We will build, step by step, using live code, a form scanner using OpenCV inside a notebook. “I don’t know Python” you say? Don’t worry. Since we will be using .NET Interactive and OpenCVSharp, we will be able to code in our favorite programming language: C#. During this talk, we will transform an ordinary smartphone picture of a form into JSON. While doing so, you will become acquainted with C# Notebooks – little known in the .NET world but big in Python and the scientific community. Notebooks are a great way to interactively explore code, and we will use that to explore various computer vision challenges & solutions: Warping, Background Removal, Thresholding, OCR using Tesseract, and more.