Create app.py

app.py

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+import spaces
+
+import gradio as gr
+from tryon_inference import run_inference
+import os
+import numpy as np
+from PIL import Image
+import tempfile
+import torch
+from diffusers import FluxTransformer2DModel, FluxFillPipeline
+import subprocess
+
+subprocess.run("rm -rf /data-nvme/zerogpu-offload/*", env={}, shell=True)
+dtype = torch.bfloat16
+device = "cuda" if torch.cuda.is_available() else "cpu"
+
+print('Loading diffusion model ...')
+transformer = FluxTransformer2DModel.from_pretrained(
+    "xiaozaa/catvton-flux-alpha", 
+    torch_dtype=dtype
+)
+pipe = FluxFillPipeline.from_pretrained(
+    "black-forest-labs/FLUX.1-dev",
+    transformer=transformer,
+    torch_dtype=dtype
+).to(device)
+print('Loading Finished!')
+
+@spaces.GPU(duration=120)
+def gradio_inference(
+    image_data, 
+    garment, 
+    num_steps=50, 
+    guidance_scale=30.0, 
+    seed=-1, 
+    width=768,
+    height=1024
+):
+    """Wrapper function for Gradio interface"""
+    # Check if mask has been drawn
+    if image_data is None or "layers" not in image_data or not image_data["layers"]:
+        raise gr.Error("Please draw a mask over the clothing area before generating!")
+    
+    # Check if mask is empty (all black)
+    mask = image_data["layers"][0]
+    mask_array = np.array(mask)
+    if np.all(mask_array < 10):
+        raise gr.Error("The mask is empty! Please draw over the clothing area you want to replace.")
+
+    # Use temporary directory
+    with tempfile.TemporaryDirectory() as tmp_dir:
+        # Save inputs to temp directory
+        temp_image = os.path.join(tmp_dir, "image.png")
+        temp_mask = os.path.join(tmp_dir, "mask.png")
+        temp_garment = os.path.join(tmp_dir, "garment.png")
+        
+        # Extract image and mask from ImageEditor data
+        image = image_data["background"]
+        mask = image_data["layers"][0]  # First layer contains the mask
+        
+        # Convert to numpy array and process mask
+        mask_array = np.array(mask)
+        is_black = np.all(mask_array < 10, axis=2)
+        mask = Image.fromarray(((~is_black) * 255).astype(np.uint8))
+        
+        # Save files to temp directory
+        image.save(temp_image)
+        mask.save(temp_mask)
+        garment.save(temp_garment)
+        
+        try:
+            # Run inference
+            _, tryon_result = run_inference(
+                pipe=pipe,
+                image_path=temp_image,
+                mask_path=temp_mask,
+                garment_path=temp_garment,
+                num_steps=num_steps,
+                guidance_scale=guidance_scale,
+                seed=seed,
+                size=(width, height)
+            )
+            return tryon_result
+        except Exception as e:
+            raise gr.Error(f"Error during inference: {str(e)}")
+
+with gr.Blocks() as demo:
+    gr.Markdown("""
+    # CATVTON FLUX Virtual Try-On Demo
+    Upload a model image, draw a mask, and a garment image to generate virtual try-on results.
+    
+    [![Hugging Face Spaces](https://img.shields.io/badge/%F0%9F%A4%97%20Hugging%20Face-Spaces-blue)](https://huggingface.co/xiaozaa/catvton-flux-alpha)
+    [![GitHub](https://img.shields.io/badge/github-%23121011.svg?style=for-the-badge&logo=github&logoColor=white)](https://github.com/nftblackmagic/catvton-flux)
+    """)
+    
+    # gr.Video("example/github.mp4", label="Demo Video: How to use the tool")
+    
+    with gr.Column():
+        gr.Markdown("""
+        ### ⚠️ Important:
+        1. Choose a model image or upload your own
+        2. Use the Pen tool to draw a mask over the clothing area you want to replace
+        3. Choose a garment image or upload your own
+        """)
+        
+        with gr.Row():
+            with gr.Column():
+                image_input = gr.ImageMask(
+                    label="Model Image (Click 'Edit' and draw mask over the clothing area)",
+                    type="pil",
+                    height=600,
+                    width=300
+                )
+                gr.Examples(
+                    examples=[
+                        ["./example/person/00008_00.jpg"],
+                        ["./example/person/00055_00.jpg"],
+                        ["./example/person/00057_00.jpg"],
+                        ["./example/person/00067_00.jpg"],
+                        ["./example/person/00069_00.jpg"],
+                    ],
+                    inputs=[image_input],
+                    label="Person Images",
+                )
+            with gr.Column():
+                garment_input = gr.Image(label="Garment Image", type="pil", height=600, width=300)
+                gr.Examples(
+                    examples=[
+                        ["./example/garment/04564_00.jpg"],
+                        ["./example/garment/00055_00.jpg"],
+                        ["./example/garment/00396_00.jpg"],
+                        ["./example/garment/00067_00.jpg"],
+                        ["./example/garment/00069_00.jpg"],
+                    ],
+                    inputs=[garment_input],
+                    label="Garment Images",
+                ) 
+            with gr.Column():
+                tryon_output = gr.Image(label="Try-On Result", height=600, width=300)
+            
+        with gr.Row():
+            num_steps = gr.Slider(
+                minimum=1, 
+                maximum=100, 
+                value=30, 
+                step=1, 
+                label="Number of Steps"
+            )
+            guidance_scale = gr.Slider(
+                minimum=1.0, 
+                maximum=50.0, 
+                value=30.0, 
+                step=0.5, 
+                label="Guidance Scale"
+            )
+            seed = gr.Slider(
+                minimum=-1,
+                maximum=2147483647,
+                step=1,
+                value=-1,
+                label="Seed (-1 for random)"
+            )
+            width = gr.Slider(
+                minimum=256,
+                maximum=1024,
+                step=64,
+                value=768,
+                label="Width"
+            )
+            height = gr.Slider(
+                minimum=256,
+                maximum=1024,
+                step=64,
+                value=1024,
+                label="Height"
+            )
+            
+        
+        submit_btn = gr.Button("Generate Try-On", variant="primary")
+        
+            
+    with gr.Row():
+        gr.Markdown("""
+        ### Notes:
+        - The model is trained on VITON-HD dataset. It focuses on the woman upper body try-on generation.
+        - The mask should indicate the region where the garment will be placed.
+        - The garment image should be on a clean background.
+        - The model is not perfect. It may generate some artifacts.
+        - The model is slow. Please be patient.
+        - The model is just for research purpose.
+        """)
+    
+    submit_btn.click(
+        fn=gradio_inference,
+        inputs=[
+            image_input,
+            garment_input,
+            num_steps,
+            guidance_scale,
+            seed,
+            width,
+            height
+        ],
+        outputs=[tryon_output],
+        api_name="try-on"
+    )
+
+
+demo.launch()