principles of diffusion models

  • revolutionized text-to-image synthesis by producing photorealistic, controllable images from textual prompts ex- Stable diffusion, DallE-3, Midjourney
  • used to generate 3d molecular structures and protein conformations by modeling spatial distributions of atoms. ex- DiffDock, RFdiffusion
  • video diffusion models extend image diffusion temporally learning dynamics and frame consistency. They can generate videos from text or still images. ex- Lumiere
  • diffusion models are applied to robot policy learning generating action trajectories from observations rather than pixel-wise noise
  • diffusion models generate realistic music and speech maintaining temporal coherence and style - ex stable audio, audio LDM

Evolution in Deep Generative methods:

  • EBM (Energy Based Methods)
  • VAE (Variational Auto-encoders)
  • NF (Normalizing Flows)
  • DPM (Diffusion Probabilistic Models)
  • NODE (Neural ODE)
  • NCSN (Noise Conditional Score Network)
  • DDPM (Denoising Diffusion Probabilistic Models)
  • Score SDE FM (Flow Matching)

Core Perspective on Diffusion Models

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