Building Document Scanner Using Computer Vision

In this digital era, scanning documents is essential for filling online application forms. This paper presents building mobile document Scanner using Computer Vision. OpenCV is an open-source computer vision and machine learning software library which is used to perform all the image processing tasks effectively. In this application, several image processing techniques are used such as image re-sizing, Grayscale conversion, applying Gaussian blur, Edge detection, finding Contours, Perspective transformation, and Adaptive threshold. By implementing all these techniques on a given scanned image, the system can accurately detect edges automatically and produces required scanned documents from images captured through mobile camera. The accuracy of the scanned documents compared with 240p and 720p cameras. This application makes life more convenient while also promoting a paperless, eco-friendly way of working.