公开(公告)号：US07536051B2

公开(公告)日：2009-05-19

申请号：US11060120

申请日：2005-02-17

申请人： Zhouchen Lin ,  Liyong Chen ,  Jian Wang

发明人： Zhouchen Lin ,  Liyong Chen ,  Jian Wang

IPC分类号： G06K9/00

CPC分类号： G06K9/222

摘要： X-y positions of a digital pen's tip may be determined by using a calibration parameter to map the x-y positions of the respective centers of images captured by the pen's camera. The calibration parameter may be generated by iteratively calculating estimates of the calibration parameter. The iteratively calculated estimates may be based on a gradient of an error function of the iteratively generated estimates. Calibration input data may be produced by a user placing the pen tip in a fixed location on a surface, which may be a positionally encoded medium, such as paper, and then rotating the pen and/or moving the opposite end of the pen in various directions to capture multiple images for use in generating the calibration parameter. A user may perform such a calibration procedure without the need for complicated calibration equipment typically used in connection with conventional calibration techniques.

摘要翻译： 数字笔尖的X-Y位置可以通过使用校准参数来确定由笔的相机拍摄的各个中心的x-y位置来确定。 可以通过迭代地计算校准参数的估计来生成校准参数。 迭代计算的估计可以基于迭代产生的估计的误差函数的梯度。 校准输入数据可以由用户将笔尖放置在表面上的固定位置（其可以是位置编码的介质，例如纸）然后旋转笔和/或使笔的相对端移动到各种 捕获多个图像以用于生成校准参数的方向。 用户可以执行这样的校准过程，而不需要通常结合常规校准技术使用的复杂校准设备。

公开(公告)号：US20060182343A1

公开(公告)日：2006-08-17

申请号：US11060120

申请日：2005-02-17

申请人： Zhouchen Lin ,  Liyong Chen ,  Jian Wang

发明人： Zhouchen Lin ,  Liyong Chen ,  Jian Wang

IPC分类号： G06K9/00

CPC分类号： G06K9/222

摘要： X-y positions of a digital pen's tip may be determined by using a calibration parameter to map the x-y positions of the respective centers of images captured by the pen's camera. The calibration parameter may be generated by iteratively calculating estimates of the calibration parameter. The iteratively calculated estimates may be based on a gradient of an error function of the iteratively generated estimates. Calibration input data may be produced by a user placing the pen tip in a fixed location on a surface, which may be a positionally encoded medium, such as paper, and then rotating the pen and/or moving the opposite end of the pen in various directions to capture multiple images for use in generating the calibration parameter. A user may perform such a calibration procedure without the need for complicated calibration equipment typically used in connection with conventional calibration techniques.

公开(公告)号：US07403658B2

公开(公告)日：2008-07-22

申请号：US11106725

申请日：2005-04-15

申请人： Zhouchen Lin ,  Liyong Chen ,  Yingnong Dang ,  Jian Wang

发明人： Zhouchen Lin ,  Liyong Chen ,  Yingnong Dang ,  Jian Wang

IPC分类号： G06K9/62

CPC分类号： G06F3/03545

摘要： A method and apparatus for determining a homography between an image and an expected image is described. The homography accounts for differences in perspective of a camera viewing an objective plane of the image, in some examples, a paper with information on it.

摘要翻译： 描述了用于确定图像和预期图像之间的单应性的方法和装置。 单相法考虑了观察图像的客观平面的相机的视角的差异，在一些示例中，具有关于它的信息的论文。

公开(公告)号：US20060232569A1

公开(公告)日：2006-10-19

申请号：US11106725

申请日：2005-04-15

申请人： Zhouchen Lin ,  Liyong Chen ,  Yingnong Dang ,  Jian Wang

发明人： Zhouchen Lin ,  Liyong Chen ,  Yingnong Dang ,  Jian Wang

IPC分类号： G09G5/00

CPC分类号： G06F3/03545

摘要： A method and apparatus for determining a homography between an image and an expected image is described. The homography accounts for differences in perspective of a camera viewing an objective plane of the image, in some examples, a paper with information on it.

