Full-waveform inversion (FWI) is often the method of choice for addressing the most challenging scenarios in seismic imaging. While FWI has been around for quite some time, the workflows are continuously developed and more case studies are becoming available to illustrate the power of the method. This special section of The Leading Edge presents seven papers that not only provide an overview of the progress of the method but also suggest new tweaks to the algorithm and several new case studies.

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