Dear Wayne, Dear List,
you can find a tool to selectively threshold ROIs at:
http://www.stierlen1.homepage.t-online.de/Modellbau/3DScanner/roi_threshold.htmI developed it to threshold the images of the calibration patterns (Zhang
Calibration method). I must confess that it is written quick and dirty
style. I hope you like it anyway.
Best regards
Peter