公开(公告)号：US20090001165A1

公开(公告)日：2009-01-01

申请号：US11772069

申请日：2007-06-29

申请人： Chunhui Zhang ,  Zhouchen Lin ,  Zhengyou Zhang ,  Shi Han

发明人： Chunhui Zhang ,  Zhouchen Lin ,  Zhengyou Zhang ,  Shi Han

IPC分类号： G06K7/10

CPC分类号： G06K7/1093 ,  G06T3/608 ,  G06T2207/20061

摘要： Systems and methods for 2-D barcode recognition are described. In one aspect, the systems and methods use a charge coupled camera capturing device to capture a digital image of a 3-D scene. The systems and methods evaluate the digital image to localize and segment a 2-D barcode from the digital image of the 3-D scene. The 2-D barcode is rectified to remove non-uniform lighting and correct any perspective distortion. The rectified 2-D barcode is divided into multiple uniform cells to generate a 2-D matrix array of symbols. A barcode processing application evaluates the 2-D matrix array of symbols to present data to the user.

摘要翻译： 描述了用于二维条形码识别的系统和方法。 在一个方面，所述系统和方法使用电荷耦合的摄像机捕捉设备来捕获3-D场景的数字图像。 系统和方法评估数字图像，以从3-D场景的数字图像中定位和分割二维条形码。 二维条形码整流，以消除不均匀的照明并纠正任何透视失真。 经整流的二维条形码被分成多个均匀的单元格，以产生符号的二维矩阵阵列。 条形码处理应用程序评估符号的二维矩阵数组以向用户呈现数据。

公开(公告)号：US07439989B2

公开(公告)日：2008-10-21

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： G06T15/00

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：US20080068386A1

公开(公告)日：2008-03-20

申请号：US11532052

申请日：2006-09-14

申请人： Zhouchen Lin ,  Lifeng Wang ,  Tian Fang ,  Xu Yang ,  Xuan Yu ,  Jian Wang ,  Xiaoou Tang

发明人： Zhouchen Lin ,  Lifeng Wang ,  Tian Fang ,  Xu Yang ,  Xuan Yu ,  Jian Wang ,  Xiaoou Tang

IPC分类号： G06T13/00

CPC分类号： G06T13/60 ,  G06T2210/56

摘要： Real-time rendering of realistic rain is described. In one aspect, image samples of real rain and associated information are automatically modeled in real-time to generate synthetic rain particles in view of respective scene radiances of target video content frames. The synthetic rain particles are rendered in real-time using pre-computed radiance transfer with uniform random distribution across respective frames of the target video content.

摘要翻译： 描述了实时降雨的实时渲染。 在一个方面，根据目标视频内容帧的相应场景辐射，实时地自动建模真实雨和相关信息的图像样本以产生合成雨粒子。 使用预先计算的辐射传输，通过目标视频内容的各个帧上的​​均匀随机分布实时地渲染合成雨粒子。

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。

公开(公告)号：US07324691B2

公开(公告)日：2008-01-29

申请号：US10850718

申请日：2004-05-20

申请人： Yantao Li ,  Zhouchen Lin ,  Xun Xu ,  Jian Wang

发明人： Yantao Li ,  Zhouchen Lin ,  Xun Xu ,  Jian Wang

IPC分类号： G06K9/00

CPC分类号： G06K9/00476 ,  G06K9/222

摘要： A system and method for shape recognition of hand-drawn objects is provided. A shape recognizer may recognize a drawing such as a diagram or chart from ink input by recognizing closed containers and/or unclosed connectors in the drawing. The closed containers may represent any number of shapes that may be recognized including circles, ellipses, triangles, quadrilaterals, pentagons, hexagons, and so forth. The unclosed connectors may be any type of connector including lines, curves, arrows, and so forth. Polylines may be used to approximate a skeleton of a connector for handling continuation strokes, overlapping strokes and over-tracing strokes of the skeleton. By using the present invention, a user may draw diagrams and flow charts freely and without restrictions on the hand-drawn input.

摘要翻译： 提供了一种用于手绘对象的形状识别的系统和方法。 形状识别器可以通过识别附图中的封闭容器和/或非封闭连接器来识别来自墨水输入的图形，例如图表或图表。 封闭的容器可以表示可以识别的任何数量的形状，包括圆形，椭圆形，三角形，四边形，五边形，六边形等。 未封闭的连接器可以是包括线，曲线，箭头等的任何类型的连接器。 折线可用于近似连接器的骨架，用于处理骨架的连续笔触，重叠笔触和超跟踪笔画。 通过使用本发明，用户可以自由地绘制图表和流程图，而不限制手绘输入。

公开(公告)号：US20070157076A1

公开(公告)日：2007-07-05

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：US20070154071A1

公开(公告)日：2007-07-05

申请号：US11321232

申请日：2005-12-29

申请人： Zhouchen Lin ,  Liang Wan ,  Bin Wan

发明人： Zhouchen Lin ,  Liang Wan ,  Bin Wan

IPC分类号： G06K9/00

CPC分类号： G06K9/00181

摘要： Methods and systems for training a computer to recognize and verify an individual's signature are provided. One illustrative method extracts a plurality of both global and local features from a relatively small sample of handwriting samples. In one such embodiment, only 5 samples are needed from an individual without requiring forgeries. In yet another embodiment, only three global parameters are utilized, thus reducing the complexity, and processing power, of the system. Utilizing such few global parameters also facilitates fine tuning of the systems. Further aspects of the invention relate to a multi-stage statistical system for on-line signature verification. In one embodiment, the system may comprise a simplified GMM model built on global signature properties and a left-to-right HMM model based on segmental features. In one embodiment, specific strategies are utilized to create model simplification and initialization in contrast to general GMM and HMM models.

