https://github.com/doug3236/scanner_refl_fix1. Provides a way to calibrate reflection scanners that will remove re-reflection errors from different scanners.
2. Provides a mechanism to make high quality ICC profiles necessary for high precision colorimetric scans.
It includes files for a 522 patch profile with a i1Pro 2 and 2871 patch file for those with an i1iSis.
Calibration of a scanner to remove re-reflection can be done with nothing other than a good printer. Making high quality ICC profiles requires either an XRite I1Pro 2 or i1iSis spectro but does nor require any other licensed software. It creates a CGATs RGBLAB file that is easily used with Graeme Gill's Argyll free software to make ICC profiles.
The github readme files has details on usage. Expect to be able to make scans that will have significant improvements over IT8. The average errors I get scanning prints from my Pro1000 are under .5 dE 1976 average.