公开(公告)号：US20090086815A1

公开(公告)日：2009-04-02

申请号：US12016441

申请日：2008-01-18

申请人： Dihong Tian ,  Wen-hsiung Chen ,  Pi Sheng Chang

发明人： Dihong Tian ,  Wen-hsiung Chen ,  Pi Sheng Chang

IPC分类号： H04N7/12

CPC分类号： H04N19/124 ,  H04N19/13 ,  H04N19/167 ,  H04N19/176 ,  H04N19/196 ,  H04N19/60

摘要： A coding method, apparatus, and medium with software encoded thereon to implement a coding method. The coding method includes encoding the position of non-zero-valued coefficients in an ordered series of quantized transform coefficients of a block of image data, including encoding events using variable length coding using a plurality of variable length code mappings that each maps events to codewords, the position encoding including switching between the code mappings based on the context. The coding method further includes encoding amplitudes of the non-zero-valued coefficients using variable dimensional amplitude coding in the reverse order of the original ordering of the series.

摘要翻译： 一种编码方法，装置和介质，其上编码有软件以实现编码方法。 编码方法包括编码图像数据块的有序序列量化变换系数中的非零值系数的位置，包括使用可变长度编码的编码事件，该多个可变长度编码映射将事件映射到码字 ，位置编码包括基于上下文的代码映射之间的切换。 编码方法还包括使用可变维度幅度编码以与序列的原始顺序相反的顺序来编码非零值系数的幅度。

公开(公告)号：US20080181299A1

公开(公告)日：2008-07-31

申请号：US11686898

申请日：2007-03-15

申请人： Dihong Tian ,  Wen-hsiung Chen ,  Pi Sheng Chang ,  John A. Toebes

发明人： Dihong Tian ,  Wen-hsiung Chen ,  Pi Sheng Chang ,  John A. Toebes

IPC分类号： H04N11/04

CPC分类号： H04N19/18 ,  H04N19/13 ,  H04N19/132 ,  H04N19/157

摘要： A method, and apparatus, and logic encoded in one or more computer-readable tangible medium to carry out a method. The method is to code an ordered sequence of quantized transform coefficients of a block of image data using a hybrid coding method that includes determining a breakpoint location in the sequence between a low-frequency region and a high-frequency region; coding the low-frequency region using a selected low-frequency variable length coding method; coding the high-frequency region using a selected high-frequency variable length coding method; and coding the location of the breakpoint. The breakpoint location is determined as a function of properties of neighboring blocks such that little if any information needs to be sent to a decoder about the breakpoint of a block or multi-block partition, and the decoder can use the properties of neighboring blocks to determine the breakpoint used to code a to-be-decoded sequence or sequences of a block or a multi-block partition.

摘要翻译： 在一个或多个计算机可读有形介质中编码的方法和装置以及逻辑，以执行方法。 该方法是使用包括确定低频区域和高频区域之间的序列中的断点位置的混合编码方法来对图像数据块的量化变换系数的有序序列进行编码; 使用选择的低频可变长度编码方法对低频区域进行编码; 使用选择的高频可变长度编码方法对高频区域进行编码; 并编码断点的位置。 断点位置被确定为相邻块的属性的函数，使得如果任何信息需要关于块或多块分区的断点发送到解码器很少，并且解码器可以使用相邻块的属性来确定 用于对要解码的序列或块或多块分区的序列进行编码的断点。

公开(公告)号：US20080170625A1

公开(公告)日：2008-07-17

申请号：US11686778

申请日：2007-03-15

申请人： Dihong Tian ,  Pi Sheng Chang ,  Wen-hsiung Chen

发明人： Dihong Tian ,  Pi Sheng Chang ,  Wen-hsiung Chen

IPC分类号： H04B1/66

CPC分类号： H04N19/18 ,  H04N19/13 ,  H04N19/132 ,  H04N19/157

摘要： A method, and apparatus, and logic encoded in one or more computer-readable tangible medium to carry out a method. The method is to code an ordered sequence of quantized transform coefficients of a block of image data using a hybrid coding method that includes determining a breakpoint location in the sequence between a low frequency region and a high frequency region; coding the low-frequency region using a selected low-frequency variable length coding method; coding the high-frequency region using a selected high-frequency variable length coding method; and coding the location of the breakpoint. The breakpoint location is determined as a function of the sequence such that different sequences can have different breakpoints.

