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91. 发明授权

US07826537B2 Systems and methods with error resilience in enhancement layer bitstream of scalable video coding 有权
公开(公告)号：US07826537B2
公开(公告)日：2010-11-02
申请号：US10977773
申请日：2004-10-29
申请人： Ya-Qin Zhang , Shipeng Li , Feng Wu , Rong Yan
发明人： Ya-Qin Zhang , Shipeng Li , Feng Wu , Rong Yan
IPC分类号： H04N7/18
CPC分类号： H04N19/29 , H04N19/34 , H04N19/68 , H04N19/89
摘要： A scalable layered video coding scheme that encodes video data frames into multiple layers, including a base layer of comparatively low quality video and multiple enhancement layers of increasingly higher quality video, adds error resilience to the enhancement layer. Unique resynchronization marks are inserted into the enhancement layer bitstream in headers associated with each video packet, headers associated with each bit plane, and headers associated with each video-of-plane (VOP) segment. Following transmission of the enhancement layer bitstream, the decoder tries to detect errors in the packets. Upon detection, the decoder seeks forward in the bitstream for the next known resynchronization mark. Once this mark is found, the decoder is able to begin decoding the next video packet. With the addition of many resynchronization marks within each frame, the decoder can recover very quickly and with minimal data loss in the event of a packet loss or channel error in the received enhancement layer bitstream. The video coding scheme also facilitates redundant encoding of header information from the higher-level VOP header down into lower level bit plane headers and video packet headers. Header extension codes are added to the bit plane and video packet headers to identify whether the redundant data is included.

92. 发明授权

US07684493B2 Systems and methods with error resilience in enhancement layer bitstream of scalable video coding 失效
公开(公告)号：US07684493B2
公开(公告)日：2010-03-23
申请号：US10945011
申请日：2004-09-20
申请人： Ya-Qin Zhang , Shipeng Li , Feng Wu , Rong Yan
发明人： Ya-Qin Zhang , Shipeng Li , Feng Wu , Rong Yan
IPC分类号： H04N7/18
CPC分类号： H04N19/29 , H04N19/34 , H04N19/68 , H04N19/89
摘要： A scalable layered video coding scheme that encodes video data frames into multiple layers, including a base layer of comparatively low quality video and multiple enhancement layers of increasingly higher quality video, adds error resilience to the enhancement layer. Unique resynchronization marks are inserted into the enhancement layer bitstream in headers associated with each video packet, headers associated with each bit plane, and headers associated with each video-of-plane (VOP) segment. Following transmission of the enhancement layer bitstream, the decoder tries to detect errors in the packets. Upon detection, the decoder seeks forward in the bitstream for the next known resynchronization mark. Once this mark is found, the decoder is able to begin decoding the next video packet. With the addition of many resynchronization marks within each frame, the decoder can recover very quickly and with minimal data loss in the event of a packet loss or channel error in the received enhancement layer bitstream. The video coding scheme also facilitates redundant encoding of header information from the higher-level VOP header down into lower level bit plane headers and video packet headers. Header extension codes are added to the bit plane and video packet headers to identify whether the redundant data is included.

93. 发明授权

US07646810B2 Video coding 有权
标题翻译：视频编码
公开(公告)号：US07646810B2
公开(公告)日：2010-01-12
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： H04B1/66 , H04N7/12 , H04N11/04 , 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。

94. 发明申请

US20090315905A1 LAYERED TEXTURE COMPRESSION ARCHITECTURE 有权
标题翻译：层叠式压缩架构
公开(公告)号：US20090315905A1
公开(公告)日：2009-12-24
申请号：US12141094
申请日：2008-06-18
申请人： Yan Lu , John Tardif , Matt Bronder , Huifeng Shen , Feng Wu , Shipeng Li
发明人： Yan Lu , John Tardif , Matt Bronder , Huifeng Shen , Feng Wu , Shipeng Li
IPC分类号： G06T9/00
CPC分类号： G06T15/04 , H04N19/13 , H04N19/60
摘要： Various technologies for a layered texture compression architecture. In one implementation, the layered texture compression architecture may include a texture consumption pipeline. The texture compression pipeline may include a processor, memory devices, and textures compressed at varying ratios of compression. The textures within the pipeline may be compressed at ratios in accordance with characteristics of the devices in the pipeline that contains and processes the textures.
摘要翻译：各种技术用于分层纹理压缩架构。在一个实现中，分层纹理压缩架构可以包括纹理消耗流水线。纹理压缩管线可以包括以不同的压缩比压缩的处理器，存储器件和纹理。可以根据流水线中包含和处理纹理的设备的特性，以比例压缩流水线内的纹理。

