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"""
FLUX.1 Kontext Style Transfer
==============================
Updated: 2025โ07โ12
---------------------------------
์ด ์คํฌ๋ฆฝํธ๋ HuggingโฏFace **FLUX.1โKontextโdev** ๋ชจ๋ธ๊ณผ
22โฏ์ข
์ ์คํ์ผ LoRA ๊ฐ์ค์น๋ฅผ ์ด์ฉํด ์ด๋ฏธ์ง๋ฅผ ๋ค์ํ ์์
์คํ์ผ๋ก ๋ณํํ๋ Gradio ๋ฐ๋ชจ์
๋๋ค.
์ฃผ์ ๊ฐ์ ์ฌํญ
--------------
1. **๋ชจ๋ธ ์บ์ฑ**โโย `snapshot_download()`๋ก ์คํ ์์ ์ ํ ๋ฒ๋ง
๋ชจ๋ธ๊ณผ LoRA๋ฅผ ์บ์ฑํด ์ดํ GPU ์ก์์๋ ์ฌ๋ค์ด๋ก๋๊ฐ ์๋๋ก
ํจ.
2. **GPUโฏVRAM ์๋ ํ๋ณ**โโย GPUโฏVRAM์ด 24โฏGBโฏ๋ฏธ๋ง์ด๋ฉด
`torch.float16`ย / `enable_sequential_cpu_offload()`๋ฅผ ์๋ ์ ์ฉ.
3. **๋จ์ผ ๋ก๋ฉ ๋ฉ์์ง**โโย Gradioย `gr.Info()` ๋ฉ์์ง๊ฐ ์ต์ด 1ํ๋ง
ํ์๋๋๋ก ์์ .
4. **๋ฒ๊ทธ ํฝ์ค**โโย seed ์ฒ๋ฆฌ, LoRA ์ธ๋ก๋, ์ด๋ฏธ์ง ๋ฆฌ์ฌ์ด์ฆ ๋ก์ง
๋ฑ ์ธ๋ถ ์ค๋ฅ ์์ .
------------------------------------------------------------
"""
import os
import gradio as gr
import spaces
import torch
from huggingface_hub import snapshot_download
from diffusers import FluxKontextPipeline
from diffusers.utils import load_image
from PIL import Image
# ------------------------------------------------------------------
# ํ๊ฒฝ ์ค์ & ๋ชจ๋ธย /ย LoRA ์ฌ์ ๋ค์ด๋ก๋
# ------------------------------------------------------------------
# ํฐ ํ์ผ์ ๋น ๋ฅด๊ฒ ๋ฐ๋๋ก ๊ฐ์ ํ๋๊ทธ ํ์ฑํ
os.environ.setdefault("HF_HUB_ENABLE_HF_TRANSFER", "1")
MODEL_ID = "black-forest-labs/FLUX.1-Kontext-dev"
LORA_REPO = "Owen777/Kontext-Style-Loras"
CACHE_DIR = os.getenv("HF_HOME", os.path.expanduser("~/.cache/huggingface"))
# --- ์ต์ด ์คํ ์์๋ง ๋ค์ด๋ก๋(์ด๋ฏธ ์บ์์ ์์ผ๋ฉด ๊ฑด๋๋) ---
MODEL_DIR = snapshot_download(
repo_id=MODEL_ID,
cache_dir=CACHE_DIR,
resume_download=True,
token=True # HF ํ ํฐ(ํ์ ์ ํ๊ฒฝ๋ณ์ HF_TOKEN ์ง์ )
)
LORA_DIR = snapshot_download(
repo_id=LORA_REPO,
cache_dir=CACHE_DIR,
resume_download=True,
token=True
)
# ------------------------------------------------------------------
# ์คํ์ผย โย LoRA ํ์ผ ๋งคํ & ์ค๋ช
# ------------------------------------------------------------------
STYLE_LORA_MAP = {
"3D_Chibi": "3D_Chibi_lora_weights.safetensors",
"American_Cartoon": "American_Cartoon_lora_weights.safetensors",
"Chinese_Ink": "Chinese_Ink_lora_weights.safetensors",
"Clay_Toy": "Clay_Toy_lora_weights.safetensors",
"Fabric": "Fabric_lora_weights.safetensors",
"Ghibli": "Ghibli_lora_weights.safetensors",
"Irasutoya": "Irasutoya_lora_weights.safetensors",
"Jojo": "Jojo_lora_weights.safetensors",
"Oil_Painting": "Oil_Painting_lora_weights.safetensors",
"Pixel": "Pixel_lora_weights.safetensors",
"Snoopy": "Snoopy_lora_weights.safetensors",
"Poly": "Poly_lora_weights.safetensors",
"LEGO": "LEGO_lora_weights.safetensors",
"Origami": "Origami_lora_weights.safetensors",
"Pop_Art": "Pop_Art_lora_weights.safetensors",
"Van_Gogh": "Van_Gogh_lora_weights.safetensors",
"Paper_Cutting": "Paper_Cutting_lora_weights.safetensors",
"Line": "Line_lora_weights.safetensors",
"Vector": "Vector_lora_weights.safetensors",
"Picasso": "Picasso_lora_weights.safetensors",
"Macaron": "Macaron_lora_weights.safetensors",
"Rick_Morty": "Rick_Morty_lora_weights.safetensors",
}
