公开(公告)号：US08316011B2

公开(公告)日：2012-11-20

申请号：US13173462

申请日：2011-06-30

申请人： Junfeng He ,  Regunathan Radhakrishnan ,  Wenyu Jiang

发明人： Junfeng He ,  Regunathan Radhakrishnan ,  Wenyu Jiang

IPC分类号： G06F7/00 ,  G06F17/30

CPC分类号： G06F17/30023

摘要： A value is computed for a feature in an instance of query content and compared to a threshold value. Based on the comparison, first and second bits in a hash value, which is derived from the query content feature, are determined. Conditional probability values are computed for the likelihood that quantized values of the first and the second bits equal corresponding quantized bit values of a target or reference feature value. The conditional probabilities are compared and a relative strength determined for the first and second bits, which directly corresponds to the conditional probability. The bit with the lowest bit strength is selected as the weakbit. The value of the weakbit is toggled to generate a variation of the query hash value. The query may be extended using the query hash value variation.

摘要翻译： 为查询内容的实例中的要素计算一个值，并与阈值进行比较。 基于比较，确定从查询内容特征导出的哈希值中的第一和第二比特。 对于第一和第二比特的量化值等于目标或参考特征值的相应量化比特值的可能性，计算条件概率值。 比较条件概率，并确定第一和第二位的相对强度，其直接对应于条件概率。 选择具有最低位强度的位作为弱位。 切换弱点的值以生成查询哈希值的变体。 可以使用查询哈希值变化来扩展查询。

公开(公告)号：US20120011128A1

公开(公告)日：2012-01-12

申请号：US13173462

申请日：2011-06-30

申请人： Junfeng He ,  Regunathan Radhakrishnan ,  Wenyu Jiang

发明人： Junfeng He ,  Regunathan Radhakrishnan ,  Wenyu Jiang

IPC分类号： G06F17/30

CPC分类号： G06F17/30023

摘要： A value is computed for a feature in an instance of query content and compared to a threshold value. Based on the comparison, first and second bits in a hash value, which is derived from the query content feature, are determined. Conditional probability values are computed for the likelihood that quantized values of the first and the second bits equal corresponding quantized bit values of a target or reference feature value. The conditional probabilities are compared and a relative strength determined for the first and second bits, which directly corresponds to the conditional probability. The bit with the lowest bit strength is selected as the weakbit. The value of the weakbit is toggled to generate a variation of the query hash value. The query may be extended using the query hash value variation.

摘要翻译： 为查询内容的实例中的要素计算一个值，并与阈值进行比较。 基于比较，确定从查询内容特征导出的哈希值中的第一和第二比特。 对于第一和第二比特的量化值等于目标或参考特征值的相应量化比特值的可能性，计算条件概率值。 比较条件概率，并确定第一和第二位的相对强度，其直接对应于条件概率。 选择具有最低位强度的位作为弱位。 切换弱点的值以生成查询哈希值的变体。 可以使用查询哈希值变化来扩展查询。

公开(公告)号：US08542869B2

公开(公告)日：2013-09-24

申请号：US13115542

申请日：2011-05-25

申请人： Junfeng He ,  Regunathan Radhakrishnan ,  Claus Bauer

发明人： Junfeng He ,  Regunathan Radhakrishnan ,  Claus Bauer

IPC分类号： G06K9/00

CPC分类号： G06K9/00744 ,  G06K9/6232

摘要： Multiple candidate feature components of media content or projection matrices (or other hash functions, e.g., non-linear projections) are identified. Each of the candidate projection matrices (or other hash functions) includes an array of coefficients that relate to the candidate features. A subgroup of the candidate features or the projection matrices (or other hash functions) are selected based at least partially on an optimized combination of at least two characteristics of the candidate features or projection matrices (or other hash functions). Media fingerprints that uniquely identify the media content are derived from the selected optimized subgroup. Optimal projection matrices (or other hash functions) may be designed. Performance or sensitivity (e.g., search time) characteristics of the fingerprints are thus balanced with robustness characteristics thereof.

摘要翻译： 识别媒体内容或投影矩阵（或其他散列函数，例如非线性投影）的多个候选特征分量。 每个候选投影矩阵（或其他散列函数）包括与候选特征相关的系数阵列。 至少部分地基于候选特征或投影矩阵（或其他散列函数）的至少两个特征的优化组合来选择候选特征或投影矩阵（或其他散列函数）的子组。 唯一标识媒体内容的媒体指纹是从选定的优化子组派生出来的。 可以设计最佳投影矩阵（或其他散列函数）。 因此，指纹的性能或灵敏度（例如，搜索时间）特性与其鲁棒性特性相平衡。

