Lai Zhou ,  Xiaohui Hou ,  Zhouchen Lin ,  Dongmei Zhang ,  Jian Wang

    发明人： Mingqing Xu ,  Yu Zou ,  Lei Huang ,  Jian-Lai Zhou ,  Xiaohui Hou ,  Zhouchen Lin ,  Dongmei Zhang ,  Jian Wang

    IPC分类号： G06K9/18

    CPC分类号： G06K9/00422 ,  G06K9/222 ,  G06K9/72 ,  G06K2209/01

    摘要： A mechanism for recognizing and inputting handwritten mathematical expressions into a computer by providing part of a multi-path framework is described. The part of the multi-path framework includes a subordinate sub-expression analysis component. A method for analyzing a handwritten mathematical expression for a subordinate sub-expression includes identifying sub-expressions based on dominant symbols and determining a character for potential dominant symbols based upon sub-expression information. A determination may be made whether an expression structure candidate is valid and valid expression structure candidates may be stored in a parse tree.

    摘要翻译： 描述了通过提供一部分多路径框架来将手写数学表达式识别并输入计算机的机制。 多路径框架的一部分包括从属子表达式分析组件。 用于分析用于下级子表达式的手写数学表达式的方法包括基于主要符号识别子表达，并且基于子表达信息确定潜在的主要符号的字符。 可以确定表达式结构候选是否是有效的，并且有效的表达式结构候选可以被存储在解析树中。

    Annotation Detection and Anchoring on Ink Notes
    9.
    发明申请
    Annotation Detection and Anchoring on Ink Notes 有权
    墨迹注解检测和锚定

    公开(公告)号：US20120201459A1

    公开(公告)日：2012-08-09

    申请号：US13447968

    申请日：2012-04-16

    申请人： Zhouchen Lin ,  Mingqing Xu ,  Jian Wang

    发明人： Zhouchen Lin ,  Mingqing Xu ,  Jian Wang

    IPC分类号： G06K9/34

    CPC分类号： G06F17/242

    摘要： Systems and methods for detecting annotation digital ink strokes and further associating annotation digital ink strokes with word digital ink strokes are presented. Ink strokes are captured on a writing surface and then classified as words or annotations. Annotations are then anchored to corresponding words. When words are relocated or edited on the writing surface, the anchored annotations are also relocated and may even be reshaped according to the changes in the anchored words.

    摘要翻译： 提出了用于检测注释数字墨水笔画并进一步将注释数字墨迹与字数字笔墨相关联的系统和方法。 墨水笔画被捕获在书写表面上，然后分类为单词或注释。 然后将注释锚定到相应的词。 当在书写表面上重新定位或编辑单词时，锚定的注释也被重定位，甚至可以根据锚定单词的变化进行重新整形。

    Strategies for processing annotations
    10.
    发明授权
    Strategies for processing annotations 失效
    处理注释的策略

    公开(公告)号：US07836390B2

    公开(公告)日：2010-11-16

    申请号：US11275750

    申请日：2006-01-26

    申请人： Zhouchen Lin ,  Mingqing Xu ,  Jian Wang

    发明人： Zhouchen Lin ,  Mingqing Xu ,  Jian Wang

    IPC分类号： G06F17/00

    CPC分类号： G06F17/241

    摘要： Annotation engines are described for handling annotations added to a base document. The annotation engines automatically classify the type of annotations, including, but not limited to: a highlight annotation; a blob annotation (comprising an enclosing-type annotation); an underline annotation; a vertical bracket annotation; a call-out annotation; and a free-note annotation. The annotation engines accept input in the form of a hierarchical tree of document elements and generate an output in the form of a hierarchical tree of annotation elements. Among other uses, a reflow engine can use the output of the annotation engines to properly reposition annotations within a layout-modified base document.

    摘要翻译： 描述了注释引擎来处理添加到基本文档中的注释。 注释引擎自动对注释类型进行分类，包括但不限于：高亮注释; 一个blob注释（包含一个封闭类型的注释）; 下划线注释; 垂直括号注释; 一个调用注释; 和一个免费注释注释。 注释引擎以文档元素的分层树的形式接受输入，并以注释元素的分层树的形式生成输出。 除了其他用途之外，回流引擎可以使用注释引擎的输出来在布局修改的基础文档中正确地重新定位注释。