公开(公告)号：US09451271B2

公开(公告)日：2016-09-20

申请号：US13187961

申请日：2011-07-21

申请人： Ying Liu ,  Dake He

发明人： Ying Liu ,  Dake He

IPC分类号： H04N7/26 ,  H04N19/17 ,  H04N19/46 ,  H04N19/117 ,  H04N19/136

CPC分类号： H04N19/17 ,  H04N19/117 ,  H04N19/136 ,  H04N19/46

摘要： Encoding video data that includes a frame includes: generating a reconstructed frame from compressed data for the frame, partitioning at least some pixels of the reconstructed frame into a plurality of segments of one or more pixels, based at least in part on pattern information for individual pixels, and generating respective filter information for each of one or more of the plurality of segments. Encoded video data is generated that includes the compressed data for the frame and the generated filter information.

摘要翻译： 对包括帧的视频数据进行编码包括：至少部分地基于用于个体的图案信息，从所述帧的压缩数据生成重建帧，将所述重构帧的至少一些像素划分为一个或多个像素的多个片段 并且为多个片段中的一个或多个片段中的每个片段的每一个片段生成相应的滤色器信息。 生成包括帧的压缩数据和生成的过滤器信息的编码视频数据。

公开(公告)号：US09294779B2

公开(公告)日：2016-03-22

申请号：US13524117

申请日：2012-06-15

申请人： Dake He ,  Jing Wang ,  Xiang Yu

发明人： Dake He ,  Jing Wang ,  Xiang Yu

IPC分类号： H04N7/18 ,  H04N19/467 ,  H04N19/463 ,  H04N19/91 ,  H04N19/48

CPC分类号： H04N19/18 ,  H04N19/184 ,  H04N19/44 ,  H04N19/463 ,  H04N19/467 ,  H04N19/48 ,  H04N19/91

摘要： Methods and devices for reconstructing coefficient levels from a bitstream of encoded video data for a coefficient group in a transform unit. Sign bits are hidden in the parity of partially overlapping subsets of a set of coefficients. This enables the hiding of multiple sign bits per coefficient group. Other information bits may be hidden instead of sign bits in some cases.

摘要翻译： 用于从变换单元中的系数组的编码视频数据的比特流重建系数级的方法和装置。 符号位隐藏在一组系数的部分重叠子集的奇偶校验中。 这使得能够隐藏每个系数组的多个符号位。 在某些情况下，其他信息位可能被隐藏而不是符号位。

公开(公告)号：US08804826B2

公开(公告)日：2014-08-12

申请号：US13085580

申请日：2011-04-13

申请人： Jinwen Zan ,  Dake He ,  En-hui Yang

发明人： Jinwen Zan ,  Dake He ,  En-hui Yang

IPC分类号： H04N7/50

CPC分类号： H04N19/105 ,  H04N19/117 ,  H04N19/154 ,  H04N19/17 ,  H04N19/82 ,  H04N19/86

摘要： Encoders and methods of encoding that incorporate deblocking into the encoding process. An encoder performs a two-cycle encoding process. First, an original block is processed and then reconstructed and deblocked. The reconstruction and the deblocked reconstruction are compared to the original and an intermediate block is created that contains the portions of the reconstruction or the deblocked reconstruction that are more similar to the original. In the second cycle, the intermediate block serves to generate a modified original block, which is then used in a prediction process to create a new prediction block. The new prediction block as compared to the original gives new residuals. The new prediction and new residuals are entropy coded to generate the encoded video data. The new prediction block and new residuals incorporate the deblocking elements selectively identified during the first cycle, thereby eliminating the need for deblocking at the decoder. The prediction operation may be motion prediction or spatial prediction.

摘要翻译： 编码器和编码方法，将解封锁结合到编码过程中。 编码器执行两周期编码处理。 首先，处理原始块，然后重建和解块。 将重建和解块重构与原始的重建进行比较，创建一个包含与原来更接近的重构或解块重构的部分的中间块。 在第二周期中，中间块用于产生经修改的原始块，然后将其用于预测过程以创建新的预测块。 与原来相比，新的预测块产生了新的残差。 新的预测和新的残差被熵编码以产生编码的视频数据。 新的预测块和新的残差包括在第一周期期间选择性地识别的去块元件，从而消除了在解码器处的解块的需要。 预测操作可以是运动预测或空间预测。

公开(公告)号：US08780972B2

公开(公告)日：2014-07-15

申请号：US13155616

申请日：2011-06-08

申请人： Dake He ,  Xiang Yu ,  Jing Wang ,  En-hui Yang

发明人： Dake He ,  Xiang Yu ,  Jing Wang ,  En-hui Yang

IPC分类号： H04N7/12 ,  H04N11/02 ,  H04N11/04 ,  H04N7/26 ,  H04N7/50

CPC分类号： H04N19/124 ,  H04N19/147 ,  H04N19/172 ,  H04N19/174 ,  H04N19/176 ,  H04N19/177 ,  H04N19/192 ,  H04N19/194 ,  H04N19/196 ,  H04N19/463 ,  H04N19/61 ,  H04N19/70

