[sane-devel] gain/offset tables

[nathan rutman]

Thinking about the calibration routine for my scanner (Canon FB630U),
seems to me this is probably a common issue. 

There's a black and a white scannable area inside the housing of my
scanner.  It looks like I need to convert scans of these areas under 3
different lighting conditions into the per-ccd-element gain/offset
tables.  ("Looks like", because that's what the Windows driver seems to 
do.)

Anyone's scanner do something similar?  Got code or math I can steal?


--
nathan at gordian.com