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71. 发明申请

US20080063054A1 SYSTEM AND METHOD FOR THE DYNAMIC RESOLUTION CHANGE FOR VIDEO ENCODING 有权
标题翻译：用于视频编码的动态分辨率变化的系统和方法
公开(公告)号：US20080063054A1
公开(公告)日：2008-03-13
申请号：US11931512
申请日：2007-10-31
申请人： Krishna Ratakonda , Ashish Jagmohan
发明人： Krishna Ratakonda , Ashish Jagmohan
IPC分类号： H04B1/66
CPC分类号： H04N19/59 , H04N19/107 , H04N19/117 , H04N19/137 , H04N19/14 , H04N19/142 , H04N19/146 , H04N19/152 , H04N19/164
摘要： The present invention relates to a method, system and computer program product for the predictive encoding of digital video sequences. The objectives of the invention are accomplished by dynamically determining the resolution of a current frame being encoded and outputting the determination. The determination process is based on statistical and coding information of a plurality of frames, including at least one previous frame and the current frame. Further, general encoding parameters and the encoding parameters of a current frame at a chosen resolution are determined, wherein the encoding parameter selection step takes into account the determination of the dynamic resolution determination step in determining the encoding parameters.
摘要翻译：本发明涉及用于数字视频序列的预测编码的方法，系统和计算机程序产品。本发明的目的通过动态地确定正被编码的当前帧的分辨率并输出该确定来实现。确定处理基于包括至少一个先前帧和当前帧的多个帧的统计和编码信息。此外，确定所选分辨率下的当前帧的一般编码参数和编码参数，其中编码参数选择步骤在确定编码参数时考虑动态分辨率确定步骤的确定。

72. 发明授权

US07305031B2 Method and system for the error resilient transmission of predictively encoded signals 失效
标题翻译：用于预测编码信号的错误传播的方法和系统
公开(公告)号：US07305031B2
公开(公告)日：2007-12-04
申请号：US10767596
申请日：2004-01-29
申请人： Krishna C. Ratakonda , Ashish Jagmohan
发明人： Krishna C. Ratakonda , Ashish Jagmohan
IPC分类号： H04N7/12 , H04N11/02
CPC分类号： H04N19/39 , H04N19/37
摘要： A system for the introduction of controlled correlation among multiple redundant representations of predictively encoded signals while avoiding predictive mismatch at a receiver when any given sub-set of the multiple representations is received. The system embodies a signal encoder and decoder. The decoder can comprise at least two signal adders for respectively receiving coefficient values and adding at least one predictive value transform to the coefficient value in order to generate and transmit a second set of coefficient values. The second set of coefficient values is subsequently received by a decoder means, wherein the decoder means transforms the received coefficient values and transmits the resultant coefficient values to a signal adder. Upon reception of the transformed coefficient values, the signal adder generates a third set of coefficient values; the third set of coefficients being used to reconstruct an approximate version of an encoded signal.
摘要翻译：一种用于在预测编码信号的多个冗余表示之间引入受控相关性的系统，同时在接收到多个表示的任何给定子集时避免接收机处的预测失配。该系统体现了信号编码器和解码器。解码器可以包括用于分别接收系数值的至少两个信号加法器，并且将至少一个预测值变换加到系数值，以便产生和发送第二组系数值。第二组系数值随后由解码器装置接收，其中解码器装置变换接收到的系数值，并将所得到的系数值发送到信号加法器。在接收到变换的系数值时，信号加法器产生第三组系数值; 第三组系数用于重建编码信号的近似版本。

73. 发明申请

US20050249277A1 Method and apparatus to determine prediction modes to achieve fast video encoding 有权
标题翻译：确定预测模式以实现快速视频编码的方法和装置
公开(公告)号：US20050249277A1
公开(公告)日：2005-11-10
申请号：US10840403
申请日：2004-05-07
申请人： Krishna Ratakonda , Ashish Jagmohan
发明人： Krishna Ratakonda , Ashish Jagmohan
IPC分类号： H04N7/12 , H04N7/26 , H04N7/50
CPC分类号： H04N19/11 , H04N19/119 , H04N19/136 , H04N19/14 , H04N19/176 , H04N19/186 , H04N19/48 , H04N19/61
摘要： An improvement to a predictive video encoding method or apparatus that includes selecting a mode class within which to choose an encoding algorithm to encode individual blocks of video information. Rather than implementing each algorithm in each mode class to ascertain an acceptable compression, the improvement eliminates searching through a class of encoding modes based simply on heuristics. The method comprises obtaining statistical information related to previous blocks of encoded video information, determining a mode class within which to chose a particular encoding algorithm based on the statistical information (e.g., heuristics) gathered, choosing an algorithm within the selected mode class using conventional techniques, and encoding the video information according to the chosen algorithm. Statistical information may include quantization parameters, prior encoding decisions, intensity or frequency values, or Hadamard transform coefficients of previously encoded macroblocks. Encoding complexity in the coder is reduced since one class of encoding modes is eliminated.
摘要翻译：一种预测性视频编码方法或装置的改进，包括选择在其中选择编码算法来对各个视频信息块进行编码的模式类别。不是在每个模式类中实现每个算法以确定可接受的压缩，而是改进消除了仅仅通过启发式来搜索一类编码模式。该方法包括获得与先前编码视频信息块相关的统计信息，基于收集的统计信息（例如，启发式）确定选择特定编码算法的模式类别，使用常规技术选择所选模式类别内的算法，并根据所选择的算法对视频信息进行编码。统计信息可以包括量化参数，先前编码决定，强度或频率值，或先前编码的宏块的Hadamard变换系数。由于消除了一类编码模式，因此编码器中的编码复杂度降低。

