What Are Diffusion Models?

Overview

Consider the scenario of dispersing an ink drop into a container of water. Initially, the drop remains easily distinguishable. However, if given ample time, the molecules will progressively disperse uniformly throughout the container, resulting in a noticeable alteration of the water’s color. This is a fundamental illustration of the principles governing diffusion. Now, let’s explore how the concept of diffusion serves as a source of inspiration for diffusion models.