I'm looking for the best solution to get information out of +- 90.000 images which have similar markup. An online example I found which is similiar to my cases:
http://www.fiteyes.com/sites/fiteyes.com/files/VisualField.Left.Humphrey.2006.01.02.web.png
I need the information as raw data to be able to process them further.
For the numeric "round-formed" parts of the image I need to know the location of the numbers to be able to compare them.
I was thinking about OCR software. Any advice in the software to use for my specific case. Open source / freeware would be preferred.