摘要翻译： 提供了用于训练计算机以识别和验证个人签名的方法和系统。 一个说明性方法从相对较小的笔迹样本样本中提取多个全局和局部特征。 在一个这样的实施例中，仅需要5个样本，而不需要伪造。 在另一个实施例中，仅使用三个全局参数，从而降低系统的复杂性和处理能力。 利用这么少的全局参数也有助于系统的微调。 本发明的其它方面涉及用于在线签名验证的多阶段统计系统。 在一个实施例中，系统可以包括基于全局签名特性的简化GMM模型和基于段特征的从左到右HMM模型。 在一个实施例中，与通用GMM和HMM模型相反，具体策略被用于创建模型简化和初始化。

公开(公告)号：US20060262973A1

公开(公告)日：2006-11-23

申请号：US11132865

申请日：2005-05-19

申请人： Zhouchen Lin ,  Rongrong Wang ,  Xiaoou Tang ,  Heung-Yeung Shum

发明人： Zhouchen Lin ,  Rongrong Wang ,  Xiaoou Tang ,  Heung-Yeung Shum

IPC分类号： G06K9/62 ,  G06K9/00 ,  G06K15/00

CPC分类号： G06K9/00 ,  G06K9/00899

摘要： Embodiments of the invention determine whether an image has been altered. Sets of patches are selected in the image, and corresponding inverse response functions are provided to a support vector machine (SVM). The support vector machine is trained with exemplary normal and abnormal inverse response functions. Once trained, the support vector machine analyzes inverse response functions corresponding to a suspected image. The support vector machine determines if the inverse response functions are normal or abnormal by analyzing a set of features. In one embodiment, features include measures for monotonic characteristics, fluctuation characteristics, and divergence characteristics of the red, green, and blue components of a tuple. Each tuple of inverse response functions is associated with a set of patches selected in the image.

公开(公告)号：US20060242561A1

公开(公告)日：2006-10-26

申请号：US11112672

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： G06F17/00

CPC分类号： G06F17/242 ,  G06F3/0321 ,  G06F3/03545

摘要： In accordance with embodiments of the invention, global metadata, such as a document identifier, which may be a globally unique identifier, is embedded into an embedded interactive code document by combining a first m-array and a plurality of copies of the first m-array to generate a combined m-array with encoded global metadata such that respective start positions (xd,yd)i of the plurality of copies of the first m-array in the combined m-array are each shifted, by respective amounts that are based on respective portions of the global metadata, relative to a start position of the first m-array in the combined m-array. Global metadata may be decoded from the combined m-array by determining the respective amounts by which the plurality of copies of the first m-array are shifted, relative to the first m-array, in the combined m-array and by combining the respective amounts to produce a decoded value of the global metadata.

摘要翻译： 根据本发明的实施例，通过组合第一m阵列和第一m-阵列的多个副本，将嵌入式交互式代码文档中的全局元数据（诸如可以是全局唯一标识符的文档标识符）嵌入到嵌入式交互式代码文档中， 阵列以生成具有编码的全局元数据的组合的m阵列，使得多个的数组的相应起始位置（x，d，y，...） 组合的m阵列中的第一m阵列的副本相对于组合的m阵列中的第一m阵列的开始位置分别移位相应于全局元数据的相应部分的量。 可以通过确定在组合的m阵列中第一m阵列的多个副本相对于第一m阵列移位的相应量，并通过组合相应的数组来组合全局元数据 相当于产生全局元数据的解码值。

公开(公告)号：US20060170657A1

公开(公告)日：2006-08-03

申请号：US11045399

申请日：2005-01-28

申请人： Zhouchen Lin ,  Rongrong Wang ,  Jian Wang

发明人： Zhouchen Lin ,  Rongrong Wang ,  Jian Wang

IPC分类号： G09G5/00

CPC分类号： G06F3/0233 ,  G06F3/018

摘要： An input method and apparatus is provided for use in various computer and mobile devices. The input device utilizes a rotating dial in which four arrows printed on the dial are rotated to select characters that are fixed along the circumference of a circle. The characters are divided into various zones. The zones are utilized to encode various letters and numbers. Additionally the zones may be utilized for editing and control functions. The dial may be freely rotated. Pressing any arrow inputs the character that the arrow points to on the dial. The input device and method may encode Asian language characters according to a set of encoding rules.