DreamPose

Official implementation of "DreamPose: Fashion Image-to-Video Synthesis via Stable Diffusion" by Johanna Karras, Aleksander Holynski, Ting-Chun Wang, and Ira Kemelmacher-Shlizerman.

• Project Page
• Paper

Demo

You can generate a video using DreamPose using our pretrained models.

1. Download and unzip the pretrained models inside demo/custom-chkpts.zip
2. Download and unzip the input poses inside demo/sample/poses.zip
3. Run demo.py using the command below:

   python test.py --epoch 499 --folder demo/custom-chkpts --pose_folder demo/sample/poses  --key_frame_path demo/sample/key_frame.png --s1 8 --s2 3 --n_steps 100 --output_dir demo/sample/results --custom_vae demo/custom-chkpts/vae_1499.pth
   

Download or Finetune Base Model

DreamPose is finetuned on the UBC Fashion Dataset from a pretrained Stable Diffusion checkpoint. You can download our pretrained base model from Google Drive, or finetune pretrained Stable Diffusion on your own image dataset. We train on 2 NVIDIA A100 GPUs.

accelerate launch --num_processes=4 train.py --pretrained_model_name_or_path="CompVis/stable-diffusion-v1-4" --instance_data_dir=../path/to/dataset --output_dir=checkpoints --resolution=512 --train_batch_size=2 --gradient_accumulation_steps=4 --learning_rate=5e-6 --lr_scheduler="constant" --lr_warmup_steps=0 --num_train_epochs=300 --run_name dreampose --dropout_rate=0.15 --revision "ebb811dd71cdc38a204ecbdd6ac5d580f529fd8c"

Finetune on Sample

In this next step, we finetune DreamPose on a one or more input frames to create a subject-specific model.

1. Finetune the UNet

   accelerate launch finetune-unet.py --pretrained_model_name_or_path="CompVis/stable-diffusion-v1-4" --instance_data_dir=demo/sample/train --output_dir=demo/custom-chkpts --resolution=512 --train_batch_size=1 --gradient_accumulation_steps=1 --learning_rate=1e-5 --num_train_epochs=500 --dropout_rate=0.0 --custom_chkpt=checkpoints/unet_epoch_20.pth --revision "ebb811dd71cdc38a204ecbdd6ac5d580f529fd8c"
   

2. Finetune the VAE decoder

   accelerate launch --num_processes=1 finetune-vae.py --pretrained_model_name_or_path="CompVis/stable-diffusion-v1-4"  --instance_data_dir=demo/sample/train --output_dir=demo/custom-chkpts --instance_prompt="" --resolution=512  --train_batch_size=4 --gradient_accumulation_steps=4 --learning_rate=5e-5 --num_train_epochs=1500 --run_name finetuning/ubc-vae --revision "ebb811dd71cdc38a204ecbdd6ac5d580f529fd8c"
   

Testing

Once you have finetuned your custom, subject-specific DreamPose model, you can generate frames using the following command:

python test.py --epoch 499 --folder demo/custom-chkpts --pose_folder demo/sample/poses  --key_frame_path demo/sample/key_frame.png --s1 8 --s2 3 --n_steps 100 --output_dir results --custom_vae demo/custom-chkpts/vae_1499.pth

Acknowledgment

This code is largely adapted from the HuggingFace diffusers repo.