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    Method and apparatus for adaptive quantization in digital video coding
    1.
    发明授权
    Method and apparatus for adaptive quantization in digital video coding 有权
    数字视频编码中自适应量化的方法和装置

    公开(公告)号：US08451896B2

    公开(公告)日：2013-05-28

    申请号：US12581316

    申请日：2009-10-19

    申请人： Chi Keung Fong ,  Wai Kuen Cham ,  Ka Man Cheng ,  Yu Liu

    发明人： Chi Keung Fong ,  Wai Kuen Cham ,  Ka Man Cheng ,  Yu Liu

    IPC分类号： H04N7/12 ,  H04N7/50

    CPC分类号： H04N7/50 ,  H04N19/126 ,  H04N19/159 ,  H04N19/172 ,  H04N19/196 ,  H04N19/61

    摘要： The invention relates to adjusting the quantization parameter in digital video coding. A shift value (QP Shift) is used to adjust the quantization parameter. The shift value is determined in a determining step 101. The video nature is determined and compared with a threshold in a comparing step 102 to adjust the shift value adaptively according to the frame type in an adjusting step 103. The shift value shifts the quantization parameter in a shifting step 104.

    摘要翻译： 本发明涉及在数字视频编码中调整量化参数。 移位值（QP Shift）用于调整量化参数。 在确定步骤10​​1中确定移位值。在比较步骤102中确定视频特性并将其与阈值进行比较，以在调整步骤103中根据帧类型自适应地调整移位值。移位值将量化参数 在移动步骤104中。

    ADAPTIVE BLOCK-SIZE TRANSFORM USING LLMICT
    2.
    发明申请
    ADAPTIVE BLOCK-SIZE TRANSFORM USING LLMICT 有权
    使用法律硕士的自适应大小变换

    公开(公告)号：US20130151575A1

    公开(公告)日：2013-06-13

    申请号：US13316556

    申请日：2011-12-11

    申请人： Chi Keung Fong ,  Wai-Kuen Cham

    发明人： Chi Keung Fong ,  Wai-Kuen Cham

    IPC分类号： G06F7/00

    CPC分类号： H04N19/42 ,  H04N19/60

    摘要： The LLMICT transform matrices are orthogonal, hence their inverses are their transpose. The LLMICT transform matrices are integer matrices, which can be implemented with high precision eliminating the drift error in video coding. The fast algorithms for the LLMICT transform are found, thus allowing a lower requirement on computation hardware. The LLMICT is also found to have high transform coding gain due to its similarity to the DCT.

    摘要翻译： LLMICT变换矩阵是正交的，因此它们的倒数是它们的转置。 LLMICT变换矩阵是整数矩阵，可以高精度地实现，消除视频编码中的漂移误差。 发现了LLMICT变换的快速算法，从而允许对计算硬件的要求较低。 由于其与DCT的相似性，LLMICT还具有高变换编码增益。

    Adaptive block-size transform using LLMICT
    4.
    发明授权
    Adaptive block-size transform using LLMICT 有权
    使用LLMICT的自适应块大小变换

    公开(公告)号：US08719321B2

    公开(公告)日：2014-05-06

    申请号：US13316556

    申请日：2011-12-11

    申请人： Chi Keung Fong ,  Wai-Kuen Cham

    发明人： Chi Keung Fong ,  Wai-Kuen Cham

    IPC分类号： G06F7/00

    CPC分类号： H04N19/42 ,  H04N19/60

    摘要： The LLMICT transform matrices are orthogonal, hence their inverses are their transpose. The LLMICT transform matrices are integer matrices, which can be implemented with high precision eliminating the drift error in video coding. The fast algorithms for the LLMICT transform are found, thus allowing a lower requirement on computation hardware. The LLMICT is also found to have high transform coding gain due to its similarity to the DCT.

    摘要翻译： LLMICT变换矩阵是正交的，因此它们的倒数是它们的转置。 LLMICT变换矩阵是整数矩阵，可以高精度地实现，消除视频编码中的漂移误差。 发现了LLMICT变换的快速算法，从而允许对计算硬件的要求较低。 由于其与DCT的相似性，LLMICT还具有高变换编码增益。

    Processes and apparatus for deriving order-16 integer transforms
    5.
    发明授权
    Processes and apparatus for deriving order-16 integer transforms 失效
    导出16阶整数变换的过程和设备