74. 发明申请

US20050169387A1 Method and system for the error resilient transmission of predictively encoded signals 失效
标题翻译：用于预测编码信号的错误传播的方法和系统
公开(公告)号：US20050169387A1
公开(公告)日：2005-08-04
申请号：US10767596
申请日：2004-01-29
申请人： Krishna Ratakonda , Ashish Jagmohan
发明人： Krishna Ratakonda , Ashish Jagmohan
IPC分类号： H04N7/26 , H04B1/66
CPC分类号： H04N19/39 , H04N19/37
摘要： A system for the introduction of controlled correlation among multiple redundant representations of predictively encoded signals while avoiding predictive mismatch at a receiver when any given sub-set of the multiple representations is received. The system embodies a signal encoder and decoder. The decoder can comprise at least two signal adders for respectively receiving coefficient values and adding at least one predictive value transform to the coefficient value in order to generate and transmit a second set of coefficient values. The second set of coefficient values is subsequently received by a decoder means, wherein the decoder means transforms the received coefficient values and transmits the resultant coefficient values to a signal adder. Upon reception of the transformed coefficient values, the signal adder generates a third set of coefficient values; the third set of coefficients being used to reconstruct an approximate version of an encoded signal.
摘要翻译：一种用于在预测编码信号的多个冗余表示之间引入受控相关性的系统，同时在接收到多个表示的任何给定子集时避免接收机处的预测失配。该系统体现了信号编码器和解码器。解码器可以包括用于分别接收系数值的至少两个信号加法器，并且将至少一个预测值变换加到系数值，以便产生和发送第二组系数值。第二组系数值随后由解码器装置接收，其中解码器装置变换接收到的系数值，并将所得到的系数值发送到信号加法器。在接收到变换的系数值时，信号加法器产生第三组系数值; 第三组系数用于重建编码信号的近似版本。

75. 发明授权

US08934630B2 Compressing block-cipher encrypted data 有权
标题翻译：压缩块加密的加密数据
公开(公告)号：US08934630B2
公开(公告)日：2015-01-13
申请号：US12610754
申请日：2009-11-02
申请人： Camit Hazay , Ashish Jagmohan , Demijan Klinc , Hugo M. Krawczyk , Tal Rabin
发明人： Camit Hazay , Ashish Jagmohan , Demijan Klinc , Hugo M. Krawczyk , Tal Rabin
IPC分类号： H04K1/00 , H04N19/12 , H04L29/06 , H04L9/06
CPC分类号： H04L9/0637 , G06F2221/2107 , H04L9/0618 , H04L9/0819 , H04L9/32 , H04L63/0428 , H04L69/04 , H04L2209/24 , H04L2209/30
摘要： A method, system and computer program product are disclosed for compressing encrypted data, wherein the data is encrypted by using a block encryption algorithm in a chained mode of operation, and the encrypted data is comprised of a set of N encrypted blocks, C1 . . . CN. In one embodiment, the method comprises leaving block CN uncompressed, and compressing all of the blocks C1 . . . CN in a defined sequence using a Slepian-Wolf code. In an embodiment, the data is encrypted using an encryption key K, and the compressing includes compressing all of the blocks C1 . . . CN without using the encryption key. In one embodiment, the compressing includes outputting the blocks C1 . . . CN as a set of compressed blocks CmprC1 . . . CmprCN-1, and the method further comprises decrypting CN to generate a reconstructed block {tilde over (X)}n, and decrypting and decompressing the set of compressed blocks using {tilde over (X)}n.
摘要翻译：公开了一种用于压缩加密数据的方法，系统和计算机程序产品，其中通过使用链式操作模式中的块加密算法来加密数据，并且加密数据由一组N个加密块C1组成。。。 CN。在一个实施例中，该方法包括将块CN未压缩，并压缩所有块C1。。。 CN以定义的顺序使用Slepian-Wolf代码。在一个实施例中，使用加密密钥K对数据进行加密，并且压缩包括压缩所有块C1。。。 CN，而不使用加密密钥。在一个实施例中，压缩包括输出块C1。。。 CN作为一组压缩块CmprC1。。。 CmprCN-1，并且所述方法还包括解密CN以生成重构块{（t）），并且使用{tilde over（X）} n来解密和解压缩该组压缩块。

