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https://github.com/finegrain-ai/refiners.git
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implement foreground conditioned ic light
This commit is contained in:
parent
928da1ee1c
commit
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@ -19,6 +19,7 @@ class Args(argparse.Namespace):
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half: bool
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verbose: bool
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skip_init_check: bool
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override_weights: str | None
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def setup_converter(args: Args) -> ModelConverter:
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89
scripts/conversion/convert_ic_light.py
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89
scripts/conversion/convert_ic_light.py
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@ -0,0 +1,89 @@
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import argparse
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from pathlib import Path
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from convert_diffusers_unet import Args as UNetArgs, setup_converter as setup_unet_converter
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from huggingface_hub import hf_hub_download # type: ignore
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from refiners.fluxion.utils import load_from_safetensors, save_to_safetensors
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class Args(argparse.Namespace):
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source_path: str
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output_path: str | None
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subfolder: str
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half: bool
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verbose: bool
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reference_unet_path: str
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def main() -> None:
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parser = argparse.ArgumentParser(description="Converts IC-Light patch weights to work with Refiners")
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parser.add_argument(
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"--from",
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type=str,
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dest="source_path",
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default="lllyasviel/ic-light",
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help=(
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"Can be a path to a .bin file, a .safetensors file or a model name from the Hugging Face Hub. Default:"
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" lllyasviel/ic-light"
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),
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)
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parser.add_argument("--filename", type=str, default="iclight_sd15_fc.safetensors", help="Filename inside the hub.")
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parser.add_argument(
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"--to",
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type=str,
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dest="output_path",
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default=None,
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help=(
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"Output path (.safetensors) for converted model. If not provided, the output path will be the same as the"
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" source path."
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),
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)
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parser.add_argument(
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"--verbose",
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action="store_true",
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default=False,
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help="Prints additional information during conversion. Default: False",
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)
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parser.add_argument(
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"--reference-unet-path",
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type=str,
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dest="reference_unet_path",
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default="runwayml/stable-diffusion-v1-5",
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help="Path to the reference UNet weights.",
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)
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args = parser.parse_args(namespace=Args())
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if args.output_path is None:
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args.output_path = f"{Path(args.filename).stem}-refiners.safetensors"
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patch_file = (
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Path(args.source_path)
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if args.source_path.endswith(".safetensors")
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else Path(
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hf_hub_download(
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repo_id=args.source_path,
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filename=args.filename,
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)
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)
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)
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patch_weights = load_from_safetensors(patch_file)
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unet_args = UNetArgs(
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source_path=args.reference_unet_path,
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subfolder="unet",
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half=False,
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verbose=False,
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skip_init_check=True,
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override_weights=None,
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)
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converter = setup_unet_converter(args=unet_args)
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result = converter._convert_state_dict( # pyright: ignore[reportPrivateUsage]
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source_state_dict=patch_weights,
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target_state_dict=converter.target_model.state_dict(),
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state_dict_mapping=converter.get_mapping(),
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)
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save_to_safetensors(path=args.output_path, tensors=result)
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if __name__ == "__main__":
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main()
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@ -438,6 +438,14 @@ def download_sdxl_lightning_lora():
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)
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def download_ic_light():
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download_file(
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"https://huggingface.co/lllyasviel/ic-light/resolve/main/iclight_sd15_fc.safetensors",
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dest_folder=test_weights_dir,
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expected_hash="bce70123",
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)
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def printg(msg: str):
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"""print in green color"""
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print("\033[92m" + msg + "\033[0m")
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@ -790,6 +798,16 @@ def convert_sdxl_lightning_base():
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)
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def convert_ic_light():
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run_conversion_script(
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"convert_ic_light.py",
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"tests/weights/iclight_sd15_fc.safetensors",
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"tests/weights/iclight_sd15_fc-refiners.safetensors",
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half=False,
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expected_hash="be315c1f",
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)
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def download_all():
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print(f"\nAll weights will be downloaded to {test_weights_dir}\n")
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download_sd15("runwayml/stable-diffusion-v1-5")
