公开(公告)号：US20110249726A1

公开(公告)日：2011-10-13

申请号：US13078779

申请日：2011-04-01

申请人： Thai-Ha Nguyen ,  Yoichi Yagasaki ,  Ali Tabatabai

发明人： Thai-Ha Nguyen ,  Yoichi Yagasaki ,  Ali Tabatabai

IPC分类号： H04N7/32 ,  H04N7/12

CPC分类号： H04N19/157 ,  H04N19/129 ,  H04N19/176 ,  H04N19/61

摘要： Entropy encoding is performed in the inventive apparatus and method in response to the scanning of transform coefficients following an initial scanning pattern selected on the basis of probability statistics of non-zero coefficients for each block position. These non-zero probability statistics are ranked for a given combination of coding characteristics within the current block to arrive at an initial scanning pattern. The same initial scanning pattern selection is performed in the decoder to allow the transform coefficients to be extracted in their proper order from encoded video data. The pattern selection is applicable to both intra prediction and inter prediction. Transform coefficients are more accurately ordered in response to the invention because in adapting pattern initialization to quantization step size, high-frequency basis functions are properly taken into account.

摘要翻译： 响应于基于对于每个块位置的非零系数的概率统计选择的初始扫描模式之后的变换系数的扫描，在本发明的装置和方法中执行熵编码。 对于当前块内的编码特性的给定组合来对这些非零概率统计进行排序，以得到初始扫描模式。 在解码器中执行相同的初始扫描模式选择，以允许以编码视频数据的正确顺序提取变换系数。 模式选择适用于帧内预测和帧间预测。 响应于本发明，变换系数被更准确地排序，因为在将模式初始化适应到量化步长时，高频基函数被适当地考虑在内。

公开(公告)号：US08929440B2

公开(公告)日：2015-01-06

申请号：US13078779

申请日：2011-04-01

申请人： Thai-Ha Nguyen ,  Yoichi Yagasaki ,  Ali Tabatabai

发明人： Thai-Ha Nguyen ,  Yoichi Yagasaki ,  Ali Tabatabai

IPC分类号： H04N7/32 ,  H04N19/157 ,  H04N19/129 ,  H04N19/176 ,  H04N19/61

CPC分类号： H04N19/157 ,  H04N19/129 ,  H04N19/176 ,  H04N19/61

摘要： Entropy encoding is performed in the inventive apparatus and method in response to the scanning of transform coefficients following an initial scanning pattern selected on the basis of probability statistics of non-zero coefficients for each block position. These non-zero probability statistics are ranked for a given combination of coding characteristics within the current block to arrive at an initial scanning pattern. The same initial scanning pattern selection is performed in the decoder to allow the transform coefficients to be extracted in their proper order from encoded video data. The pattern selection is applicable to both intra prediction and inter prediction. Transform coefficients are more accurately ordered in response to the invention because in adapting pattern initialization to quantization step size, high-frequency basis functions are properly taken into account.

摘要翻译： 响应于基于对于每个块位置的非零系数的概率统计选择的初始扫描模式之后的变换系数的扫描，在本发明的装置和方法中执行熵编码。 对于当前块内的编码特性的给定组合来对这些非零概率统计进行排序，以得到初始扫描模式。 在解码器中执行相同的初始扫描模式选择，以允许以编码视频数据的正确顺序提取变换系数。 模式选择适用于帧内预测和帧间预测。 响应于本发明，变换系数被更准确地排序，因为在将模式初始化适应到量化步长时，高频基函数被适当地考虑在内。

公开(公告)号：US20110249724A1

公开(公告)日：2011-10-13

申请号：US12962645

申请日：2010-12-07

申请人： Thai-Ha Nguyen ,  Ali Tabatabai

发明人： Thai-Ha Nguyen ,  Ali Tabatabai

IPC分类号： H04N7/30

CPC分类号： H04N19/593 ,  H04N19/42 ,  H04N19/63

摘要： An apparatus and method for encoding video using directional discrete waveform transforms (DDWT), such as within a codec device. DDWT can be utilized to replace the use of intra transforms and inter transforms within the encoding system. In many ways the output of the DDWT can be compared with that provided using MDDT, however, it does not require a training process while it also provides enhanced encoding of feature edges with desirable visual characteristics. The transforms are applied in at least two passes, along the prediction direction, and then across the prediction direction, instead of being applied in fixed vertical and horizontal directions. Directional scaling is not required prior to the second stage of transforms.