76. 发明授权

US08804837B2 Method and system for coding mode selection in video compression systems 有权
标题翻译：视频压缩系统中编码模式选择的方法和系统
公开(公告)号：US08804837B2
公开(公告)日：2014-08-12
申请号：US13545414
申请日：2012-07-10
申请人： Dake He , Ashish Jagmohan , Ligang Lu
发明人： Dake He , Ashish Jagmohan , Ligang Lu
IPC分类号： H04N11/02
CPC分类号： H04N19/395 , H04N19/103 , H04N19/18 , H04N19/48
摘要： A method and system are disclosed for selecting a mode to encode video data. The method comprises the steps of (a) transforming a source video frame into a set of coefficients, (b) partitioning said set of coefficients into a plurality of subsets of the coefficients on the basis of probability statistics corresponding to a plurality of encoding modes, wherein each of said subsets is identified for encoding by one of the plurality of encoding modes. The method comprises the further steps of (c) for each of the plurality of subsets of coefficients, computing defined parameters of an associated probability distribution for said subset, and (d) repeating steps (b) and (c) until a predetermined termination condition is satisfied. When this predetermined termination condition is satisfied, the subsets of coefficients, as they exist at that time, are output to a video encoder, which preferably is a Wyner-Ziv encoder.
摘要翻译：公开了一种用于选择对视频数据进行编码的模式的方法和系统。该方法包括以下步骤：（a）将源视频帧变换成一组系数，（b）基于对应于多个编码模式的概率统计，将所述系数集合划分成系数的多个子集，其中所述子集中的每一个被识别用于通过所述多个编码模式之一进行编码。该方法还包括以下步骤：（c）针对所述多个系数子集中的每一个，计算所述子集的关联概率分布的定义参数，以及（d）重复步骤（b）和（c）直到预定终止条件满意当满足该预定终止条件时，如同在那时存在的系数子集被输出到视频编码器，其优选地是Wyner-Ziv编码器。

77. 发明授权

US08428119B2 Method and apparatus for multi-hypothesis decoder side-information coding 有权
标题翻译：用于多假设解码器侧信息编码的方法和装置
公开(公告)号：US08428119B2
公开(公告)日：2013-04-23
申请号：US11623591
申请日：2007-01-16
申请人： Ashish Jagmohan , Anshul Seghal
发明人： Ashish Jagmohan , Anshul Seghal
IPC分类号： H04N7/12 , H04B1/66
CPC分类号： H03M7/30
摘要： A computer-implemented method for decompression in data compression systems with decoder side-information including a plurality of signals each of which is correlated to a source, includes determining a conditional probability function of the source conditioned upon a subset of decoder side-information signals, wherein the decoder side-information signals include pre-stored and received statistical information, estimating an a-posteriori probability function based on the conditional probability function and extrinsic information, evaluating a stopping criterion for decompression, generating the extrinsic information based on the a-posteriori probability function, and determining a likelihood threshold for determining a most probable value of a quantized source signal based on the a-posteriori probability function and outputting the quantized source upon determining to stop decompression.
摘要翻译：一种用于数据压缩系统中解压缩的计算机实现方法，其中解码器侧信息包括与源相关的多个信号，包括：确定源于解码器侧信息信号子集的源的条件概率函数，其中所述解码器侧信息信号包括预存储和接收的统计信息，基于所述条件概率函数和外在信息估计后验概率函数，评估解压缩停止标准，基于所述后验信息生成所述外在信息概率函数，以及基于所述后验概率函数确定用于确定量化源信号的最可能值的似然阈值，并且在确定停止解压缩时输出所述量化源。

78. 发明授权

US08111755B2 Method and system for low-complexity Slepian-Wolf rate estimation in Wyner-Ziv video encoding 失效
标题翻译： Wyner-Ziv视频编码中低复杂度Slepian-Wolf速率估计的方法和系统
公开(公告)号：US08111755B2
公开(公告)日：2012-02-07
申请号：US12145920
申请日：2008-06-25
申请人： Dake He , Ashish Jagmohan
发明人： Dake He , Ashish Jagmohan
IPC分类号： H04N7/12
CPC分类号： H04N19/395 , H04N19/513 , H04N19/537 , H04N19/59 , H04N19/80
摘要： A method and system for low-complexity Slepian-Wolf rate estimator in a hybrid Wyner-Ziv video encoder determines the minimum Slepian-Wolf code rate required to allow correct decoding. The Slepian-Wolf estimator does not assume ideality of source and side-information statistics and does not require the presence of a feedback channel from the decoder to the encoder in order to determine the correct Slepian-Wolf coding rate. Instead, it adapts to the statistical properties of the video steam. The Slepian-Wolf estimator provides very efficient compression performance while avoiding Slepian-Wolf decoding failures.
摘要翻译：混合Wyner-Ziv视频编码器中的低复杂度Slepian-Wolf速率估计器的方法和系统确定了允许正确解码所需的最小Slepian-Wolf码率。 Slepian-Wolf估计器不假定源和侧信息统计的理想，并且不需要存在从解码器到编码器的反馈信道，以便确定正确的Slepian-Wolf编码率。相反，它适应视频流的统计特性。 Slepian-Wolf估计器提供非常有效的压缩性能，同时避免Slepian-Wolf解码失败。

