You would need to integrate your application with some OCR service, which can convert image to text. I don't think Pega does give you this capability OOTB. You may give https://sourceforge.net/projects/javaocr/ a try or look for some better licensed tool. 

Hi,

I agree to what Praveen said. Optical Character Recognition ( OCR ) is not available OOTB but can be integrated with PRPC. Found this article published on Pega.com where it talks about the same. https://www.pega.com/system/files/docs/2016/Apr/Pega-BPM-to-Simplify-Pharmacovigilance-Processes_Oct14.pdf