公开(公告)号：US20070195106A1

公开(公告)日：2007-08-23

申请号：US11276204

申请日：2006-02-17

申请人： Zhouchen Lin ,  Junfeng He ,  Xiaoou Tang

发明人： Zhouchen Lin ,  Junfeng He ,  Xiaoou Tang

IPC分类号： G09G5/02

CPC分类号： G06T1/0042 ,  G06T2201/0052 ,  H04N19/60 ,  H04N19/86

摘要： Systems and methods for detecting doctored JPEG images are described. In one aspect, a JPEG image is evaluated to determine if the JPEG image comprises double quantization effects of double quantized Discrete Cosine Transform coefficients. In response to results of these evaluation operations, the systems and methods determine whether the JPEG image has been doctored and identify any doctored portion.

摘要翻译： 描述用于检测编码的JPEG图像的系统和方法。 在一个方面，评估JPEG图像以确定JPEG图像是否包括双量化离散余弦变换系数的双量化效应。 响应于这些评估操作的结果，系统和方法确定JPEG图像是否被编辑并识别任何编辑部分。

公开(公告)号：US20070183664A1

公开(公告)日：2007-08-09

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： G06K9/34 ,  G06K9/18

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：US20070025618A1

公开(公告)日：2007-02-01

申请号：US11195580

申请日：2005-08-01

申请人： Zhouchen Lin

发明人： Zhouchen Lin

IPC分类号： G06K9/18

CPC分类号： G06K9/00416

摘要： A method and system for cleaning handwriting for redisplay of the handwriting or for improved recognition accuracy is provided. The cleanup system receives handwriting that has been digitized. The cleanup system then analyzes the handwriting to identify strokes that satisfy a cleanup criterion. When a stroke has been identified as satisfying some cleanup criteria, the cleanup system cleans up the handwriting based on the detected criteria. In this way, the cleanup system generates handwriting that may have a more visually pleasing appearance to the reader.

摘要翻译： 提供了一种用于清除笔迹以重新显示笔迹或提高识别精度的方法和系统。 清理系统接收已经数字化的手写。 清理系统然后分析笔迹以识别满足清理标准的笔画。 当中风被确定为满足一些清理标准时，清理系统将根据检测到的标准清除手写。 以这种方式，清理系统产生可能对读者更加视觉上令人满意的外观的手写。

公开(公告)号：US20050193292A1

公开(公告)日：2005-09-01

申请号：US10752109

申请日：2004-01-06

申请人： Zhouchen Lin ,  Yue Li ,  Xiaoxu Ma ,  Jian Wang ,  Qiang Wang

发明人： Zhouchen Lin ,  Yue Li ,  Xiaoxu Ma ,  Jian Wang ,  Qiang Wang

IPC分类号： G06F3/041 ,  G06F3/03 ,  G06F3/033 ,  G06F3/042 ,  G06K19/06 ,  G06T1/00 ,  G06T7/40 ,  G11C29/00

CPC分类号： G06F3/03545 ,  G06F3/0321

摘要： A process and apparatus for determining the location of a captured array from a larger image is described. A non-repeating sequence may be folded into a non-repeating array in which the array is unique for every neighboring window of a given size. A portion of the array of the neighboring window may be captured and a subset of extracted bits corresponding to the captured array is decoded to identify error bits. The location of the captured array is determined within the non-repeating array by further processing the decoded bits.

摘要翻译： 描述了用于从较大图像确定捕获的阵列的位置的处理和装置。 非重复序列可以折叠成非重复阵列，其中阵列对于给定大小的每个相邻窗口是唯一的。 可以捕获相邻窗口的阵列的一部分，并且对与所捕获的阵列相对应的提取的比特的子集进行解码以识别错误比特。 通过进一步处理解码的比特，在非重复阵列内确定所捕获的阵列的位置。

公开(公告)号：US09268757B2

公开(公告)日：2016-02-23

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： G06F17/00 ,  G06F17/24

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。

公开(公告)号：US08774558B2

公开(公告)日：2014-07-08

申请号：US13310730

申请日：2011-12-03

申请人： Xin Zhang ,  Zhengdong Zhang ,  Xiao Liang ,  Zhouchen Lin ,  Yi Ma

发明人： Xin Zhang ,  Zhengdong Zhang ,  Xiao Liang ,  Zhouchen Lin ,  Yi Ma

IPC分类号： G06K9/36 ,  G06K9/32

CPC分类号： G06K9/3275 ,  G06K9/6249 ,  G06K2209/01

摘要： A “Text Rectifier” provides various techniques for processing selected regions of an image containing text or characters by treating those images as matrices of low-rank textures and using a rank minimization technique that recovers and removes image deformations (e.g., affine and projective transforms as well as general classes of nonlinear transforms) while rectifying the text or characters in the image region. Once distortions have been removed and the text or characters rectified, the resulting text is made available for a variety of uses or further processing such as optical character recognition (OCR). In various embodiments, binarization and/or inversion techniques are applied to the selected image regions during the rank minimization process to both improve text rectification and to present the resulting images of text to an OCR engine in a form that enhances the accuracy of the OCR results.

