SUPPRESSION OF ABNORMAL AMPLITUDE NOISE WITH SEISMIC WAVE SIMILARITY NON-LOCAL MEAN FILTER

ZHAO Chong; LI Huifeng; ZHAO Chi; YANG Feilong; YANG Wenping; HUANG Dezhi; LUO Hao; ZHAO Xiu; ZHANG Xue

doi:10.16028/j.1009-2722.2020.069

2021 Vol. 37, No. 3

Article Contents

Article navigation > Marine Geology Frontiers > 2021 > 37(3): 60-65

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ZHAO Chong, LI Huifeng, ZHAO Chi, YANG Feilong, YANG Wenping, HUANG Dezhi, LUO Hao, ZHAO Xiu, ZHANG Xue. SUPPRESSION OF ABNORMAL AMPLITUDE NOISE WITH SEISMIC WAVE SIMILARITY NON-LOCAL MEAN FILTER[J]. Marine Geology Frontiers, 2021, 37(3): 60-65. doi: 10.16028/j.1009-2722.2020.069

Citation:

ZHAO Chong, LI Huifeng, ZHAO Chi, YANG Feilong, YANG Wenping, HUANG Dezhi, LUO Hao, ZHAO Xiu, ZHANG Xue. SUPPRESSION OF ABNORMAL AMPLITUDE NOISE WITH SEISMIC WAVE SIMILARITY NON-LOCAL MEAN FILTER[J]. Marine Geology Frontiers, 2021, 37(3): 60-65. doi: 10.16028/j.1009-2722.2020.069

SUPPRESSION OF ABNORMAL AMPLITUDE NOISE WITH SEISMIC WAVE SIMILARITY NON-LOCAL MEAN FILTER

1.
Xi'an Shiyou University, Xi'an 710065, China
2.
Shaanxi Key Laboratory of Oil and Gas Accumulation Geology, Xi'an 710065, China
3.
Sinopec Petroleum Engineering Geophysics North China Branch, Zhengzhou 450000, China
4.
Technology Company of Zhongyuan Petroleum Engineering, Puyang 457000, Henan, China
5.
Jilin University, Changchun 130026, China
6.
PetroChina Changqing Oilfield Branch Fourth Oil Production Plant, Jingbian 710021, Shaanxi, China

Received Date: 07 June 2020

Publish Date: 28 March 2021

Abstract

Abstract

Non-local mean filtering denoises the image based on the similarity between pixels in the image. However, this method cannot effectively suppress the abnormal amplitude noise in the image. The seismic signals simultaneously in common offset gathers (equal offset gathers sorted by shot coordinates) have the characteristics of high similarity and concentrated distribution. So, the abnormal amplitude noise in the signal can be judged according to the weight function of non-local mean filtering. Based on the theory mentioned above, this paper proposes a non-local mean filtering method for suppressing abnormal noise based on the similarity of seismic waves to effectively suppress random noise and abnormal amplitude noise in seismic signals. The trial results of theoretical and actual seismic data show that the method proposed in this paper can effectively suppress random noise and abnormal amplitude noise in seismic signals, and can further improve the signal-to-noise ratio of seismic data.
- non-local mean filtering /
- weighting function /
- local similarity /
- abnormal amplitude noise /
- random noise

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References

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