摘要翻译： 一种使用定向离散波形变换（DDWT）编码视频的装置和方法，例如在编解码器装置内。 DDWT可用于替代编码系统内部帧内变换和帧间变换的使用。 在许多方面，可以将DDWT的输出与使用MDDT提供的输出进行比较，但是它不需要训练过程，同时还可以对特征边缘进行增强编码，并具有理想的视觉特征。 沿着预测方向在至少两遍中施加变换，然后跨越预测方向施加变换，而不是施加在固定的垂直和水平方向上。 在第二阶段的转换之前不需要定向缩放。

公开(公告)号：US20120057799A1

公开(公告)日：2012-03-08

申请号：US12962638

申请日：2010-12-07

申请人： Thai-Ha Nguyen ,  Ali Tabatabai

发明人： Thai-Ha Nguyen ,  Ali Tabatabai

IPC分类号： G06K9/46

CPC分类号： H03M7/46 ,  H03M7/3082 ,  H03M7/4018 ,  H04N19/91

摘要： Apparatus and methods for coding images geometric vector quantization (GVQ) having an over-complete dictionary which produces a sparse vector of coefficients as it contains large runs of zeros. The sparse encoding is particularly well suited for use with run-length entropy coding techniques. Image blocks are sparse coded using GVQ, with the vector of coefficients converted to RUN-LENGTH symbols, and binarized into a set of binary symbols. At least a portion of the binary symbols are used as contexts which can be selected when performing binary arithmetic coding of the binary coded RUN and LENGTH data to generate a bit stream containing the encoded image that provides enhanced compression.

摘要翻译： 用于编码具有过完整字典的图像几何矢量量化（GVQ）的装置和方法，其在包含大量零的零时产生系数的稀疏矢量。 稀疏编码特别适用于游程长度熵编码技术。 使用GVQ对图像块进行稀疏编码，将系数矢量转换为RUN-LENGTH符号，并将其二值化为一组二进制符号。 二进制符号的至少一部分被用作当对二进制编码的RUN和LENGTH数据执行二进制算术编码时可以选择的上下文，以生成包含提供增强压缩的编码图像的比特流。

公开(公告)号：US08705619B2

公开(公告)日：2014-04-22

申请号：US12962645

申请日：2010-12-07

申请人： Thai-Ha Nguyen ,  Ali Tabatabai

发明人： Thai-Ha Nguyen ,  Ali Tabatabai

IPC分类号： H04N7/30

CPC分类号： H04N19/593 ,  H04N19/42 ,  H04N19/63

摘要： An apparatus and method for encoding video using directional discrete waveform transforms (DDWT), such as within a codec device. DDWT can be utilized to replace the use of intra transforms and inter transforms within the encoding system. In many ways the output of the DDWT can be compared with that provided using MDDT, however, it does not require a training process while it also provides enhanced encoding of feature edges with desirable visual characteristics. The transforms are applied in at least two passes, along the prediction direction, and then across the prediction direction, instead of being applied in fixed vertical and horizontal directions. Directional scaling is not required prior to the second stage of transforms.

