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11. 发明授权

US07430497B2 Statistical model for global localization 有权
标题翻译：全球定位统计模型
公开(公告)号：US07430497B2
公开(公告)日：2008-09-30
申请号：US10284421
申请日：2002-10-31
申请人： Jian Wang , Zheng Chen , Xiaoxu Ma , Yingnong Dang , Liyong Chen , Jiang Wu
发明人： Jian Wang , Zheng Chen , Xiaoxu Ma , Yingnong Dang , Liyong Chen , Jiang Wu
IPC分类号： G06F17/00
CPC分类号： G06F3/03545 , G06F3/0321 , G06K9/222
摘要： A system and process for determining the location of a captured image from a larger image is described. Using a list of determined locations, the system is able to determine the best or most likely path of a pen tip.
摘要翻译：描述用于确定来自较大图像的拍摄图像的位置的系统和过程。使用确定位置的列表，系统能够确定笔尖的最佳或最可能的路径。

12. 发明授权

US07885465B2 Document portion identification by fast image mapping 有权
标题翻译：通过快速图像映射的文档部分识别
公开(公告)号：US07885465B2
公开(公告)日：2011-02-08
申请号：US12211473
申请日：2008-09-16
申请人： Jian Wang , Yingnong Dang , Qiang Wang , Liyong Chen , Xiaoxu Ma
发明人： Jian Wang , Yingnong Dang , Qiang Wang , Liyong Chen , Xiaoxu Ma
IPC分类号： G06K9/68 , G06K9/62 , G06K19/06 , G06F3/033
CPC分类号： G06F3/03545 , G06F3/0321
摘要： An efficient technique is provided for determining a portion of a document corresponding to a captured image. Areas of a document in which the pattern is at least partially obscured are identified. A reference pixel in the image is selected, and an offset between the pixel and the pattern is determined. A pixel-by-pixel comparison is then made of the image with the document such that the reference pixel is only compared with locations in the document that are both within the identified areas and have the determined offset from the pattern. The comparison with the highest correspondence between the image pixels and the electronic document then identifies the position of the reference pixel relative to the electronic document.
摘要翻译：提供了一种用于确定与捕获图像相对应的文档的一部分的有效技术。识别出图案至少部分模糊的文档的区域。选择图像中的参考像素，并且确定像素和图案之间的偏移。然后，对具有文档的图像进行逐像素比较，使得仅将参考像素与文档中位于所识别的区域内的位置进行比较，并且具有从图案确定的偏移。与图像像素和电子文档之间的最高对应关系的比较然后识别参考像素相对于电子文档的位置。

13. 发明授权

US07528848B2 Embedded interaction code decoding for a liquid crystal display 有权
标题翻译：用于液晶显示器的嵌入式交互码解码
公开(公告)号：US07528848B2
公开(公告)日：2009-05-05
申请号：US11169744
申请日：2005-06-30
申请人： An Xu , Chunhui Zhang , Jian Wang , Liyong Chen , Qiang Wang , Yingnong Dang
发明人： An Xu , Chunhui Zhang , Jian Wang , Liyong Chen , Qiang Wang , Yingnong Dang
IPC分类号： G09G5/00
CPC分类号： G06F3/03545
摘要： A method and system for decoding data on a medium that is captured by an input device is described. The method decodes a symbol design, such as an embedded interaction code (EIC), on a display screen, such as a liquid crystal display (LCD). An image that is captured by an input device, such as a universal pen-type input device with a camera, is received. The captured image is processed to output an extracted bit stream. Position data and/or metadata information is decoded from the extracted bit stream and a position of the captured image with respect to a screen of the LCD is determined based upon the decoded position data. The EIC pattern may be recognized from LCD pixel grids and a bit stream of EIC bits may be extracted based upon the recognized EIC pattern.
摘要翻译：描述用于对由输入装置捕获的介质上的数据进行解码的方法和系统。该方法在诸如液晶显示器（LCD）的显示屏上解码符号设计，例如嵌入式交互码（EIC）。接收由输入装置拍摄的图像，例如具有照相机的通用笔型输入装置。捕获的图像被处理以输出提取的比特流。位置数据和/或元数据信息从提取的比特流解码，并且基于解码的位置数据确定捕获图像相对于LCD的屏幕的位置。可以从LCD像素网格识别EIC图案，并且可以基于所识别的EIC图案来提取EIC位的比特流。

