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81. 发明申请

US20090252146A1 CONTINUOUS NETWORK CODING IN WIRELESS RELAY NETWORKS 审中-公开
标题翻译：无线中继网连续网络编码
公开(公告)号：US20090252146A1
公开(公告)日：2009-10-08
申请号：US12061661
申请日：2008-04-03
申请人： Chong Luo , Wei Pu , Feng Wu , Shipeng Li , Chang Wen Chen
发明人： Chong Luo , Wei Pu , Feng Wu , Shipeng Li , Chang Wen Chen
IPC分类号： H04L12/28
CPC分类号： H04B7/15521 , H03M13/1102 , H03M13/2906 , H03M13/3761 , H04L1/0057 , H04L1/0077 , H04L2001/0097
摘要： Described is continuous network coding, in which a relay sends probability data comprising a continuous number for use as parity data. The node receives streams of bits sent from sources towards a destination, and computes the probability data based on current noise data and/or fading data. A selected set of the bits (all or some subset thereof) are combined, e.g., XOR-ed or concatenated, and send to the destination. Phase modulation is performed to convey probability information based on the probability data. The destination demodulates the signal to obtain the probability information, and combines the probability information with the data directly received from sources to perform joint decoding. The number of bits in the set of selected bits may be adaptively chosen based on current channel conditions, e.g., increased when the channel conditions from the sources directly to a destination are poor relative to the channel conditions via the relay.
摘要翻译：描述了连续网络编码，其中中继发送包括用作奇偶校验数据的连续数字的概率数据。节点接收从源向目的地发送的比特流，并且基于当前噪声数据和/或衰落数据计算概率数据。选择的一组位（其全部或某些子集）被组合，例如XOR编辑或级联，并发送到目的地。执行相位调制以基于概率数据传送概率信息。目的地解调信号以获得概率信息，并且将概率信息与从源直接接收的数据组合以执行联合解码。可以基于当前信道条件来自适应地选择所选位组中的比特数，例如，当从源直接到目的地的信道条件相对于经由中继的信道条件差时，增加。

82. 发明授权

US07580461B2 Barbell lifting for wavelet coding 有权
标题翻译：杠铃提升用于小波编码
公开(公告)号：US07580461B2
公开(公告)日：2009-08-25
申请号：US10911836
申请日：2004-08-04
申请人： Shipeng Li , Ruiqin Xiong , Lin Luo , Jizheng Xu , Feng Wu
发明人： Shipeng Li , Ruiqin Xiong , Lin Luo , Jizheng Xu , Feng Wu
IPC分类号： H04N7/12 , H04N11/02 , H04N11/04 , G06K9/36 , G06K9/46
CPC分类号： H04N19/635 , H04N19/119 , H04N19/139 , H04N19/61 , H04N19/63
摘要： A method for encoding motion-compensated video data includes generating, for a current frame, a high-pass wavelet coefficient based on a function of pixels in a temporally adjacent frame. The operations are repeated for multiple pixels in an array of pixels in the current frame to form an array of high-pass wavelet coefficients. A low-pass wavelet coefficient is generated based on a function of the high-pass wavelet coefficients. A system for coding video data includes a temporal wavelet decomposition module decomposing a pixel into a high-pass coefficient by performing a discrete wavelet transform on the pixel, a function of pixels in a previous frame, and/or a function of pixels in a subsequent frame. The system includes a motion estimation module generating motion vectors associated with the pixels in the previous frame and in the subsequent frame.
摘要翻译：用于编码运动补偿视频数据的方法包括：基于时间上相邻帧中的像素的函数为当前帧生成高通小波系数。对当前帧中的像素阵列中的多个像素重复操作以形成高通小波系数的阵列。基于高通小波系数的函数产生低通小波系数。用于编码视频数据的系统包括时间小波分解模块，其通过对像素执行离散小波变换，先前帧中的像素的功能和/或随后的像素的函数将像素分解为高通系数帧。该系统包括运动估计模块，其生成与前一帧和随后帧中的像素相关联的运动矢量。

