Rochester and NVIDIA Build Pixel-Space Diffusion Model for Precise Local Image Edits

URochester_Hajim · reddit · 2026-10-30

Image generators like ChatGPT and Gemini often wreck unrelated details when asked to fix one small thing. Researchers at the University of Rochester and NVIDIA attribute this to the latent-space diffusion architecture behind most state-of-the-art models: concepts are compressed into compact representations for efficiency, sacrificing pixel-level control.

Their PixelDiffusion (PixeLDIT) approach runs diffusion directly in pixel space, letting users make precise per-pixel edits without unintentionally altering the rest of the image.

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