I\'m using OpenCV on the iPhone and need to detect numbers in an image. I split the image into smaller images so each image has only one number (1-9). All numbers are printe
Tesseract is also a nice free OCR engine that is readily available for iPhone and allows you to use your own sets of training images:
http://tinsuke.wordpress.com/2011/11/01/how-to-compile-and-use-tesseract-3-01-on-ios-sdk-5/