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discrete cosine transformation 1 ?离散馀弦转换 dct:discrete cosine transformation (离散馀弦转换) 的缩写。jpeg 影像资料压缩和相关演算法的一部分:将明度和色彩资讯储存为频率系数。 2 [数]?离散余弦变换 离散余弦变换(Discrete Cosine Transformation, DCT):去除各维信号之间的相关性,将 信号映射到低维空间。 3 ?离散馀弦转 [1,2] 三、离散馀弦转换与哈达码转换 3.1 离散馀弦转换 离散馀弦转(Discrete Cosine Transformation, DCT)的目的就在于频率的转换,在 频率转换的过程中,影像资料会呈现能量高低分布的情形。 4 ?离散余弦转换 ...文档网 关键字:离散余弦转换,直流系数,资讯隐藏,无失真,直方图,数位浮水印 [gap=2623]Keywords: Discrete cosine transformation, Low-frequency coefficient, Data hiding, Lossless, Histogram, Digital watermark..
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It is then subject to such mathematical indignities as wavelet decomposition, multi-resolution Fourier analysis, polyphase filtering and discrete cosine transformation. 接下来它还要经过一些数学处理程序,比如小波分解,多重分辨率傅立叶分析,多相过滤,离散余弦变换等。 - 2
There are two main transform domain methods, one is to use the discrete cosine transformation (DCT); the other would be the use of discrete wavelet transforms (DWT). 目前主要有两种变换域方法,一种是使用离散余弦变换(DCT),另一种是使用离散小波变换(DWT)。 - 3
According to the characteristics of integer discrete cosine transformation(DCT) and quantization, the coefficient-all-zero block was determined in advance to terminate meaningless search. 根据整数DCT变换和量化的特性,通过提前判定全零系数块来终止没有意义的运动搜索过程。
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