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### Preparation
To fine-tune a stable diffusion model, you need to obtain the pre-trained stable diffusion models following their [instructions](https://github.com/CompVis/stable-diffusion#stable-diffusion-v1). Weights can be downloads on [HuggingFace](https://huggingface.co/CompVis). You can decide which version of checkpoint to use, but I use ```sd-v1-4-full-ema.ckpt```.
We also need to create a set of images for regularization, as the fine-tuning algorithm of Dreambooth requires that. Details of the algorithm can be found in the paper. The text prompt can be ```phito of a xxx```, where ```xxx``` is a word that describes the class of your object, such as ```dog```. The command is
We also need to create a set of images for regularization, as the fine-tuning algorithm of Dreambooth requires that. Details of the algorithm can be found in the paper. The text prompt can be ```photo of a xxx```, where ```xxx``` is a word that describes the class of your object, such as ```dog```. The command is
```
python scripts/stable_txt2img.py --ddim_eta 0.0 --n_samples 8 --n_iter 1 --scale 10.0 --ddim_steps 50 --ckpt /path/to/original/stable-diffusion/sd-v1-4-full-ema.ckpt --prompt "a photo of a xxx"
python scripts/stable_txt2img.py --ddim_eta 0.0 --n_samples 8 --n_iter 1 --scale 10.0 --ddim_steps 50 --ckpt /path/to/original/stable-diffusion/sd-v1-4-full-ema.ckpt --prompt "a photo of a <xxx>"
```
I generate 8 images for regularization. After that, save the generated images (separately, one image per ```.png``` file) at ```/root/to/regularization/images```.
### Training
Training can be done by running the following command
```
python main.py --base configs/stable-diffusion/v1-finetune_unfrozen.yaml
-t
--actual_resume /path/to/original/stable-diffusion/sd-v1-4-full-ema.ckpt
-n <job name>
--gpus 0,
--data_root /root/to/training/images
--reg_data_root /root/to/regularization/images
--class_word <xxx>
```
### Generation