公开(公告)号：US20110299721A1

公开(公告)日：2011-12-08

申请号：US13115542

申请日：2011-05-25

申请人： Junfeng He ,  Regunathan Radhakrishnan ,  Claus Bauer

发明人： Junfeng He ,  Regunathan Radhakrishnan ,  Claus Bauer

IPC分类号： G06K9/00

CPC分类号： G06K9/00744 ,  G06K9/6232

摘要： Multiple candidate feature components of media content or projection matrices (or other hash functions, e.g., non-linear projections) are identified. Each of the candidate projection matrices (or other hash functions) includes an array of coefficients that relate to the candidate features. A subgroup of the candidate features or the projection matrices (or other hash functions) are selected based at least partially on an optimized combination of at least two characteristics of the candidate features or projection matrices (or other hash functions). Media fingerprints that uniquely identify the media content are derived from the selected optimized subgroup. Optimal projection matrices (or other hash functions) may be designed. Performance or sensitivity (e.g., search time) characteristics of the fingerprints are thus balanced with robustness characteristics thereof.

摘要翻译： 识别媒体内容或投影矩阵（或其他散列函数，例如非线性投影）的多个候选特征分量。 每个候选投影矩阵（或其他散列函数）包括与候选特征相关的系数阵列。 至少部分地基于候选特征或投影矩阵（或其他散列函数）的至少两个特征的优化组合来选择候选特征或投影矩阵（或其他散列函数）的子组。 唯一标识媒体内容的媒体指纹是从选定的优化子组派生出来的。 可以设计最佳投影矩阵（或其他散列函数）。 因此，指纹的性能或灵敏度（例如，搜索时间）特性与其鲁棒性特性相平衡。

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：US20070140565A1

公开(公告)日：2007-06-21

申请号：US11314124

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： G06K9/00449 ,  G06K9/00416

摘要： Computer-readable media having computer-executable instructions and apparatuses detect a table in a handwritten document. Line segments are derived from drawing strokes so that a bounding frame of a candidate table is obtained. An associated table structure is consequently recognized from the bounding frame, lines segments within the bounding frame, and their intersection points. A classifier that reflects at least one table characteristic is determined, and the candidate table is consequently validated or rejected.

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手写文档中的表。 线段从绘图笔画得到，从而获得候选表的边界帧。 因此，从边界框架，边界框架内的线段以及它们的交点可以识别相关联的表格结构。 确定反映至少一个表特征的分类器，并且因此候选表被验证或拒绝。

公开(公告)号：US07583841B2

公开(公告)日：2009-09-01

申请号：US11314124

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： G06K9/18

CPC分类号： G06K9/00449 ,  G06K9/00416

摘要： Computer-readable media having computer-executable instructions and apparatuses detect a table in a handwritten document. Line segments are derived from drawing strokes so that a bounding frame of a candidate table is obtained. An associated table structure is consequently recognized from the bounding frame, lines segments within the bounding frame, and their intersection points. A classifier that reflects at least one table characteristic is determined, and the candidate table is consequently validated or rejected.

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手写文档中的表。 线段从绘图笔画得到，从而获得候选表的边界帧。 因此，从边界框架，边界框架内的线段以及它们的交点可以识别相关联的表格结构。 确定反映至少一个表特征的分类器，并且因此候选表被验证或拒绝。

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：US20110160582A1

公开(公告)日：2011-06-30

申请号：US12990175

申请日：2009-04-28

申请人： Yongping Zheng ,  Xin Chen ,  James Chungwai Cheung ,  Junfeng He ,  Yanping Huang ,  Zhengming Huang

发明人： Yongping Zheng ,  Xin Chen ,  James Chungwai Cheung ,  Junfeng He ,  Yanping Huang ,  Zhengming Huang

IPC分类号： A61B8/00 ,  G01S15/00

CPC分类号： A61B8/00 ,  A61B8/42 ,  A61B8/4281 ,  A61B8/4455 ,  A61B8/4461 ,  A61B8/4472 ,  A61B8/54 ,  A61B8/56 ,  G01N29/2481

摘要： A wireless ultrasonic scanning system comprises an ultrasonic sensor, a motor, an ultrasonic transceiver, a high-speed data sampling module, a motor controller and a master control module. The ultrasonic sensor, which moves in accordance with control of the motor controller, is mounted on the motor. The ultrasonic transceiver activates the ultrasonic sensor and amplifies a received ultrasonic signal. The high-speed data sampling module wirelessly transmits radio-frequency ultrasonic data to the master control module. The master control module sets a scanning mode, initiates a scanning process, and wirelessly transmits control signals and control parameters to the high-speed data sampling module.

摘要翻译： 无线超声波扫描系统包括超声波传感器，电动机，超声波收发器，高速数据采样模块，电机控制器和主控模块。 根据电动机控制器的控制移动的超声波传感器安装在电动机上。 超声波收发器激活超声波传感器并放大接收到的超声波信号。 高速数据采样模块将射频超声波数据无线传输到主控模块。 主控模块设置扫描模式，启动扫描过程，并将控制信号和控制参数无线传输到高速数据采样模块。

公开(公告)号：US07664325B2

公开(公告)日：2010-02-16

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： G06K9/18

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。