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1. 发明申请

WO2007092661A2 VARIABLE LENGTH CODING FOR SPARSE COEFFICIENTS 审中-公开
标题翻译：可变长度编码稀疏系数
公开(公告)号：WO2007092661A2
公开(公告)日：2007-08-16
申请号：PCT/US2007/060693
申请日：2007-01-18
申请人： CISCO TECHNOLOGY, INC. , CHEN, Wen-Hsiung , TOEBES, John, A.
发明人： CHEN, Wen-Hsiung , TOEBES, John, A.
CPC分类号： H03M7/40 , H04N19/61 , H04N19/91 , H04N19/93
摘要： Coding quantized transform coefficients as occur in image compression includes, for a subset of coefficient amplitude values coding by a first method corresponding to each amplitude of the subset, events of a run of zero or more zero-valued coefficients ending in the single non-zero amplitude, coding by a second method events of a run of zero or more zero-valued coefficients ending in any single non-zero amplitude not in the subset, and coding by a third method the amplitude values of the concatenation of the non-zero amplitude not in the subset. The coding methods produce variable length codewords. The method is suitable for series that have scattered non-zero-valued coefficients.
摘要翻译：在图像压缩中发生的编码量化变换系数包括对于与子集的每个幅度相对应的第一种方法进行编码的系数幅度值子集的子集，零个或多个零值系数的运行结束于单个非零振幅，通过第二种方法对不在子集中的任何单个非零幅度结束的零个或多个零值系数的运行的事件进行编码，并且通过第三种方法编码非零幅度的级联的振幅值不在子集中。编码方法产生可变长度码字。该方法适用于具有分散非零值系数的系列。

2. 发明申请

WO2006001994A2 HYBRID VARIABLE LENGTH CODING FOR VIDEO COMPRESSION 审中-公开
标题翻译：混合可变长度编码视频压缩
公开(公告)号：WO2006001994A2
公开(公告)日：2006-01-05
申请号：PCT/US2005/020110
申请日：2005-06-08
申请人： CISCO TECHNOLOGY, INC. , CHEN, Wen-Hsiung , WU, Fang , PELTON, Gregory, D. , TOEBES, John, A. , ROSENFELD, Dov
发明人： CHEN, Wen-Hsiung , WU, Fang , PELTON, Gregory, D. , TOEBES, John, A. , ROSENFELD, Dov
IPC分类号： G06K9/36 , H03M7/34
CPC分类号： H03M7/40 , H04N19/91 , H04N19/93
摘要： A method for variable length coding an ordered series of digital signals, e.g., of quantized transform coefficients of a block of image data with a most likely-to-occur amplitude, e.g., 0, and at least one other amplitude, e.g., 1, to form a set of codewords. The method includes establishing a breakpoint along the ordering to define a first contiguous region and a second contiguous region, such that clusters of consecutive signals of any value other than the most likely-to-occur value occur mostly in the first contiguous region. The method includes encoding the signals in the first region using a first region encoding method suitable for encoding clusters; and encoding the signals in the second region using a second region encoding method. The first region and second region encoding methods include variable length codes such that relatively short codewords are formed to represent relatively more likely-to-occur sequences.
摘要翻译：一种用于可变长度编码有序序列数字信号的方法，例如，具有最可能发生的幅度的图像数据块的量化变换系数，例如0和至少一个其它振幅，例如1，以形成一组码字。该方法包括沿着排序建立断点以定义第一连续区域和第二连续区域，使得除了最可能出现的值之外的任何值的连续信号的群集主要出现在第一邻接区域中。该方法包括使用适于编码簇的第一区域编码方法对第一区域中的信号进行编码; 以及使用第二区域编码方法对所述第二区域中的信号进行编码。第一区域和第二区域编码方法包括可变长度代码，使得形成相对较短的码字以表示相对更可能发生的序列。