14. 发明申请

US20050201621A1 Strokes localization by m-array decoding and fast image matching 失效
标题翻译：通过m阵列解码和快速图像匹配进行笔画定位
公开(公告)号：US20050201621A1
公开(公告)日：2005-09-15
申请号：US10759357
申请日：2004-01-16
申请人： Jian Wang , Yingnong Dang , Qiang Wang , Liyong Chen , Xiaoxu Ma
发明人： Jian Wang , Yingnong Dang , Qiang Wang , Liyong Chen , Xiaoxu Ma
IPC分类号： G06T1/00 , B60Q1/14 , G06F3/03 , G06F3/033 , G06F3/042 , G06K9/00 , G06K9/22 , G06K9/46 , G09G5/00
CPC分类号： G06F3/03545 , G06F3/0321
摘要： Systems and methods that determine a path of a pen tip as the pen tip is moved across a document are described. The document is watermarked with a maze pattern from which encoded position information is determined. A sequence of images is captured by a camera that is located in a pen. The path of the pen tip is determined by decoding the associated maze pattern and by matching the captured images with document images. If the position coordinates of any frame that is associated with a stroke cannot be determined from m-array decoding, the frames are transformed and then matched with an area of a document image. Once the position coordinates of at least one frame is determined, the position coordinates of other frames are determined by matching the frames in a neighboring area.
摘要翻译：描述当笔尖移动通过文档时确定笔尖的路径的系统和方法。文档用迷宫图案加水印，从而确定编码位置信息。图像序列由位于笔中的相机捕获。笔尖的路径通过解码相关联的迷宫图案并通过将拍摄的图像与文档图像相匹配来确定。如果不能从m阵列解码中确定与笔划相关联的任何帧的位置坐标，则将帧变换，然后与文档图像的区域匹配。一旦确定了至少一帧的位置坐标，则通过匹配相邻区域中的帧来确定其他帧的位置坐标。

15. 发明申请

US20050147281A1 Local localization using fast image match 有权
标题翻译：本地本地化使用快速图像匹配
公开(公告)号：US20050147281A1
公开(公告)日：2005-07-07
申请号：US10752081
申请日：2004-01-07
申请人： Jian Wang , Liyong Chen , Yingnong Dang , Qiang Wang , Xiaoxu Ma
发明人： Jian Wang , Liyong Chen , Yingnong Dang , Qiang Wang , Xiaoxu Ma
IPC分类号： G06K9/20 , G06F3/00 , G06F3/03 , G06F3/033 , G06F17/30 , G06K9/00 , G06K9/22 , G06K9/24 , G06K9/30 , G06K9/34 , G06K9/50 , G06K9/62 , G06T1/00 , G06T7/00 , G06T7/60
CPC分类号： G06F3/0321 , G06F3/03545 , G06K9/222 , G06K9/24 , G06T7/74
摘要： An efficient technique is disclosed for determining a portion of a document corresponding to a captured image. When a user employs a pen to create a stroke in a document, images of the document are captured by a camera mounted on the pen. While the location of some of the images will be determined from, for example, an analysis of a pattern on the document that is captured by the image or a pixel-by-pixel comparison of the image with the document, the location of other images will be determined by segmenting the sequence of images into groups that correspond to the shape of the stroke. Information relating to located images in a segment can then be employed to determine the position of unlocated images in the segment. For example, a document search region for an unlocated image can be established based upon the position of a previous located image and a maximum velocity or acceleration of the pen. The rotation and scale of the unlocated image are estimated as the same of the located image, and the unlocated image is warped using the rotation and scale. A pixel-by-pixel comparison can then be made between the warped unlocated image and the document search region. Further, if the warped unlocated image is matched successfully, the transform parameters of the image can be further refined.
摘要翻译：公开了一种用于确定与捕获图像相对应的文档的一部分的有效技术。当用户使用笔在文档中创建笔画时，文档的图像由安装在笔上的相机捕获。虽然一些图像的位置将通过例如对由图像捕获的文档上的图案或图像与文档的逐像素比较的分析来确定其他图像的位置将通过将图像序列分割成对应于笔画形状的组来确定。然后可以使用与片段中的定位图像相关的信息来确定片段中未定位图像的位置。例如，可以基于先前定位的图像的位置和笔的最大速度或加速度来建立用于未定位图像的文档搜索区域。未定位图像的旋转和缩放被估计为与所定位的图像相同，并且使用旋转和刻度来扭曲未定位的图像。然后可以在翘曲的未定位图像和文档搜索区域之间进行逐像素比较。此外，如果翘曲的未定位图像成功匹配，则可以进一步改进图像的变换参数。

