![Multimodal AIGC Detection System (Core Diagram), a horizontal flowchart.
It can be represented as "Input → Multiple Signals → Decision → Handling":
┌──────────────────────────────────────────┐
│ Multimodal AIGC Security Detection System │
└──────────────────────────────────────────┘
[Input Content]
Text / Image / Video / Audio
↓
┌──────────────────────────────────────────┐
│ Multiple Signal Detection Layer (Core) │
└──────────────────────────────────────────┘
① Source Signal
- Watermark (Explicit / Implicit)
- C2PA Metadata
- Generation Tool Fingerprint
② Content Signal
- Text AI Detection Model
- Image/Video Generation Detection
- Deepfake Features (Face, Frequency Domain)
③ Behavior Signal
- Batch Generation
- Publishing Frequency
- Content Similarity
- Agent Behavior Trajectory
④ Context Signal
- Hotspot Events
- Sensitive Figures
- Abnormal Propagation Path
↓
┌──────────────────────────────────────────┐
│ Risk Fusion & Grading Decision │
└──────────────────────────────────────────┘
- Multi-Signal Fusion Scoring
- Risk Levels R1 ~ R5
↓
┌──────────────────────────────────────────┐
│ Governance and Handling Strategies │
└──────────────────────────────────────────┘
- Pass
- Risk Labeling
- Downgrade / Traffic Limiting
- Intercept
- Manual Review](/_next/image?url=https%3A%2F%2Fpub-8c0ddfa5c0454d40822bc9944fe6f303.r2.dev%2Fai-drawings%2FKcbDvMhcVkeNLyqeUPMgBUBpsfqZSdZc%2Fd57ce067-2bfa-4882-9f92-d11c76f68c6f%2F8230df52-4095-4ad2-8087-64a62c47413c.png&w=3840&q=75)
Multimodal AIGC Detection System (Core Diagram), a horizontal flowchart. It can be represented as "Input → Multiple Signals → Decision → Handling": ┌──────────────────────────────────────────┐ │ Multimodal AIGC Security Detection System │ └──────────────────────────────────────────┘ [Input Content] Text / Image / Video / Audio ↓ ┌──────────────────────────────────────────┐ │ Multiple Signal Detection Layer (Core) │ └──────────────────────────────────────────┘ ① Source Signal - Watermark (Explicit / Implicit) - C2PA Metadata - Generation Tool Fingerprint ② Content Signal - Text AI Detection Model - Image/Video Generation Detection - Deepfake Features (Face, Frequency Domain) ③ Behavior Signal - Batch Generation - Publishing Frequency - Content Similarity - Agent Behavior Trajectory ④ Context Signal - Hotspot Events - Sensitive Figures - Abnormal Propagation Path ↓ ┌──────────────────────────────────────────┐ │ Risk Fusion & Grading Decision │ └──────────────────────────────────────────┘ - Multi-Signal Fusion Scoring - Risk Levels R1 ~ R5 ↓ ┌──────────────────────────────────────────┐ │ Governance and Handling Strategies │ └──────────────────────────────────────────┘ - Pass - Risk Labeling - Downgrade / Traffic Limiting - Intercept - Manual Review
```python import os import re import numpy as np import pand...