摘要翻译： 一种使用定向离散波形变换（DDWT）编码视频的装置和方法，例如在编解码器装置内。 DDWT可用于替代编码系统内部帧内变换和帧间变换的使用。 在许多方面，可以将DDWT的输出与使用MDDT提供的输出进行比较，但是它不需要训练过程，同时还可以对特征边缘进行增强编码，并具有理想的视觉特征。 沿着预测方向在至少两遍中施加变换，然后跨越预测方向施加变换，而不是施加在固定的垂直和水平方向上。 在第二阶段的转换之前不需要定向缩放。

公开(公告)号：US08483500B2

公开(公告)日：2013-07-09

申请号：US12962638

申请日：2010-12-07

申请人： Thai-Ha Nguyen ,  Ali Tabatabai

发明人： Thai-Ha Nguyen ,  Ali Tabatabai

IPC分类号： G06K9/36 ,  G06K9/46

CPC分类号： H03M7/46 ,  H03M7/3082 ,  H03M7/4018 ,  H04N19/91

摘要： Apparatus and methods for coding images geometric vector quantization (GVQ) having an over-complete dictionary which produces a sparse vector of coefficients as it contains large runs of zeros. The sparse encoding is particularly well suited for use with run-length entropy coding techniques. Image blocks are sparse coded using GVQ, with the vector of coefficients converted to RUN-LENGTH symbols, and binarized into a set of binary symbols. At least a portion of the binary symbols are used as contexts which can be selected when performing binary arithmetic coding of the binary coded RUN and LENGTH data to generate a bit stream containing the encoded image that provides enhanced compression.

摘要翻译： 用于编码具有过完整字典的图像几何矢量量化（GVQ）的装置和方法，其在包含大量零的零时产生系数的稀疏矢量。 稀疏编码特别适用于游程长度熵编码技术。 使用GVQ对图像块进行稀疏编码，将系数矢量转换为RUN-LENGTH符号，并将其二值化为一组二进制符号。 二进制符号的至少一部分被用作当对二进制编码的RUN和LENGTH数据执行二进制算术编码时可以选择的上下文，以生成包含提供增强压缩的编码图像的比特流。

公开(公告)号：US08396305B2

公开(公告)日：2013-03-12

申请号：US12833831

申请日：2010-07-09

申请人： Thai-Ha Nguyen ,  Ali Tabatabai

发明人： Thai-Ha Nguyen ,  Ali Tabatabai

IPC分类号： G06K9/36

CPC分类号： H04N19/647

摘要： Image encoding for changing representation of zero coefficient clustering and for utilizing a novel directional transform for exploiting the directional properties of image energy. The apparatus and methods can be applied to numerous applications, such as within image codecs. A ring-tree method is taught for representing the grouping of zero transform coefficients as ring-trees into a new symbol for more efficiently coding images. Directional transforms are taught which provide enhanced energy compactness of coefficients, and which capture directional energy resulting in generating enhanced visual quality.

摘要翻译： 图像编码用于改变零系数聚类的表示，并利用新颖的方向变换来利用图像能量的方向属性。 该装置和方法可以应用于许多应用，例如在图像编解码器内。 教导了一种环树法，将零变换系数的分组表示为环树，形成新的符号以更有效地编码图像。 教导了提供增强的系数的能量紧密度的定向变换，并且其捕获定向能量，从而产生增强的视觉质量。

公开(公告)号：US20120008870A1

公开(公告)日：2012-01-12

申请号：US12833831

申请日：2010-07-09

申请人： Thai-Ha Nguyen ,  Ali Tabatabai

发明人： Thai-Ha Nguyen ,  Ali Tabatabai

IPC分类号： G06K9/54

CPC分类号： H04N19/647

摘要： Image encoding for changing representation of zero coefficient clustering and for utilizing a novel directional transform for exploiting the directional properties of image energy. The apparatus and methods can be applied to numerous applications, such as within image codecs. A ring-tree method is taught for representing the grouping of zero transform coefficients as ring-trees into a new symbol for more efficiently coding images. Directional transforms are taught which provide enhanced energy compactness of coefficients, and which capture directional energy resulting in generating enhanced visual quality.

摘要翻译： 图像编码用于改变零系数聚类的表示，并利用新颖的方向变换来利用图像能量的方向属性。 该装置和方法可以应用于许多应用，例如在图像编解码器内。 教导了一种环树法，将零变换系数的分组表示为环树，形成新的符号以更有效地编码图像。 教导了提供增强的系数的能量紧密度的定向变换，并且其捕获定向能量，从而产生增强的视觉质量。