Vanishing points are an important concept in 3D vision. Many papers related to them are using a notation called Gaussian sphere representation, which I find hard to understand at the beginning. Therefore I write this blog. This document will summarize what vanishing points (and their “Gaussian sphere representation”) are, how to represent them, what information they encode, how to find them, and why they are useful.
WARNING: This article is for people who want to learn more about vanishing points.