DPM++ SDE (Karras)

Here are some key points about the DPM++ SDE sampler developed by Karras:

Karras introduced several optimizations to the sampling process:

Together these advances enable generating photorealistic images with unprecedented quality and coherence.

Karras demonstrated capabilities by creating human faces, cats, landscapes that are essentially indistinguishable from real images.

The optimized DPM++ sampler addresses issues like color deterioration and delivers excellent sample fidelity.

DPM++ incorporates predictor preprocessing, improved timestep scaling, corrector networks and other innovations to achieve much more stable and higher-quality sampling from diffusion models.