16. 发明授权

US07463774B2 Global localization by fast image matching 有权
标题翻译：通过快速图像匹配进行全球定位
公开(公告)号：US07463774B2
公开(公告)日：2008-12-09
申请号：US10752086
申请日：2004-01-07
申请人： Jian Wang , Yingnong Dang , Qiang Wang , Liyong Chen , Xiaoxu Ma
发明人： Jian Wang , Yingnong Dang , Qiang Wang , Liyong Chen , Xiaoxu Ma
IPC分类号： G06K9/68
CPC分类号： G06F3/03545 , G06F3/0321
摘要： An efficient technique is provided for determining a portion of a document corresponding to a captured image. Areas of a document in which the pattern is at least partially obscured are identified. A reference pixel in the image is selected, and an offset between the pixel and the pattern is determined. A pixel-by-pixel comparison is then made of the image with the document such that the reference pixel is only compared with locations in the document that are both within the identified areas and have the determined offset from the pattern. The comparison with the highest correspondence between the image pixels and the electronic document then identifies the position of the reference pixel relative to the electronic document.
摘要翻译：提供了一种用于确定与捕获图像相对应的文档的一部分的有效技术。识别出图案至少部分模糊的文档的区域。选择图像中的参考像素，并且确定像素和图案之间的偏移。然后，对具有文档的图像进行逐像素比较，使得仅将参考像素与文档中位于所识别的区域内的位置进行比较，并且具有从图案确定的偏移。与图像像素和电子文档之间的最高对应关系的比较然后识别参考像素相对于电子文档的位置。

17. 发明授权

US07263224B2 Strokes localization by m-array decoding and fast image matching 失效
标题翻译：通过m阵列解码和快速图像匹配进行笔画定位
公开(公告)号：US07263224B2
公开(公告)日：2007-08-28
申请号：US10759357
申请日：2004-01-16
申请人： Jian Wang , Yingnong Dang , Qiang Wang , Liyong Chen , Xiaoxu Ma
发明人： Jian Wang , Yingnong Dang , Qiang Wang , Liyong Chen , Xiaoxu Ma
IPC分类号： G06K9/00
CPC分类号： G06F3/03545 , G06F3/0321
摘要： Systems and methods that determine a path of a pen tip as the pen tip is moved across a document are described. The document is watermarked with a maze pattern from which encoded position information is determined. A sequence of images is captured by a camera that is located in a pen. The path of the pen tip is determined by decoding the associated maze pattern and by matching the captured images with document images. If the position coordinates of any frame that is associated with a stroke cannot be determined from m-array decoding, the frames are transformed and then matched with an area of a document image. Once the position coordinates of at least one frame is determined, the position coordinates of other frames are determined by matching the frames in a neighboring area.
摘要翻译：描述当笔尖移动通过文档时确定笔尖的路径的系统和方法。文档用迷宫图案加水印，从而确定编码位置信息。图像序列由位于笔中的相机捕获。笔尖的路径通过解码相关联的迷宫图案并通过将拍摄的图像与文档图像相匹配来确定。如果不能从m阵列解码中确定与笔划相关联的任何帧的位置坐标，则将帧变换，然后与文档图像的区域匹配。一旦确定了至少一帧的位置坐标，则通过匹配相邻区域中的帧来确定其他帧的位置坐标。

