Advanced Grain Reconstruction
Grain reconstruction introduced the parameters of calcGrains - the threshold angle, 'alpha' and 'minPixel'. This page is about replacing its parts rather than tuning them. It helps to know that calcGrains does three things:
- it partitions the measured surface into cells, one per measurement
- it decides, for every pair of neighbouring cells, whether a grain boundary separates them
- it collects the cells that are not separated into grains
The following sections deal with the second step, then with the first. Two things that are often done before a reconstruction have pages of their own: denoising the orientation data and filling missing pixels.
Throughout this page we use the same subregion of the forsterite data set as the basic page.