wu-forensics 1.0.2

Epistemic media forensics toolkit - structured uncertainty for courts

Wu - Epistemic Media Forensics Toolkit

Detects manipulated media with structured uncertainty output. Hopefully it will be suitable for court admissibility (Daubert standard).

Named after Chien-Shiung Wu (1912-1997), who disproved parity conservation and found asymmetries everyone assumed didn't exist.

Installation

pip install wu-forensics

Quick Start

# Analyze a photo
wu analyze suspicious_photo.jpg

# JSON output
wu analyze photo.jpg --json

# Batch analysis
wu batch *.jpg --output reports/

Python API

from wu import WuAnalyzer

analyzer = WuAnalyzer()
result = analyzer.analyze("photo.jpg")

print(result.overall)  # OverallAssessment.NO_ANOMALIES
print(result.to_json())

What Wu Detects (Phase 0)

Phase 0 focuses on metadata-only analysis with zero ML dependencies:

• Device impossibilities: "iPhone 6 claiming 4K resolution" is physically impossible
• Editing software signatures: Adobe Photoshop, FFmpeg, etc.
• AI generation signatures: DALL-E, Midjourney, Stable Diffusion, Sora, etc.
• Timestamp inconsistencies: Future dates, modification before capture
• Stripped metadata: Intentionally removed EXIF data

Epistemic States

Unlike binary classifiers, Wu reports structured uncertainty:

State	Meaning
CONSISTENT	No anomalies detected (not proof of authenticity)
INCONSISTENT	Clear contradictions found
SUSPICIOUS	Anomalies that warrant investigation
UNCERTAIN	Insufficient data for analysis

Court Admissibility

Wu is designed with the Daubert standard in mind:

1. Testable methodology: Every finding is reproducible
2. Known error rates: Confidence levels are explicit
3. Peer review: Academic citations throughout
4. General acceptance: Based on EXIF standards (JEITA CP-3451C)

References

• Wu, C.S. et al. (1957). Experimental Test of Parity Conservation in Beta Decay. Physical Review, 105(4), 1413-1415.
• Farid, H. (2016). Photo Forensics. MIT Press.
• JEITA CP-3451C (Exif 2.32 specification)
• Daubert v. Merrell Dow Pharmaceuticals, 509 U.S. 579 (1993)

License

MIT