18. 发明申请

US20050147299A1 Global localization by fast image matching 有权
标题翻译：通过快速图像匹配进行全球定位
公开(公告)号：US20050147299A1
公开(公告)日：2005-07-07
申请号：US10752086
申请日：2004-01-07
申请人： Jian Wang , Yingnong Dang , Qiang Wang , Liyong Chen , Xiaoxu Ma
发明人： Jian Wang , Yingnong Dang , Qiang Wang , Liyong Chen , Xiaoxu Ma
IPC分类号： G06T7/00 , G06F3/03 , G06F3/033 , G06K19/06 , G06K9/00
CPC分类号： G06F3/03545 , G06F3/0321
摘要： An efficient technique is provided for determining a portion of a document corresponding to a captured image. Areas of a document in which the pattern is at least partially obscured are identified. A reference pixel in the image is selected, and an offset between the pixel and the pattern is determined. A pixel-by-pixel comparison is then made of the image with the document such that the reference pixel is only compared with locations in the document that are both within the identified areas and have the determined offset from the pattern. The comparison with the highest correspondence between the image pixels and the electronic document then identifies the position of the reference pixel relative to the electronic document.
摘要翻译：提供了一种用于确定与捕获图像相对应的文档的一部分的有效技术。识别出图案至少部分模糊的文档的区域。选择图像中的参考像素，并且确定像素和图案之间的偏移。然后，对具有文档的图像进行逐像素比较，使得仅将参考像素与文档中位于所识别的区域内的位置进行比较，并且具有从图案确定的偏移。与图像像素和电子文档之间的最高对应关系的比较然后识别参考像素相对于电子文档的位置。

19. 发明授权

US07607076B2 Embedded interaction code document 有权
标题翻译：嵌入式交互代码文档
公开(公告)号：US07607076B2
公开(公告)日：2009-10-20
申请号：US11062166
申请日：2005-02-18
申请人： Jian Wang , Liyong Chen , Youjun Liu , Jiang Wu
发明人： Jian Wang , Liyong Chen , Youjun Liu , Jiang Wu
IPC分类号： G06F17/00
CPC分类号： G06F17/3002 , G06F17/242 , G06F17/30056
摘要： Methods and apparatuses that synchronize a paper document to an associated digital document by establishing a mapping. An embedded interactive code (EIC) Document is created as a digital file that serves as an intermediate tier between the paper document and the digital document. Both the paper document and the EIC document are generated while printing the paper document. The EIC document records the corresponding EIC array allocations and a unique document identification number. An image capturing pen may generate a stroke on any page of paper document. With the EIC document, the methods and apparatuses inform an application the page and location on the page of the stroke.
摘要翻译：通过建立映射将纸质文档同步到相关联的数字文档的方法和装置。嵌入式交互式代码（EIC）文档被创建为作为纸质文档和数字文档之间的中间层的数字文件。在打印纸张文档时都会生成纸张文档和EIC文档。 EIC文件记录相应的EIC阵列分配和唯一的文档标识号。图像捕获笔可以在纸张文档的任何页面上产生笔画。使用EIC文件，方法和装置通知应用程序在页面上的页面和位置。

20. 发明申请

US20060190818A1 Embedded interaction code document 有权
公开(公告)号：US20060190818A1
公开(公告)日：2006-08-24
申请号：US11062166
申请日：2005-02-18
申请人： Jian Wang , Liyong Chen , Youjun Liu , Jiang Wu
发明人： Jian Wang , Liyong Chen , Youjun Liu , Jiang Wu
IPC分类号： G06F17/24
CPC分类号： G06F17/3002 , G06F17/242 , G06F17/30056
摘要： Methods and apparatuses that synchronize a paper document to an associated digital document by establishing a mapping. An embedded interactive code (EIC) Document is created as a digital file that serves as an intermediate tier between the paper document and the digital document. Both the paper document and the EIC document are generated while printing the paper document. The EIC document records the corresponding EIC array allocations and a unique document identification number. An image capturing pen may generate a stroke on any page of paper document. With the EIC document, the methods and apparatuses inform an application the page and location on the page of the stroke.

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