Document Scanner using OpenCV (HoughLines Approach) | by Joel Johnson | Analytics Vidhya | Medium
transform - How to find the document edges in various coloured backgrounds using opencv python? [Document Scanning in various backgrounds] - Stack Overflow
Machine vision Open CV Project II document scanning
I built my own Document Scanner using OpenCV and Python : r/learnmachinelearning
GitHub - badarsh2/AndroidDocumentScanner: Android Document Scanner using OpenCV C++ and Android NDK
Learn OpenCV by Building a Document Scanner | Don't Repeat Yourself