基于区域生长算法的初至自动拾取方法

刘百红, 邵志东, 郑四连, 宋志翔

Automatic first-breaks picking based on region growing method

Bai-Hong LIU, Zhi-Dong SHAO, Si-Lian ZHENG, Zhi-Xiang SONG

图3 不同信噪比地震道及自动识别出的区域试验 a—高信噪比地震道;b—图a自动识别出的区域;c—图a加入均值为0.1的随机噪声;d—图c自动识别出的区域;e—图a加入均值为0.2的随机噪声;f—图d自动识别出的区域;g—图a加入均值为0.3的随机噪声;h—图g自动识别出的区域;i—图a加入均值为0.4的随机噪声;j—图i自动识别出的区域

Fig.3 Seismic trace with different signal-to-noise ratio and automatic identification area test a—a seismic trace without noise;b—recognized region of figure a;c—trace of figure a added with 0.1 random noise;d—recognized region of figure c;e—trace of figure a added with 0.2 random noise;f—recognized region of figure e;g—trace of figure a added with 0.3 random noise;h—recognized region of figure g;i—trace of figure a added with 0.4 random noise;j—recognized region of figure i