What is the best way to do basic numbers recognition?

Question

I would like to detect basic English Numbers from 0 to 9 using simple OCR on Android. I've looked for OCR for Android, but it is too complex for my main purpose, is there any simpler way to just detect numbers on Android?

Answer 1

A simple alternative is to predefine the digits as bitmaps, and to find them using normalized cross-correlation.
There are a lot of disadvantages in this method:

• No robustness to different fonts
• No robustness to scale of numbers
• ...

But maybe that is what you need just to get started with.