cosine fourier coefficient 余弦傅里叶系数
Based on the Discrete Cosine Transform (DCT) coefficient histogram difference sequences of JPEG images, a new steganalytic method was proposed to realize the steganalysis of JPEG MB2.
基于JPEG图像的离散余弦变换（DCT）系数直方图差值序列，提出一种新的检测JPEG MB2隐写术的方法。
This paper selects the algorithm by quantifying the amplitude of the transform domain coefficient and uses this algorithm in the discrete Fourier domain and the discrete cosine domain.
在众多语音信息隐藏算法中，挑选出一种幅度量化的信息嵌入方案，分别在离散余弦和小波变换域上，通过对变换域系数的幅度量化来隐藏信息；
Correlative coefficient was computed using Cosine method. Hierarchical classification used SPSS11.0 statistical analysis software.
采用夹角余弦法计算相关系数，并使用SPSS11.0统计分析软件对指纹图谱进行系统聚类分析。
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