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@ -811,6 +829,7 @@ def download_all():
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download_lcm_lora()
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download_sdxl_lightning_base()
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download_sdxl_lightning_lora()
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download_ic_light()
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def convert_all():
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@ -830,6 +849,7 @@ def convert_all():
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convert_control_lora_fooocus()
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convert_lcm_base()
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convert_sdxl_lightning_base()
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convert_ic_light()
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def main():
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@ -0,0 +1,182 @@
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import torch
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from PIL import Image
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from torch.nn.init import zeros_ as zero_init
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from refiners.fluxion import layers as fl
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from refiners.fluxion.utils import image_to_tensor, no_grad
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from refiners.foundationals.clip.text_encoder import CLIPTextEncoderL
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from refiners.foundationals.latent_diffusion.solvers.solver import Solver
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from refiners.foundationals.latent_diffusion.stable_diffusion_1.model import SD1Autoencoder, StableDiffusion_1
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from refiners.foundationals.latent_diffusion.stable_diffusion_1.unet import DownBlocks, SD1UNet
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class ICLight(StableDiffusion_1):
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"""
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IC-Light is a Stable Diffusion model that can be used to relight a reference image.
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At initialization, the UNet will be patched to accept four additional input channels. Only the text-conditioned relighting model is supported for now.
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```example
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import torch
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from huggingface_hub import hf_hub_download
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from PIL import Image
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from refiners.fluxion.utils import load_from_safetensors, manual_seed, no_grad
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from refiners.foundationals.clip import CLIPTextEncoderL
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from refiners.foundationals.latent_diffusion.stable_diffusion_1 import SD1Autoencoder, SD1UNet
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from refiners.foundationals.latent_diffusion.stable_diffusion_1.ic_light import ICLight
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device = torch.device("cuda" if torch.cuda.is_available() else "cpu")
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dtype = torch.float32
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no_grad().__enter__()
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manual_seed(42)
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sd = ICLight(
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patch_weights=load_from_safetensors(
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path=hf_hub_download(
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repo_id="refiners/ic_light.sd1_5.fc",
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filename="model.safetensors",
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),
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device=device,
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),
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unet=SD1UNet(in_channels=4, device=device, dtype=dtype).load_from_safetensors(
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tensors_path=hf_hub_download(
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repo_id="refiners/realistic_vision.v5_1.sd1_5.unet",
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filename="model.safetensors",
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)
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),
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clip_text_encoder=CLIPTextEncoderL(device=device, dtype=dtype).load_from_safetensors(
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tensors_path=hf_hub_download(
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repo_id="refiners/realistic_vision.v5_1.sd1_5.text_encoder",
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filename="model.safetensors",
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)
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),
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lda=SD1Autoencoder(device=device, dtype=dtype).load_from_safetensors(
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tensors_path=hf_hub_download(
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repo_id="refiners/realistic_vision.v5_1.sd1_5.autoencoder",
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filename="model.safetensors",
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)
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),
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device=device,
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dtype=dtype,
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)
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prompt = "soft lighting, high-quality professional image"
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negative_prompt = "lowres, bad anatomy, bad hands, cropped, worst quality"
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clip_text_embedding = sd.compute_clip_text_embedding(text=prompt, negative_text=negative_prompt)
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image = Image.open("reference-image.png").resize((512, 512))
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sd.set_ic_light_condition(image)
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x = torch.randn(
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size=(1, 4, 64, 64),
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device=device,
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dtype=dtype,
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)
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for step in sd.steps:
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x = sd(
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x=x,
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step=step,
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clip_text_embedding=clip_text_embedding,
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condition_scale=1.5,
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)
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predicted_image = sd.lda.latents_to_image(x)
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predicted_image.save("ic-light-output.png")
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"""
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def __init__(
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self,
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patch_weights: dict[str, torch.Tensor],
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unet: SD1UNet,
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lda: SD1Autoencoder | None = None,
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clip_text_encoder: CLIPTextEncoderL | None = None,
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solver: Solver | None = None,
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device: torch.device | str = "cpu",
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dtype: torch.dtype = torch.float32,
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) -> None:
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super().__init__(
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unet=unet,
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lda=lda,
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clip_text_encoder=clip_text_encoder,
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solver=solver,
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device=device,
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dtype=dtype,
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)
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self._extend_conv_in()
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self._apply_patch(weights=patch_weights)
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@no_grad()
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def _extend_conv_in(self) -> None:
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"""
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Extend to 8 the input channels of the first convolutional layer of the UNet.
