Build a Document Scanner

In this lesson, we’ll use most of the OpenCV functions and techniques to create a document scanner. For that, we’ll need an image that contains a document. The document scanner will find the edges of the document and crop the document, giving an output image containing the document only. The output image will remove any unnecessary areas outside the document. Follow the given steps, and write the code in the code widget at the end of the project.

We’ll create different functions to separate our work. First, we’ll import our libraries and image. You can even connect it to your webcam as a personal project.

Get image edges

The basic purpose of a document scanner is to get the edges of our document. We use an edge detection technique to detect edges.