Overview
Image-to-image provides a direct control that text prompts alone cannot: the degree to which an existing composition or design should survive. It can be used to reinterpret an image while retaining part of its arrangement, or to introduce controlled variation without starting from an unrelated noise pattern.
It is also the mechanism behind the stronger upscaling method taught in the next lesson. Tiled upscaling works because each tile is passed through image-to-image at low denoise, allowing new detail while retaining most of the original image.