摘要翻译： 在一个或多个计算机可读有形介质中编码的方法和装置以及逻辑，以执行方法。 该方法是使用包括确定低频区域和高频区域之间的序列中的断点位置的混合编码方法来对图像数据块的量化变换系数的有序序列进行编码; 使用选择的低频可变长度编码方法对低频区域进行编码; 使用选择的高频可变长度编码方法对高频区域进行编码; 并编码断点的位置。 断点位置被确定为序列的函数，使得不同的序列可以具有不同的断点。

公开(公告)号：US08576915B2

公开(公告)日：2013-11-05

申请号：US13426189

申请日：2012-03-21

申请人： Dihong Tian ,  Wen-hsiung Chen ,  Pi Sheng Chang

发明人： Dihong Tian ,  Wen-hsiung Chen ,  Pi Sheng Chang

IPC分类号： H04N7/26 ,  H04N11/02 ,  G06K9/46

CPC分类号： H04N19/13

摘要： Particular embodiments include a method, an apparatus, and logic embodied in tangible computer-readable medium that when executed carries out a method of encoding an ordered sequence of quantized transform coefficients of a block of image data. One embodiment is a context adaptive variable length coding method that includes position coding the positions of zero-valued and non-zero valued coefficients by either a mixed method that encodes either the run length of zeroes preceding a non-zero coefficient or the run length of nonzero-valued coefficients preceding a zero-valued coefficients. Another includes position coding that uses a variable length code for two parameters respectively indicating the number of zero-valued coefficient positions and nonzero-valued coefficient positions still to be coded.

摘要翻译： 具体实施例包括体现在有形计算机可读介质中的方法，装置和逻辑，其在执行时执行编码图像数据块的量化变换系数的有序序列的方法。 一个实施例是上下文自适应可变长度编码方法，其包括通过混合方法对零值和非零值系数的位置进行编码，该混合方法编码非零系数之前的零的游程长度或 零值系数之前的非零值系数。 另一种包括位置编码，其使用分别指示零值系数位置的数量和尚未编码的非零值系数位置的两个参数的可变长度代码。

公开(公告)号：US08520965B2

公开(公告)日：2013-08-27

申请号：US13495924

申请日：2012-06-13

申请人： Junlin Li ,  Ghassan AlRegib ,  Dihong Tian ,  Wen-hsiung Chen ,  Pi Sheng Chang

发明人： Junlin Li ,  Ghassan AlRegib ,  Dihong Tian ,  Wen-hsiung Chen ,  Pi Sheng Chang

IPC分类号： G06K9/36 ,  G06K9/46

CPC分类号： H04N19/91

摘要： A coding method for an ordered series of quantized transform coefficients of a block of image data, including a context adaptive position coding process to encode the position of clusters of non-zero-valued coefficients, e.g., a multidimensional position coder that uses one of a plurality of code mappings selected according to at least one criterion including at least one context-based criterion, and an amplitude encoding process to encode any amplitudes remaining to be coded, the amplitude coding using one or a plurality of amplitude code mappings selected according to at least one criterion, including a context-based criterion. A context-based selection criterion means a criterion that during encoding is known or derivable from one or more previously encoded items of information. Also a coding apparatus, a decoding apparatus, a computer readable medium configured with instructions that when executed implement a coding method, and another medium for a decoding method.