95. 发明授权

US07627037B2 Barbell lifting for multi-layer wavelet coding 有权
标题翻译：杠铃提升用于多层小波编码
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
IPC分类号： H04B1/66 , H04N7/12 , H04N11/02 , H04N11/04
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。

96. 发明申请

US20090238267A1 Methods And Apparatuses For Use In Switching Between Streaming Video Bitstreams 有权
标题翻译：用于在流式视频比特流之间切换的方法和装置
公开(公告)号：US20090238267A1
公开(公告)日：2009-09-24
申请号：US12472266
申请日：2009-05-26
申请人： Shipeng Li , Feng Wu , Xiaoyan Sun , Goubin Shen
发明人： Shipeng Li , Feng Wu , Xiaoyan Sun , Goubin Shen
IPC分类号： H04N7/26 , G06K9/36
CPC分类号： H04N19/625 , H04N19/126 , H04N19/577 , H04N19/61 , H04N21/23424 , H04N21/23439 , H04N21/2662
摘要： Improved methods and apparatuses are provided for switching of streaming data bitstreams, such as, for example, used in video streaming and other related applications. Some desired functionalities provided herein include random access, fast forward and fast backward, error-resilience and bandwidth adaptation. The improved methods and apparatuses can be configured to increase coding efficiency of and/or reduce the amount of data needed to encode a switching bitstream.
摘要翻译：提供改进的方法和装置用于切换流数据比特流，例如用于视频流和其他相关应用中。本文提供的一些期望的功能包括随机访问，快进和快退，错误恢复和带宽适配。改进的方法和装置可以被配置为增加对切换比特流进行编码所需的数据量和/或减少编码效率。

97. 发明申请

US20090074307A1 Textual Image Coding 有权
标题翻译：文字图像编码
公开(公告)号：US20090074307A1
公开(公告)日：2009-03-19
申请号：US11855075
申请日：2007-09-13
申请人： Yan Lu , Feng Wu , Wenpeng Ding , Shipeng Li
发明人： Yan Lu , Feng Wu , Wenpeng Ding , Shipeng Li
IPC分类号： G06T9/00 , G06K9/36
CPC分类号： G06T9/00 , H04N1/644 , H04N19/12 , H04N19/124 , H04N19/136 , H04N19/176 , H04N19/186 , H04N19/61 , H04N19/91
摘要： Textual image coding involves coding textual portions of an image. In an example embodiment, a textual block of an image is decomposed into multiple base colors and an index map, with the index map having index values that each reference a base color so as to represent the textual block. A set of neighbor index values are ascertained for a particular index of the index map. A context that matches the neighbor index values is generated from among multiple contexts. The matching context includes a set of symbols. At least one symbol-to-value mapping is determined based on the matching context and a symbol to which the particular index corresponds. The particular index is remapped to a particular value in accordance with the symbol-to-value mapping and the symbol to which the particular index corresponds.
摘要翻译：文本图像编码涉及对图像的文本部分进行编码。在示例实施例中，图像的文本块被分解为多个基色和索引图，索引图具有每个引用基色以便表示文本块的索引值。确定索引图的特定索引的一组邻近索引值。从多个上下文中生成匹配邻居索引值的上下文。匹配的上下文包括一组符号。基于匹配上下文和特定索引对应的符号来确定至少一个符号到值映射。根据符号对值映射和特定索引对应的符号将特定索引重新映射到特定值。

