Understanding the terminologies

Before we begin using Stable Diffusion to enhance image quality, it is beneficial to understand the common terminologies associated with this process. Three related terms you may encounter in articles or books on Stable Diffusion are image interpolation, image upscale, and image super-resolution. These techniques aim to improve the resolution of an image, but they differ in their methods and outcomes. Familiarizing yourself with these terms will help you better understand how Stable Diffusion and other image enhancement tools work:

• Image interpolation stands out as the simplest and most prevalent method to upscale images. It functions by approximating new pixel values based on the existing pixels within an image. Various interpolation methods exist, each with its strengths and weaknesses. Some of the most commonly used interpolation methods include nearest-neighbor interpolation [6], bilinear interpolation [7], bicubic interpolation [8], and...