photoVerse

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PhotoVerse is a text-to-image generation system that produces personalized images from text prompts using a single facial photograph.

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# PhotoVerse: Tuning-Free Image Customization with Text-to-Image Diffusion Models (Unofficial Repo)
Implemented by: [Ido Nahum](https://github.com/idonahum), [Haim Zisman](https://github.com/Haimzis)

[Paper](https://arxiv.org/abs/2309.05793) | [Official Website](https://photoverse2d.github.io/)
</div>

✅ only one facial photograph.&nbsp;&nbsp;&nbsp;&nbsp;
 ✅ no test-time tuning.&nbsp;&nbsp;&nbsp;&nbsp;
 ✅ demonstrate exceptional ID preservation and editability.&nbsp;&nbsp;&nbsp;&nbsp;

## Overview

PhotoVerse introduces a novel methodology for personalized text-to-image generation, enabling users to customize images based on specific concepts and prompts. Unlike existing approaches, PhotoVerse eliminates the need for test-time tuning and relies solely on a single facial photo of the target identity, significantly reducing resource costs and improving efficiency.

## Methodology

PhotoVerse incorporates a dual-branch conditioning mechanism in both text and image domains, providing effective control over the image generation process. Additionally, it introduces facial identity loss as a novel component to enhance the preservation of identity during training. After a single training phase, PhotoVerse enables the generation of high-quality images within seconds.

![Framework](https://raw.githubusercontent.com/idonahum/photoVerse/main/figs/framework.png)

## Extension: Cosine Similarity Loss & Evaluation

In addition to generating images, PhotoVerse incorporates an extension for evaluating the similarity between the generated face and the ground truth (gt) image. This evaluation utilizes cosine similarity metrics calculated with the assistance of the `facenet_pytorch` module, in addition to the `arcface` module. By leveraging face embedding modules, our generated images tend to be more realistic and similar to the real person, strengthening the personalization capability of PhotoVerse.

## Gallery

Here we present high-quality generated results achieved by leveraging a single reference image and a variety of prompts.

![Image Grid](https://raw.githubusercontent.com/idonahum/photoVerse/main/figs/image_grid.png)

## Instructions

### Pretrained-weights:
We've shared our experimental models, and we recommend re-training with additional computational resources to achieve even better results.

Link to our weights: [Download](https://tinyurl.com/PhotoVerse)

### 1. Docker Setup (Recommended)

Make sure you have Docker installed on your system. Then, follow these steps:

#### Build the Docker image
```bash
docker build -t photoverse .
```
#### Train with Docker container in a single command
```bash
./train_container_exec.sh
```
#### Generate with Docker container in a single command
```bash
./generate_container_exec.sh
```

### 2. Dataset Preparation

To prepare the dataset, run the following script:
```bash
python prepare_celebhqmasks.py --save_path='./CelebaHQMaskDataset' --gdrive_file_id='1RGiGeumP_xVDN4RBC0K2m7Vh43IKSUPn' --force_download --force_extract --force_mask_creation --force_split
```

### 3. Training

Execute the training script using the following command:
```bash
accelerate launch --config_file single_gpu.json train.py --data_root_path CelebaHQMaskDataset/train --mask_subfolder masks --output_dir photoverse_arcface_lora --max_train_steps 40000 --train_batch_size 16  --pretrained_photoverse_path weights/photoverse_final_with_lora_config.pt --report_to wandb --face_loss facenet
```

### 4. Inference

Run inference using pre-trained models by executing the following command:
```bash
python generate.py --model_path "runwayml/stable-diffusion-v1-5" --extra_num_tokens 4 --encoder_layers_idx 4 8 12 16 --guidance_scale 1.0 --checkpoint_path "exp1/40k_simple.pt" --input_image_path 'CelebaHQMaskDataset/train/images/23.jpg' --output_image_path "generated_image" --num_timesteps 50 --results_dir "results" --text "a photo of a {}"
```
Adjust the paths and parameters as necessary for your setup.

## Tips
1. Use negative prompts to prevent unwanted artifacts or features from appearing. This makes personalization more efficient.

2. The attached results are based on a complete user experience without using any face mask before generating. While it's recommended to use a mask for the clip embedding to potentially enhance results, it is not essential for achieving great outcomes.

3. Fine-tune the guidance scale to improve the balance between creativity and personalization.

## Contributions
Further improvements by the open community are welcome. Please open an issue and share your improvements, including your results and specifying your changes. Ensure the code is well-written and documented. We will be more than happy to review and confirm your pull request.

Highly relevant contributions would include:
1. Integrating a segmentation model into the generating pipeline for extracting face masks for the clip embedding.

2. Improving the Face Loss, which is currently based on the cosine similarity of the whole picture rather than the face alone. Segmenting the generated face before calculating Facenet Loss, in a way that preserves gradients would be a significant improvement.

## License

This project is licensed under the MIT License - see the [LICENSE](LICENSE) file for details.

If you use this code in your projects, we would appreciate a mention or citation of this repository.

## BibTeX

```bibtex
@misc{chen2023photoverse,
  title={PhotoVerse: Tuning-Free Image Customization with Text-to-Image Diffusion Models},
  author={Chen, Li and Zhao, Mengyi and Liu, Yiheng and Ding, Mingxu and Song, Yangyang and Wang, Shizun and Wang, Xu and Yang, Hao and Liu, Jing and Du, Kang and others},
  booktitle={arXiv preprint arxiv:2309.05793},
  year={2023},
  archivePrefix={arXiv},
  primaryClass={cs.CV}
}

photoVerse

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