3. 发明申请

WO2011043970A1 LOCALLY VARIABLE QUANTIZATION AND HYBRID VARIABLE LENGTH CODING FOR IMAGE AND VIDEO COMPRESSION 审中-公开
标题翻译：用于图像和视频压缩的局部可变量化和混合可变长度编码
公开(公告)号：WO2011043970A1
公开(公告)日：2011-04-14
申请号：PCT/US2010/050720
申请日：2010-09-29
申请人： CISCO TECHNOLOGY, INC. , LI, Junlin , TIAN, Dihong , CHEN, Wen-Hsiung , XU, Yian
发明人： LI, Junlin , TIAN, Dihong , CHEN, Wen-Hsiung , XU, Yian
IPC分类号： H04N7/26 , H04N7/30 , H03M7/40
CPC分类号： H03M7/40 , H04N19/126 , H04N19/13 , H04N19/132 , H04N19/147 , H04N19/18 , H04N19/19 , H04N19/60 , H04N19/93
摘要： A coding method, apparatus, and storage media with instructions to carry out a method. The method operates on an ordered series of transform coefficients of a block of image data, and for a fixed quantization method, and includes quantizing and encoding the ordered series to form a coded bitstream. The quantizing and encoding uses one or more variable length code (VLC) mappings. The quantizing includes quantizing to have amplitude- 1 at least one coefficient that would be quantized by the fixed quantization method to have zero amplitude, quantizing to have zero amplitude at least one coefficient that would be quantized by the fixed quantization method to have amplitude- 1, and using the fixed quantization method to quantize any coefficient that is quantized by the fixed quantization method not to have zero amplitude, amplitude- 1, or amplitude- 2.
摘要翻译：一种具有执行方法的指令的编码方法，装置和存储介质。该方法对图像数据块的有序序列变换系数和固定量化方法进行操作，并且包括量化和编码有序序列以形成编码比特流。量化和编码使用一个或多个可变长度码（VLC）映射。量化包括量化具有将通过固定量化方法量化的振幅-1至少一个系数以具有零幅度，量化具有将通过固定量化方法量化的至少一个系数的零幅度以具有幅度1 并且使用固定量化方法来量化由固定量化方法量化的不具有零幅度，幅度-1或幅度2的任何系数。

4. 发明申请

WO2009114696A1 INFORMATION INSERTION IN A COMPRESSED VIDEO BITSTREAM 审中-公开
标题翻译：信息插入压缩视频比特
公开(公告)号：WO2009114696A1
公开(公告)日：2009-09-17
申请号：PCT/US2009/036967
申请日：2009-03-12
申请人： CISCO TECHNOLOGY, INC. , CHENG, Gary Fujen , CHEN, Wen-Hsiung , PEREIRA, Michael
发明人： CHENG, Gary Fujen , CHEN, Wen-Hsiung , PEREIRA, Michael
IPC分类号： H04N7/26
CPC分类号： H04N19/48 , G06Q30/02 , H04N21/2343 , H04N21/235 , H04N21/435
摘要： Particular embodiments generally relate to video insertion information insertion in a compressed bitstream. In one embodiment, a compressed bitstream of data is received. Video insertion information to be added to the bitstream is then determined. One or more macrob locks out of a plurality of macrob locks are determined in the compressed bitstream. The macroblocks are determined in the compressed domain and not the spatial domain. Information is selectively inserted for the video insertion information for the determined one or more macroblocks in the compressed bitstream. For example, encoded macroblocks for the video insertion information may replace the determined one or more macroblocks. Also, the one or more macroblocks may be decoded and information for the video insertion information is added to the decoded one or more macroblocks, and then the one or more macroblocks are re-encoded with the information. The re-encoded macroblocks may then replace the determined one or more macroblocks in the compressed bitstream.
摘要翻译：具体实施例通常涉及在压缩比特流中插入视频插入信息。在一个实施例中，接收压缩的数据比特流。然后确定要添加到比特流的视频插入信息。在压缩比特流中确定多个宏块中的一个或多个宏块。在压缩域中确定宏块，而不是空间域。针对所确定的压缩比特流中的一个或多个宏块的视频插入信息选择性地插入信息。例如，用于视频插入信息的编码宏块可以替代所确定的一个或多个宏块。此外，一个或多个宏块可以被解码，并且用于视频插入信息的信息被添加到解码的一个或多个宏块，然后一个或多个宏块被重新编码。再编码的宏块然后可以替换所确定的压缩比特流中的一个或多个宏块。

