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1. 发明申请

US20070019877A1 Variable length coding for clustered transform coefficients in video compression 有权
标题翻译：视频压缩中聚类变换系数的可变长度编码
公开(公告)号：US20070019877A1
公开(公告)日：2007-01-25
申请号：US11385183
申请日：2006-03-20
申请人： Wen-hsiung Chen , Fang Wu , John Toebes , Dov Rosenfeld , Gregory Pelton
发明人： Wen-hsiung Chen , Fang Wu , John Toebes , Dov Rosenfeld , Gregory Pelton
IPC分类号： G06K9/36
CPC分类号： H04N19/93 , H04N19/13 , H04N19/14 , H04N19/146 , H04N19/159 , H04N19/17 , H04N19/18 , H04N19/48 , H04N19/91
摘要： Coding quantized transform coefficients as occur in image compression combines a position identifying method to identify the relative position of clusters of consecutive non-zero-valued coefficients, an amplitude event identifying method to identify amplitude events in the clusters of non-zero-valued coefficients, and a coding method to code the position events, amplitude events, and signs of the amplitudes in the clusters. The method is particularly applicable to a series of quantized transform coefficients where clusters are likely to occur.
摘要翻译：在图像压缩中发生的编码量化变换系数组合了一种位置识别方法来识别连续非零值系数的簇的相对位置，用于识别非零值系数的簇中的幅度事件的幅度事件识别方法，以及编码方法，用于对簇中的幅度的位置事件，振幅事件和符号进行编码。该方法特别适用于可能发生簇的一系列量化变换系数。

2. 发明申请

US20050276498A1 Video compression using multiple variable length coding processes for multiple classes of transform coefficient blocks 有权
标题翻译：使用多种变换系数块的多个可变长度编码处理的视频压缩
公开(公告)号：US20050276498A1
公开(公告)日：2005-12-15
申请号：US10910712
申请日：2004-08-03
申请人： Wen-hsiung Chen , Fang Wu , Gregory Pelton , John Toebes
发明人： Wen-hsiung Chen , Fang Wu , Gregory Pelton , John Toebes
IPC分类号： G06K9/36 , H03M7/34 , H04N7/26
CPC分类号： H04N19/136 , H04N19/12 , H04N19/13 , H04N19/147
摘要： A method and apparatus to variable length code an ordered series of quantized transform coefficients of an image block. The method classifies the series into one of a plurality of classes. Each class has a corresponding coding process that is applicable to the statistical distribution of the coefficients in the series. The series is coded according to the particular corresponding coding process of the class of the classifying.
摘要翻译：一种可变长度码的图像块的有序序列的量化变换系数的方法和装置。该方法将该系列分类为多个类中的一个。每个类都有相应的编码过程，适用于系列中系数的统计分布。该系列根据分类类别的特定对应编码过程进行编码。

3. 发明申请

US20050276497A1 Extended hybrid variable length coding method for low bit rate video coding 有权
标题翻译：用于低比特率视频编码的扩展混合可变长度编码方法
公开(公告)号：US20050276497A1
公开(公告)日：2005-12-15
申请号：US10898654
申请日：2004-07-22
申请人： Wen-hsiung Chen , Fang Wu , Gregory Pelton , John Toebes
发明人： Wen-hsiung Chen , Fang Wu , Gregory Pelton , John Toebes
IPC分类号： G06K9/36 , H03M7/34 , H04N7/26
CPC分类号： H04N19/136 , H04N19/91
摘要： A method and an apparatus of image compression, and a memory to store a data structure for compression. The method includes, for an ordered series of quantized coefficients of a transform of an image block, forming from the series events that are a run of non-zero-valued coefficients in a first contiguous region defined by a breakpoint, a run of zero-valued coefficients in the first region, or a run of zero-valued coefficients that ends in a non-zero-amplitude coefficient in a second region defined by the breakpoint. A codeword is formed for each runlength of non-zero-valued and zero-valued coefficients in the first region using a first- and a second coding method, respectively, and, and encoding the runs of zero-valued coefficient that end in a non-zero value in the second region according to a third coding method, including providing an exception codeword when the ending amplitude is not 1.
摘要翻译：图像压缩的方法和装置，以及存储用于压缩的数据结构的存储器。该方法包括对于图像块的变换的有序序列的量化系数，从由断点定义的第一连续区域中的非零值系数的一系列事件形成，或在由断点定义的第二区域中以非零幅度系数结束的零值系数的运行。使用第一和第二编码方法分别为第一区域中的非零值和零值系数的每个游程长度形成码字，并且编码以非零值和零值系数结束的零值系数的运行，根据第三编码方法在第二区域中的零值，包括当结束幅度不为1时提供异常码字。

