基于快速自适应非局部均值滤波的地震随机噪声压制方法

崔亚彤, 王胜侯, 蔡忠贤

Seismic random noise attenuation method based on the fast adaptive non-local means filtering algorithm

CUI Ya-Tong, WANG Sheng-Hou, CAI Zhong-Xian

图3 模型试验2的合成模型数据噪声压制结果 a—无噪声的数据;b—噪声数据(SNR=-3.01 dB);c—传统NLM方法去噪结果;d—a与c的差剖面;e—基于最小方差估计的NLM方法去噪结果;f—a与e的差剖面;g—本文方法去噪的结果;h—a与g的差剖面

Fig.3 Noise attenuation results of synthetic model data from model data test 2 a—noise-free data;b—noisy data (SNR=-3.01 dB);c—denoised result by using conventional NLM method;d—difference between a and c;e—denoised result by using NLM based on minimum variance estimation;f—difference between a and e;g—denoised result by using proposed method;h—difference between a and g