公开(公告)号：US20060078202A1

公开(公告)日：2006-04-13

申请号：US11281462

申请日：2005-11-18

申请人： Michael Shilman ,  Zile Wei ,  Yu Zou ,  Patrice Simard ,  Sashi Raghupathy ,  F. Jones ,  Charlton Lui ,  Jian Wang

发明人： Michael Shilman ,  Zile Wei ,  Yu Zou ,  Patrice Simard ,  Sashi Raghupathy ,  F. Jones ,  Charlton Lui ,  Jian Wang

IPC分类号： G06K9/18

CPC分类号： G06K9/00409 ,  G06K9/222

摘要： Electronic ink layout analysis systems and methods provide flexibility and efficiency in organizing, analyzing, and processing digital ink. These layout analysis systems and methods allow users substantial freedom in entering electronic ink into a pen-based computer system. Using these systems and methods, a user's input digital ink is not constrained by requirements that a user write in a specific screen orientation, that a user write in one specific orientation on all portions of a page, or that a user write using a specific minimum or maximum sized stroke. Rather, the systems and methods freely allow the user to write anywhere on a given page, in any orientation or size, while still enabling effective and efficient handwriting recognition and other processing of the input digital ink.

公开(公告)号：US07397950B2

公开(公告)日：2008-07-08

申请号：US11281462

申请日：2005-11-18

申请人： Michael M. Shilman ,  Zile Wei ,  Yu Zou ,  Patrice Y. Simard ,  Sashi Raghupathy ,  F. David Jones ,  Charlton E. Lui ,  Jian Wang

发明人： Michael M. Shilman ,  Zile Wei ,  Yu Zou ,  Patrice Y. Simard ,  Sashi Raghupathy ,  F. David Jones ,  Charlton E. Lui ,  Jian Wang

IPC分类号： G06K9/18 ,  G06K9/00 ,  G06K9/34

CPC分类号： G06K9/00409 ,  G06K9/222

摘要： Electronic ink layout analysis systems and methods provide flexibility and efficiency in organizing, analyzing, and processing digital ink. These layout analysis systems and methods allow users substantial freedom in entering electronic ink into a pen-based computer system. Using these systems and methods, a user's input digital ink is not constrained by requirements that a user write in a specific screen orientation, that a user write in one specific orientation on all portions of a page, or that a user write using a specific minimum or maximum sized stroke. Rather, the systems and methods freely allow the user to write anywhere on a given page, in any orientation or size, while still enabling effective and efficient handwriting recognition and other processing of the input digital ink.

摘要翻译： 电子墨水布局分析系统和方法提供组织，分析和处理数字墨水的灵活性和效率。 这些布局分析系统和方法允许用户将电子墨水进入基于笔的计算机系统中的实质性自由。 使用这些系统和方法，用户的输入数字墨水不受用户以特定屏幕方向写入的要求的限制，即用户在页面的所有部分上以一个特定方向写入，或者用户使用特定的最小值写入 或最大冲程。 相反，系统和方法可以自由地允许用户以任何方向或大小在给定页面上的任何地方写入，同时仍然能够实现对输入数字墨水的有效和高效的手写识别和其他处理。

公开(公告)号：US07050632B2

公开(公告)日：2006-05-23

申请号：US10143865

申请日：2002-05-14

申请人： Michael M. Shilman ,  Zile Wei ,  Yu Zou ,  Patrice Y. Simard ,  Sashi Raghupathy ,  F. David Jones ,  Charlton E. Lui ,  Jian Wang

发明人： Michael M. Shilman ,  Zile Wei ,  Yu Zou ,  Patrice Y. Simard ,  Sashi Raghupathy ,  F. David Jones ,  Charlton E. Lui ,  Jian Wang

IPC分类号： G06K9/18

CPC分类号： G06K9/00409 ,  G06K9/222

摘要： Electronic ink layout analysis systems and methods provide flexibility and efficiency in organizing, analyzing, and processing digital ink. These layout analysis systems and methods allow users substantial freedom in entering electronic ink into a pen-based computer system. Using these systems and methods, a user's input digital ink is not constrained by requirements that a user write in a specific screen orientation, that a user write in one specific orientation on all portions of a page, or that a user write using a specific minimum or maximum sized stroke. Rather, the systems and methods freely allow the user to write anywhere on a given page, in any orientation or size, while still enabling effective and efficient handwriting recognition and other processing of the input digital ink.