4. 发明申请

US20050276487A1 Hybrid variable length coding method for low bit rate video coding 有权
标题翻译：用于低比特率视频编码的混合可变长度编码方法
公开(公告)号：US20050276487A1
公开(公告)日：2005-12-15
申请号：US10869229
申请日：2004-06-15
申请人： Wen-hsiung Chen , Fang Wu , Gregory Pelton , John Toebes
发明人： Wen-hsiung Chen , Fang Wu , Gregory Pelton , John Toebes
IPC分类号： G06K9/36 , H03M7/34 , H04N7/26
CPC分类号： H04N19/136 , H04N19/91
摘要： A method and an apparatus of image compression, and a memory to store a data structure for compression. The method includes, for an ordered series of quantized coefficients of a transform of an image block, forming events from the series of quantized transform coefficients, each event being a run of non-zero-valued coefficients in a first contiguous region defined by a breakpoint, a run of zero-valued coefficients in the first region, or a run of zero-valued coefficients in a second region defined by the breakpoint, the breakpoint defining the first region and a second continuous region in the series following the first region. The method further includes forming a codeword for each runlength of non-zero-valued coefficients in the first region, the forming a codeword according to a first coding method, forming a codeword for each runlength of zero-valued coefficients in the first region, the forming a codeword according to a second coding method, and encoding the coefficient values in the second region according to a third coding method, the third coding method including identifying runs of zero-valued coefficients in the second region. Relatively short codewords are formed to represent runlengths that are relatively more likely to occur, and relatively long codewords are formed to represent runlengths that are relatively less likely to occur.
摘要翻译：图像压缩的方法和装置，以及存储用于压缩的数据结构的存储器。该方法包括对于图像块的变换的有序序列的量化系数，从一系列量化变换系数中形成事件，每个事件是由断点定义的第一连续区域中的非零值系数的运行，第一区域中的零值系数的运行，或由断点定义的第二区域中的零值系数的运行，限定第一区域的断点和在第一区域之后的串联中的第二连续区域。该方法还包括为第一区域中的非零值系数的每个游程长度形成码字，根据第一编码方法形成码字，为第一区域中零值系数的每个游程长度形成码字，根据第二编码方法形成码字，并且根据第三编码方法对第二区域中的系数值进行编码，第三编码方法包括识别第二区域中零值系数的运行。形成相对短的码字来表示相对更可能发生的游程长度，并且形成相对长的码字来表示相对不太可能发生的游程长度。