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"""
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down_blocks = self.unet.ensure_find(DownBlocks)
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first_block = down_blocks.layer(0, fl.Chain)
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conv_in = first_block.ensure_find(fl.Conv2d)
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new_conv_in = fl.Conv2d(
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in_channels=conv_in.in_channels + 4,
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out_channels=conv_in.out_channels,
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kernel_size=(conv_in.kernel_size[0], conv_in.kernel_size[1]),
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padding=(int(conv_in.padding[0]), int(conv_in.padding[1])),
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device=conv_in.device,
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dtype=conv_in.dtype,
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)
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zero_init(new_conv_in.weight)
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new_conv_in.bias = conv_in.bias
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new_conv_in.weight[:, :4, :, :] = conv_in.weight
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first_block.replace(old_module=conv_in, new_module=new_conv_in)
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def _apply_patch(self, weights: dict[str, torch.Tensor]) -> None:
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"""
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Apply the patch weights to the UNet, modifying inplace the state dict.
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"""
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current_state_dict = self.unet.state_dict()
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new_state_dict = {
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key: tensor + weights[key].to(tensor.device, tensor.dtype) for key, tensor in current_state_dict.items()
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}
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self.unet.load_state_dict(new_state_dict)
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@staticmethod
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def compute_gray_composite(image: Image.Image, mask: Image.Image) -> Image.Image:
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"""
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Compute a grayscale composite of an image and a mask.
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"""
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assert mask.mode == "L", "Mask must be a grayscale image"
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assert image.size == mask.size, "Image and mask must have the same size"
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background = Image.new("RGB", image.size, (127, 127, 127))
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return Image.composite(image, background, mask)
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def set_ic_light_condition(
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self, image: Image.Image, mask: Image.Image | None = None, use_rescaled_image: bool = False
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) -> None:
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"""
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Set the IC light condition.
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If a mask is provided, it will be used to compute a grayscale composite of the image and the mask ; otherwise,
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the image will be used as is, but note that IC-Light requires a 127-valued gray background to work.
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`use_rescaled_image` is used to rescale the image to [-1, 1] range. This is the expected range when using the
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Stable Diffusion autoencoder. But in the original code this part is skipped, giving different results.
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see https://github.com/lllyasviel/IC-Light/blob/788687452a2bad59633a401281c8aee91bdd3750/gradio_demo.py#L262-L265
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"""
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if mask is not None:
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image = self.compute_gray_composite(image=image, mask=mask)
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image_tensor = image_to_tensor(image, device=self.device, dtype=self.dtype)
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if use_rescaled_image:
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image_tensor = 2 * image_tensor - 1
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latents = self.lda.encode(image_tensor)
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self._ic_light_condition = latents
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def __call__(
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self, x: torch.Tensor, step: int, *, clip_text_embedding: torch.Tensor, condition_scale: float = 2.0
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) -> torch.Tensor:
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assert self._ic_light_condition is not None, "Reference image not set, use `set_ic_light_condition` first"
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x = torch.cat((x, self._ic_light_condition), dim=1)
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return super().__call__(
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x,
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step,
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clip_text_embedding=clip_text_embedding,
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condition_scale=condition_scale,
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)
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@ -12,6 +12,7 @@ from tests.utils import ensure_similar_images
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from refiners.fluxion.layers.attentions import ScaledDotProductAttention
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from refiners.fluxion.utils import image_to_tensor, load_from_safetensors, load_tensors, manual_seed, no_grad
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from refiners.foundationals.clip.concepts import ConceptExtender
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from refiners.foundationals.clip.text_encoder import CLIPTextEncoderL