83. 发明申请

US20090067491A1 Learning-Based Image Compression 有权
标题翻译：基于学习的图像压缩
公开(公告)号：US20090067491A1
公开(公告)日：2009-03-12
申请号：US11851653
申请日：2007-09-07
申请人： Xiaoyan Sun , Feng Wu , Shipeng Li
发明人： Xiaoyan Sun , Feng Wu , Shipeng Li
IPC分类号： G06T9/00
CPC分类号： H04N19/59 , H04N19/132 , H04N19/14 , H04N19/587 , H04N19/85 , H04N19/90
摘要： Learning-based image compression is described. In one implementation, an encoder possessing a first set of learned visual knowledge primitives excludes visual information from an image prior to compression. A decoder possessing an independently learned set of visual knowledge primitives synthesizes the excluded visual information into the image after decompression. The encoder and decoder are decoupled with respect to the information excluded at the encoder and the information synthesized at the decoder. This results in superior data compression since the information excluded at the encoder is dropped completely and not transferred to the decoder. Primitive visual elements synthesized at the decoder may be different than primitive visual elements dropped at the encoder, but the resulting reconstituted image is perceptually equivalent to the original image.
摘要翻译：描述基于学习的图像压缩。在一个实现中，具有第一组学习视觉知识原语的编码器在压缩之前从图像中排除视觉信息。具有独立学习的视觉知识图元组的解码器在解压缩之后将排除的视觉信息合成到图像中。编码器和解码器相对于在编码器处排除的信息和在解码器处合成的信息去耦合。这导致优异的数据压缩，因为在编码器处排除的信息完全丢弃并且不传送到解码器。在解码器处合成的原始视觉元素可能不同于在编码器处丢弃的原始视觉元素，但是所产生的重构图像在听觉上等同于原始图像。

84. 发明申请

US20070201751A1 Block-Based Fast Image Compression 有权
标题翻译：基于块的快速图像压缩
公开(公告)号：US20070201751A1
公开(公告)日：2007-08-30
申请号：US11276342
申请日：2006-02-24
申请人： Feng Wu , Bo Qin , Wenpeng Ding , Dong Liu , Jian Wang , Yuwen He , Zheng Ni
发明人： Feng Wu , Bo Qin , Wenpeng Ding , Dong Liu , Jian Wang , Yuwen He , Zheng Ni
IPC分类号： G06K9/36
CPC分类号： G06K9/00456 , H04N19/12 , H04N19/124 , H04N19/14 , H04N19/147 , H04N19/149 , H04N19/176 , H04N19/19 , H04N19/196
摘要： Systems and methods for block-based fast image compression are described. In one aspect, a digital image is segmented into multiple blocks. A respective set of statistical characteristics is identified for each of the segmented blocks. Each of the blocks is encoded with a particular encoding algorithm of multiple encoding algorithms. The particular encoding algorithm that is used to encode a particular block segmented from the digital image is selected to efficiently encode the block in view of statistical characteristics associated with the block. Thus, blocks of different block types may be encoded with different encoding algorithms.
摘要翻译：描述了基于块的快速图像压缩的系统和方法。在一个方面，数字图像被分割成多个块。针对每个分段块识别相应的一组统计特性。每个块都用多种编码算法的特定编码算法进行编码。选择用于编码从数字图像分割的特定块的特定编码算法，以便考虑到与块相关联的统计特性来有效地对块进行编码。因此，不同块类型的块可以用不同的编码算法进行编码。

