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Delete app.py
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app.py
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import spaces
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import gradio as gr
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import torch
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from PIL import Image
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from diffusers import DiffusionPipeline
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import random
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import uuid
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import numpy as np
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import time
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import os
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# Description for the app
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DESCRIPTION = """
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# Qwen Image Upscaler
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Upload a low-quality or small image, and this app will use the Qwen-Image model to generate a higher-resolution, more detailed version.
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"""
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# --- Helper functions ---
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def save_image(img: Image.Image) -> str:
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"""Saves an image to a unique filename and returns the path."""
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unique_name = str(uuid.uuid4()) + ".png"
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img.save(unique_name)
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return unique_name
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MAX_SEED = np.iinfo(np.int32).max
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# --- Load the Qwen/Qwen-Image pipeline ---
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# This single pipeline is used for both text-to-image and image-to-image (upscaling)
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print("Loading Qwen-Image model...")
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dtype = torch.bfloat16
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device = torch.device("cuda" if torch.cuda.is_available() else "cpu")
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pipe_qwen = DiffusionPipeline.from_pretrained(
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"Qwen/Qwen-Image",
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torch_dtype=dtype
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).to(device)
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print("Model loaded successfully.")
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# --- The main upscaler function ---
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@spaces.GPU(duration=120)
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def upscale_image(
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image: Image.Image,
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prompt: str,
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negative_prompt: str,
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seed: int,
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guidance_scale: float,
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randomize_seed: bool,
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num_inference_steps: int,
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progress=gr.Progress(track_tqdm=True)
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):
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"""
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Takes a low-resolution image and upscales it using the Qwen-Image model.
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"""
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if image is None:
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raise gr.Error("No image uploaded. Please upload an image to upscale.")
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if randomize_seed:
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seed = random.randint(0, MAX_SEED)
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generator = torch.Generator(device).manual_seed(seed)
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start_time = time.time()
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# The pipeline automatically handles upscaling when an `image` argument is provided.
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upscaled_image = pipe_qwen(
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prompt=prompt,
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negative_prompt=negative_prompt,
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image=image, # Providing the input image triggers the upscaling/img2img mode
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guidance_scale=guidance_scale,
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num_inference_steps=num_inference_steps,
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generator=generator,
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output_type="pil",
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).images[0]
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end_time = time.time()
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duration = end_time - start_time
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image_path = save_image(upscaled_image)
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print(f"Upscaling finished in {duration:.2f} seconds. Seed used: {seed}")
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return image_path, seed, f"{duration:.2f}"
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# --- Gradio User Interface ---
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css = '''
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.gradio-container {
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max-width: 840px !important;
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margin: 0 auto !important;
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}
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h1 {
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text-align: center;
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}
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footer {
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visibility: hidden;
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}
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'''
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with gr.Blocks(css=css, theme="bethecloud/storj_theme") as demo:
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gr.Markdown(DESCRIPTION)
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with gr.Row():
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with gr.Column(scale=1):
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# FIXED LINE: Removed the `tool='editor'` argument
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image_upload = gr.Image(
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label="Upload Low-Resolution Image",
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type="pil"
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)
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prompt = gr.Textbox(
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label="Prompt",
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value="ultra-detailed, high quality, 4k, 8k, masterpiece",
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placeholder="Describe the desired result (e.g., 'photorealistic, sharp focus')."
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)
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upscale_button = gr.Button("Upscale Image", variant="primary")
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with gr.Column(scale=1):
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upscaled_image_result = gr.Image(label="Upscaled Image")
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with gr.Accordion("Upscaler Options", open=False):
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negative_prompt = gr.Text(
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label="Negative Prompt",
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max_lines=1,
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placeholder="Enter concepts to avoid (e.g., 'blurry, pixelated').",
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value="blurry, low resolution, text, watermark, jpeg artifacts, compression",
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)
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seed = gr.Slider(
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label="Seed",
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minimum=0,
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maximum=MAX_SEED,
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step=1,
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value=0,
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)
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randomize_seed = gr.Checkbox(label="Randomize seed", value=True)
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guidance_scale = gr.Slider(
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label="Guidance Scale",
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minimum=0.0,
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maximum=20.0,
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step=0.1,
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value=4.0,
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)
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num_inference_steps = gr.Slider(
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label="Number of Inference Steps",
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minimum=1,
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maximum=100,
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step=1,
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value=25, # Upscaling often requires fewer steps than generation from scratch
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)
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with gr.Accordion("Output Information", open=True):
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with gr.Row():
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seed_display = gr.Textbox(label="Seed used", interactive=False)
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generation_time = gr.Textbox(label="Generation time (seconds)", interactive=False)
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# Connect the button to the function
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upscale_button.click(
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fn=upscale_image,
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inputs=[
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image_upload,
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prompt,
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negative_prompt,
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seed,
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guidance_scale,
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randomize_seed,
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num_inference_steps
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],
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outputs=[
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upscaled_image_result,
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seed_display,
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generation_time,
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],
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api_name="upscale"
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)
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if __name__ == "__main__":
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demo.queue(max_size=20).launch(share=False, debug=True, show_error=True)
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