DCT coefficients scrambling DCT系数置乱
dct residue coefficients dct残差系数
AC coefficients in DCT domain DCT域AC系数
Finally, the underlying matrix, the DCT coefficients and mean-value are vector quantized.
最后，对近似矩阵、dct系数和均值矢量量化。
So a hybrid video watermarking scheme based on motion vectors and DCT coefficients is proposed.
提出了一种基于运动矢量域与DCT域的混合视频水印方案。
Based on the distribution of DCT coefficients, a new rate control idea is proposed in this paper.
在DCT变换系数的分布模型上，本文提出了一种码率控制的新思路。
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