Optical character recognition : this software takes a
scanned image and convert the characters in the image
into a computer character. The document can then be
edited. This is a tricky process, document must be
carefully checked for wrong conversion - wrong
conversion is often written in red. But to get best
results, make it very crisp and clean this will reduce
errors during scanning process. Also run manually
checking for proper translation - the key here is to make
sure that the image is not blurry.

To do this with your smartphone - android, is possible. I
will make it brief and simple with pictorial illustrations
on how to do it.
1. Download text scanner From Google play click here
to download .

2. Open the app after successfully installation.
3.You have option either to take new pictures or upload
from your phone gallery.
4. Crop the image and press go and wait as it scan the
image.

Note. There are many OCR software available but I
recommend that you use text scanner, because it free
and efficient. Also works offline

Source www.uchehub.com.ng/2018/01/how-to-scann-image-and-extract.html?m=1

Ok. thanks