README.md

Softwares and Tutorials

This Repository enlist the list of open source softwares, which collects useful links for acoustics, ultrasound, seismic modeling and inversion.

Wave Modelling and Inversion

• 2D/3D modelling Finite Difference (FD) codes SOFI.
• SPECFEM2D – Spectral element method for modelling forward and adjoint wave propagation in 2D.
• SPECFEM3D – Spectral element method for modelling forward and adjoint wave propagation in 3D.
• DENISE-2D Finite Difference time-domain modeling for waveform inversion.
• SAVA: 3D seismic finite-difference modelling for Waveform Inversion and Imaging.
• OpenFOAM is a CFD software developed primarily by OpenCFD.

Python Packages

• adjTomo ('adjoint tomography') for tools related to the scientific problems of imaging, adjoint tomography and full waveform inversion. The adjTomo is connected with the, SPECFEM.
• ttcrpy for computing traveltimes and raytracing using the Fast-Sweeping Method, the Shortest-Path Method, and the Dynamic Shortest-Path Method.
• pyGIMLi is a finite-element and finite-volume solvers developed for multi-method modelling and inversion in 2D and 3D.
• Deepwave, a Finite Difference (FD) wave propagation modules for PyTorch, for applications such as imaging/inversion.
• pykonal: Travel-time calculator based on the fast-marching method solution to the Eikonal equation.
• TOY2DAC is a 2D Acoustic frequency-domain Full Waveform modeling and inversion code based on Fortran
• TOMO2D: A C++ package for 2-D joint refraction and reflection traveltime tomography
  • Examples of TOMO2D results, and advice to run the tomo2d.
  • A collection of Python algorithms to format seismic data for traveltime tomography in TOMO2D and full-waveform inversion in TOY2DAC
• Pyfwi: A Python Package for Full-Waveform Inversion and Reservoir Monitoring
• PyLops: a backend-agnostic, idiomatic, matrix-free library of linear operators and related computations

Symbolic codes

• Devito: Symbolic Finite Difference Computation Python package -Devito-Examples (acoustic RTM, Acoustic FWI)
  • Acoustic Full-waveform inversion example using Devito
  • The Devito DSL - From equations to code in a few lines of Python, Acoustic FWI example
• Stride - A Finite-difference time-domain solver written in Devito for modelling and optimisation framework for medical ultrasound
• The Julia Devito Inversion framework for FWI, LSRTM, (JUDI.jl)
• iredrake is an automated system for the portable solution of partial differential equations using the finite element method (FEM).

MATLAB based

+SimpleFWI: small FDFD Matlab code for the basic building blocks to test optimization algorithms on FWI.

• Frequency-domain finite-difference package for solving 2D visco-acoustic wave equation
• PStomo: A collection of tools for "PStomo_eq" tomography software.
• ttcrpy for computing traveltimes and raytracing using the Fast-Sweeping Method, the Shortest-Path Method, and the Dynamic Shortest-Path Method.

Machine learning

• Physics-Informed Deep Learning for Wave Propagation and Full Waveform Inversions

CUDA

• NVIDIA Modulus
  • Example: 2D Seismic Wave Propagation
  • Example: 2D Acoustic wave propagation

Other websites

Tutorials

• Scientific Research CodesGithub)
• Society of Exploration Geophysicists
• Deep imaging group: Seismology Tutorials

Misc

• TomoPhantomGithub)