85. 发明授权

US07154952B2 Timestamp-independent motion vector prediction for predictive (P) and bidirectionally predictive (B) pictures 有权
公开(公告)号：US07154952B2
公开(公告)日：2006-12-26
申请号：US10620320
申请日：2003-07-15
申请人： Alexandros Tourapis , Shipeng Li , Feng Wu , Gary J. Sullivan
发明人： Alexandros Tourapis , Shipeng Li , Feng Wu , Gary J. Sullivan
IPC分类号： H04N7/12
CPC分类号： H04N19/00684 , H04N19/103 , H04N19/105 , H04N19/109 , H04N19/137 , H04N19/142 , H04N19/147 , H04N19/176 , H04N19/19 , H04N19/513 , H04N19/52 , H04N19/61 , H04N19/70
摘要： Methods and apparatuses are provided for achieving improved video coding efficiency through the use of Motion Vector Predictors (MVPs) for the encoding or decoding of motion parameters within the calculation of the motion information in B pictures and/or P pictures. Certain exemplary methods and apparatuses selectively apply temporal and/or spatial prediction. Rate Distortion Optimization (RDO) techniques are also applied in certain methods and apparatuses to further help improve coding efficiency.

86. 发明申请

US20060072662A1 Improved Video Coding 有权
标题翻译：改进的视频编码
公开(公告)号：US20060072662A1
公开(公告)日：2006-04-06
申请号：US11275103
申请日：2005-12-09
申请人： Alexandros Tourapis , Feng Wu , Shipeng Li
发明人： Alexandros Tourapis , Feng Wu , Shipeng Li
IPC分类号： H04N7/12 , H04N11/04 , H04B1/66 , H04N11/02
CPC分类号： H04N19/109 , H04N19/147 , H04N19/176 , H04N19/513 , H04N19/52 , H04N19/56 , H04N19/573 , H04N19/577
摘要： Improved video coding is described to encode video data within a sequence of video frames. To this end, at least a portion of a reference frame is encoded to include motion information associated with the portion of the reference frame. At least a portion of a predictable frame that includes video data predictively correlated to said portion of said reference frame is defined based on the motion information. At least said portion of the predictable frame is encoded without including corresponding motion information and including mode identifying data. The mode identifying data indicate that the encoded portion of the predictable frame can be directly derived using at least the motion information associated with the portion of the reference frame.
摘要翻译：描述了改进的视频编码以对视频帧序列内的视频数据进行编码。为此，参考帧的至少一部分被编码以包括与参考帧的该部分相关联的运动信息。基于运动信息来定义包括与所述参考帧的所述部分预测相关的视频数据的可预测帧的至少一部分。可预测帧的至少所述部分被编码而不包括对应的运动信息并且包括模式识别数据。模式识别数据指示可以使用至少与参考帧的部分相关联的运动信息直接导出可预测帧的编码部分。

87. 发明申请

US20060067402A1 Seamless switching of scalable video bitstreams 有权
公开(公告)号：US20060067402A1
公开(公告)日：2006-03-30
申请号：US11280619
申请日：2005-11-16
申请人： Feng Wu , Shipeng Li , Xiaoyan Sun , Ya-Qin Zhang
发明人： Feng Wu , Shipeng Li , Xiaoyan Sun , Ya-Qin Zhang
IPC分类号： H04N7/12 , H04B1/66 , H04N11/02 , H04N11/04
CPC分类号： G06T9/00 , H04N21/234327 , H04N21/2402 , H04N21/2662
摘要： A seamless bitstream switching schema is presented. The schema takes advantage of both the high coding efficiency of non-scalable bitstreams and the flexibility of scalable bitstreams. Small bandwidth fluctuations are accommodated by the scalability of the bitstreams, while large bandwidth fluctuations are tolerated by switching among scalable bitstreams. This seamless bitstream switching schema significantly improves the efficiency of scalable video coding over a broad range of bit rates.