摘要翻译： 一种用于图像数据块的有序序列量化变换系数的编码方法，包括用于对非零值系数的簇的位置进行编码的上下文自适应位置编码处理，例如，多维位置编码器，其使用 根据包括至少一个基于上下文的标准的至少一个标准选择的多个代码映射，以及编码剩余的要被编码的任何幅度的幅度编码处理，使用根据以下所选择的一个或多个幅度码映射的幅度编码 至少一个标准，包括基于上下文的标准。 基于上下文的选择标准是指在编码期间已知或可从一个或多个先前编码的信息项导出的标准。 还有一种编码装置，解码装置，配置有执行执行编码方法的指令的计算机可读介质和用于解码方法的另一种介质。

公开(公告)号：US08265162B2

公开(公告)日：2012-09-11

申请号：US12016441

申请日：2008-01-18

申请人： Dihong Tian ,  Wen-hsiung Chen ,  Pi Sheng Chang

发明人： Dihong Tian ,  Wen-hsiung Chen ,  Pi Sheng Chang

IPC分类号： H04N7/12 ,  G06K9/46

CPC分类号： H04N19/124 ,  H04N19/13 ,  H04N19/167 ,  H04N19/176 ,  H04N19/196 ,  H04N19/60

摘要： A coding method, apparatus, and medium with software encoded thereon to implement a coding method. The coding method includes encoding the position of non-zero-valued coefficients in an ordered series of quantized transform coefficients of a block of image data, including encoding events using variable length coding using a plurality of variable length code mappings that each maps events to codewords, the position encoding including switching between the code mappings based on the context. The coding method further includes encoding amplitudes of the non-zero-valued coefficients using variable dimensional amplitude coding in the reverse order of the original ordering of the series.

摘要翻译： 一种编码方法，装置和介质，其上编码有软件以实现编码方法。 编码方法包括编码图像数据块的有序序列量化变换系数中的非零值系数的位置，包括使用可变长度编码的编码事件，该多个可变长度编码映射将事件映射到码字 ，位置编码包括基于上下文的代码映射之间的切换。 编码方法还包括使用可变维度幅度编码以与序列的原始顺序相反的顺序来编码非零值系数的幅度。

公开(公告)号：US20120189222A1

公开(公告)日：2012-07-26

申请号：US13426189

申请日：2012-03-21

申请人： Dihong Tian ,  Wen-hsiung Chen ,  Pi Sheng Chang

发明人： Dihong Tian ,  Wen-hsiung Chen ,  Pi Sheng Chang

IPC分类号： G06K9/36

CPC分类号： H04N19/13

摘要： Particular embodiments include a method, an apparatus, and logic embodied in tangible computer-readable medium that when executed carries out a method of encoding an ordered sequence of quantized transform coefficients of a block of image data. One embodiment is a context adaptive variable length coding method that includes position coding the positions of zero-valued and non-zero valued coefficients by either a mixed method that encodes either the run length of zeroes preceding a non-zero coefficient or the run length of nonzero-valued coefficients preceding a zero-valued coefficients. Another includes position coding that uses a variable length code for two parameters respectively indicating the number of zero-valued coefficient positions and nonzero-valued coefficient positions still to be coded.

摘要翻译： 具体实施例包括体现在有形计算机可读介质中的方法，装置和逻辑，其在执行时执行编码图像数据块的量化变换系数的有序序列的方法。 一个实施例是上下文自适应可变长度编码方法，其包括通过混合方法对零值和非零值系数的位置进行编码，该混合方法编码非零系数之前的零的游程长度或 零值系数之前的非零值系数。 另一种包括位置编码，其使用分别指示零值系数位置的数量和尚未编码的非零值系数位置的两个参数的可变长度代码。

公开(公告)号：US08218831B2

公开(公告)日：2012-07-10

申请号：US12164292

申请日：2008-06-30

申请人： Dihong Tian ,  Joseph T. Friel ,  J. William Mauchly ,  Maurice J. Buttimer ,  Wen-hsiung Chen

