Greetings, I do not doubt that GOCR, teseract, etc. do a fine job with basic OCR tasks. Unfortunately, I am brushing up on my orbital mechanics and my understanding is that these engines are not equipped to handle intense mathematics. I am trying to clean up scans to increase performance in infty-reader. How did you go about cleaning up the contrast/shadow? That might be enough to help out infty-reader in producing more accurate translations. I can decipher the early stufff on Newtonian gravitation and Homan transfers, but I'd like to have more confidence that wwhen I get to gyroscopic stability and Euler parameters that the OCR output is fairly accurate. Thanks:-) >The ocr programs like tersseract and others have a clean up function >automatically. > >Using GIMP is to labor intensive for books, but perhaps the contrast and >shadow of the page can be edited out for a few pages. I've done that, and >saved the pages in the format that tesseract needed. > >Best wishes, > >David Ring _________________________________________________________________ Express your personality in color! Preview and select themes for Hotmail®. http://www.windowslive-hotmail.com/LearnMore/personalize.aspx?ocid=PID23391::T:WLMTAGL:ON:WL:en-US:WM_HYGN_express:082009