5. 发明申请

WO2009117308A2 VIDEO COMPRESSION USING SEARCH TECHNIQUES OF LONG-TERM REFERENCE MEMORY 审中-公开
标题翻译：利用长期参考记忆搜索技术进行视频压缩
公开(公告)号：WO2009117308A2
公开(公告)日：2009-09-24
申请号：PCT/US2009/036966
申请日：2009-03-12
申请人： CISCO TECHNOLOGY, INC. , MAUCHLY, William , FRIEL, Joseph, T. , MACDONALD, Alan , TIAN, Dihong , CHEN, Wen-Hsiung , ARNAO, Michael, A.
发明人： MAUCHLY, William , FRIEL, Joseph, T. , MACDONALD, Alan , TIAN, Dihong , CHEN, Wen-Hsiung , ARNAO, Michael, A.
IPC分类号： H04N7/26 , H04N7/36 , H04N7/50 , G06F17/30
CPC分类号： H04N7/367 , G06F17/30781 , G06T7/246 , G06T2207/10016 , G06T2207/30196 , H04N19/17 , H04N19/176 , H04N19/46 , H04N19/58 , H04N19/61
摘要： Particular embodiments generally relate to video compression. In one embodiment, a store of reference frames is provided in memory. The reference frames may be classified based on a plurality of classifiers. The classifiers may correspond to features that are found in the reference frame. A frame to encode is then received. The frame is analyzed to determine features found in the frame. As macroblocks in the frame are encoded, a macroblock is analyzed to determine which feature may be included in the macroblock. The feature is used to determine a classifier, which is used to determine a subset of the reference frames. The subset is then searched to determine a reference frame for the macroblock.
摘要翻译：特定实施例一般涉及视频压缩。在一个实施例中，参考帧的存储被提供在存储器中。参考帧可以基于多个分类器进行分类。分类器可以对应于在参考框架中找到的特征。然后接收要编码的帧。分析框架以确定框架中的特征。当帧中的宏块被编码时，宏块被分析以确定哪个特征可以被包括在宏块中。该特征用于确定分类器，该分类器用于确定参考帧的子集。然后搜索该子集以确定该宏块的参考帧。

6. 发明申请

WO2009102503A3 ADAPTIVE QUANTIZATION FOR UNIFORM QUALITY IN PANORAMIC VIDEOCONFERENCING 审中-公开
公开(公告)号：WO2009102503A3
公开(公告)日：2009-08-20
申请号：PCT/US2009/001070
申请日：2009-02-16
申请人： CISCO TECHNOLOGY, INC. , CHEN, Wen-Hsiung , BUCKINGHAM, Patrik , PRASAD, Chandrodaya , MIRIYALA, Prasad
发明人： CHEN, Wen-Hsiung , BUCKINGHAM, Patrik , PRASAD, Chandrodaya , MIRIYALA, Prasad
IPC分类号： H04N7/15 , H04N7/14
摘要： Systems and methods for image processing, comprising receiving a video frame, coding a first portion of the video frame at a different quality than a second portion of the video frame, based on an optical property, and displaying the video frame.

7. 发明申请

WO2012068485A1 SYSTEM AND METHOD FOR SKIPPING VIDEO CODING IN A NETWORK ENVIRONMENT 审中-公开
标题翻译：用于在网络环境中移动视频编码的系统和方法
公开(公告)号：WO2012068485A1
公开(公告)日：2012-05-24
申请号：PCT/US2011/061442
申请日：2011-11-18
申请人： CISCO TECHNOLOGY, INC. , MACKIE, David J. , TIAN, Dihong , WEIR, Andrew P. , BUTTIMER, Maurice , FRIEL, Joseph T. , MAUCHLY, J. William , CHEN, Wen-Hsiung
发明人： MACKIE, David J. , TIAN, Dihong , WEIR, Andrew P. , BUTTIMER, Maurice , FRIEL, Joseph T. , MAUCHLY, J. William , CHEN, Wen-Hsiung
IPC分类号： H04N7/15
CPC分类号： H04N7/15 , H04N7/142
摘要： A method is provided in one example and includes receiving a video input from a camera element; using change detection statistics to identify background image data; using the background image data as a temporal reference to determine foreground image data of a particular video frame within the video input; using a selected foreground image for a background registration of a subsequent video frame; and providing at least a portion of the subsequent video frame to a next destination.
摘要翻译：在一个示例中提供了一种方法，并且包括从相机元件接收视频输入; 使用变化检测统计来识别背景图像数据; 使用背景图像数据作为时间参考来确定视频输入内的特定视频帧的前景图像数据; 使用所选择的前景图像来进行后续视频帧的背景注册; 以及将后续视频帧的至少一部分提供给下一个目的地。