    公开(公告)号：US08255445B2

    公开(公告)日：2012-08-28

    申请号：US12100358

    申请日：2008-04-09

    申请人： Wai Kuen Cham ,  Chi Keung Fong

    发明人： Wai Kuen Cham ,  Chi Keung Fong

    IPC分类号： G06F17/14

    CPC分类号： G06F17/147

    摘要： Apparatus, systems and techniques based on an integer transform for encoding and decoding video or image signals, including apparatus, systems and techniques for deriving an order-16 integer transform from an order-8 integer transform in image and video coding. In some implementations, eight additions and eight subtractions are used to assign the data elements to be transformed to an intermediate matrix; and then two fast algorithms for the computation of the order-8 transform may be applied to the first 8 vectors of the intermediate matrix, and the last 8 vectors of the intermediate matrix, respectively. The derived order-16 integer transform tends to produce small magnitude and high frequency transformed coefficients, and thus achieve high compressibility.

    摘要翻译： 基于用于编码和解码视频或图像信号的整数变换的装置，系统和技术，包括用于从图像和视频编码中的8阶整数变换得到16阶整数变换的装置，系统和技术。 在一些实现中，使用八个加法和八个减法来将要变换的数据元素分配给中间矩阵; 然后可以将用于计算8阶变换的两个快速算法应用于中间矩阵的前8个向量，以及中间矩阵的最后8个向量。 衍生的顺序16整数变换倾向于产生小幅度和高频变换系数，从而实现高压缩性。

    Methods and apparatus for deriving an order-16 integer transform
    6.
    发明授权
    Methods and apparatus for deriving an order-16 integer transform 失效
    用于导出16阶整数变换的方法和装置

    公开(公告)号：US08175165B2

    公开(公告)日：2012-05-08

    申请号：US12103676

    申请日：2008-04-15

    申请人： Wai Kuen Cham ,  Chi Keung Fong

    发明人： Wai Kuen Cham ,  Chi Keung Fong

    IPC分类号： H04B1/06

    CPC分类号： H04N19/60 ,  G06F17/147

    摘要： Apparatus, systems and techniques based on an integer transform for encoding and decoding video or image signals, including an order-16 integer transform from a Microsoft Media Video order-8 integer transform with a high energy-packing ability and an improved data compression in the field of image and video coding. For example, a method and an apparatus are provided for deriving an order-16 integer transform from an order-8 integer transform in the standard transform of Microsoft Media Video. Eight additions and eight subtractions are used to assign the data elements to be transformed to an intermediate matrix; and then two fast algorithms for the computation of the order-8 transform may be applied to the first 8 vectors of the intermediate matrix, and the last 8 vectors of the intermediate matrix, respectively. The derived order-16 integer transform tends to produce small magnitude and high frequency transformed coefficients, and thus achieve high compressibility.

    摘要翻译： 基于用于对视频或图像信号进行编码和解码的整数变换的装置，系统和技术，包括来自具有高能量包装能力的Microsoft Media Video order-8整数变换的顺序16整数变换，以及改进的数据压缩 图像和视频编码领域。 例如，提供了一种方法和装置，用于在Microsoft Media Video的标准变换中从8阶整数变换得出16阶整数变换。 使用八个加法和八个减法来将要转换的数据元素分配给中间矩阵; 然后可以将用于计算8阶变换的两个快速算法应用于中间矩阵的前8个向量，以及中间矩阵的最后8个向量。 衍生的顺序16整数变换倾向于产生小幅度和高频变换系数，从而实现高压缩性。

    Methods and Apparatus for Deriving an Order-16 Integer Transform
    7.
    发明申请
    Methods and Apparatus for Deriving an Order-16 Integer Transform 失效
    用于导出16阶整数变换的方法和装置

    公开(公告)号：US20090257504A1

    公开(公告)日：2009-10-15

    申请号：US12103676

    申请日：2008-04-15

    申请人： Wai Kuen Cham ,  Chi Keung Fong

    发明人： Wai Kuen Cham ,  Chi Keung Fong

    IPC分类号： H04N7/26

    CPC分类号： H04N19/60 ,  G06F17/147

    摘要： Apparatus, systems and techniques based on an integer transform for encoding and decoding video or image signals, including an order-16 integer transform from a Microsoft Media Video order-8 integer transform with a high energy-packing ability and an improved data compression in the field of image and video coding. For example, a method and an apparatus are provided for deriving an order-16 integer transform from an order-8 integer transform in the standard transform of Microsoft Media Video. Eight additions and eight subtractions are used to assign the data elements to be transformed to an intermediate matrix; and then two fast algorithms for the computation of the order-8 transform may be applied to the first 8 vectors of the intermediate matrix, and the last 8 vectors of the intermediate matrix, respectively. The derived order-16 integer transform tends to produce small magnitude and high frequency transformed coefficients, and thus achieve high compressibility.

