反褶积
去模糊
黑森矩阵
盲反褶积
计算机科学
点扩散函数
人工智能
算法
维纳反褶积
图像分辨率
计算机视觉
图像处理
图像复原
图像(数学)
数学
应用数学
作者
Cewen Liu,Mengyao Sun,Nanxun Dai,Wei Wu,Yanwen Wei,Mingjie Guo,Haohuan Fu
出处
期刊:Geophysics
[Society of Exploration Geophysicists]
日期:2022-06-27
卷期号:87 (4): S249-S265
被引量:1
标识
DOI:10.1190/geo2020-0904.1
摘要
High-resolution seismic imaging is crucial for deriving an accurate geologic section and ensuring successful petroleum exploration. However, traditional high-resolution imaging methods, such as least-squares reverse time migration (LSRTM) and migration deconvolution, usually involve high computational costs for approximating the inverse Hessian matrix with limited improvements in resolution. To obtain high-resolution migration images and reduce computing costs, we present a deep learning-based point-spread function (PSF) deconvolution method. We decompose the large Hessian matrix into small dispersed PSFs and design a convolutional neural network (CNN) to automatically predict the deconvolution operator of every single PSF. The deconvolution operator eliminates the PSF effect and balances the insufficient illumination of the acquisition geometry. To obtain an efficient CNN model for predicting deconvolution operators, we trained 2500 pairs of PSFs and their corresponding deconvolution operators collected from part of a model using the regular PSF deconvolution method. After training the network, we could predict all deconvolution operators in a few seconds for the following processing of migration images. The results on synthetic and field-data applications indicate that our method could provide a deblurred migration image comparable to that of the LSRTM approaches with significantly reduced computational and memory costs.
科研通智能强力驱动
Strongly Powered by AbleSci AI