Logo

Seismic Tomography, Image Segmentation and Deep Learning 137

1d77a079032a690bf21674c6848a9997f134a646

Speaker

Xu Yang, University of California, Santa Barbara

Time

2020.05.20 14:00-15:00

Venue

Online—ZOOM APP

ZOOM Info

Conference ID: 973-479-66457
PIN Code: 112683

Abstract

Seismic tomography is a scientific field using realistic earthquake data to analyze the inner structure of our Earth. In this talk, we present a natural connection of three-dimensional seismic tomography to image segmentation problems, which we solve efficiently using deep neural networks with a UNet architecture. It is challenging to obtain sufficient valid data to train neural networks, and we overcome it by developing a fast synthetic data generator using multi-scale asymptotic analysis. The accuracy and parallelizability of the proposed algorithm is illustrated by comparing to the spectral element method. Moreover, the developed multi-scale algorithm can be also used to accelerate various standard applications in seismic tomography, including seismic traveltime tomography and full waveform inversion.

Sponsors

Video