发明人： Dihong Tian ,  Joseph T. Friel ,  J. William Mauchly ,  Maurice J. Buttimer ,  Wen-hsiung Chen

IPC分类号： G06K9/00 ,  G06K9/72 ,  G06K9/62

CPC分类号： H04N19/17 ,  G06K9/00234 ,  G06K9/00335

摘要： Techniques are provided to analyze video frames of a video signal in order to distinguish regions containing a face (and body torso) from regions that contain a relatively static background. The region containing the face is referred to as a foreground region. A current video frame is divided into a plurality of elements and the foreground regions and background regions are detected. The background regions of a subsequent video frame are detected/registered using the foreground regions of the current video frame. The foreground regions of the subsequent video frame are determined using the background regions of the current video frame as a temporal reference.

摘要翻译： 提供技术来分析视频信号的视频帧，以区分包含脸部（和身体躯干）的区域与包含相对静态背景的区域。 包含脸部的区域被称为前景区域。 当前视频帧被分成多个元素，并且检测前景区域和背景区域。 使用当前视频帧的前景区域检测/注册后续视频帧的背景区域。 使用当前视频帧的背景区域作为时间参考确定后续视频帧的前景区域。

公开(公告)号：US20120127259A1

公开(公告)日：2012-05-24

申请号：US12950786

申请日：2010-11-19

申请人： David J. Mackie ,  Dihong Tian ,  Andrew P. Weir ,  Maurice Buttimer ,  Joseph T. Friel ,  J. William Mauchly ,  Wen-Hsiung Chen

发明人： David J. Mackie ,  Dihong Tian ,  Andrew P. Weir ,  Maurice Buttimer ,  Joseph T. Friel ,  J. William Mauchly ,  Wen-Hsiung Chen

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。

公开(公告)号：US08041131B2

公开(公告)日：2011-10-18

申请号：US12030821

申请日：2008-02-13

申请人： Junlin Li ,  Ghassan AlRegib ,  Wen-hsiung Chen ,  Dihong Tian ,  Pi Sheng Chang

发明人： Junlin Li ,  Ghassan AlRegib ,  Wen-hsiung Chen ,  Dihong Tian ,  Pi Sheng Chang

IPC分类号： G06K9/36

CPC分类号： H04N19/649 ,  H04N19/136 ,  H04N19/18 ,  H04N19/61 ,  H04N19/62 ,  H04N19/91

摘要： A coding method, apparatus, and medium with software encoded thereon to implement a coding method. The coding method includes encoding cluster of consecutive non-zero-valued coefficients, the encoding of a cluster including jointly encoding joint events that each are defined by at least two parameters: the number of zero-valued coefficients preceding the cluster, and the number of non-zero-valued coefficients in the cluster. The encoding of the cluster also includes encoding a parameter indicative of the number of amplitude-1 trailing non-zero-valued coefficients in the cluster, in one version with the parameter indicative of the number of trailing amplitude-1 coefficients part of the joint events such that the coding is according to a 3-dimensional joint variable length coding table. The method further includes encoding the amplitudes of the non-zero-valued coefficients that are not encoded by the joint encoding, e.g., encoding the amplitudes of the other than the trailing amplitude-1 coefficients.

摘要翻译： 一种编码方法，装置和介质，其上编码有软件以实现编码方法。 编码方法包括对连续的非零值系数的簇进行编码，包括联合编码关联事件的簇的编码，每一个都由至少两个参数定义：群集之前的零值系数的数量和 集群中的非零值系数。 簇的编码还包括在一个版本中编码指示簇中的幅度-1尾随非零值系数的参数，其中参数指示联合事件的一部分的后向幅度-1系数的数量 使得编码根据3维关节可变长度编码表。 该方法还包括编码非联合编码的非零值系数的幅度，例如编码除了后沿幅度-1系数之外的幅度。