http://www.dailymotion.com/video/xqlt2sPDF Editor Pro for Mac can perform OCR on scanned PDF files in different languages. From this video tutorial, you will get to know how to edit scanned PDF text and images, annotate scanned PDF files on Mac without effort.
The video tutorial covers:
1. Perform OCR on scanned PDF file
2. Edit scanned PDF text
3. Annotate scanned PDF file
4. Edit images of scanned PDF file