Scan Tailor Adcanced - doesn't recognize text

[nightshift]

Using Advanced ( this onehttps://github.com/ScanTailor-Advanced/ ... r-advanced) and I'm in the final steps setting output. The book's design is very much like a textbook, where chapter introductions have a pretty picture as a background with text over top. This - plus maybe the colors involved - is causing some problems. (attached images are scaled down)

This is the base page, with most of the scan tailor processing applied:

When processing output with the settings here:

Screenshot from 2024-03-25 13-25-34.png (32.7 KiB) Viewed 303 times

Plus setting picture areas that leave the text free
I get THIS result

Is there a setting somewhere that I'm missing? Something I should have chosen differently that will give me a foreground split that will include the "Materials" heading so that OCR will see it?

[nightshift]

Found it! I had to increase the threshold.

The documentation on what each option does, and when you should or shouldn't consider using/changing values, is really light. Most of it is "this feature exists" but doesn't say much about what it does or how to use it.

Anyone have a guide on what everything does?