Wavelet-domain PRNU based image authentication system for verifying whether an image originates from an enrolled camera sensor.

This project implements a forensic image authentication pipeline using Photo Response Non-Uniformity (PRNU) extracted in the wavelet domain. The system verifies whether a test image matches an enrolled camera’s sensor fingerprint.

⚠️ This project focuses on camera authentication, not absolute AI image detection.

• Wavelet-domain noise residual extraction (DB8)
• PRNU fingerprint construction via averaging
• Correlation-based matching
• Threshold-based decision (REAL / NOT AUTHENTIC / UNCERTAIN)