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首页> 外文期刊>IEEE Geoscience and Remote Sensing Letters >An Improved Anisotropic Markov Random Field Approach for Prestack Seismic Inversion
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An Improved Anisotropic Markov Random Field Approach for Prestack Seismic Inversion

机译:叠前地震反演的改进各向异性马尔可夫随机场方法

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This letter presents an improved anisotropic Markov random field (IAMRF) approach for prestack seismic inversion. Instead of using multiple potential functions or adding extra weights on clique potentials as done in existing AMRF approaches, IAMRF removes the effects of anisotropic gradients in subsurface models by means of scaling parameters, which directly tune the model gradients right above. In particular, the scaling parameters are not only directionally varied at certain iterations but also updated by a statistical method at every iteration throughout the inversion, thereby generating more accurate and better edge-preserving inverted results. The prestack seismic inversion based on the IAMRF prior constraints is demonstrated on a field data example, which presents encouraging results.
机译:这封信提出了一种用于叠前地震反演的改进的各向异性马尔可夫随机场(IAMRF)方法。 IAMRF并没有像现有的AMRF方法那样使用多个势函数或在集团势上增加额外的权重,而是通过缩放参数消除了地下模型中各向异性梯度的影响,该参数直接调整了上面的模型梯度。特别地,缩放参数不仅在某些迭代中有方向地变化,而且在整个反演中的每次迭代中都通过统计方法进行更新,从而生成更准确和更好的边缘保留反演结果。在现场数据示例中演示了基于IAMRF先验约束的叠前地震反演,结果令人鼓舞。

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