Topic OMR = Opitical Mark Readering

Optical mark recognition (OMR) is the process of capturing human-marked data from document forms such as surveys and tests. (more details at https://en.wikipedia.org/wiki/Optical_mark_recognition)
http://www.formscanner.org/
Best free software = FormScanner www.formscanner.org 
 
Formscanner is a free, open-source OMR (optical mark recognition) software for scanning and grading user-filled, multiple choice forms. Formscanner is easy to use, effective, and completely free of cost and advertisements.  Users scan the forms and, in just a couple of steps, they have a spreadsheet with students' scores, answers to individual questions, and detailed analysis of the class' perfomance.  Other OMR software costs hundreds, but FormScanner is open-source, community-supported, easy-to-use, and excellent at what it does.
http://www.formscanner.org/

Poster Overview
https://picasaweb.google.com/116277459022068321775/6413793739716500945#6413796154437750722


Example Course Evaluation with 30 Questions (Date + ID)
https://picasaweb.google.com/116277459022068321775/6413793739716500945#6413793736958632594


https://sites.google.com/site/earthteamwork123/topic/omr-markread/OMR_Answer.jpg?attredirects=0

How to convert scanned images in a PDF (photocopy) back to Images Click Here