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《Journal of Yangtze University(Natural Science Edition) Sci & Eng V》 2009-04
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High-accuracy Coherence Analysis Based on Edge-preserving Smoothing

ZHAO Yan,HE Zhen-hua,HUANG De-ji (Chengdu University of Technology,Chengdu 610059)  
Seismic coherence had more advantages from the aspect of revealing,lateral changes of strata, fault and complex structure compared to the conventional seismic amplitude slice .But when the original seismic amplitude data volume had lower signal to noise ratio, the coherence cube was seriously influenced by the noise,its ability of resolution was poor.In order to overcome the shortcoming with large influence of noise on the conventional calculation of coherence cube and by introducing 3-D edge-preserving smoothing technique, this paper presentsed a 3-D edge-preserving smoothing -based coherence analysis method,it first carried out edge-preserving smoothing prosessing of original seismic amplitude data volume before the coherence analysis.The computing results of practical data show that the ability to distinguish the fault and complex structure of the coherence slice gained by the method significantly increase.
【CateGory Index】: P631.44
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