摘要翻译： “文本整流器”提供了通过将这些图像作为低阶纹理矩阵来处理包含文本或字符的图像的所选区域的各种技术，并且使用恢复和去除图像变形的秩最小化技术（例如，仿射和投影变换为 以及非线性变换的一般类），同时整理图像区域中的文本或字符。 一旦失真被消除并且文本或者字符被纠正，所得到的文本可用于各种用途或进一步的处理，例如光学字符识别（OCR）。 在各种实施例中，在秩最小化处理期间将二值化和/或反转技术应用于所选择的图像区域，以改善文本校正，并以提高OCR结果的准确性的形式向OCR引擎呈现文本的所得图像 。

公开(公告)号：US20120134588A1

公开(公告)日：2012-05-31

申请号：US13310730

申请日：2011-12-03

申请人： Xin Zhang ,  Zhengdong Zhang ,  Xiao Liang ,  Zhouchen Lin ,  Yi Ma

发明人： Xin Zhang ,  Zhengdong Zhang ,  Xiao Liang ,  Zhouchen Lin ,  Yi Ma

IPC分类号： G06K9/34

CPC分类号： G06K9/3275 ,  G06K9/6249 ,  G06K2209/01

摘要： A “Text Rectifier” provides various techniques for processing selected regions of an image containing text or characters by treating those images as matrices of low-rank textures and using a rank minimization technique that recovers and removes image deformations (e.g., affine and projective transforms as well as general classes of nonlinear transforms) while rectifying the text or characters in the image region. Once distortions have been removed and the text or characters rectified, the resulting text is made available for a variety of uses or further processing such as optical character recognition (OCR). In various embodiments, binarization and/or inversion techniques are applied to the selected image regions during the rank minimization process to both improve text rectification and to present the resulting images of text to an OCR engine in a form that enhances the accuracy of the OCR results.

摘要翻译： “文本整流器”提供了通过将这些图像作为低阶纹理矩阵来处理包含文本或字符的图像的选定区域的各种技术，并且使用恢复和去除图像变形的秩最小化技术（例如，仿射和投影变换为 以及非线性变换的一般类），同时整理图像区域中的文本或字符。 一旦失真被消除并且文本或者字符被纠正，则所得到的文本可用于各种用途或进一步的处理，例如光学字符识别（OCR）。 在各种实施例中，在秩最小化处理期间将二值化和/或反转技术应用于所选择的图像区域，以改善文本校正，并以提高OCR结果的准确性的形式向OCR引擎呈现文本的所得图像 。

公开(公告)号：US08181103B2

公开(公告)日：2012-05-15

申请号：US11275398

申请日：2005-12-29

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： G06F17/242

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。

公开(公告)号：US20110304745A1

公开(公告)日：2011-12-15

申请号：US12797859

申请日：2010-06-10

申请人： Jiaping Wang ,  Yue Dong ,  Zhouchen Lin ,  Xin Tong ,  Baining Guo

发明人： Jiaping Wang ,  Yue Dong ,  Zhouchen Lin ,  Xin Tong ,  Baining Guo

IPC分类号： H04N5/235 ,  G06K9/40

CPC分类号： G06T15/50

摘要： A “Scene Re-Lighter” provides various techniques for using an automatically reconstructed light transport matrix derived from a sparse sampling of images to provide various combinations of complex light transport effects in images, including caustics, complex occlusions, inter-reflections, subsurface scattering, etc. More specifically, the Scene Re-Lighter reconstructs the light transport matrix from a relatively small number of acquired images using a “Kernel Nyström” based technique adapted for low rank matrices constructed from sparsely sampled images. A “light transport kernel” is incorporated into the Nyström method to exploit nonlinear coherence in the light transport matrix. Further, an adaptive process is used to efficiently capture the sparsely sampled images from a scene. The Scene Re-Lighter is capable of achieving good reconstruction of the light transport matrix with only few hundred images to produce high quality relighting results. Further, the Scene Re-Lighter is also effective for modeling scenes with complex lighting effects and occlusions.

摘要翻译： “场景再打火机”提供了各种技术，用于使用从图像的稀疏采样导出的自动重建的光传输矩阵，以提供图像中复杂光传输效应的各种组合，包括焦散，复杂遮挡，相互反射，地下散射， 等等。更具体地，场景重新点亮器使用适用于由稀疏采样图像构成的低秩矩阵的基于“内核Nyström”的技术，从相对较少数量的获取图像重构光传输矩阵。 将“光传输核”纳入Nyström方法以利用光传输矩阵中的非线性相干性。 此外，使用自适应处理来有效地从场景捕获稀疏采样的图像。 场景重新打火机能够通过仅仅几百张图像实现光传输矩阵的良好重建，从而产生高品质的重视效果。 此外，场景重新打火机对于对具有复杂的照明效果和遮挡的场景进行建模也是有效的。

公开(公告)号：US08024152B2

公开(公告)日：2011-09-20

申请号：US12235927

申请日：2008-09-23

申请人： Wei Zhang ,  Zhouchen Lin ,  Xiaoou Tang

发明人： Wei Zhang ,  Zhouchen Lin ,  Xiaoou Tang

IPC分类号： G06F17/16 ,  G06F17/11

CPC分类号： G06F17/30598 ,  G06K9/6234

摘要： Tensor linear Laplacian discrimination for feature extraction is disclosed. One embodiment comprises generating a contextual distance based sample weight and class weight, calculating a within-class scatter using the at least one sample weight and a between-class scatter for multiple classes of data samples in a sample set using the class weight, performing a mode-k matrix unfolding on scatters and generating at least one orthogonal projection matrix.

摘要翻译： 公开了用于特征提取的张量线性拉普拉斯判别。 一个实施例包括生成基于上下文距离的样本权重和类权重，使用所述至少一个样本权重来计算类内散度，以及使用类权重在样本集合中的多类数据样本之间进行类间散射，执行 mode-k矩阵在散射上展开并生成至少一个正交投影矩阵。