摘要： Encoding and decoding methods are presented that used offset-based adaptive reconstruction levels. The offset data is inserted in the bitstream with the encoded video data. The offset data may be differential data and may be an index to an array of offset values from which the differential offset is calculated by the decoder. The offset to an adaptive reconstruction level may be adjusted for each slice. The offsets may be specific to a particular level/index and data type. In some cases, offsets may only be sent for a subset of the levels. Higher levels may apply no offset, may apply an average offset, or may apply the offset used for the highest level having a level-specific offset.

摘要翻译： 提出了使用基于偏移的自适应重建级别的编码和解码方法。 偏移数据被插入到具有编码视频数据的比特流中。 偏移数据可以是差分数据，并且可以是由解码器计算差分偏移的偏移值的阵列的索引。 可以针对每个切片调整对自适应重建级别的偏移。 偏移量可能特定于特定级别/索引和数据类型。 在某些情况下，只能为子集的级别发送偏移量。 较高的等级可以不应用偏移量，可以应用平均偏移量，或者可以应用用于具有水平特定偏移量的最高级别的偏移量。

公开(公告)号：US08638247B2

公开(公告)日：2014-01-28

申请号：US13316958

申请日：2011-12-12

申请人： Gergely Ferenc Korodi ,  Dake He

发明人： Gergely Ferenc Korodi ,  Dake He

IPC分类号： H03M7/00

CPC分类号： H03M7/40

摘要： A method for encoding an input sequence of symbols. The method includes, sequentially, for each symbol in the input sequence, determining an estimated probability for that symbol based on a context model, identifying a codeword associated with a sequence of symbols resulting from appending that symbol to a previous sequence of symbols associated with that estimated probability, using an encoding tree associated with that estimated probability, and storing the codeword in a buffer element of a first-in-first-out buffer, wherein the buffer element is associated with the estimated probability. Stored codewords are output from the buffer in a first-in-first-out order.

摘要翻译： 一种编码输入符号序列的方法。 该方法包括依次为输入序列中的每个符号确定基于上下文模型的该符号的估计概率，识别与由该符号序列相关联的符号序列相关联的码元与之前相关联的符号相关联的码元相关联的码字 估计概率，使用与该估计概率相关联的编码树，以及将码字存储在先进先出缓冲器的缓冲器元件中，其中缓冲器元件与估计的概率相关联。 以先入先出的顺序从缓冲器输出存储的代码字。

公开(公告)号：US08577159B2

公开(公告)日：2013-11-05

申请号：US13232057

申请日：2011-09-14

申请人： Xiang Yu ,  Dake He ,  En-hui Yang

发明人： Xiang Yu ,  Dake He ,  En-hui Yang

IPC分类号： H04N7/50

CPC分类号： H04N19/82 ,  H04N19/117 ,  H04N19/136 ,  H04N19/147 ,  H04N19/172 ,  H04N19/18 ,  H04N19/19 ,  H04N19/196 ,  H04N19/463 ,  H04N19/48 ,  H04N19/51 ,  H04N19/61 ,  H04N19/70

摘要： Methods and devices for encoding and decoding data using adaptive transform domain filtering are described. The encoder determines a set of transform domain filter coefficients to be applied to a transform domain prediction. The filtering may, in some cases, also apply to quantized transform domain coefficients. Rate-distortion optimization may be used to determine the optimal filter coefficients on a frame-based, coding-unit-basis, or other basis.

摘要翻译： 描述了使用自适应变换域过滤对数据进行编码和解码的方法和装置。 编码器确定要应用于变换域预测的一组变换域滤波器系数。 在一些情况下，滤波也可以应用于量化的变换域系数。 可以使用速率失真优化来确定基于帧，编码单位或其他基础的最佳滤波器系数。

公开(公告)号：US08358698B2

公开(公告)日：2013-01-22

申请号：US12684374

申请日：2010-01-08

申请人： Xun Shi ,  Xiang Yu ,  Dake He

发明人： Xun Shi ,  Xiang Yu ,  Dake He

IPC分类号： H04B1/66 ,  G06K9/46

CPC分类号： H04N19/59 ,  H04N19/109 ,  H04N19/132 ,  H04N19/147 ,  H04N19/176 ,  H04N19/40 ,  H04N19/517

摘要： A transcoder and method of transcoding in which inter-prediction frames of a downsampled video are encoded using downsampled full-resolution residuals in the rate-distortion analysis used to locate a motion vector for a given partition in the downsampled video.

