Thresholding is a level applied to grayscale data to separate interesting data (black) from the background (white).
IAT (Intelligent Adaptive Thresholding) is a more advanced thresholding type where the level to separate black from white is continually altered in response to the background darkness.
Consider the dirty drawing below:
If it is scanned using simple thresholding, some of the detail is lost (above, left).
If it is scanned using IAT, the detail becomes visible (above, right).
The SmartWorks EZ software included with every Colortrac SmartLF large format scanner includes three IAT settings. SmartWorks Pro software has comprehensive IAT where you can make changes in real time on the screen by adjusting two slider bars.
IAT makes it quick and easy to create high quality scans from poor quality originals.