Glossary

AI headshot terms, defined.

Quick definitions for the technical terms behind AI headshot generation.

• AI Headshot Glossary

  Plain-English definitions for AI headshot, InstantID, Real-ESRGAN, diffusion model, LoRA, and more.

• AI Headshot

  What an AI headshot is, how it works, and how it differs from a real photo.

• InstantID

  Identity-preserving image generation from a single photo.

• Face Embedding

  Numerical representation of a face used to condition generative models.

• Real-ESRGAN

  Open-source super-resolution upscale used to preserve skin detail.

• Stable Diffusion

  The open-source diffusion model family behind most AI image tools.

• Diffusion Model

  How diffusion models generate images by progressively denoising.

• LoRA

  Low-rank adaptation, a popular fine-tuning method for image models.

• Identity Preservation

  Keeping a person recognizable through AI image generation.

• Image Upscaling

  Increasing image resolution while preserving or enhancing detail.

• Professional Headshot

  What makes a headshot professional, from lighting to background.