A difficult task

[Sandman]

Referenced thread:
OCR Scan Specific Number
https://www.b4x.com/android/forum/threads/ocr-scan-specific-number.105437/

I need help with regards to OCR. I have a lot of content but I want to scan only specific part (ie Only Numbers) eg. Scan credit card number but not the name and other details on the card, any assistance please?

This is a difficult task.

Relevant XKCD:

https://xkcd.com/1425/