在文献 ¨4儿15J中，Bruzzone等人通过引入广义高斯模型（Generalized Gaussian Model）的方 法来对Ⅺ阈值Il 6J进行了扩展，并利用该扩展后的阈值方法与对数比值差异影像图 结合，取得了较好的变化检测结果。
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The results of the tests show that the generalized Gaussian model is better than the Laplacian model in portraying the distribution of the AC DCT coefficients.
检验结果表明，广义高斯模型比拉普拉斯模型更准确地反映了DCT交流系数的分布。
There is no consensus on the distribution of the AC DCT coefficients till now. In this work, the generalized Gaussian model and the Laplacian model, which are used most widely, were studied.
针对离散余弦变换（DCT）系数分布模型类型存在的异议，研究并比较了拉普拉斯模型和广义高斯模型。
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