79. 发明申请

US20110187565A1 EFFICIENT RATELESS DISTRIBUTED COMPRESSION OF NON-BINARY SOURCES 有权
标题翻译：高效无偿地分配非二进制源的压缩
公开(公告)号：US20110187565A1
公开(公告)日：2011-08-04
申请号：US12699592
申请日：2010-02-03
申请人： Ashish Jagmohan , Demijan Klinc
发明人： Ashish Jagmohan , Demijan Klinc
IPC分类号： H03M5/02 , H03M7/00
CPC分类号： H03M7/30 , H03M13/1102 , H03M13/1111 , H03M13/6362
摘要： A method, system and computer program product are disclosed for rateless compression of non-binary sources. In one embodiment, the method comprises representing a sequence of non-binary source symbols as a sequence of sets of binary values; selecting a code for compressing the sets of binary values; determining a puncturing pattern, based on the selected code; and puncturing the sets of binary values, in patterns based on the puncturing pattern, to form a sequence of unpunctured values. A sequence of computed syndromes is determined based on the sequence of non-binary source symbols; and the sequence of unpunctured values and the sequence of computed syndromes are combined to form an output stream of data representing said sequence of non-binary source symbols. In one embodiment, none of the sets of binary values is punctured completely, and, for example, each of the sets of binary values may be punctured only partially.
摘要翻译：公开了用于非二进制源的无压缩压缩的方法，系统和计算机程序产品。在一个实施例中，该方法包括将非二进制源符号序列表示为二进制值集合的序列; 选择用于压缩二进制值集合的代码; 基于所选择的代码确定删截图案; 以及基于所述删截图案在模式中对所述二进制值集进行穿孔，以形成未穿刺值的序列。基于非二进制源符号的序列确定计算的综合征序列; 并且将未穿刺值的序列和计算的综合征的序列组合以形成表示所述非二进制源符号序列的数据的输出流。在一个实施例中，没有完全对穿透的二进制值集合进行穿孔，并且例如，可以仅部分地对穿孔的二进制值中的每一组进行穿孔。

80. 发明授权

US07990290B1 Efficient rateless distributed compression of non-binary sources 有权
标题翻译：非二进制源的高效无量纲分布式压缩
公开(公告)号：US07990290B1
公开(公告)日：2011-08-02
申请号：US12699592
申请日：2010-02-03
申请人： Ashish Jagmohan , Demijan Klinc
发明人： Ashish Jagmohan , Demijan Klinc
IPC分类号： H03M7/00
CPC分类号： H03M7/30 , H03M13/1102 , H03M13/1111 , H03M13/6362
摘要： A method, system and computer program product are disclosed for rateless compression of non-binary sources. In one embodiment, the method comprises representing a sequence of non-binary source symbols as a sequence of sets of binary values; selecting a code for compressing the sets of binary values; determining a puncturing pattern, based on the selected code; and puncturing the sets of binary values, in patterns based on the puncturing pattern, to form a sequence of unpunctured values. A sequence of computed syndromes is determined based on the sequence of non-binary source symbols; and the sequence of unpunctured values and the sequence of computed syndromes are combined to form an output stream of data representing said sequence of non-binary source symbols. In one embodiment, none of the sets of binary values is punctured completely, and, for example, each of the sets of binary values may be punctured only partially.
摘要翻译：公开了用于非二进制源的无压缩压缩的方法，系统和计算机程序产品。在一个实施例中，该方法包括将非二进制源符号序列表示为二进制值集合的序列; 选择用于压缩二进制值集合的代码; 基于所选择的代码确定删截图案; 以及基于所述删截图案在模式中对所述二进制值集进行穿孔，以形成未穿刺值的序列。基于非二进制源符号的序列确定计算的综合征序列; 并且将未穿刺值的序列和计算的综合征的序列组合以形成表示所述非二进制源符号序列的数据的输出流。在一个实施例中，没有完全对穿透的二进制值集合进行穿孔，并且例如，可以仅部分地对穿孔的二进制值中的每一组进行穿孔。

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