5. 发明申请

US20060039616A1 Amplitude coding for clustered transform coefficients 有权
标题翻译：聚类变换系数的幅度编码
公开(公告)号：US20060039616A1
公开(公告)日：2006-02-23
申请号：US11069622
申请日：2005-02-28
申请人： Wen-hsiung Chen , Fang Wu , Gregory Pelton
发明人： Wen-hsiung Chen , Fang Wu , Gregory Pelton
IPC分类号： G06K9/36
CPC分类号： H04N19/93 , H04N19/60 , H04N19/91
摘要： A method, apparatus, and carrier medium to encode a series of quantized transform coefficients. The method includes identifying runs of one or more non-zero-valued coefficients, and for each such run, identifying events of a run of one or more amplitude-1 coefficients followed by a single coefficient of amplitude greater than 1. The method further includes encoding the identified event with a codeword that for at least some events, relatively more likely-to-occur events are encoded by a shorter codeword than relatively less likely-to-occur events. Each identified event is encoded according to the length of the consecutive amplitude-1 coefficients and the amplitude of the ending coefficient. The method is such that relatively short codewords are formed to represent values or sequences of values that are relatively more likely-to-occur, and relatively long codewords are formed to represent values or sequences of values that are relatively less likely-to-occur. The method is applicable to encoding a region in the series where there is likely to be a cluster of non-zero-valued coefficients.
摘要翻译：一种用于对一系列量化变换系数进行编码的方法，装置和载体介质。该方法包括识别一个或多个非零值系数的运行，并且对于每个这样的运行，识别一个或多个幅度-1系数的运行的事件，随后是大于1的单个幅度系数。该方法还包括用针对至少一些事件的相对更易于发生的事件的码字对所标识的事件进行编码，由比较不太可能发生的事件更短的码字进行编码。每个识别的事件根据连续幅度-1系数的长度和结束系数的幅度进行编码。该方法使得形成相对短的码字以表示相对更可能发生的值的值或序列，并且形成相对长的码字以表示相对较不可能发生的值的值或序列。该方法适用于对可能存在非零值系数的簇的系列中的区域进行编码。

6. 发明申请

US20070133890A1 EXTENSION OF TWO-DIMENSIONAL VARIABLE LENGTH CODING FOR IMAGE COMPRESSION 有权
标题翻译：用于图像压缩的两维可变长度编码的扩展
公开(公告)号：US20070133890A1
公开(公告)日：2007-06-14
申请号：US11675566
申请日：2007-02-15
申请人： Wen-hsiung Chen , Fang Wu , Gregory Pelton
发明人： Wen-hsiung Chen , Fang Wu , Gregory Pelton
IPC分类号： G06K9/36
CPC分类号： H04N19/93 , H04N19/60 , H04N19/90 , H04N19/91
摘要： A method and an apparatus to decode a bitstream that includes codewords formed by a method of encoding series of quantized coefficients of a transform of a block of image data. The encoding method includes forming events from the series of quantized transform coefficients, each event being a run of none or more zero-valued coefficients followed by a run of one of a predefined set of sequences, each sequence in the set being either a single coefficient of amplitude greater than one, or a sequence of 1's and 0's starting with a coefficient of amplitude 1. The encoding method includes forming a codeword for each formed event. The decoding includes decoding recognized events until all the coefficients in a series of quantized transform coefficients is formed.
摘要翻译：一种用于对比特流进行解码的方法和装置，其包括由图像数据块的变换的一系列量化系数的编码方法形成的码字。编码方法包括从一系列量化变换系数中形成事件，每个事件是一个或多个零值系数的运行，随后运行一组预定义的序列，集合中的每个序列都是单个系数幅度大于1，或以幅度1的系数开始的1和0的序列。编码方法包括为每个形成的事件形成码字。解码包括解码识别的事件，直到形成一系列量化变换系数中的所有系数。

