Seismic data denoising based on data-driven tight frame dictionary learning method

来源 :世界地质(英文版) | 被引量 : 0次 | 上传用户:helen527
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
Because of various complicated factors in seismic data collection, the random noise of seismic data is too difficult to avoid. This random noise reduces the quality of seismic data and increases the difficulty of seis-mic data processing and interpretation. Improving the denoising technology is significant. In order to improve seismic data denoising result, a novel method named data-driven tight frame ( DDTF) is introduced in this pa-per. First, we get the sparse coefficients of seismic data with noise by DDTF. Then we remove the smaller sparse coefficient by using the hard threshold function. Finally, we get the denoised seismic data by inverse transform. Furthermore, the DDTF is compared with curvelet transform in the stimulation and practical seismic data experiments to validate its performance. DDTF can raise the signal-to-noise ratio of seismic data denoising and protect the effective signal well.
其他文献
Using the cubature points based triangular spectral element method and isoparametric mappings, we provide accuracy results for elliptic problems in non polyg-on
We consider the nonlinear Dirac equation (NLD) with time dependent ex-ternal electro-magnetic potentials, involving a dimensionless parameter ε∈(0,1] which is
The authors employ the high-density resistivity method to image the subsurface structure of a moun-tain in Erdaojiang District, Tonghua City, Jilin Province, Ch
目的:探讨经阴道三维彩色超声对子宫内膜息肉诊断价值。方法:回顾性分析73例经病理证实子宫内膜息肉患者的二维及三维彩色超声图像特征,并对结果进行分析。结果:73例子宫内膜