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一种广义高斯分布形状参数的快速估计算法

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摘要 广义高斯分布(GGD)在信号处理和图像处理等领域都有着广泛的应用。GGD形状参数的估计通常采用极大似然法和矩估计法。用极大似然法估计形状参数计算复杂、计算量大。用矩估计法的一阶和二阶绝对矩估计可减轻计算的复杂性,但反函数的解析形式很难得到,需要迭代计算,计算效率很低。文中提出了一种基于反函数曲线拟合的GGD形状参数估计方法,在[0.1,2.5]区间与其它现有方法相比具有函数形式简单(仅具有7个系数)、估计精度高、计算简便快速等优点。
作者 董阳武
出处 《矿山测量》 2012年第5期45-48,共4页 Mine Surveying
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