STYLE_DESCRIPTIONS = {
"3D_Chibi": "Cute, miniature 3D character style with big heads",
"American_Cartoon": "Classic American animation style",
"Chinese_Ink": "Traditional Chinese ink painting aesthetic",
"Clay_Toy": "Playful clay/plasticine toy appearance",
"Fabric": "Soft, textile-like rendering",
"Ghibli": "Studio Ghibli's distinctive anime style",
"Irasutoya": "Simple, flat Japanese illustration style",
"Jojo": "JoJo's Bizarre Adventure manga style",
"Oil_Painting": "Classic oil painting texture and strokes",
"Pixel": "Retro pixel art style",
"Snoopy": "Peanuts comic strip style",
"Poly": "Low-poly 3D geometric style",
"LEGO": "LEGO brick construction style",
"Origami": "Paper folding art style",
"Pop_Art": "Bold, colorful pop art style",
"Van_Gogh": "Van Gogh's expressive brushstroke style",
"Paper_Cutting": "Paper cut-out art style",
"Line": "Clean line art/sketch style",
"Vector": "Clean vector graphics style",
"Picasso": "Cubist art style inspired by Picasso",
"Macaron": "Soft, pastel macaron-like style",
"Rick_Morty": "Rick and Morty cartoon style",
}
# ------------------------------------------------------------------
# ํ์ดํ๋ผ์ธ ๋ก๋ (๋จ์ผ ์ธ์คํด์ค)
# ------------------------------------------------------------------
_pipeline = None # ๋ด๋ถ ๊ธ๋ก๋ฒ ์บ์
def load_pipeline():
"""Load (or return cached) FluxKontextPipeline."""
global _pipeline
if _pipeline is not None:
return _pipeline
# VRAM์ด 24โฏGBย ๋ฏธ๋ง์ด๋ฉด FP16 ์ฌ์ฉ + CPU ์คํ๋ก๋ฉ
dtype = torch.bfloat16
vram_gb = torch.cuda.get_device_properties(0).total_memory / 1024**3
if vram_gb < 24:
dtype = torch.float16
gr.Info("FLUX.1โKontext ํ์ดํ๋ผ์ธ ๋ก๋ฉ ์คโฆย (์ต์ด 1ํ)")
pipe = FluxKontextPipeline.from_pretrained(
MODEL_DIR,
torch_dtype=dtype,
local_files_only=True,
)
pipe.to("cuda")
if vram_gb < 24:
pipe.enable_sequential_cpu_offload()
else:
pipe.enable_model_cpu_offload()
_pipeline = pipe
return _pipeline
# ------------------------------------------------------------------
# ์คํ์ผ ๋ณํ ํจ์ (Spaces GPU ์ก)
# ------------------------------------------------------------------
@spaces.GPU(duration=600)
def style_transfer(input_image, style_name, prompt_suffix, num_inference_steps, guidance_scale, seed):
"""Apply selected style to the uploaded image."""
if input_image is None:
gr.Warning("Please upload an image first!")
return None
try:
pipe = load_pipeline()
# --- Torchย Generator ์ค์ ---
if seed > 0:
generator = torch.Generator(device="cuda").manual_seed(int(seed))
else:
generator = None # random
# --- ์
๋ ฅ ์ด๋ฏธ์ง ์ ์ฒ๋ฆฌ ---
img = input_image if isinstance(input_image, Image.Image) else load_image(input_image)
img = img.convert("RGB").resize((1024, 1024), Image.Resampling.LANCZOS)
# --- LoRA ๋ก๋ ---
lora_file = STYLE_LORA_MAP[style_name]
adapter_name = "style"
pipe.load_lora_weights(LORA_DIR, weight_name=lora_file, adapter_name=adapter_name)
pipe.set_adapters([adapter_name], [1.0])
# --- ํ๋กฌํํธ ๋น๋ ---
human_readable_style = style_name.replace("_", " ")
prompt = f"Turn this image into the {human_readable_style} style."
