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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
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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公开(公告)号：US07627037B2
公开(公告)日：2009-12-01
申请号：US10912033
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
CPC分类号： H04N19/615 , H04N19/103 , H04N19/13 , H04N19/147 , H04N19/176 , H04N19/19 , H04N19/52 , H04N19/61 , H04N19/63
摘要： A method for coding video data includes scalably generating layers of wavelet coefficients based on a frame of video data, scalably generating motion vector data associated with the plurality of layers, and combining the motion vector data and the plurality of layers of wavelet coefficients into a coded video frame representing the frame of video data. The method may further include transmitting the coded video frame. A system for coding video data includes a temporal decomposition module scalably applying a barbell function to a frame of video data, and a motion vector module scalably coding motion vector data at multiple levels of refinement.
摘要翻译： 一种用于编码视频数据的方法包括基于视频数据的帧可缩放地生成小波系数层，可扩展地生成与多个层相关联的运动矢量数据，并将运动矢量数据和多个小波系数层组合成编码 表示视频数据帧的视频帧。 该方法还可以包括发送编码的视频帧。 用于编码视频数据的系统包括可缩放地对视频数据帧施加杠铃功能的时间分解模块，以及以多级细化可变地编码运动矢量数据的运动矢量模块。
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公开(公告)号：US08538177B2
公开(公告)日：2013-09-17
申请号：US12847001
申请日：2010-07-30
申请人： Jizheng Xu , Xiulian Peng , Feng Wu
发明人： Jizheng Xu , Xiulian Peng , Feng Wu
IPC分类号： H04N7/50
CPC分类号： H04N19/147 , H04N19/105 , H04N19/176
摘要： Images can be coded based on filters defined by filter coefficients or weights assigned to previously decoded pixel values of nearby lines. The filter coefficients can be selected based on evaluation of a set of predetermined filters, or filters can be adaptively generated and then evaluated. The filters generally are based on pixel values in previous rows or columns, but not values in the current row or column. In some examples, filters are adaptively generated pixel by pixel, or portions of previous rows, columns, or previously decoded portions of the current row or columns are used to provide line templates. A filter is generally selected to reduce coding error based on a least square difference between the current value and a prediction.
摘要翻译： 可以基于由分配给附近行的先前解码的像素值的滤波器系数或权重定义的滤波器对图像进行编码。 可以基于一组预定滤波器的评估来选择滤波器系数，或者可以自适应地生成滤波器，然后进行评估。 过滤器通常基于先前行或列中的像素值，但不是当前行或列中的值。 在一些示例中，滤波器被逐个像素自适应地生成，或者使用当前行或列的先前行，列或先前解码的部分的部分来提供行模板。 通常选择滤波器以基于当前值和预测之间的最小平方差来减少编码误差。
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公开(公告)号：US08243812B2
公开(公告)日：2012-08-14
申请号：US12503582
申请日：2009-07-15
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
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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公开(公告)号：US20120076414A1
公开(公告)日：2012-03-29
申请号：US12891552
申请日：2010-09-27
申请人： Jizheng Xu , Binxing Jiao , Feng Wu
发明人： Jizheng Xu , Binxing Jiao , Feng Wu
CPC分类号： G06F16/50 , G06F16/9038 , G06K9/00677
摘要： Techniques involve visually summarizing documents (e.g., search results, a collection of documents, etc.) using images which are visually representative of the documents for which the images represent. The images representing the documents may be external images obtained from sources other than the documents. The external images may be obtained from the sources other than the documents by performing a separate image based search using key phrases from the documents rather than extracting the images directly from within the documents themselves. Alternatively, an algorithm may be used to determine an image type, which may be chosen from a selection of external images, thumbnail images, or internal imaged taken directly from the collection of documents, that is suited to represent each document in the collection of documents. A snippet of the documents may be displayed along with the images which visually represent each of the documents.
摘要翻译： 技术涉及使用视觉上代表图像所代表的文档的图像来可视地总结文档（例如，搜索结果，文档集合等）。 表示文件的图像可以是从文档之外的源获得的外部图像。 外部图像可以通过使用文档中的关键短语执行单独的图像搜索而不是从文档之外的来源获得，而不是直接从文档本身中提取图像。 或者，可以使用算法来确定图像类型，其可以从外部图像的选择，缩略图图像或直接从文档集合中获取的内部图像中选择，其适于表示文档集合中的每个文档 。 文档的片段可以与可视地表示每个文档的图像一起显示。
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26.发明授权公开(公告)号：US07860161B2
公开(公告)日：2010-12-28
申请号：US10736955
申请日：2003-12-15
申请人： Jizheng Xu , Feng Wu , Shipeng Li
发明人： Jizheng Xu , Feng Wu , Shipeng Li
CPC分类号： H04N19/34 , H04N19/149 , H04N19/164 , H04N19/187 , H04N19/40
摘要： Systems and methods for enhancement layer transcoding of fine-granular scalable video bitstreams are described. In one aspect, an enhancement layer bitstream is decoded from encoded video data. The encoded video data includes a base layer and one or more enhancement layers. The encoded video data is encoded according to a high HQRB (high quality reference bit-rate). Data throughput characteristics of a network coupled to a client computing device are determined. A new HQRB is calculated based on the data throughput characteristics. The decoded enhancement layer bitstream is then encoded based on the new HQRB to generate a transcoded enhancement layer for streaming to the client computing device. The base layer is not decoded for streaming to the client computing device.