8. 发明申请

WO2008118887A3 REAL-TIME FACE DETECTION 审中-公开
标题翻译：实时脸部检测
公开(公告)号：WO2008118887A3
公开(公告)日：2008-10-02
申请号：PCT/US2008/058079
申请日：2008-03-25
申请人： CISCO TECHNOLOGY, INC. , TIAN, Dihong , FRIEL, Joseph, T. , MAUCHLY, William, J. , CHEN, Wen-Hsiung
发明人： TIAN, Dihong , FRIEL, Joseph, T. , MAUCHLY, William, J. , CHEN, Wen-Hsiung
IPC分类号： H04N7/26 , H04N7/36
摘要： An apparatus, a method, and a computer-readable medium having instructions encoded thereon that when executed cause a method to be carried out. The method includes dividing at least a portion of a picture of a video stream into parts of blocks, and processing the parts in parallel by a plurality of interconnected processors. The processing of a respective part by its respective processor includes determining block- features, e.g., block level temporal features and/or block level edge features. Each processor also performs coding functions on its respective part of the picture. The method also includes block-level processing using the block-level features to determine which blocks in the picture are likely to be that of a face, the block-level processing being at the granularity of at least a block.
摘要翻译：具有在其上编码的指令的装置，方法和计算机可读介质，所述指令在被执行时导致执行方法。该方法包括将视频流的图片的至少一部分划分成块的部分，并且通过多个互连的处理器并行处理这些部分。各个处理器对各部分的处理包括确定块特征，例如块级时间特征和/或块级边特征。每个处理器还在其相应的图片部分上执行编码功能。该方法还包括使用块级特征来确定图片中哪些块可能是面部块的处理的块级处理，块级处理处于至少一个块的粒度。

9. 发明授权

EP1782337B1 HYBRID VARIABLE LENGTH CODING FOR VIDEO COMPRESSION 失效
标题翻译：混合编码可变长度视频压缩
公开(公告)号：EP1782337B1
公开(公告)日：2015-08-12
申请号：EP05759253.7
申请日：2005-06-08
申请人： Cisco Technology, Inc.
发明人： CHEN, Wen-Hsiung , WU, Fang , PELTON, Gregory, D. , TOEBES, John, A. , ROSENFELD, Dov
IPC分类号： H04N19/91 , H04N19/93 , H03M7/40
CPC分类号： H03M7/40 , H04N19/91 , H04N19/93

10. 发明公开

EP2486729A1 LOCALLY VARIABLE QUANTIZATION AND HYBRID VARIABLE LENGTH CODING FOR IMAGE AND VIDEO COMPRESSION 有权转让
标题翻译：局部变量进行量化及混合可变长度编码图像和视频压缩
公开(公告)号：EP2486729A1
公开(公告)日：2012-08-15
申请号：EP10763558.3
申请日：2010-09-29
申请人： Cisco Technology, Inc.
发明人： LI, Junlin , TIAN, Dihong , CHEN, Wen-Hsiung , XU, Yian
IPC分类号： H04N7/26 , H04N7/30 , H03M7/40
摘要： A coding method, apparatus, and storage media with instructions to carry out a method. The method operates on an ordered series of transform coefficients of a block of image data, and for a fixed quantization method, and includes quantizing and encoding the ordered series to form a coded bitstream. The quantizing and encoding uses one or more variable length code (VLC) mappings. The quantizing includes quantizing to have amplitude-1 at least one coefficient that would be quantized by the fixed quantization method to have zero amplitude, quantizing to have zero amplitude at least one coefficient that would be quantized by the fixed quantization method to have amplitude-1, and using the fixed quantization method to quantize any coefficient that is quantized by the fixed quantization method not to have zero amplitude, amplitude-1, or amplitude-2.

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