88. 发明申请

US20060008038A1 Adaptive updates in motion-compensated temporal filtering 有权
公开(公告)号：US20060008038A1
公开(公告)日：2006-01-12
申请号：US11126997
申请日：2005-05-10
申请人： Li Song , Jizheng Xu , Feng Wu
发明人： Li Song , Jizheng Xu , Feng Wu
IPC分类号： H04B1/10
CPC分类号： H04N19/615 , H04N19/124 , H04N19/13 , H04N19/577 , H04N19/61 , H04N19/63
摘要： Techniques and tools are described for scalable video coding and decoding. For example, a video encoder and decoder perform adaptive update operations in lifting-based motion-compensated temporal filtering and inverse motion-compensated temporal filtering, respectively. The encoder, in a prediction stage, computes a motion-compensated prediction for an odd image and computes a high-pass image as the difference between the odd image and the prediction. For an update stage, the encoder performs motion compensation on the high-pass image (and potentially another high-pass image) to compute a motion-compensated update. Based upon perceptual criteria, the encoder adaptively combines the update with an even image to form a low-pass image. The decoder, for an update stage, performs motion compensation on one or more high-pass images to compute a motion-compensated update. Based upon perceptual criteria, the encoder adaptively combines the update with a low-pass image to reconstruct an even frame.

89. 发明申请

US20050195895A1 System and method for robust video coding using progressive fine-granularity scalable (PFGS) coding 有权
公开(公告)号：US20050195895A1
公开(公告)日：2005-09-08
申请号：US11120249
申请日：2005-05-02
申请人： Feng Wu , Shipeng Li , Ya-Qin Zhang
发明人： Feng Wu , Shipeng Li , Ya-Qin Zhang
IPC分类号： G06T9/00 , H04N19/895 , H04N7/12
CPC分类号： H04N19/36 , H04N19/105 , H04N19/157 , H04N19/169 , H04N19/34 , H04N19/503 , H04N19/51 , H04N19/895
摘要： A video encoding scheme employs progressive fine-granularity layered coding to encode video data frames into multiple layers, including a base layer of comparatively low quality video and multiple enhancement layers of increasingly higher quality video. Some of the enhancement layers in a current frame are predicted from at least one lower quality layer in a reference frame, whereby the lower quality layer is not necessarily the base layer.

90. 发明申请

US20050190978A1 Barbell lifting for wavelet coding 有权
标题翻译：杠铃提升用于小波编码
公开(公告)号：US20050190978A1
公开(公告)日：2005-09-01
申请号：US10911836
申请日：2004-08-04
申请人： Shipeng Li , Ruiqin Xiong , Lin Luo , Jizheng Xu , Feng Wu
发明人： Shipeng Li , Ruiqin Xiong , Lin Luo , Jizheng Xu , Feng Wu
IPC分类号： G06K9/36 , H04N7/26
CPC分类号： H04N19/635 , H04N19/119 , H04N19/139 , H04N19/61 , H04N19/63
摘要： A method for encoding motion-compensated video data includes generating, for a current frame, a high-pass wavelet coefficient based on a function of pixels in a temporally adjacent frame. The operations are repeated for multiple pixels in an array of pixels in the current frame to form an array of high-pass wavelet coefficients. A low-pass wavelet coefficient is generated based on a function of the high-pass wavelet coefficients. A system for coding video data includes a temporal wavelet decomposition module decomposing a pixel into a high-pass coefficient by performing a discrete wavelet transform on the pixel, a function of pixels in a previous frame, and/or a function of pixels in a subsequent frame. The system includes a motion estimation module generating motion vectors associated with the pixels in the previous frame and in the subsequent frame.
摘要翻译：用于编码运动补偿视频数据的方法包括：基于时间上相邻帧中的像素的函数为当前帧生成高通小波系数。对当前帧中的像素阵列中的多个像素重复操作以形成高通小波系数的阵列。基于高通小波系数的函数产生低通小波系数。用于编码视频数据的系统包括时间小波分解模块，其通过对像素执行离散小波变换，先前帧中的像素的功能和/或随后的像素的函数将像素分解为高通系数帧。该系统包括运动估计模块，其生成与前一帧和随后帧中的像素相关联的运动矢量。

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