摘要翻译： 描述了细粒度可分级视频比特流的增强层转码的系统和方法。 在一个方面，从编码视频数据解码增强层比特流。 编码视频数据包括基本层和一个或多个增强层。 编码的视频数据根据高HQRB（高质量参考比特率）进行编码。 确定耦合到客户端计算设备的网络的数据吞吐量特性。 基于数据吞吐量特性计算新的HQRB。 然后，基于新的HQRB对解码的增强层比特流进行编码，以生成用于流式传输到客户端计算设备的转码增强层。 基本层未被解码用于流传送到客户端计算设备。
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公开(公告)号：US20100020882A1
公开(公告)日：2010-01-28
申请号：US12503582
申请日：2009-07-15
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： H04N7/30
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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公开(公告)号：US20080310506A1
公开(公告)日：2008-12-18
申请号：US11763955
申请日：2007-06-15
申请人： Jizheng Xu , Feng Wu
发明人： Jizheng Xu , Feng Wu
CPC分类号： H04N19/577 , H04N19/593 , H04N19/61 , H04N19/63
摘要： Systems and methods are described for joint spatio-temporal prediction (JSTP) during video coding. A given block of pixels is simultaneously predicted via inter frame prediction and intra frame prediction. The joint spatio-temporal prediction provides a new JSTP coding mode besides inter and intra modes in coding schemata such as the H.264/AVC video coding standard. In one implementation, subband decomposition obtains a high-pass component of inter frame prediction of a block and a low-pass component of intra frame prediction of the same block. The high-pass component of the inter prediction and the low-pass component of the intra prediction are combined to produce the joint spatio-temporal prediction. In one implementation, a difference between the original block and the JSTP prediction is coded in a bitstream to represent the block.
摘要翻译： 在视频编码期间描述了联合时空预测（JSTP）的系统和方法。 通过帧间预测和帧内预测同时预测给定的像素块。 联合时空预测除H.264 / AVC视频编码标准等编码模式之外，还提供了除了帧内和模式之外的新的JSTP编码模式。 在一个实现中，子带分解获得块的帧间预测的高通分量和同一块的帧内预测的低通分量。 帧内预测的高通分量和帧内预测的低通分量被组合以产生联合时空预测。 在一个实现中，原始块和JSTP预测之间的差异被编码在比特流中以表示块。
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公开(公告)号：US20060114993A1
公开(公告)日：2006-06-01
申请号：US11127001
申请日：2005-05-10
申请人： Ruiqin Xiong , Jizheng Xu , Feng Wu , Shipeng Li
发明人： Ruiqin Xiong , Jizheng Xu , Feng Wu , Shipeng Li
CPC分类号： H04N19/615 , H04N19/13 , H04N19/154 , H04N19/172 , H04N19/59 , H04N19/61 , H04N19/63 , H04N19/635
摘要： Techniques and tools are described for scalable video coding and decoding. For example, a 3D sub-band decoder receives video encoded using spatial-domain motion-compensated temporal filtering at a first spatial resolution. The decoder decodes at least part of the video for output at a second spatial resolution lower than the first spatial resolution. The decoder uses any of several techniques to improve performance by devoting extra computational resources to the decoding, devoting extra buffer resources to storing reference picture information, and/or considering spatial high-pass sub-band information.
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公开(公告)号：US20050190979A1
公开(公告)日：2005-09-01
申请号：US10912033
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
CPC分类号： H04N19/615 , H04N19/103 , H04N19/13 , H04N19/147 , H04N19/176 , H04N19/19 , H04N19/52 , H04N19/61 , H04N19/63
摘要： A method for coding video data includes scalably generating layers of wavelet coefficients based on a frame of video data, scalably generating motion vector data associated with the plurality of layers, and combining the motion vector data and the plurality of layers of wavelet coefficients into a coded video frame representing the frame of video data. The method may further include transmitting the coded video frame. A system for coding video data includes a temporal decomposition module scalably applying a barbell function to a frame of video data, and a motion vector module scalably coding motion vector data at multiple levels of refinement.
摘要翻译： 一种用于编码视频数据的方法包括基于视频数据的帧可缩放地生成小波系数层，可扩展地生成与多个层相关联的运动矢量数据，并将运动矢量数据和多个小波系数层组合成编码 表示视频数据帧的视频帧。 该方法还可以包括发送编码的视频帧。 用于编码视频数据的系统包括可缩放地对视频数据帧施加杠铃功能的时间分解模块，以及以多级细化可变地编码运动矢量数据的运动矢量模块。
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