Human-Computer Interaction & Vision Glossary

• MediaPipe: Open-source cross-platform machine learning framework developed by Google for perceptual computing.
• Landmark: A normalized 3D spatial coordinate representing an anatomical joint (e.g. fingertip, wrist).
• Refractory Period: A temporary lockout duration following a gesture event preventing rapid accidental repeat triggers.
• Device Pixel Ratio (DPR): The ratio between physical display pixels and logical CSS pixels.