True command line stitching without showing any windows. Launch PTGui with the -stitchnogui flag, followed by one or more project files and/or batch lists. The command does not return until stitching has finished, so this makes it easy to include PTGui as part of a larger batch process.
On macOS launch as follows:
"/Applications/PTGui Pro.app/Contents/MacOS/PTGui Pro" -stitchnogui project1.pts project2.pts batchlist.ptgbatch
START "" /B "C:\Program Files\PTGui\PTGui.exe" -stitchnogui project1.pts project2.pts batchlist.ptgbatch