Heun

The Heun text-to-image diffusion sampler is a variant of the Euler Ancestral sampler that is more accurate but also slower. It works by sampling noise from the diffusion process and then subtracting it from the image, but it also takes into account the gradient of the diffusion process at the current image. This helps to improve the stability of the sampling process and to generate more realistic images.

The Heun text-to-image diffusion sampler is a good choice for applications where accuracy is important, such as generating images for medical or scientific applications. It is also a good choice for applications where realism is important, such as generating images for product visualization or architectural design.