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Delete app.py

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  1. app.py +0 -156
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- import gradio as gr
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- import torch
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- import numpy as np
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- from PIL import Image
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- import cv2
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- from diffusers import StableDiffusionControlNetPipeline, ControlNetModel, UniPCMultistepScheduler
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-
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- # ---------------------------------------------------------------------------
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- # Model loading (cached – runs once on Space startup)
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- # ---------------------------------------------------------------------------
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-
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- def load_pipeline():
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- controlnet = ControlNetModel.from_pretrained(
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- "lllyasviel/sd-controlnet-canny",
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- torch_dtype=torch.float16,
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- )
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- pipe = StableDiffusionControlNetPipeline.from_pretrained(
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- "runwayml/stable-diffusion-v1-5",
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- controlnet=controlnet,
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- torch_dtype=torch.float16,
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- safety_checker=None,
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- )
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- pipe.scheduler = UniPCMultistepScheduler.from_config(pipe.scheduler.config)
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- pipe.enable_model_cpu_offload() # keeps VRAM usage low
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- return pipe
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-
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- pipe = load_pipeline()
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-
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- # ---------------------------------------------------------------------------
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- # Helper: extract Canny edges
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- # ---------------------------------------------------------------------------
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-
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- def extract_canny(image: Image.Image, low: int, high: int) -> Image.Image:
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- img_array = np.array(image.convert("RGB"))
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- edges = cv2.Canny(img_array, low, high)
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- edges_rgb = cv2.cvtColor(edges, cv2.COLOR_GRAY2RGB)
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- return Image.fromarray(edges_rgb)
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-
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- # ---------------------------------------------------------------------------
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- # Main generation function
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- # ---------------------------------------------------------------------------
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-
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- def generate(
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- input_image,
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- prompt,
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- negative_prompt,
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- canny_low,
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- canny_high,
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- guidance_scale,
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- steps,
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- seed,
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- ):
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- if input_image is None:
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- raise gr.Error("Bitte lade ein Bild hoch.")
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- if not prompt.strip():
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- raise gr.Error("Bitte gib einen Prompt ein.")
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-
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- pil_image = Image.fromarray(input_image).resize((512, 512))
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- control_image = extract_canny(pil_image, int(canny_low), int(canny_high))
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-
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- generator = torch.manual_seed(int(seed)) if seed >= 0 else None
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-
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- result = pipe(
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- prompt=prompt,
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- negative_prompt=negative_prompt or None,
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- image=control_image,
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- num_inference_steps=int(steps),
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- guidance_scale=float(guidance_scale),
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- generator=generator,
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- ).images[0]
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-
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- return control_image, result
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-
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- # ---------------------------------------------------------------------------
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- # Gradio UI
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- # ---------------------------------------------------------------------------
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-
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- css = """
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- body { font-family: 'Inter', sans-serif; background: #0f0f11; color: #e8e8f0; }
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- .gradio-container { max-width: 1100px; margin: 0 auto; }
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- #title { text-align: center; padding: 2rem 0 0.5rem; }
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- #title h1 { font-size: 2rem; font-weight: 700; letter-spacing: -0.5px;
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- background: linear-gradient(90deg, #a78bfa, #60a5fa);
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- -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
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- #title p { color: #9090a8; font-size: 0.95rem; margin-top: 0.25rem; }
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- .panel { background: #1a1a22; border: 1px solid #2a2a38; border-radius: 12px; padding: 1.25rem; }
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- .generate-btn { background: linear-gradient(135deg, #7c3aed, #2563eb) !important;
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- color: white !important; border: none !important;
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- font-weight: 600 !important; font-size: 1rem !important;
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- border-radius: 8px !important; height: 48px !important; }
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- .generate-btn:hover { opacity: 0.9 !important; }
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- """
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-
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- with gr.Blocks(css=css, title="ControlNet Canny") as demo:
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-
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- gr.HTML("""
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- <div id="title">
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- <h1>⚡ ControlNet · Canny Edge</h1>
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- <p>Lade ein Bild hoch, schreib einen Prompt – und erzeuge ein neues Bild, das die Struktur deines Originals übernimmt.</p>
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- </div>
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- """)
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-
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- with gr.Row():
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- # ---- Left column: inputs ----
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- with gr.Column(scale=1, elem_classes="panel"):
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- gr.Markdown("### 📥 Eingabe")
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- input_image = gr.Image(label="Referenzbild", type="numpy", height=300)
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-
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- prompt = gr.Textbox(
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- label="Prompt",
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- placeholder="a futuristic city at night, neon lights, photorealistic, 8k",
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- lines=3,
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- )
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- negative_prompt = gr.Textbox(
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- label="Negative Prompt (optional)",
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- placeholder="blurry, low quality, watermark, deformed",
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- lines=2,
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- )
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-
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- with gr.Accordion("⚙️ Erweiterte Einstellungen", open=False):
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- with gr.Row():
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- canny_low = gr.Slider(0, 255, value=100, step=1, label="Canny Low Threshold")
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- canny_high = gr.Slider(0, 255, value=200, step=1, label="Canny High Threshold")
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- with gr.Row():
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- guidance_scale = gr.Slider(1, 20, value=7.5, step=0.5, label="Guidance Scale")
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- steps = gr.Slider(10, 50, value=20, step=1, label="Inference Steps")
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- seed = gr.Number(value=42, label="Seed (-1 = zufällig)", precision=0)
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-
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- run_btn = gr.Button("🎨 Generieren", elem_classes="generate-btn")
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-
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- # ---- Right column: outputs ----
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- with gr.Column(scale=1, elem_classes="panel"):
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- gr.Markdown("### 📤 Ergebnis")
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- canny_out = gr.Image(label="Canny-Kantenbild", height=250)
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- result_out = gr.Image(label="Generiertes Bild", height=350)
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-
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- # ---- Example images ----
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- gr.Markdown("---")
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- gr.Markdown("### 💡 Beispiel-Prompts")
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- gr.Examples(
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- examples=[
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- [None, "a pencil sketch of a medieval castle, detailed, black and white", "blurry, color", 100, 200, 7.5, 20, 42],
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- [None, "a cyberpunk street scene, neon lights, rain, cinematic", "low quality", 80, 180, 8.0, 25, 0],
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- [None, "oil painting of a mountain landscape, impressionist style", "photo, realistic", 100, 200, 7.0, 20, 7],
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- ],
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- inputs=[input_image, prompt, negative_prompt, canny_low, canny_high, guidance_scale, steps, seed],
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- label="Zum Laden anklicken",
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- )
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-
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- run_btn.click(
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- fn=generate,
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- inputs=[input_image, prompt, negative_prompt, canny_low, canny_high, guidance_scale, steps, seed],
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- outputs=[canny_out, result_out],
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- )
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-
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- demo.launch()