---
library_name: transformers
tags:
  - image-classification
  - ai-generated-image-detection
  - dinov2
  - pgc
license: other
---

# AiorScam PGC Deployment Mirror

This repository mirrors the assets needed by the `aiorscam/pgc-inference`
dedicated endpoint implementation.

## Sources

- PGC source repository: https://github.com/xiaoyu6868/PGC
- PGC upstream commit used for parity review:
  `e049d1ed97cc0ed066b61d445a7cced216bf550c`
- PGC checkpoints source: https://modelscope.cn/models/xiaoyuzhou68/PGC_ckpt
- DINOv2 backbone source: https://huggingface.co/facebook/dinov2-large

## Layout

```text
checkpoints/
  PGC_train_sdv1_4_ckpt.pth
  PGC_train_progan_ckpt.pth
  PGC_train_progan_sdv1_4_ckpt.pth
dinov2-large/
  config.json
  model.safetensors
  preprocessor_config.json
```

## Endpoint Configuration

The default endpoint variant is the joint PGC checkpoint:

```text
PGC_VARIANT=progan_sdv1_4
PGC_CHECKPOINT_DIR=/repository/checkpoints
PGC_DINO_PRETRAINED_ROOT=/repository
PGC_FAKE_THRESHOLD=0.5
PGC_REAL_THRESHOLD=0.5
```

Supported variants are `sdv1_4`, `progan`, and `progan_sdv1_4`.

## Notes

PGC is a promptless binary real/synthetic image detector. The deployed endpoint
does not send or synthesize text prompts; parity with the author implementation
comes from the DINOv2 preprocessing path, checkpoint selection, and binary
decision threshold.