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Methods and Apparatus for Deriving an Order-16 Integer Transform
Methods and Apparatus for Deriving an Order-16 Integer Transform
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机译:求16阶整数变换的方法和装置
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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.
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机译:基于整数变换的设备,系统和技术,用于对视频或图像信号进行编码和解码,包括来自Microsoft Media Video 8阶整数变换的16阶整数变换,具有高能量打包能力和改进的数据压缩能力。图像和视频编码领域。例如,提供了一种方法和装置,用于从Microsoft Media Video的标准变换中的8阶整数变换中得出16阶整数变换。八个加法和八个减法用于将要转换的数据元素分配给中间矩阵。然后可以将两种用于8阶变换计算的快速算法分别应用于中间矩阵的前8个向量和中间矩阵的后8个向量。导出的16阶整数变换趋向于产生较小的幅度和高频变换系数,从而实现高可压缩性。
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