if prompt_suffix and prompt_suffix.strip():
prompt += f" {prompt_suffix.strip()}"
gr.Info("Generating styled imageโฆ (24โ60โฏs)")
result = pipe(
image=img,
prompt=prompt,
guidance_scale=float(guidance_scale),
num_inference_steps=int(num_inference_steps),
generator=generator,
height=1024,
width=1024,
)
# --- LoRA ์ธ๋ก๋ & GPU ๋ฉ๋ชจ๋ฆฌ ํด์ ---
pipe.unload_lora_weights(adapter_name=adapter_name)
torch.cuda.empty_cache()
return result.images[0]
except Exception as e:
torch.cuda.empty_cache()
gr.Error(f"Error during style transfer: {e}")
return None
# ------------------------------------------------------------------
# Gradio UI ์ ์
# ------------------------------------------------------------------
with gr.Blocks(title="FLUX.1 Kontext Style Transfer", theme=gr.themes.Soft()) as demo:
gr.Markdown("""
# ๐จ FLUX.1 Kontext Style Transfer
์
๋ก๋ํ ์ด๋ฏธ์ง๋ฅผ 22โฏ์ข
์ ์์ ์คํ์ผ๋ก ๋ณํํ์ธ์!
(๋ชจ๋ธโฏ/โฏLoRA๋ ์ต์ด ์คํ ์์๋ง ๋ค์ด๋ก๋๋๋ฉฐ, ์ดํ ์คํ์ ๋น ๋ฆ
๋๋ค.)
""")
with gr.Row():
with gr.Column(scale=1):
input_image = gr.Image(label="Upload Image", type="pil", height=400)
style_dropdown = gr.Dropdown(
choices=list(STYLE_LORA_MAP.keys()),
value="Ghibli",
label="Select Style",
)
style_info = gr.Textbox(label="Style Description", value=STYLE_DESCRIPTIONS["Ghibli"], interactive=False, lines=2)
prompt_suffix = gr.Textbox(label="Additional Instructions (Optional)", placeholder="e.g. add dramatic lighting", lines=2)
with gr.Accordion("Advanced Settings", open=False):
num_steps = gr.Slider(minimum=10, maximum=50, value=24, step=1, label="Inference Steps")
guidance = gr.Slider(minimum=1.0, maximum=7.5, value=2.5, step=0.1, label="Guidance Scale")
seed = gr.Number(label="Seed (0 = random)", value=42)
generate_btn = gr.Button("๐จ Transform Image", variant="primary", size="lg")
with gr.Column(scale=1):
output_image = gr.Image(label="Styled Result", type="pil", height=400)
gr.Markdown("""
### ๐ก Tips
* ์ด๋ฏธ์ง ํฌ๊ธฐ๋ 1024ร1024๋ก ๋ฆฌ์ฌ์ด์ฆ๋ฉ๋๋ค.
* ์ต์ด 1ํย ๋ชจ๋ธย +ย LoRA ๋ค์ด๋ก๋ ํ์๋ **์บ์**๋ฅผ ์ฌ์ฉํ๋ฏ๋ก 10โ20โฏs ๋ด ์๋ฃ๋ฉ๋๋ค.
* "Additional Instructions"์ ์๊ฐยท์กฐ๋ช
ยทํจ๊ณผ ๋ฑ์ ์์ด๋ก ๊ฐ๋จํ ์ ์ผ๋ฉด ๊ฒฐ๊ณผ๋ฅผ ์ธ๋ฐํ๊ฒ ์ ์ดํ ์ ์์ต๋๋ค.
""")
# --- ์คํ์ผ ์ค๋ช
์๋ ์
๋ฐ์ดํธ ---
def _update_desc(style):
return STYLE_DESCRIPTIONS.get(style, "")
style_dropdown.change(fn=_update_desc, inputs=[style_dropdown], outputs=[style_info])
# --- ์์ ---
gr.Examples(
examples=[
["https://huggingface.co/datasets/black-forest-labs/kontext-bench/resolve/main/test/images/0003.jpg", "Ghibli", ""],
["https://huggingface.co/datasets/black-forest-labs/kontext-bench/resolve/main/test/images/0003.jpg", "3D_Chibi", "make it extra cute"],
["https://huggingface.co/datasets/black-forest-labs/kontext-bench/resolve/main/test/images/0003.jpg", "Van_Gogh", "with swirling sky"],
],
inputs=[input_image, style_dropdown, prompt_suffix],
outputs=output_image,
fn=lambda img, style, prompt: style_transfer(img, style, prompt, 24, 2.5, 42),
cache_examples=False,
)
# --- ๋ฒํผ ์ฐ๊ฒฐ ---
generate_btn.click(
fn=style_transfer,
inputs=[input_image, style_dropdown, prompt_suffix, num_steps, guidance, seed],
outputs=output_image,
)
gr.Markdown("""
---
**Created with โค๏ธ by GiniGEN (2025)**
""")
if __name__ == "__main__":
demo.launch(inline=False)
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