摘要翻译： 一种代码转换器和代码转换方法，其中下采样视频的帧间预测帧使用用于定位下采样视频中给定分区的运动矢量的速率 - 失真分析中的下采样全分辨率残差进行编码。

公开(公告)号：US20120328001A1

公开(公告)日：2012-12-27

申请号：US13166482

申请日：2011-06-22

申请人： Dake He ,  Xiang Yu ,  Jing Wang

发明人： Dake He ,  Xiang Yu ,  Jing Wang

IPC分类号： H04N7/26

CPC分类号： H04N11/02 ,  H04N19/00 ,  H04N19/105 ,  H04N19/124 ,  H04N19/13 ,  H04N19/176 ,  H04N19/187 ,  H04N19/503 ,  H04N19/593 ,  H04N19/61 ,  H04N19/70

摘要： Methods, systems, and computer programs for encoding and decoding image are described. In some aspects, an input data block and a prediction data block are accessed. A projection factor is generated based on a projection of the input data block onto the prediction data block. A scaled prediction data block is generated by multiplying the projection factor by the prediction data block. A residual data block is generated based on a difference between the input data block and the scaled prediction data block. In some aspects, a prediction data block, a residual data block, and a projection factor associated with the residual data block are accessed. A scaled prediction data block is generated by multiplying the projection factor by the prediction data block. An output data block is generated by summing the residual data block and the scaled prediction data block.

公开(公告)号：US08295342B2

公开(公告)日：2012-10-23

申请号：US11939882

申请日：2007-11-14

申请人： Jun Chen ,  Dake He ,  Ashish Jagmohan ,  Ligang Lu ,  Vadim Sheinin

发明人： Jun Chen ,  Dake He ,  Ashish Jagmohan ,  Ligang Lu ,  Vadim Sheinin

IPC分类号： H04N7/12

CPC分类号： H04N19/149 ,  H03M7/30 ,  H04N19/395 ,  H04N19/46 ,  H04N19/61

摘要： Disclosed are a method and system for video compression, wherein the video encoder has low computational complexity and high compression efficiency. The disclosed system comprises a video encoder and a video decoder, wherein the method for encoding includes the steps of converting a source frame into a space-frequency representation; estimating conditional statistics of at least one vector of space-frequency coefficients; estimating encoding rates based on the said conditional statistics; and applying Slepian-Wolf codes with the said computed encoding rates. The preferred method for decoding includes the steps of; generating a side-information vector of frequency coefficients based on previously decoded source data, encoder statistics, and previous reconstructions of the source frequency vector; and performing Slepian-Wolf decoding of at least one source frequency vector based on the generated side-information, the Slepian-Wolf code bits and the encoder statistics.

摘要翻译： 公开了一种用于视频压缩的方法和系统，其中视频编码器具有低计算复杂度和高压缩效率。 所公开的系统包括视频编码器和视频解码器，其中用于编码的方法包括以下步骤：将源帧转换成空间频率表示; 估计至少一个空 - 频系数矢量的条件统计; 基于所述条件统计估计编码率; 以及使用所述计算的编码速率的Slepian-Wolf码。 优选的解码方法包括以下步骤： 基于先前解码的源数据，编码器统计量和源频率向量的先前重建来生成频率系数的侧信息向量; 并且基于所生成的侧信息，Slepian-Wolf码比特和编码器统计，对至少一个源频率向量执行Slepian-Wolf解码。

公开(公告)号：US08230217B2

公开(公告)日：2012-07-24

申请号：US12250115

申请日：2008-10-13

申请人： Dake He ,  Ashish Jagmohan ,  Ligang Lu

发明人： Dake He ,  Ashish Jagmohan ,  Ligang Lu

IPC分类号： H04L29/06

CPC分类号： H04L9/065 ,  H04L9/3236 ,  H04L2209/30

摘要： A method and system provide for secure sharing of arbitrary data between users with limited mutual trust. A user can encode its information by using a Slepian-Wolf code at a rate which enables a second user to correctly decode only if the side-information it has satisfies a conditional entropy constraint. The key advantages are as follows. Firstly, it is very flexible, in that it enables secure sharing for general data including multimedia data. Secondly, by appropriate Slepian-Wolf code selection, it enables compression in conjunction with security. Thirdly, it can be used for the case where the data model is imperfectly known and trust is to be built up incrementally.

摘要翻译： 方法和系统提供在有限的相互信任的用户之间安全地共享任意数据。 用户可以通过使用Slepian-Wolf代码来以其速率对其信息进行编码，这使得仅当第二用户的边信息满足条件熵约束时才允许第二用户正确解码。 主要优点如下。 首先，它是非常灵活的，因为它可以实现包括多媒体数据在内的一般数据的安全共享。 其次，通过适当的Slepian-Wolf代码选择，可以与安全性一起进行压缩。 第三，它可以用于数据模型不完全知道的情况，信任将逐步建立。