Comparison of Convolutional Neural Networks for Dividing Seismic Sequences

Hye-Jin Moon, Hyeong-Tae Jou, Sang Hoon Lee, Han-Joon Kim and Hyunggu Jun

doi:10.32390/ksmer.2020.57.6.541

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2020 Vol.57, Issue 6 Preview Page Next Page

Research Paper

Comparison of Convolutional Neural Networks for Dividing Seismic Sequences 탄성파 층서 구분을 위한 합성곱 신경망 기법 비교 연구

December 2020. pp. 541-553

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Abstract

머신 러닝 기술은 탄성파탐사 분야로 그 적용 범위를 확장하고 있다. 탄성파 해석에서 중요한 탄성파 층서 구분에 머신 러닝의 적용 가능성을 알아보았다. 이미지 분야에 탁월한 결과를 보여온 합성곱 신경망 기법 중 4가지 모델을 네덜란드 F3 block에 적용시켰다. 4가지 모델은 ResNet34 모델, 인코더-디코더 형태를 가지는 U-Net, Residual U-Net, FD U-Net이다. 예측된 이미지의 정성적 분석 수행 후 정량적 분석을 위해 pixel accuracy, mean class accuracy, mean intersection over union, frequency weighted IU의 수식을 활용하였다. 본 연구의 분석 결과 ResNet34의 정확도 결과가 가장 낮았고, 인코더-디코더 형태를 가지는 모델들이 높은 정확도를 보여주었다. 그리고 계산에 필요한 파라미터수와 학습시간을 고려 할 때 U-Net이 가장 효율적임을 확인할 수 있었다.

키워드

머신 러닝

합성곱신경망

탄성파층서구분

인코더-디코더 모델

네덜란드 F3 block

Application of the machine learning technique is expanding to the field of seismic exploration. For the purpose of feasibility assessment, we applied the machine learning technique to seismic sequence identification, which is important in seismic interpretation. From among the convolutional neural network techniques used in image analysis, we applied four models to seismic data obtained in the F3 block, offshore Netherlands, which have yielded remarkable results. One of the four models was ResNet34. The others were encoder–decoder models: U-Net, Residual U-Net, and FD U-Net. We first performed a qualitative analysis of the predicted images and then conducted quantitative analysis using pixel accuracy, mean class accuracy, mean intersection over union, and frequency weighted IU equations. The numerical results showed that ResNet34 had the lowest accuracy and that the encoder–decoder type models had higher accuracy. Considering the number of parameters required for calculation and the learning time, we confirmed that U-Net is the most efficient model.

Keywords

Machine learning

Convolutional neural network

Seismic sequence identification

Encoder–decoder model

Netherlands F3 block

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Information

Publisher :The Korean Society of Mineral and Energy Resources Engineers
Publisher(Ko) :한국자원공학회
Journal Title :Journal of the Korean Society of Mineral and Energy Resources Engineers
Journal Title(Ko) :한국자원공학회지
Volume : 57
No :6
Pages :541-553
Received Date :2020. 09. 22
Revised Date :2020. 11. 20
Accepted Date : 2020. 12. 22
DOI :https://doi.org/10.32390/ksmer.2020.57.6.541

Journal of the Korean Society of Mineral and Energy Resources Engineers ISSN:2288-0291(Print) 2288-2790(Online) 한국자원공학회지

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