98. 发明申请

US20090003430A1 Video Coding Using Spatio-Temporal Texture Synthesis 有权
标题翻译：使用时空纹理合成的视频编码
公开(公告)号：US20090003430A1
公开(公告)日：2009-01-01
申请号：US11768862
申请日：2007-06-26
申请人： Xiaoyan Sun , Chunbo Zhu , Feng Wu , Shipeng Li
发明人： Xiaoyan Sun , Chunbo Zhu , Feng Wu , Shipeng Li
IPC分类号： H04N7/12
CPC分类号： G06T7/40 , G06T2207/10016 , H04N19/27 , H04N19/577
摘要： Systems and methods for video coding using spatio-temporal texture synthesis are described. In one aspect, a video data coding pipeline portion of the codec removes texture blocks from the video data to generate coded video data. The removed texture blocks are selected based on an objective determination that each of the remove texture blocks can be synthesized from spatio-temporal neighboring samples during decoding operations. The objective determinations are made using local block-based motion information independent of global motion models. An indication of which texture blocks were removed is provided to a decoder in addition to the coded video data. Decoding logic of the codec decodes the video data using a standard decoding algorithm. The decoding logic also restores the removed texture blocks via spatio-temporal texture synthesis to generate synthesized video data. The decoded and synthesized video data is presented to a user.
摘要翻译：描述使用时空纹理合成的视频编码的系统和方法。一方面，编解码器的视频数据编码流水线部分从视频数据中去除纹理块以产生编码视频数据。基于在解码操作期间可以从空时相邻采样中合成每个去除纹理块的目标确定来选择去除的纹理块。使用与全局运动模型无关的局部基于块的运动信息进行客观确定。去除了纹理块的指示除了编码的视频数据之外还提供给解码器。编解码器的解码逻辑使用标准解码算法解码视频数据。解码逻辑还通过空间 - 时间纹理合成恢复去除的纹理块，以产生合成的视频数据。解码和合成的视频数据被呈现给用户。

99. 发明申请

US20080291065A1 Wyner-Ziv Coding with Multiple Side Information 有权
标题翻译： Wyner-Ziv编码与多边信息
公开(公告)号：US20080291065A1
公开(公告)日：2008-11-27
申请号：US12047317
申请日：2008-03-12
申请人： Yan Lu , Feng Wu , Mei Guo , Shipeng Li
发明人： Yan Lu , Feng Wu , Mei Guo , Shipeng Li
IPC分类号： H03M7/00
CPC分类号： H03M7/30 , H03M13/2957 , H03M13/6312
摘要： A Wyner-Ziv coding scheme jointly utilizes multiple side information at the decoder is described. A new probability model is introduced based on an extended turbo decoding trellis, so that the transitional probability is calculated from the probabilities conditioned on multiple side information. The proposed scheme handles multiple side information in a multi-dimensional manner to potentially achieve coding performance better than either selecting one side information or generating a single side information by averaging several side information. When the decoder receives multiple streams of parity bits, the conditional probabilities on the parity bits from the multiple streams all contribute in turbo decoding. The errors existing in some of the streams can be automatically eliminated during the decoding process.
摘要翻译：描述了在解码器处共同利用多边信息的Wyner-Ziv编码方案。基于扩展turbo解码网格引入新的概率模型，从而根据多边信息的概率计算过渡概率。所提出的方案以多维方式处理多个侧面信息，以便比选择一个侧面信息或通过平均多个边缘信息来生成单个侧面信息来潜在地实现编码性能。当解码器接收到多个奇偶校验位流时，来自多个流的奇偶校验位的条件概率在turbo解码中都有贡献。在解码过程中可以自动消除一些流中存在的错误。

100. 发明申请

US20080152008A1 Offline Motion Description for Video Generation 有权
标题翻译：视频生成的离线运动描述
公开(公告)号：US20080152008A1
公开(公告)日：2008-06-26
申请号：US11613972
申请日：2006-12-20
申请人： Xiaoyan Sun , Feng Wu , Shipeng Li , Wang Yi
发明人： Xiaoyan Sun , Feng Wu , Shipeng Li , Wang Yi
IPC分类号： H04N7/26
CPC分类号： H04N19/517 , H04N19/46 , H04N19/567 , H04N19/70
摘要： The present motion description technique provides a technique for defining a motion description offline. The motion description can then later be extracted from a multimedia representation and adapted to various multimedia-related applications in a manner that not only reduces the processing for motion estimation but also provides high compression performance during an encoding/transcoding process. The motion description technique employs a motion alignment scheme utilizing a hierarchical model to describe motion data of each macroblock in a coarse-to-fine manner. Motion information is obtained for motion vectors of macroblocks for different partition modes. The resulting motion information is compressed based on correlations among spatially neighboring macroblocks and among partition modes to form the offline motion description.
摘要翻译：本运动描述技术提供了一种用于离线定义运动描述的技术。随后可以从多媒体表示中提取运动描述，并以不仅减少运动估计的处理，而且在编码/转码过程期间提供高压缩性能的方式适应各种多媒体相关应用。运动描述技术采用利用分层模型的运动对准方案，以粗略到精细的方式描述每个宏块的运动数据。对于不同分区模式的宏块的运动矢量获得运动信息。所得到的运动信息基于空间相邻宏块之间的相关性和分区模式之间的压缩，以形成离线运动描述。

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