7. 发明申请

US20070104381A1 VARIABLE LENGTH CODING METHOD AND APPARATUS FOR VIDEO COMPRESSION 有权
标题翻译：可变长度编码方法和视频压缩设备
公开(公告)号：US20070104381A1
公开(公告)日：2007-05-10
申请号：US11620167
申请日：2007-01-05
申请人： Wen-hsiung Chen , Fang Wu , Gregory Pelton
发明人： Wen-hsiung Chen , Fang Wu , Gregory Pelton
IPC分类号： G06K9/36
CPC分类号： H03M7/40 , H04N19/13 , H04N19/60 , H04N19/61 , H04N19/91 , H04N19/93
摘要： A method and an apparatus to encode a series of quantized coefficients of a transform of a block of image data. The method includes forming modes for each encountered non-zero amplitude and forming events for the modes in the mode-modified series formed by setting to zero all non-zero amplitudes other than the amplitude defining the mode. An event for modes for amplitudes greater than 1 is a run of none or more zero-valued coefficients followed a non-zero amplitude in the mode-modified series. A first mode is defined for amplitude 1 wherein an event is a run of none or more zero-valued coefficients followed the amplitude 1 coefficient in the mode-modified series. In another embodiment, a first mode is defined for amplitude 1 wherein an event is a run in the mode-modified series of none or more zero-valued coefficients followed by a run of one of a predefined set of sequences, each sequence in the set being a sequence of l's and 0's starting with a coefficient of amplitude 1.
摘要翻译：一种用于编码图像数据块的变换的一系列量化系数的方法和装置。该方法包括：通过将除了定义该模式的振幅之外的所有非零幅度设置为零而形成的模式修正系列中的模式，为每个遇到的非零幅度形成模式和形成事件。振幅大于1的模式的事件是在模式修改的序列中，非零幅度之后没有或多个零值系数的运行。对于振幅1定义第一模式，其中事件是在模式修改的序列中的幅度1系数之后没有或更多个零值系数的运行。在另一个实施例中，为振幅1定义第一模式，其中事件是模式修改的系列中的一个或多个零值系数的运行，随后运行预定义的一组序列，集合中的每个序列作为1和1的序列，以幅度1的系数开始。

8. 发明申请

US20070165724A1 EXTENSION OF TWO-DIMENSIONAL VARIABLE LENGTH CODING FOR IMAGE COMPRESSION 有权
标题翻译：用于图像压缩的两维可变长度编码的扩展
公开(公告)号：US20070165724A1
公开(公告)日：2007-07-19
申请号：US11689360
申请日：2007-03-21
申请人： Wen-hsiung Chen , Fang Wu , Gregory Pelton
发明人： Wen-hsiung Chen , Fang Wu , Gregory Pelton
IPC分类号： H04N11/02
CPC分类号： H04N19/93 , H04N19/60 , H04N19/90 , H04N19/91
摘要： A method and an apparatus to encode a series of quantized coefficients of a transform of a block of image data. The transform is such that 0 is the most likely coefficient amplitude and 1 is the next most likely coefficient amplitude. The method includes forming symbols (called events) from the series of quantized transform coefficients. An event is a run of none or more zero-valued coefficients followed by a run of one of a predefined set of sequences, each sequence in the set being either a single coefficient of amplitude greater than one, or a sequence of 1's and 0's starting with a coefficient of amplitude 1. The method includes forming a codeword for each formed event. Relatively short codewords are formed to represent events that are relatively more likely to occur, and relatively long codewords are formed to represent events that are relatively less likely to occur. In one implementation, each event is a run of none or more zero-valued coefficients followed by one of a predefined set of sequences, each sequence in the set being either a single coefficient of amplitude greater than one, or a sequence of l's and 0's starting with a coefficient of amplitude 1. In another implementation, an event is a run of none or more zero-valued coefficients followed by a run of one or more non-zero-amplitude coefficients. In a variation, The events include runs of none or more zero-valued coefficients followed by a subset of all possible runlengths of non-zero-amplitude coefficients. In one implementation, the subset includes no runs of length 2 or more of coefficients of amplitude 3 or more.
摘要翻译：一种用于编码图像数据块的变换的一系列量化系数的方法和装置。该变换使得0是最可能的系数幅度，1是下一个最可能的系数幅度。该方法包括从一系列量化变换系数中形成符号（称为事件）。一个事件是一个没有或更多的零值系数的运行，随后运行预定义的一组序列，集合中的每个序列是大于1的单个幅度系数或1和0的序列开始具有幅度系数1.该方法包括为每个形成的事件形成码字。相对短的码字被形成以表示相对更可能发生的事件，并且形成相对长的码字来表示相对较不可能发生的事件。在一个实施方案中，每个事件是一个或多个零值系数的运行，随后是预定义的一组序列中的一个，集合中的每个序列是单个幅度大于1的序列，或者是1和1的序列以振幅系数1开始。在另一个实现中，事件是一个或多个零值系数的运行，随后是一个或多个非零幅度系数的运行。在一个变化中，事件包括没有或更多的零值系数的运行，后跟非零幅度系数的所有可能的游程长度的子集。在一个实现中，该子集不包括幅度为3或更大的系数的长度为2或更多的行。