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from refiners.foundationals.latent_diffusion import (
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ControlLoraAdapter,
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SD1ControlnetAdapter,
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@ -30,6 +31,8 @@ from refiners.foundationals.latent_diffusion.reference_only_control import Refer
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from refiners.foundationals.latent_diffusion.restart import Restart
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from refiners.foundationals.latent_diffusion.solvers import DDIM, Euler, NoiseSchedule, SolverParams
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from refiners.foundationals.latent_diffusion.solvers.dpm import DPMSolver
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from refiners.foundationals.latent_diffusion.stable_diffusion_1.ic_light import ICLight
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from refiners.foundationals.latent_diffusion.stable_diffusion_1.model import SD1Autoencoder
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from refiners.foundationals.latent_diffusion.stable_diffusion_1.multi_diffusion import (
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SD1DiffusionTarget,
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SD1MultiDiffusion,
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@ -2564,3 +2567,58 @@ def test_multi_upscaler(
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) -> None:
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predicted_image = multi_upscaler.upscale(clarity_example)
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ensure_similar_images(predicted_image, expected_multi_upscaler, min_psnr=35, min_ssim=0.99)
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@pytest.fixture(scope="module")
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def expected_ic_light(ref_path: Path) -> Image.Image:
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return _img_open(ref_path / "expected_ic_light.png").convert("RGB")
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@pytest.fixture(scope="module")
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def ic_light_sd15_fc_weights(test_weights_path: Path) -> Path:
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return test_weights_path / "iclight_sd15_fc-refiners.safetensors"
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@pytest.fixture(scope="module")
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def ic_light_sd15_fc(
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ic_light_sd15_fc_weights: Path,
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unet_weights_std: Path,
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lda_weights: Path,
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text_encoder_weights: Path,
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test_device: torch.device,
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) -> ICLight:
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return ICLight(
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patch_weights=load_from_safetensors(ic_light_sd15_fc_weights),
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unet=SD1UNet(in_channels=4).load_from_safetensors(unet_weights_std),
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lda=SD1Autoencoder().load_from_safetensors(lda_weights),
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clip_text_encoder=CLIPTextEncoderL().load_from_safetensors(text_encoder_weights),
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device=test_device,
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)
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@no_grad()
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def test_ic_light(
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kitchen_dog: Image.Image,
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kitchen_dog_mask: Image.Image,
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ic_light_sd15_fc: ICLight,
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expected_ic_light: Image.Image,
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test_device: torch.device,
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) -> None:
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sd = ic_light_sd15_fc
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manual_seed(2)
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clip_text_embedding = sd.compute_clip_text_embedding(
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text="a photo of dog, purple neon lighting",
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negative_text="lowres, bad anatomy, bad hands, cropped, worst quality",
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)
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ic_light_condition = sd.compute_gray_composite(image=kitchen_dog, mask=kitchen_dog_mask.convert("L"))
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sd.set_ic_light_condition(ic_light_condition)
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x = torch.randn(1, 4, 64, 64, device=test_device)
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for step in sd.steps:
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x = sd(
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x,
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step=step,
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clip_text_embedding=clip_text_embedding,
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condition_scale=2.0,
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)
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predicted_image = sd.lda.latents_to_image(x)
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ensure_similar_images(predicted_image, expected_ic_light, min_psnr=35, min_ssim=0.99)
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@ -60,6 +60,7 @@ Special cases:
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- `expected_controlnet_canny_scale_decay.png`
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- `expected_multi_diffusion_dpm.png`
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- `expected_multi_upscaler.png`
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- `expected_ic_light.png`
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## Other images
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BIN
tests/e2e/test_diffusion_ref/expected_ic_light.png
Normal file
BIN
tests/e2e/test_diffusion_ref/expected_ic_light.png
Normal file
Binary file not shown.
After Width: | Height: | Size: 438 KiB |
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