    摘要翻译： 基于用于对视频或图像信号进行编码和解码的整数变换的装置，系统和技术，包括来自具有高能量包装能力的Microsoft Media Video order-8整数变换的顺序16整数变换，以及改进的数据压缩 图像和视频编码领域。 例如，提供了一种方法和装置，用于在Microsoft Media Video的标准变换中从8阶整数变换得出16阶整数变换。 使用八个加法和八个减法来将要转换的数据元素分配给中间矩阵; 然后可以将用于计算8阶变换的两个快速算法应用于中间矩阵的前8个向量，以及中间矩阵的最后8个向量。 衍生的顺序16整数变换倾向于产生小幅度和高频变换系数，从而实现高压缩性。

    Processes and apparatus for deriving order-16 integer transforms
    9.
    发明申请
    Processes and apparatus for deriving order-16 integer transforms 失效
    导出16阶整数变换的过程和设备

    公开(公告)号：US20090112958A1

    公开(公告)日：2009-04-30

    申请号：US12100358

    申请日：2008-04-09

    申请人： Wai Kuen Cham ,  Chi Keung Fong

    发明人： Wai Kuen Cham ,  Chi Keung Fong

    IPC分类号： G06F17/14

    CPC分类号： G06F17/147

    摘要： Apparatus, systems and techniques based on an integer transform for encoding and decoding video or image signals, including apparatus, systems and techniques for deriving an order-16 integer transform from an order-8 integer transform in image and video coding. In some implementations, eight additions and eight subtractions are used to assign the data elements to be transformed to an intermediate matrix; and then two fast algorithms for the computation of the order-8 transform may be applied to the first 8 vectors of the intermediate matrix, and the last 8 vectors of the intermediate matrix, respectively. The derived order-16 integer transform tends to produce small magnitude and high frequency transformed coefficients, and thus achieve high compressibility.

    摘要翻译： 基于用于编码和解码视频或图像信号的整数变换的装置，系统和技术，包括用于从图像和视频编码中的8阶整数变换得到16阶整数变换的装置，系统和技术。 在一些实现中，使用八个加法和八个减法来将要变换的数据元素分配给中间矩阵; 然后可以将用于计算8阶变换的两个快速算法应用于中间矩阵的前8个向量，以及中间矩阵的最后8个向量。 衍生的顺序16整数变换倾向于产生小幅度和高频变换系数，从而实现高压缩性。

    Devices and Methods for Transforming Coding Coefficients of Video Signals
    10.
    发明申请
    Devices and Methods for Transforming Coding Coefficients of Video Signals 审中-公开
    用于转换视频信号编码系数的设备和方法

    公开(公告)号：US20080284906A1

    公开(公告)日：2008-11-20

    申请号：US12096531

    申请日：2006-12-08

    申请人： Wai Kuen Cham ,  Chi Keung Fong

    发明人： Wai Kuen Cham ,  Chi Keung Fong

    IPC分类号： H04N7/30

    CPC分类号： H04N19/122 ,  H04N19/40 ,  H04N19/61

    摘要： Disclosed are a device and a method for transforming a first coding coefficients of video signals into a second coding coefficients of the video signals. The device includes a first storing means for storing the first coding coefficients; a second storing means for storing a transform matrix; a multiplication means for multiplying the first coding coefficients by coefficients of the transform matrix; an addition means for adding each of values resulted from the multiplication operation of the multiplication means to form a sum; and a shifting means for shifting the sum to obtain the second coding coefficients. According to the present invention, signals compressed by various transforms may be transformed to each other, so as to make various compression signals compatible. Thus, the signals can be compatible with more standards and are more universal.

    摘要翻译： 公开了一种用于将视频信号的第一编码系数变换为视频信号的第二编码系数的装置和方法。 该装置包括用于存储第一编码系数的第一存储装置; 第二存储装置，用于存储变换矩阵; 乘法装置，用于将第一编码系数乘以变换矩阵的系数; 一个加法装置，用于将由乘法装置的乘法运算得到的每个值相加以形成一个和; 以及用于移位所述和以获得所述第二编码系数的移位装置。 根据本发明，可以将通过各种变换压缩的信号彼此变换，以使各种压缩信号兼容。 因此，信号可以与更多的标准兼容，并且更通用。