摘要翻译： 描述了用于确定图像和预期图像之间的单应性的方法和装置。 单相法考虑了观察图像的客观平面的相机的视角的差异，在一些示例中，具有关于它的信息的论文。

公开(公告)号：US07657094B2

公开(公告)日：2010-02-02

申请号：US11321493

申请日：2005-12-29

申请人： Zhouchen Lin ,  Liang Wan ,  Chun-Hui Hu ,  Jian Wang

发明人： Zhouchen Lin ,  Liang Wan ,  Chun-Hui Hu ,  Jian Wang

IPC分类号： G06K9/00

CPC分类号： G06K9/42 ,  G06K9/00416 ,  G06K2209/01

摘要： Methods and systems for converting text into natural personal handwriting are provided. One aspect relates to the training of a computer to recognize a user's handwriting style. In one embodiment, the computer receives handwriting samples of at least one character written by the user, such as the character being provided as the beginning, middle, or ending character among a plurality of other characters. Further embodiments allow for increased personalization of the handwriting. Another aspect relates to system and methods for displaying a representation of a computer user's handwriting. In one embodiment, the handwriting comprises variant shapes of letters, personalized connection style between letters, and connection parts that look pressure-sensitive. In another embodiment, characters are adjusted, such as cutting portions of the character to create a more realistic recreation and synthesis of the handwriting.

摘要翻译： 提供了将文本转换为自然人手写的方法和系统。 一方面涉及计算机的训练以识别用户的手写风格。 在一个实施例中，计算机接收由用户写入的至少一个字符的笔迹样本，诸如被提供为多个其他字符中的开始，中间或结束字符的字符。 进一步的实施例允许增加笔迹的个性化。 另一方面涉及用于显示计算机用户手写表示的系统和方法。 在一个实施例中，笔迹包括字母的变形形状，字母之间的个性化连接样式以及看起来对压力敏感的连接部分。 在另一个实施例中，字符被调整，例如切割角色的部分以创建更实际的娱乐和手写的合成。

公开(公告)号：US07593572B2

公开(公告)日：2009-09-22

申请号：US11315635

申请日：2006-02-09

申请人： Zhouchen Lin ,  Yantao Li ,  Yu Zou ,  Xianfang Wang ,  Jian Wang

发明人： Zhouchen Lin ,  Yantao Li ,  Yu Zou ,  Xianfang Wang ,  Jian Wang

IPC分类号： G06K9/00

CPC分类号： G06K9/00402 ,  G06K9/6277

摘要： Ink-parser-parameter optimization may be performed via parallel processing to accelerate searching for a set of optimal ink-parser parameters. Evaluators may parse pages of ink notes with different groups of parameters and may compute corresponding values for evaluation functions. Separate evaluation functions may be defined for the following types of ink-parker parsing engines: writing parser, writing/drawing classification, table detection, and list detection. A searcher may perform a grid-searching algorithm or a genetic algorithm to generate groups of parameters and may then pass the parameters to available evaluators for evaluation until evaluation-function values for a group of parameters satisfy a convergence condition.

摘要翻译： 墨水分析器参数优化可以通过并行处理来执行，以加速搜索一组最佳墨水解析器参数。 评估者可以用不同的参数组解析墨迹的页面，并可以计算评估函数的相应值。 可以为以下类型的墨水 - 停顿解析引擎定义单独的评估功能：写入解析器，写入/绘图分类，表格检测和列表检测。 搜索者可以执行网格搜索算法或遗传算法来生成参数组，然后可以将参数传递给可用的评估者进行评估，直到一组参数的评估函数值满足收敛条件为止。

公开(公告)号：US07542976B2

公开(公告)日：2009-06-02

申请号：US11112637

申请日：2005-04-22

申请人： Jian Wang ,  Zhouchen Lin ,  Yue Li ,  Chunhui Zhang ,  Yingnong Dang ,  Jiang Wu ,  Qiang Wang

发明人： Jian Wang ,  Zhouchen Lin ,  Yue Li ,  Chunhui Zhang ,  Yingnong Dang ,  Jiang Wu ,  Qiang Wang

IPC分类号： G06F7/00 ,  G06F17/00

CPC分类号： G06F3/03545

摘要： In accordance with embodiments of the invention, local metadata is embedded into an embedded interactive code document by combining a first m-array and a second m-array to generate a combined m-array with encoded local metadata such that a start position of the second m-array in the combined m-array is shifted, by an amount that is based on the local metadata, relative to a start position of the first m-array in the combined m-array. The first m-array and the second m-array may contain the same repeating bit sequence. Local metadata may be decoded from the embedded interactive code document by decoding the local metadata from the combined m-array by determining the amount by which the second m-array is shifted, relative to the first m-array, in the combined m-array.

