Can someone suggest me an open source library for OCR functionality for seven segment display. I have tried with Google vision Sample, but the results are very bad.
Have a look at Microsoft Cognitive Services.
Microsoft Cognitive Services lets you build apps using powerful algorithms in just a few lines of code with 22 APIs to help us do everything from facial recognition to OCR. The Computer Vision API allows us to extract rich information from images, such as recognizing objects or extracting text with OCR.
Check theTutorial: https://devblogs.microsoft.com/xamarin/performing-ocr-for-ios-android-and-windows-with-microsoft-cognitive-services/
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