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Create app.py
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app.py
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import gradio as gr
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from transformers import AutoImageProcessor, AutoModel
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import torch
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from PIL import Image
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import os
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import json
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import uuid
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import numpy as np
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# Загрузка модели DINOv2
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processor = AutoImageProcessor.from_pretrained("facebook/dino-vits16")
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model = AutoModel.from_pretrained("facebook/dino-vits16")
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# Функция для извлечения эмбеддинга
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def extract_features(img):
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inputs = processor(images=img, return_tensors="pt")
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with torch.no_grad():
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outputs = model(**inputs)
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return outputs.last_hidden_state[:, 0].squeeze().numpy()
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# Косинусное расстояние между двумя эмбеддингами
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def cosine_similarity(vec1, vec2):
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a = np.array(vec1)
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b = np.array(vec2)
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return np.dot(a, b) / (np.linalg.norm(a) * np.linalg.norm(b))
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# Путь к базе
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db_path = "embeddings.json"
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# Сохранение фото в базу
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def save_embedding(image, building_name):
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if not building_name:
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return "Ошибка: нужно указать название здания."
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embedding = extract_features(image).tolist()
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entry = {
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"id": str(uuid.uuid4()),
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"building_name": building_name,
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"embedding": embedding
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}
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if os.path.exists(db_path):
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with open(db_path, "r") as f:
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data = json.load(f)
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else:
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data = []
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data.append(entry)
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with open(db_path, "w") as f:
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json.dump(data, f, indent=2)
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return f"Фото сохранено для здания: {building_name}"
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# Поиск похожего здания
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def identify_building(image):
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if not os.path.exists(db_path):
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return "База данных пуста. Добавьте здания."
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with open(db_path, "r") as f:
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data = json.load(f)
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if not data:
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return "База данных пуста."
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embedding = extract_features(image).tolist()
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similarities = []
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for item in data:
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score = cosine_similarity(item["embedding"], embedding)
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similarities.append({
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"building_name": item["building_name"],
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"score": score
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})
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similarities.sort(key=lambda x: x["score"], reverse=True)
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best = similarities[0]
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return f"Похоже на: {best['building_name']}\nСовпадение: {best['score']:.4f}"
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# Интерфейс
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with gr.Blocks() as demo:
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gr.Markdown("## 🏛 Распознавание зданий и пополнение базы")
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with gr.Tab("🔍 Найти здание"):
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with gr.Row():
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img_input = gr.Image(type="pil")
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recognize_button = gr.Button("Распознать здание")
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result_text = gr.Textbox()
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recognize_button.click(fn=identify_building, inputs=img_input, outputs=result_text)
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with gr.Tab("➕ Добавить новое здание"):
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with gr.Row():
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img_save = gr.Image(type="pil")
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building_name = gr.Textbox(label="Название здания")
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save_button = gr.Button("Сохранить в базу")
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save_result = gr.Textbox()
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save_button.click(fn=save_embedding, inputs=[img_save, building_name], outputs=save_result)
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demo.launch()
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