Android Question custom text recognition from picture

[peacemaker]

HI, All

Please, help to plan for such task:
1) video or photo shooting by the fixed smartphone, with some extra constant LED backlight (extra torch)
2) objects are industrial mashines with dark and complex surface, having the digit ID like "3-101" ("3-IOI"), "123456" ... by various "fonts", handmade lines of digits.

Task is to recognize these IDs and fix the time of recognition.
Trying with Google Vision gives almost zero recognition probability, say "10" is recognized from "3-IOI" text, sometimes. But photo is dark, not pre-processed.

Is it possible to solve such task ?

 

[JordiCP]

You can use OpenCV to pre-process images applying low level manipulation functions (histogram equalisation, convert to grayscale, blur, erode, dilate, ...) if you already have your own recognition engine (Google Vision, Tesseract) and check if results improve.

If not, recognition can also be made with OpenCV, but you'll need to build a specific algorithm for it.