公开(公告)号：US08204310B2

公开(公告)日：2012-06-19

申请号：US13118045

申请日：2011-05-27

申请人： Yu Zou ,  Jian Wang ,  Dongmei Zhang ,  Ming Chang ,  Shi Han

发明人： Yu Zou ,  Jian Wang ,  Dongmei Zhang ,  Ming Chang ,  Shi Han

IPC分类号： G06K9/00

CPC分类号： G06K9/00416 ,  G06K2209/011

摘要： An exemplary method for online character recognition of East Asian characters includes acquiring time sequential, online ink data for a handwritten East Asian character, conditioning the ink data to produce conditioned ink data where the conditioned ink data includes information as to writing sequence of the handwritten East Asian character and extracting features from the conditioned ink data where the features include a tangent feature, a curvature feature, a local length feature, a connection point feature and an imaginary stroke feature. Such a method may determine neighborhoods for ink data and extract features for each neighborhood. An exemplary Hidden Markov Model based character recognition system may use various exemplary methods for training and character recognition.

摘要翻译： 用于东亚字符的在线字符识别的示例性方法包括获取用于手写东亚字符的时间顺序在线墨水数据，调节墨水数据以产生经调节的墨水数据，其中调节的墨水数据包括关于写入东方手写的顺序的信息 亚洲字符和从调节的墨水数据中提取特征，其中特征包括切线特征，曲率特征，局部长度特征，连接点特征和假想笔划特征。 这种方法可以确定墨水数据的邻域并提取每个邻域的特征。 基于示例性的基于隐马尔可夫模型的角色识别系统可以使用用于训练和角色识别的各种示例性方法。

公开(公告)号：US07974472B2

公开(公告)日：2011-07-05

申请号：US11772032

申请日：2007-06-29

申请人： Yu Zou ,  Ming Chang ,  Shi Han ,  Dongmei Zhang ,  Jian Wang

发明人： Yu Zou ,  Ming Chang ,  Shi Han ,  Dongmei Zhang ,  Jian Wang

IPC分类号： G06K9/00

CPC分类号： G06K9/00416 ,  G06K2209/011

摘要： An exemplary method for online character recognition of East Asian characters includes acquiring time sequential, online ink data for a handwritten East Asian character, conditioning the ink data to produce conditioned ink data where the conditioned ink data includes information as to writing sequence of the handwritten East Asian character and extracting features from the conditioned ink data where the features include a tangent feature, a curvature feature, a local length feature, a connection point feature and an imaginary stroke feature. Such a method may determine neighborhoods for ink data and extract features for each neighborhood. An exemplary Hidden Markov Model based character recognition system may use various exemplary methods for training and character recognition.

摘要翻译： 用于东亚字符的在线字符识别的示例性方法包括获取用于手写东亚字符的时间顺序在线墨水数据，调节墨水数据以产生经调节的墨水数据，其中调节的墨水数据包括关于写入东方手写的顺序的信息 亚洲字符和从调节的墨水数据中提取特征，其中特征包括切线特征，曲率特征，局部长度特征，连接点特征和假想笔划特征。 这种方法可以确定墨水数据的邻域并提取每个邻域的特征。 基于示例性的基于隐马尔可夫模型的角色识别系统可以使用用于训练和角色识别的各种示例性方法。

公开(公告)号：US07805004B2

公开(公告)日：2010-09-28

申请号：US11680566

申请日：2007-02-28

申请人： Shi Han ,  Yu Zou ,  Ming Chang ,  Peng Liu ,  Yi-Jian Wu ,  Lei Ma ,  Frank Soong ,  Dongmei Zhang ,  Jian Wang

发明人： Shi Han ,  Yu Zou ,  Ming Chang ,  Peng Liu ,  Yi-Jian Wu ,  Lei Ma ,  Frank Soong ,  Dongmei Zhang ,  Jian Wang

IPC分类号： G06K9/62

CPC分类号： G06K9/6807 ,  G06K9/468 ,  G06K2209/01 ,  G06K2209/011

摘要： Exemplary techniques are described for selecting radical sets for use in probabilistic East Asian character recognition algorithms. An exemplary technique includes applying a decomposition rule to each East Asian character of the set to generate a progressive splitting graph where the progressive splitting graph comprises radicals as nodes, formulating an optimization problem to find an optimal set of radicals to represent the set of East Asian characters using maximum likelihood and minimum description length and solving the optimization problem for the optimal set of radicals. Another exemplary technique includes selecting an optimal set of radicals by using a general function that characterizes a radical with respect to other East Asian characters and a complex function that characterizes complexity of a radical.