摘要翻译： 根据本发明的实施例，通过组合第一m阵列和第二m阵列来将本地元数据嵌入到嵌入式交互式代码文档中，以生成具有编码的本地元数据的组合m阵列，使得第二m阵列的开始位置 组合的m阵列中的m阵列相对于组合的m阵列中的第一m阵列的开始位置偏移基于本地元数据的量。 第一m阵列和第二m阵列可以包含相同的重复比特序列。 本地元数据可以通过从组合的m阵列中解码本地元数据而从嵌入式交互式代码文档中解码，通过确定第二m阵列相对于第一m阵列在组合的m阵列中被移位的量 。

公开(公告)号：US20070154094A1

公开(公告)日：2007-07-05

申请号：US11321493

申请日：2005-12-29

申请人： Zhouchen Lin ,  Liang Wan ,  Chun-Hui Hu ,  Jian Wang

发明人： Zhouchen Lin ,  Liang Wan ,  Chun-Hui Hu ,  Jian Wang

IPC分类号： G06K9/00 ,  G06K9/18

CPC分类号： G06K9/42 ,  G06K9/00416 ,  G06K2209/01

摘要： Methods and systems for converting text into natural personal handwriting are provided. One aspect relates to the training of a computer to recognize a user's handwriting style. In one embodiment, the computer receives handwriting samples of at least one character written by the user, such as the character being provided as the beginning, middle, or ending character among a plurality of other characters. Further embodiments allow for increased personalization of the handwriting. Another aspect relates to system and methods for displaying a representation of a computer user's handwriting. In one embodiment, the handwriting comprises variant shapes of letters, personalized connection style between letters, and connection parts that look pressure-sensitive. In another embodiment, characters are adjusted, such as cutting portions of the character to create a more realistic recreation and synthesis of the handwriting.

摘要翻译： 提供了将文本转换为自然人手写的方法和系统。 一方面涉及计算机的训练以识别用户的手写风格。 在一个实施例中，计算机接收由用户写入的至少一个字符的笔迹样本，诸如被提供为多个其他字符中的开始，中间或结束字符的字符。 进一步的实施例允许增加笔迹的个性化。 另一方面涉及用于显示计算机用户手写表示的系统和方法。 在一个实施例中，笔迹包括字母的变形形状，字母之间的个性化连接样式以及看起来对压力敏感的连接部分。 在另一个实施例中，字符被调整，例如切割角色的部分以创建更实际的娱乐和手写的合成。

公开(公告)号：US20070140566A1

公开(公告)日：2007-06-21

申请号：US11314554

申请日：2005-12-21

申请人： Zhouchen Lin ,  Junfeng He ,  Zhicheng Zhong ,  Chun-Hui Hu ,  Jian Wang

发明人： Zhouchen Lin ,  Junfeng He ,  Zhicheng Zhong ,  Chun-Hui Hu ,  Jian Wang

IPC分类号： G06K9/46

CPC分类号： G06K9/00416 ,  G06K9/00449

摘要： Computer-readable media having computer-executable instructions and apparatuses detect a structured handwritten object is detected in a handwritten document. A primitive structure, which is associated with a set of component objects, is formed. A candidate handwritten object is identified by detecting a corresponding logical structure. A classifier for the candidate handwritten object is determined. Consequently, the candidate handwritten object is validated from the classifier.

摘要翻译： 具有计算机可执行指令和装置的计算机可读介质检测结构化手写对象在手写文档中被检测。 形成与一组组件对象相关联的原始结构。 通过检测相应的逻辑结构来识别候选手写对象。 确定候选手写物体的分类器。 因此，候选手写对象从分类器得到验证。

公开(公告)号：US20070133877A1

公开(公告)日：2007-06-14

申请号：US11301761

申请日：2005-12-13

申请人： Xianfang Wang ,  Zhouchen Lin ,  Jian Wang

发明人： Xianfang Wang ,  Zhouchen Lin ,  Jian Wang

IPC分类号： G06K9/00

CPC分类号： G06K9/222 ,  G06K9/00422 ,  G06K9/6835

摘要： Computer-readable media having computer-executable instructions distinguish the script type of at least one portion of a writing input. At least one sub-word of a writing line of a handwritten document is identified and is processed to determine the associated writing style that includes a cursive writing style and a hand-printed writing style. The writing line is consequently associated with a script type. The script type of a writing line is determined from the script types of the sub-words in the writing line. When the number of sub-words having a first script type is greater than the number of sub-words having a second script type, the script type of the writing line is categorized as the first script type. In addition, a script analyzer determines a writing style of at least one sub-word and selects one of a plurality of neural networks to categorize the script type of a writing line.

摘要翻译： 具有计算机可执行指令的计算机可读介质区分写入输入的至少一部分的脚本类型。 识别手写文件的写作线的至少一个子词，并被处理以确定包括草书写作风格和手写书写风格的相关联的书写风格。 因此，写作行与脚本类型相关联。 写作行的脚本类型由写入行中的子字的脚本类型确定。 当具有第一脚本类型的子字的数量大于具有第二脚本类型的子字的数量时，写入行的脚本类型被分类为第一脚本类型。 此外，脚本分析器确定至少一个子字的写入风格，并且选择多个神经网络中的一个以对写入线的脚本类型进行分类。