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公开(公告)号:US20070041654A1
公开(公告)日:2007-02-22
申请号:US11205448
申请日:2005-08-17
申请人: Jian Wang , Yingnong Dang , Qiang Wang , Chunhui Zhang
发明人: Jian Wang , Yingnong Dang , Qiang Wang , Chunhui Zhang
IPC分类号: G06K9/40
CPC分类号: G06K9/22 , G06K2009/226
摘要: At least one image captured from a printed document and at least one image captured from a display surface other than a printed document are processed. A surface-type-identification module accepts as input both types of images and identifies, for a particular image, the type of surface from which the image was captured. A display-surface-preprocessing module preprocesses the at least one embedded-interaction-code image captured from a display surface other than a printed document. A printed-document-preprocessing module preprocesses the at least one embedded-interaction-code images captured from a printed document. An embedded-interaction-code-processing module outputs location information for at least one of the at least one image captured from a printed document and the at least one image captured from a display surface other than a printed document.
摘要翻译: 处理从打印文档捕获的至少一个图像和从打印文档以外的显示表面捕获的至少一个图像。 表面类型识别模块接受两种类型的图像作为输入,并且针对特定图像识别捕获图像的表面的类型。 显示表面预处理模块预处理从打印文档以外的显示表面捕获的至少一个嵌入式交互代码图像。 打印文档预处理模块预处理从打印文档捕获的至少一个嵌入式交互代码图像。 嵌入式交互代码处理模块输出从打印文档捕获的至少一个图像中的至少一个图像和从打印文档以外的显示表面捕获的至少一个图像的位置信息。
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公开(公告)号:US20070003150A1
公开(公告)日:2007-01-04
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: G06K9/36
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。
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公开(公告)号:US07486822B2
公开(公告)日:2009-02-03
申请号:US11618277
申请日:2006-12-29
申请人: Jian Wang , Qiang Wang , Chunhui Zhang , Yue Li
发明人: Jian Wang , Qiang Wang , Chunhui Zhang , Yue Li
CPC分类号: G06K9/228 , G06F3/0321 , G06F3/03545 , G06K19/06037
摘要: A system and method is described for providing an encoding scheme for a bit stream and displaying or printing the encoded bit stream. Using the encoded bit stream, a pen with a camera may capture an image of a portion of the encoded bit stream. The captured image may then be decoded to provide an indication of the location of the image in relation to the encoded bit stream. The encoding scheme includes information regarding orientation, thus making decoding easier.
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公开(公告)号:US20070104371A1
公开(公告)日:2007-05-10
申请号:US11618277
申请日:2006-12-29
申请人: Jian Wang , Qiang Wang , Chunhui Zhang , Yue Li
发明人: Jian Wang , Qiang Wang , Chunhui Zhang , Yue Li
IPC分类号: G06K9/18
CPC分类号: G06K9/228 , G06F3/0321 , G06F3/03545 , G06K19/06037
摘要: A system and method is described for providing an encoding scheme for a bit stream and displaying or printing the encoded bit stream. Using the encoded bit stream, a pen with a camera may capture an image of a portion of the encoded bit stream. The captured image may then be decoded to provide an indication of the location of the image in relation to the encoded bit stream. The encoding scheme includes information regarding orientation, thus making decoding easier.
摘要翻译: 描述了一种用于提供比特流的编码方案并显示或打印编码比特流的系统和方法。 使用编码比特流,具有相机的笔可以捕获编码比特流的一部分的图像。 然后可以对所捕获的图像进行解码,以提供关于编码比特流的图像的位置的指示。 编码方案包括关于取向的信息,从而使解码更容易。
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公开(公告)号:US07502507B2
公开(公告)日:2009-03-10
申请号:US10284412
申请日:2002-10-31
申请人: Jian Wang , Qiang Wang , Chunhui Zhang , Yue Li
发明人: Jian Wang , Qiang Wang , Chunhui Zhang , Yue Li
CPC分类号: G06K9/228 , G06F3/0321 , G06F3/03545 , G06K19/06037
摘要: A system and method is described for providing an encoding scheme for a bit stream and displaying or printing the encoded bit stream. Using the encoded bit stream, a pen with a camera may capture an image of a portion of the encoded bit stream. The captured image may then be decoded to provide an indication of the location of the image in relation to the encoded bit stream. The encoding scheme includes information regarding orientation, thus making decoding easier.