摘要翻译： 描述了用于选择在概率东亚字符识别算法中使用的激进集合的示例性技术。 一个示例性的技术包括将分解规则应用于集合的每个东亚字符以生成逐行分割图，其中渐进分割图包括基数作为节点，制定优化问题以找到最佳的一组基团以表示东亚集 字符使用最大似然和最小描述长度，并解决优化问题的最佳组的自由基。 另一个示例性技术包括通过使用表征相对于其他东亚字符的基数的一般函数和表征激进的复杂度的复杂函数来选择最佳的自由基集合。

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。

公开(公告)号：US07450125B2

公开(公告)日：2008-11-11

申请号：US11446491

申请日：2006-06-01

申请人： Jian Wang ,  Yu Zou ,  Liyong Chen ,  Siwei Lyu

发明人： Jian Wang ,  Yu Zou ,  Liyong Chen ,  Siwei Lyu

IPC分类号： G06T11/20

CPC分类号： G06T11/203 ,  G06K9/222

摘要： A method and system for compressing and displaying a digital ink trace. Raw ink data is smoothed, and sharp points of the smoothed line are found. Curve-fitting is then used to generate a mathematical expression that defines the line segments between adjacent sharp points. The ink trace then is represented by a backbone spline that includes the sharp points and the mathematical expressions for the line segments. Thickness information, such as pressure or acceleration information, is combined with the backbone spline to provide a compressed ink file that represents a contour curve of the original ink trace. A display module uses an algorithm to separate the contour curve into a sequence of straight lines. A set of pixels is then generated for the display of each straight line using a novel antialiasing method. The pixels at the ends of adjacent straight lines are aligned using a weighting algorithm.

摘要翻译： 一种用于压缩和显示数字墨迹的方法和系统。 原始油墨数据平滑，找到平滑线的尖点。 然后使用曲线拟合来生成定义相邻尖点之间的线段的数学表达式。 然后，油墨迹线由包括尖锐点和线段的数学表达式的主干样条表示。 将厚度信息（例如压力或加速度信息）与骨架花键组合，以提供表示原始油墨迹线的轮廓曲线的压缩油墨文件。 显示模块使用算​​法将轮廓曲线分成直线序列。 然后使用新颖的抗锯齿方法生成一组像素用于每条直线的显示。 使用加权算法将相邻直线的末端处的像素对准。

公开(公告)号：US07298903B2

公开(公告)日：2007-11-20

申请号：US09895429

申请日：2001-06-28

申请人： Jian Wang ,  Haibin Ling ,  Siwei Lyu ,  Yu Zou

发明人： Jian Wang ,  Haibin Ling ,  Siwei Lyu ,  Yu Zou

IPC分类号： G06K9/18 ,  G06K9/00

CPC分类号： G06K9/00456

摘要： A system for separating text and drawings in a digital ink file (e.g., a handwritten digital ink file). A stroke analyzer classifies single strokes that have been input by a user as “text” or “unknown.” The stroke analyzer utilizes a trainable classifier, such as a support vector machine. A grouping component is provided that groups text strokes in an attempt to form text objects (e.g., words, characters, or letters). The grouping component also groups unknown strokes in an attempt to form objects (e.g., shapes, drawings, or even text). A trainable classifier, such as a support vector machine, evaluates the grouped strokes to determine if they are objects.

摘要翻译： 用于分离数字墨水文件（例如，手写数字墨水文件）中的文本和图纸的系统。 笔划分析器将用户输入的单笔划分为“文字”或“未知”。 笔划分析仪使用可分类的分类器，例如支持向量机。 提供了分组组件，其组合文本笔画以试图形成文本对象（例如，单词，字符或字母）。 分组组件还组合未知笔画以试图形成对象（例如，形状，图形，甚至文本）。 可训练的分类器，例如支持向量机，评估分组的笔画以确定它们是否是对象。

公开(公告)号：US07295708B2

公开(公告)日：2007-11-13

申请号：US10850680

申请日：2004-05-20

申请人： Tongxian Chen ,  Zhouchen Lin ,  Jian Wang ,  Xianfang Wang ,  Jiang Wu ,  Yu Zou

发明人： Tongxian Chen ,  Zhouchen Lin ,  Jian Wang ,  Xianfang Wang ,  Jiang Wu ,  Yu Zou

IPC分类号： G06K9/00

CPC分类号： G06K9/00463 ,  G06F17/2241 ,  G06F17/242 ,  G06K9/222

摘要： A system and method for detection of a list in ink input is provided. A detector is provided that may detect a list such as a bulleted or numbered list of items in ink input. A group of lines may first be selected as a candidate list. Indentation level clustering and bullet detection may then be performed to determine the structure of the list. Bullet detection may be performed by detecting bullet partners, which are pairs of lines at the same indentation level that may begin with bullet candidates with similar features. The features of the bullet candidates in a pair of lines may be used to determine the likelihood of whether the pair of lines may be bullet partners. Finally, the structure of the list may be determined, including the relationship among the list items.

摘要翻译： 提供了一种用于检测墨水输入列表的系统和方法。 提供了一种检测器，其可以检测墨水输入中的诸如项目符号或编号列表的列表。 可以首先选择一组行作为候选列表。 然后可以执行缩进级聚类和子弹检测以确定列表的结构。 子弹检测可以通过检测子弹对象来执行，这些对象是相同缩进级别的线对，可以从类似特征的子弹候选开始。 可以使用一对线中的子弹候选者的特征来确定该对线是否可能是子弹对象的可能性。 最后，可以确定列表的结构，包括列表项之间的关系。