ETSpy: A HyperSpy extension package for electron tomography data processing and reconstruction.

Electron tomography is a powerful tool for the three-dimensional characterization of materials at the nano- and atomic-scales. A typical workflow for tomography involves several pre-processing steps that may include spatial binning, image registration, and tilt-axis alignment depending upon the nature of the acquired data. Here we describe the capabilities of a new, open-source software package named ETSpy that builds upon the widely used HyperSpy package. The basic usage of the software and some specific applications are presented.