I'm trying to develop a Windows Phone 8.1 App but I need to recognize some numbers from different Displays.

![enter image description here](https://i.stack.imgur.com/7YinY.png)

![enter image description here](https://i.stack.imgur.com/6FjbB.png)

![enter image description here](https://i.stack.imgur.com/wOtFx.jpg)

I was following this example:

<http://bsubramanyamraju.blogspot.com/2014/08/windowsphone-81-optical-character.html>

That is using the Microsoft OCR Runtime Library:

<https://www.nuget.org/packages/Microsoft.Windows.Ocr/>

However, it doesn't work when I'm trying to recognize those kinds of pics. Even I found this site:

<https://www.unix-ag.uni-kl.de/~auerswal/ssocr/>

Does anyone have a recommendation? Or Does anyone know any code related to it? 

Thank for your worthy knowledge.