Real cameras can actually fight AI fakes using…autofocus? Sony is using a neat 3D trick to prove that videos were shot with a camera

Summary

Sony has expanded its Camera Verify AI detection software to include video analysis, aiming to combat AI-generated fakes. The beta program, licensed for journalists, now uses 3D depth data, likely derived from the camera's autofocus system, to verify content authenticity. This depth mapping helps differentiate footage of real-world 3D scenes from images of 2D prints or screens, preventing manipulation. The software also checks digital signatures and capture timestamps, with video support rolling out to specific Sony camera models.

Key points

• Sony's Camera Verify software now analyzes video for AI fakes.
• The software uses 3D depth data from autofocus systems to verify authenticity.
• It distinguishes real-world 3D scenes from 2D captures like screens or prints.
• Verification also includes digital signatures and capture timestamps.