The optimum detection based on the maximum likelihood is realized through the parameter estimation of two kinds of image block DCT coefficients.

  • 该方法利用DCT变换中图像块低频能量的差异将DCT系数划分成平滑和纹理两类;并分别对这两类数据进行参数估计以实现基于最大似然比的最优检测.
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