9. 发明申请

US20060088092A1 Method and apparatus of controlling a plurality of video surveillance cameras 有权
标题翻译：控制多个视频监控摄像机的方法和装置
公开(公告)号：US20060088092A1
公开(公告)日：2006-04-27
申请号：US10970129
申请日：2004-10-21
申请人： Wen-hsiung Chen , Fang Wu , Philip Graham , Gregory Pelton , Blane Eisenberg
发明人： Wen-hsiung Chen , Fang Wu , Philip Graham , Gregory Pelton , Blane Eisenberg
IPC分类号： H04N11/04 , H04N7/18 , H04N11/02 , H04N7/12 , H04B1/66
CPC分类号： H04N19/115 , G08B13/19656 , G08B13/19667 , H04N7/181 , H04N7/185 , H04N19/14 , H04N19/179 , H04N19/40 , H04N19/61
摘要： An apparatus, a method, and a software product to control a plurality of surveillance video camera/encoder combinations. The method includes receiving a plurality of encoded video streams from a respective surveillance camera/encoder combination, and accepting a measure of the level of activity for each encoded video stream. Each measure is obtained from the output of the camera of the corresponding camera/encoder combination. The method further includes assigning output bit rates for each encoded stream according to the accepted level of activity such that a maximum overall bit rate is not exceeded. One version is for controlling camera/encoder combinations that accept remote bit rate control, and a second is for controlling camera/encoder combinations that send at a pre-set bit rate. One version includes a network connection between the camera/encoder combinations, and the method or apparatus for central control.
摘要翻译：一种用于控制多个监视摄像机/编码器组合的装置，方法和软件产品。该方法包括从相应的监视摄像机/编码器组合接收多个编码视频流，并且接受每个编码视频流的活动级别的度量。每个测量都是从相应的相机/编码器组合的相机的输出中获得的。该方法还包括根据接受的活动级别为每个编码流分配输出比特率，使得不超过最大总比特率。一个版本用于控制接受远程比特率控制的摄像机/编码器组合，第二个是用于控制以预设比特率发送的摄像机/编码器组合。一个版本包括相机/编码器组合之间的网络连接以及用于中央控制的方法或装置。

10. 发明申请

US20060039615A1 Joint amplitude and position coding for photographic image and video coding 有权
公开(公告)号：US20060039615A1
公开(公告)日：2006-02-23
申请号：US11069621
申请日：2005-02-28
申请人： Wen-hsiung Chen , Fang Wu , Gregory Pelton
发明人： Wen-hsiung Chen , Fang Wu , Gregory Pelton
IPC分类号： G06K9/36
CPC分类号： H04N19/93 , H04N19/60 , H04N19/91
摘要： A method, apparatus, and carrier medium to encode a series of quantized transform coefficients. The method includes identifying clusters of at least one non-zero-valued coefficients, and for each such cluster, identifying at least one position event that defines the relative position and runlength of the cluster of non-zero coefficients and any intervening run of zero-valued coefficients, and identifying at least one amplitude event to define the amplitudes of the non-zero-valued coefficients in the identified cluster. The method further includes jointly encoding the identified position event or events with the identified amplitude event or events such that relatively short codewords are formed to represent values or sequences of values that are relatively more likely-to-occur, and relatively long codewords are formed to represent values or sequences of values that are relatively less likely-to-occur. The method is applicable to encoding a region in the series where there is likely to be a cluster of non-zero-valued coefficients.

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