摘要翻译: 描述了一种用于提供比特流的编码方案并显示或打印编码比特流的系统和方法。 使用编码比特流,具有相机的笔可以捕获编码比特流的一部分的图像。 然后可以对所捕获的图像进行解码,以提供关于编码比特流的图像的位置的指示。 编码方案包括关于取向的信息,从而使解码更容易。
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公开(公告)号:US20060165290A1
公开(公告)日:2006-07-27
申请号:US11385870
申请日:2006-03-22
申请人: Jian Wang , Qiang Wang , Chunhui Zhang , Yue Li
发明人: Jian Wang , Qiang Wang , Chunhui Zhang , Yue Li
IPC分类号: G06K9/18
CPC分类号: G06K9/228 , G06F3/0321 , G06F3/03545 , G06K19/06037
摘要: A system and method is described for providing an encoding scheme for a bit stream and displaying or printing the encoded bit stream. Using the encoded bit stream, a pen with a camera may capture an image of a portion of the encoded bit stream. The captured image may then be decoded to provide an indication of the location of the image in relation to the encoded bit stream. The encoding scheme includes information regarding orientation, thus making decoding easier.
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公开(公告)号:US07502508B2
公开(公告)日:2009-03-10
申请号:US11385870
申请日:2006-03-22
申请人: Jian Wang , Qiang Wang , Chunhui Zhang , Yue Li
发明人: Jian Wang , Qiang Wang , Chunhui Zhang , Yue Li
CPC分类号: G06K9/228 , G06F3/0321 , G06F3/03545 , G06K19/06037
摘要: A system and method is described for providing an encoding scheme for a bit stream and displaying or printing the encoded bit stream. Using the encoded bit stream, a pen with a camera may capture an image of a portion of the encoded bit stream. The captured image may then be decoded to provide an indication of the location of the image in relation to the encoded bit stream. The encoding scheme includes information regarding orientation, thus making decoding easier.
摘要翻译: 描述了一种用于提供比特流的编码方案并显示或打印编码比特流的系统和方法。 使用编码比特流,具有相机的笔可以捕获编码比特流的一部分的图像。 然后可以对所捕获的图像进行解码,以提供关于编码比特流的图像的位置的指示。 编码方案包括关于取向的信息,从而使解码更容易。
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公开(公告)号:US07486823B2
公开(公告)日:2009-02-03
申请号:US11618308
申请日:2006-12-29
申请人: Jian Wang , Qiang Wang , Chunhui Zhang , Yue Li
发明人: Jian Wang , Qiang Wang , Chunhui Zhang , Yue Li
CPC分类号: G06K9/228 , G06F3/0321 , G06F3/03545 , G06K19/06037
摘要: A system and method is described for providing an encoding scheme for a bit stream and displaying or printing the encoded bit stream. Using the encoded bit stream, a pen with a camera may capture an image of a portion of the encoded bit stream. The captured image may then be decoded to provide an indication of the location of the image in relation to the encoded bit stream. The encoding scheme includes information regarding orientation, thus making decoding easier.
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公开(公告)号:US20070104372A1
公开(公告)日:2007-05-10
申请号:US11618308
申请日:2006-12-29
申请人: Jian Wang , Qiang Wang , Chunhui Zhang , Yue Li
发明人: Jian Wang , Qiang Wang , Chunhui Zhang , Yue Li
IPC分类号: G06K9/18
CPC分类号: G06K9/228 , G06F3/0321 , G06F3/03545 , G06K19/06037
摘要: A system and method is described for providing an encoding scheme for a bit stream and displaying or printing the encoded bit stream. Using the encoded bit stream, a pen with a camera may capture an image of a portion of the encoded bit stream. The captured image may then be decoded to provide an indication of the location of the image in relation to the encoded bit stream. The encoding scheme includes information regarding orientation, thus making decoding easier.
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公开(公告)号:US20080059867A1
公开(公告)日:2008-03-06
申请号:US11468609
申请日:2006-08-30
申请人: Zhouchen Lin , Qiang Wang , Chunhui Zhang
发明人: Zhouchen Lin , Qiang Wang , Chunhui Zhang
IPC分类号: H03M13/00
CPC分类号: H03M13/13
摘要: The present decoding technique provides an efficient technique for decoding linear block codes from multiple encoders. When an error in a code sequence is detected, the decoding technique estimates a confidence for each bit within the code sequence. Based on the confidence, a subset of bits within the code sequence is obtained. The subset of bits is then incrementally flipped to determine a set of modified code sequences. A syndrome is computed for each of the modified code sequences based on a preceding computed syndrome and an update vector.
摘要翻译: 本解码技术提供了用于从多个编码器解码线性块码的有效技术。 当检测到代码序列中的错误时,解码技术估计代码序列内每个位的置信度。 基于置信度,获得码序列内的比特的子集。 然后逐位翻转位的子集以确定一组修改的代码序列。 基于先前计算的综合征和更新向量,为每个修改的码序列计算校正子。
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