What techniques anonymize images and video?

Question

Accepted Answer

Facial detection + blurring/pixelation, metadata stripping, and AI-based synthetic replacement of faces.

Technique
What it does

Facial recognition & blurring
Computer-vision algorithms detect faces, then blur/pixelate/black-box them to prevent identification while keeping scene context.

Metadata stripping
Automated removal of embedded EXIF metadata — GPS, device info, timestamps, author details.

Synthetic replacement
GAN-based techniques replace real faces with synthetic ones, preserving expression and demographics while protecting identity.

Why synthetic replacement is clever: blurring destroys data (you lose the face entirely); GAN replacement keeps the image analytically useful (you can still study expressions, crowd demographics) while breaking the link to the real person.

Technique	What it does
Facial recognition & blurring	Computer-vision algorithms detect faces, then blur/pixelate/black-box them to prevent identification while keeping scene context.
Metadata stripping	Automated removal of embedded EXIF metadata — GPS, device info, timestamps, author details.
Synthetic replacement	GAN-based techniques replace real faces with synthetic ones, preserving expression and demographics while protecting identity.