基于Shearlet变换的非局部均值地震噪声压制
王金刚1,2(
), 安勇1,2(), 徐振旺3
), 安勇1,2(), 徐振旺3
Seismic noise suppression using non-local means algorithm based on the Shearlet transform
WANG Jin-Gang1,2(), AN Yong1,2(), XU Zhen-Wang3
), AN Yong1,2(), XU Zhen-Wang3
图7. F-K谱分析
a—原始不含噪数据;b—加入随机噪声后的数据;c—常规NLM算法;d—本文算法
Fig.7. Frequency-wavenumber spectrum
a—raw seismic data;b—simulated a profile with random noise;c—traditional NLM algorithm;d—the algorithm of this paper
