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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。
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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。
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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
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.
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公开(公告)号：US08064697B2
公开(公告)日：2011-11-22
申请号：US11871764
申请日：2007-10-12
申请人： Deli Zhao , Zhouchen Lin , Xiaoou Tang
发明人： Deli Zhao , Zhouchen Lin , Xiaoou Tang
CPC分类号： G06K9/6248
摘要： Systems and methods perform Laplacian Principal Components Analysis (LPCA). In one implementation, an exemplary system receives multidimensional data and reduces dimensionality of the data by locally optimizing a scatter of each local sample of the data. The optimization includes summing weighted distances between low dimensional representations of the data and a mean. The weights of the distances can be determined by a coding length of each local data sample. The system can globally align the locally optimized weighted scatters of the local samples and provide a global projection matrix. The LPCA improves performance of such applications as face recognition and manifold learning.
摘要翻译： 系统和方法执行拉普拉斯主成分分析（LPCA）。 在一个实现中，示例性系统通过局部优化数据的每个局部采样的散射来接收多维数据并且降低数据的维度。 优化包括对数据的低维表示和平均值之间的加权距离求和。 距离的权重可以通过每个本地数据样本的编码长度来确定。 该系统可以对局部采样的局部优化加权散射进行全局对齐，并提供全局投影矩阵。 LPCA可以改善诸如面部识别和歧管学习等应用的性能。
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公开(公告)号：US07692647B2
公开(公告)日：2010-04-06
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
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。
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公开(公告)号：US20100076723A1
公开(公告)日：2010-03-25
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
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。
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公开(公告)号：US07609271B2
公开(公告)日：2009-10-27
申请号：US11428195
申请日：2006-06-30
申请人： Zhouchen Lin , Lifeng Wang , Yunbo Wang , Jian Wang , Xiaoou Tang
发明人： Zhouchen Lin , Lifeng Wang , Yunbo Wang , Jian Wang , Xiaoou Tang
IPC分类号： G06T13/00
CPC分类号： G06T13/80 , G09G5/00 , G09G2340/0414 , G09G2340/0421
摘要： A strategy is described for producing an animated scene from multiple high resolution still images. The strategy involves: creating a graph based on an analysis of similarity among the plural still images; performing partial temporal order recovery to define a partial ordering among the plural still images; and extracting an output sequence from the plural still images using second-order Markov Chain analysis, using the partial ordering as a reference. The strategy can perform the above-described analysis with respect to multiple independent animated regions (IARs) within the still images. Further, the strategy can decompose any IAR with a significant amount of motion into multiple semi-independent animated regions (SIARs). The SIARs are defined to be weakly interdependent.
摘要翻译： 描述了从多个高分辨率静止图像生成动画场景的策略。 该策略涉及：基于对多个静止图像之间的相似性的分析来创建图; 执行部分时间顺序恢复以限定所述多个静止图像中的部分排序; 以及使用部分排序作为参考，使用二阶马尔可夫链分析从多个静止图像中提取输出序列。 该策略可以针对静止图像内的多个独立动画区域（IAR）执行上述分析。 此外，该策略可以将具有大量运动的任何IAR分解成多个半独立动画区域（SIAR）。 SIAR被定义为弱相互依赖。
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18.发明授权公开(公告)号：US07505606B2
公开(公告)日：2009-03-17
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： G06K9/00
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.
摘要翻译： 本发明的实施例确定图像是否已被改变。 在图像中选择一组补丁，并将相应的反应函数提供给支持向量机（SVM）。 支持向量机用示例性正常和异常的反应函数进行训练。 训练后，支持向量机分析与疑似图像相对应的反应响应函数。 支持向量机通过分析一组特征来确定逆响应函数是正常还是异常。 在一个实施例中，特征包括用于元组的红，绿和蓝分量的单调特性，波动特性和发散特性的度量。 反向响应函数的每个元组与在图像中选择的一组补丁相关联。
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公开(公告)号：US20080001950A1
公开(公告)日：2008-01-03
申请号：US11428195
申请日：2006-06-30
申请人： Zhouchen Lin , Lifeng Wang , Yunbo Wang , Jian Wang , Xiaoou Tang
发明人： Zhouchen Lin , Lifeng Wang , Yunbo Wang , Jian Wang , Xiaoou Tang
IPC分类号： G06T13/00
CPC分类号： G06T13/80 , G09G5/00 , G09G2340/0414 , G09G2340/0421
摘要： A strategy is described for producing an animated scene from multiple high resolution still images. The strategy involves: creating a graph based on an analysis of similarity among the plural still images; performing partial temporal order recovery to define a partial ordering among the plural still images; and extracting an output sequence from the plural still images using second-order Markov Chain analysis, using the partial ordering as a reference. The strategy can perform the above-described analysis with respect to multiple independent animated regions (IARs) within the still images. Further, the strategy can decompose any IAR with a significant amount of motion into multiple semi-independent animated regions (SIARs). The SIARs are defined to be weakly interdependent.
摘要翻译： 描述了从多个高分辨率静止图像生成动画场景的策略。 该策略涉及：基于对多个静止图像之间的相似性的分析来创建图; 执行部分时间顺序恢复以限定所述多个静止图像中的部分排序; 以及使用部分排序作为参考，使用二阶马尔可夫链分析从多个静止图像中提取输出序列。 该策略可以针对静止图像内的多个独立动画区域（IAR）执行上述分析。 此外，该策略可以将具有大量运动的任何IAR分解成多个半独立动画区域（SIAR）。 SIAR被定义为弱相互依赖。
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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。
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